* PowerQuest, Inc.
*
* Copyright (C) 1999, 2000 by Theosore Ts'o
- *
+ *
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* 5. Move the inode tables, if necessary.
*/
+#include "config.h"
#include "resize2fs.h"
#include <time.h>
#define RESIZE2FS_DEBUG
#endif
-static errcode_t adjust_superblock(ext2_resize_t rfs, blk_t new_size);
+static void fix_uninit_block_bitmaps(ext2_filsys fs);
+static errcode_t adjust_superblock(ext2_resize_t rfs, blk64_t new_size);
static errcode_t blocks_to_move(ext2_resize_t rfs);
static errcode_t block_mover(ext2_resize_t rfs);
static errcode_t inode_scan_and_fix(ext2_resize_t rfs);
static errcode_t move_itables(ext2_resize_t rfs);
static errcode_t fix_resize_inode(ext2_filsys fs);
static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs);
+static errcode_t fix_sb_journal_backup(ext2_filsys fs);
+static errcode_t mark_table_blocks(ext2_filsys fs,
+ ext2fs_block_bitmap bmap);
+static errcode_t clear_sparse_super2_last_group(ext2_resize_t rfs);
+static errcode_t reserve_sparse_super2_last_group(ext2_resize_t rfs,
+ ext2fs_block_bitmap meta_bmap);
/*
* Some helper CPP macros
*/
-#define FS_BLOCK_BM(fs, i) ((fs)->group_desc[(i)].bg_block_bitmap)
-#define FS_INODE_BM(fs, i) ((fs)->group_desc[(i)].bg_inode_bitmap)
-#define FS_INODE_TB(fs, i) ((fs)->group_desc[(i)].bg_inode_table)
+#define IS_BLOCK_BM(fs, i, blk) ((blk) == ext2fs_block_bitmap_loc((fs),(i)))
+#define IS_INODE_BM(fs, i, blk) ((blk) == ext2fs_inode_bitmap_loc((fs),(i)))
-#define IS_BLOCK_BM(fs, i, blk) ((blk) == FS_BLOCK_BM((fs),(i)))
-#define IS_INODE_BM(fs, i, blk) ((blk) == FS_INODE_BM((fs),(i)))
-
-#define IS_INODE_TB(fs, i, blk) (((blk) >= FS_INODE_TB((fs), (i))) && \
- ((blk) < (FS_INODE_TB((fs), (i)) + \
+#define IS_INODE_TB(fs, i, blk) (((blk) >= ext2fs_inode_table_loc((fs), (i))) && \
+ ((blk) < (ext2fs_inode_table_loc((fs), (i)) + \
(fs)->inode_blocks_per_group)))
+/* Some bigalloc helper macros which are more succint... */
+#define B2C(x) EXT2FS_B2C(fs, (x))
+#define C2B(x) EXT2FS_C2B(fs, (x))
+#define EQ_CLSTR(x, y) (B2C(x) == B2C(y))
+#define LE_CLSTR(x, y) (B2C(x) <= B2C(y))
+#define LT_CLSTR(x, y) (B2C(x) < B2C(y))
+#define GE_CLSTR(x, y) (B2C(x) >= B2C(y))
+#define GT_CLSTR(x, y) (B2C(x) > B2C(y))
+static int lazy_itable_init;
/*
* This is the top-level routine which does the dirty deed....
*/
-errcode_t resize_fs(ext2_filsys fs, blk_t *new_size, int flags,
- errcode_t (*progress)(ext2_resize_t rfs, int pass,
- unsigned long cur,
- unsigned long max_val))
+errcode_t resize_fs(ext2_filsys fs, blk64_t *new_size, int flags,
+ errcode_t (*progress)(ext2_resize_t rfs, int pass,
+ unsigned long cur,
+ unsigned long max_val))
{
ext2_resize_t rfs;
errcode_t retval;
+ struct resource_track rtrack, overall_track;
- retval = ext2fs_read_bitmaps(fs);
- if (retval)
- return retval;
-
/*
* Create the data structure
*/
retval = ext2fs_get_mem(sizeof(struct ext2_resize_struct), &rfs);
if (retval)
return retval;
- memset(rfs, 0, sizeof(struct ext2_resize_struct));
+ memset(rfs, 0, sizeof(struct ext2_resize_struct));
+ fs->priv_data = rfs;
rfs->old_fs = fs;
rfs->flags = flags;
rfs->itable_buf = 0;
rfs->progress = progress;
+
+ init_resource_track(&overall_track, "overall resize2fs", fs->io);
+ init_resource_track(&rtrack, "read_bitmaps", fs->io);
+ retval = ext2fs_read_bitmaps(fs);
+ if (retval)
+ goto errout;
+ print_resource_track(rfs, &rtrack, fs->io);
+
+ fs->super->s_state |= EXT2_ERROR_FS;
+ ext2fs_mark_super_dirty(fs);
+ ext2fs_flush(fs);
+
+ init_resource_track(&rtrack, "fix_uninit_block_bitmaps 1", fs->io);
+ fix_uninit_block_bitmaps(fs);
+ print_resource_track(rfs, &rtrack, fs->io);
retval = ext2fs_dup_handle(fs, &rfs->new_fs);
if (retval)
goto errout;
+ init_resource_track(&rtrack, "adjust_superblock", fs->io);
retval = adjust_superblock(rfs, *new_size);
if (retval)
goto errout;
+ print_resource_track(rfs, &rtrack, fs->io);
+
- *new_size = rfs->new_fs->super->s_blocks_count;
+ init_resource_track(&rtrack, "fix_uninit_block_bitmaps 2", fs->io);
+ fix_uninit_block_bitmaps(rfs->new_fs);
+ print_resource_track(rfs, &rtrack, fs->io);
+ /* Clear the block bitmap uninit flag for the last block group */
+ ext2fs_bg_flags_clear(rfs->new_fs, rfs->new_fs->group_desc_count - 1,
+ EXT2_BG_BLOCK_UNINIT);
+ *new_size = ext2fs_blocks_count(rfs->new_fs->super);
+
+ init_resource_track(&rtrack, "blocks_to_move", fs->io);
retval = blocks_to_move(rfs);
if (retval)
goto errout;
+ print_resource_track(rfs, &rtrack, fs->io);
#ifdef RESIZE2FS_DEBUG
if (rfs->flags & RESIZE_DEBUG_BMOVE)
- printf("Number of free blocks: %u/%u, Needed: %d\n",
- rfs->old_fs->super->s_free_blocks_count,
- rfs->new_fs->super->s_free_blocks_count,
+ printf("Number of free blocks: %llu/%llu, Needed: %llu\n",
+ ext2fs_free_blocks_count(rfs->old_fs->super),
+ ext2fs_free_blocks_count(rfs->new_fs->super),
rfs->needed_blocks);
#endif
-
+
+ init_resource_track(&rtrack, "block_mover", fs->io);
retval = block_mover(rfs);
if (retval)
goto errout;
+ print_resource_track(rfs, &rtrack, fs->io);
+ init_resource_track(&rtrack, "inode_scan_and_fix", fs->io);
retval = inode_scan_and_fix(rfs);
if (retval)
goto errout;
+ print_resource_track(rfs, &rtrack, fs->io);
+ init_resource_track(&rtrack, "inode_ref_fix", fs->io);
retval = inode_ref_fix(rfs);
if (retval)
goto errout;
+ print_resource_track(rfs, &rtrack, fs->io);
+ init_resource_track(&rtrack, "move_itables", fs->io);
retval = move_itables(rfs);
if (retval)
goto errout;
+ print_resource_track(rfs, &rtrack, fs->io);
+ init_resource_track(&rtrack, "calculate_summary_stats", fs->io);
retval = ext2fs_calculate_summary_stats(rfs->new_fs);
if (retval)
goto errout;
-
+ print_resource_track(rfs, &rtrack, fs->io);
+
+ init_resource_track(&rtrack, "fix_resize_inode", fs->io);
retval = fix_resize_inode(rfs->new_fs);
if (retval)
goto errout;
+ print_resource_track(rfs, &rtrack, fs->io);
+
+ init_resource_track(&rtrack, "fix_sb_journal_backup", fs->io);
+ retval = fix_sb_journal_backup(rfs->new_fs);
+ if (retval)
+ goto errout;
+ print_resource_track(rfs, &rtrack, fs->io);
+
+ retval = clear_sparse_super2_last_group(rfs);
+ if (retval)
+ goto errout;
- rfs->new_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
- retval = ext2fs_close(rfs->new_fs);
+ rfs->new_fs->super->s_state &= ~EXT2_ERROR_FS;
+ rfs->new_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
+
+ print_resource_track(rfs, &overall_track, fs->io);
+ retval = ext2fs_close_free(&rfs->new_fs);
if (retval)
goto errout;
rfs->flags = flags;
-
+
ext2fs_free(rfs->old_fs);
+ rfs->old_fs = NULL;
if (rfs->itable_buf)
ext2fs_free_mem(&rfs->itable_buf);
+ if (rfs->reserve_blocks)
+ ext2fs_free_block_bitmap(rfs->reserve_blocks);
+ if (rfs->move_blocks)
+ ext2fs_free_block_bitmap(rfs->move_blocks);
ext2fs_free_mem(&rfs);
-
+
return 0;
errout:
- if (rfs->new_fs)
+ if (rfs->new_fs) {
ext2fs_free(rfs->new_fs);
+ rfs->new_fs = NULL;
+ }
if (rfs->itable_buf)
ext2fs_free_mem(&rfs->itable_buf);
ext2fs_free_mem(&rfs);
return retval;
}
+/*
+ * Clean up the bitmaps for unitialized bitmaps
+ */
+static void fix_uninit_block_bitmaps(ext2_filsys fs)
+{
+ blk64_t blk, lblk;
+ dgrp_t g;
+ int i;
+
+ if (!(EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM)))
+ return;
+
+ for (g=0; g < fs->group_desc_count; g++) {
+ if (!(ext2fs_bg_flags_test(fs, g, EXT2_BG_BLOCK_UNINIT)))
+ continue;
+
+ blk = ext2fs_group_first_block2(fs, g);
+ lblk = ext2fs_group_last_block2(fs, g);
+ ext2fs_unmark_block_bitmap_range2(fs->block_map, blk,
+ lblk - blk + 1);
+
+ ext2fs_reserve_super_and_bgd(fs, g, fs->block_map);
+ ext2fs_mark_block_bitmap2(fs->block_map,
+ ext2fs_block_bitmap_loc(fs, g));
+ ext2fs_mark_block_bitmap2(fs->block_map,
+ ext2fs_inode_bitmap_loc(fs, g));
+ for (i = 0, blk = ext2fs_inode_table_loc(fs, g);
+ i < (unsigned int) fs->inode_blocks_per_group;
+ i++, blk++)
+ ext2fs_mark_block_bitmap2(fs->block_map, blk);
+ }
+}
+
/* --------------------------------------------------------------------
*
* Resize processing, phase 1.
*/
/*
+ * If the group descriptor's bitmap and inode table blocks are valid,
+ * release them in the new filesystem data structure, and mark them as
+ * reserved so the old inode table blocks don't get overwritten.
+ */
+static errcode_t free_gdp_blocks(ext2_filsys fs,
+ ext2fs_block_bitmap reserve_blocks,
+ ext2_filsys old_fs,
+ dgrp_t group)
+{
+ blk64_t blk;
+ int j;
+ dgrp_t i;
+ ext2fs_block_bitmap bg_map = NULL;
+ errcode_t retval = 0;
+ dgrp_t count = old_fs->group_desc_count - fs->group_desc_count;
+
+ /* If bigalloc, don't free metadata living in the same cluster */
+ if (EXT2FS_CLUSTER_RATIO(fs) > 1) {
+ retval = ext2fs_allocate_block_bitmap(fs, "bgdata", &bg_map);
+ if (retval)
+ goto out;
+
+ retval = mark_table_blocks(fs, bg_map);
+ if (retval)
+ goto out;
+ }
+
+ for (i = group; i < group + count; i++) {
+ blk = ext2fs_block_bitmap_loc(old_fs, i);
+ if (blk &&
+ (blk < ext2fs_blocks_count(fs->super)) &&
+ !(bg_map && ext2fs_test_block_bitmap2(bg_map, blk))) {
+ ext2fs_block_alloc_stats2(fs, blk, -1);
+ ext2fs_mark_block_bitmap2(reserve_blocks, blk);
+ }
+
+ blk = ext2fs_inode_bitmap_loc(old_fs, i);
+ if (blk &&
+ (blk < ext2fs_blocks_count(fs->super)) &&
+ !(bg_map && ext2fs_test_block_bitmap2(bg_map, blk))) {
+ ext2fs_block_alloc_stats2(fs, blk, -1);
+ ext2fs_mark_block_bitmap2(reserve_blocks, blk);
+ }
+
+ blk = ext2fs_inode_table_loc(old_fs, i);
+ for (j = 0;
+ j < fs->inode_blocks_per_group; j++, blk++) {
+ if (blk >= ext2fs_blocks_count(fs->super) ||
+ (bg_map && ext2fs_test_block_bitmap2(bg_map, blk)))
+ continue;
+ ext2fs_block_alloc_stats2(fs, blk, -1);
+ ext2fs_mark_block_bitmap2(reserve_blocks, blk);
+ }
+ }
+
+out:
+ if (bg_map)
+ ext2fs_free_block_bitmap(bg_map);
+ return retval;
+}
+
+/*
* This routine is shared by the online and offline resize routines.
* All of the information which is adjusted in memory is done here.
*/
-errcode_t adjust_fs_info(ext2_filsys fs, ext2_filsys old_fs, blk_t new_size)
+errcode_t adjust_fs_info(ext2_filsys fs, ext2_filsys old_fs,
+ ext2fs_block_bitmap reserve_blocks, blk64_t new_size)
{
errcode_t retval;
- int overhead = 0;
- int rem;
- blk_t blk, group_block;
- ext2_ino_t real_end;
- int adj, old_numblocks, numblocks, adjblocks;
- unsigned long i, j, old_desc_blocks, max_group;
+ blk64_t overhead = 0;
+ blk64_t rem;
+ blk64_t blk, group_block;
+ blk64_t real_end;
+ blk64_t old_numblocks, numblocks, adjblocks;
+ unsigned long i, j, old_desc_blocks;
unsigned int meta_bg, meta_bg_size;
- int has_super;
+ int has_super, csum_flag;
unsigned long long new_inodes; /* u64 to check for overflow */
+ double percent;
- fs->super->s_blocks_count = new_size;
+ ext2fs_blocks_count_set(fs->super, new_size);
retry:
- fs->group_desc_count = ext2fs_div_ceil(fs->super->s_blocks_count -
+ fs->group_desc_count = ext2fs_div64_ceil(ext2fs_blocks_count(fs->super) -
fs->super->s_first_data_block,
EXT2_BLOCKS_PER_GROUP(fs->super));
if (fs->group_desc_count == 0)
return EXT2_ET_TOOSMALL;
- fs->desc_blocks = ext2fs_div_ceil(fs->group_desc_count,
+ fs->desc_blocks = ext2fs_div_ceil(fs->group_desc_count,
EXT2_DESC_PER_BLOCK(fs->super));
/*
overhead = (int) (2 + fs->inode_blocks_per_group);
if (ext2fs_bg_has_super(fs, fs->group_desc_count - 1))
- overhead += 1 + fs->desc_blocks +
+ overhead += 1 + fs->desc_blocks +
fs->super->s_reserved_gdt_blocks;
/*
* necessary data structures. If not, we need to get rid of
* it.
*/
- rem = (fs->super->s_blocks_count - fs->super->s_first_data_block) %
+ rem = (ext2fs_blocks_count(fs->super) - fs->super->s_first_data_block) %
fs->super->s_blocks_per_group;
if ((fs->group_desc_count == 1) && rem && (rem < overhead))
return EXT2_ET_TOOSMALL;
- if (rem && (rem < overhead+50)) {
- fs->super->s_blocks_count -= rem;
+ if ((fs->group_desc_count > 1) && rem && (rem < overhead+50)) {
+ ext2fs_blocks_count_set(fs->super,
+ ext2fs_blocks_count(fs->super) - rem);
goto retry;
}
/*
/*
* Adjust the number of free blocks
*/
- blk = old_fs->super->s_blocks_count;
- if (blk > fs->super->s_blocks_count)
- fs->super->s_free_blocks_count -=
- (blk - fs->super->s_blocks_count);
+ blk = ext2fs_blocks_count(old_fs->super);
+ if (blk > ext2fs_blocks_count(fs->super))
+ ext2fs_free_blocks_count_set(fs->super,
+ ext2fs_free_blocks_count(fs->super) -
+ (blk - ext2fs_blocks_count(fs->super)));
else
- fs->super->s_free_blocks_count +=
- (fs->super->s_blocks_count - blk);
+ ext2fs_free_blocks_count_set(fs->super,
+ ext2fs_free_blocks_count(fs->super) +
+ (ext2fs_blocks_count(fs->super) - blk));
/*
* Adjust the number of reserved blocks
*/
- blk = (__u64)old_fs->super->s_r_blocks_count * 100 /
- old_fs->super->s_blocks_count;
- fs->super->s_r_blocks_count = e2p_percent(blk,
- fs->super->s_blocks_count);
+ percent = (ext2fs_r_blocks_count(old_fs->super) * 100.0) /
+ ext2fs_blocks_count(old_fs->super);
+ ext2fs_r_blocks_count_set(fs->super,
+ (percent * ext2fs_blocks_count(fs->super) /
+ 100.0));
/*
* Adjust the bitmaps for size
*/
- retval = ext2fs_resize_inode_bitmap(fs->super->s_inodes_count,
+ retval = ext2fs_resize_inode_bitmap2(fs->super->s_inodes_count,
fs->super->s_inodes_count,
fs->inode_map);
if (retval) goto errout;
-
- real_end = ((EXT2_BLOCKS_PER_GROUP(fs->super)
- * fs->group_desc_count)) - 1 +
- fs->super->s_first_data_block;
- retval = ext2fs_resize_block_bitmap(fs->super->s_blocks_count-1,
- real_end, fs->block_map);
+ real_end = EXT2_GROUPS_TO_BLOCKS(fs->super, fs->group_desc_count) - 1 +
+ fs->super->s_first_data_block;
+ retval = ext2fs_resize_block_bitmap2(new_size - 1,
+ real_end, fs->block_map);
if (retval) goto errout;
/*
+ * If we are growing the file system, also grow the size of
+ * the reserve_blocks bitmap
+ */
+ if (reserve_blocks && new_size > ext2fs_blocks_count(old_fs->super)) {
+ retval = ext2fs_resize_block_bitmap2(new_size - 1,
+ real_end, reserve_blocks);
+ if (retval) goto errout;
+ }
+
+ /*
* Reallocate the group descriptors as necessary.
*/
if (old_fs->desc_blocks != fs->desc_blocks) {
&fs->group_desc);
if (retval)
goto errout;
- if (fs->desc_blocks > old_fs->desc_blocks)
- memset((char *) fs->group_desc +
+ if (fs->desc_blocks > old_fs->desc_blocks)
+ memset((char *) fs->group_desc +
(old_fs->desc_blocks * fs->blocksize), 0,
(fs->desc_blocks - old_fs->desc_blocks) *
fs->blocksize);
* s_reserved_gdt_blocks if possible to avoid needing to move
* the inode table either now or in the future.
*/
- if ((fs->super->s_feature_compat &
+ if ((fs->super->s_feature_compat &
EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
(old_fs->desc_blocks != fs->desc_blocks)) {
int new;
- new = ((int) fs->super->s_reserved_gdt_blocks) +
+ new = ((int) fs->super->s_reserved_gdt_blocks) +
(old_fs->desc_blocks - fs->desc_blocks);
if (new < 0)
new = 0;
if (new > (int) fs->blocksize/4)
new = fs->blocksize/4;
fs->super->s_reserved_gdt_blocks = new;
- if (new == 0)
- fs->super->s_feature_compat &=
- ~EXT2_FEATURE_COMPAT_RESIZE_INODE;
+ }
+
+ if ((fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
+ (fs->super->s_first_meta_bg > fs->desc_blocks)) {
+ fs->super->s_feature_incompat &=
+ ~EXT2_FEATURE_INCOMPAT_META_BG;
+ fs->super->s_first_meta_bg = 0;
}
/*
- * If we are shrinking the number block groups, we're done and
- * can exit now.
+ * Update the location of the backup superblocks if the
+ * sparse_super2 feature is enabled.
+ */
+ if (fs->super->s_feature_compat & EXT4_FEATURE_COMPAT_SPARSE_SUPER2) {
+ dgrp_t last_bg = fs->group_desc_count - 1;
+ dgrp_t old_last_bg = old_fs->group_desc_count - 1;
+
+ if (last_bg > old_last_bg) {
+ if (old_fs->group_desc_count == 1)
+ fs->super->s_backup_bgs[0] = 1;
+ if (old_fs->group_desc_count == 1 &&
+ fs->super->s_backup_bgs[0])
+ fs->super->s_backup_bgs[0] = last_bg;
+ else if (fs->super->s_backup_bgs[1])
+ fs->super->s_backup_bgs[1] = last_bg;
+ } else if (last_bg < old_last_bg) {
+ if (fs->super->s_backup_bgs[0] > last_bg)
+ fs->super->s_backup_bgs[0] = 0;
+ if (fs->super->s_backup_bgs[1] > last_bg)
+ fs->super->s_backup_bgs[1] = 0;
+ if (last_bg > 1 &&
+ old_fs->super->s_backup_bgs[1] == old_last_bg)
+ fs->super->s_backup_bgs[1] = last_bg;
+ }
+ }
+
+ /*
+ * If we are shrinking the number of block groups, we're done
+ * and can exit now.
*/
if (old_fs->group_desc_count > fs->group_desc_count) {
- retval = 0;
+ /*
+ * Check the block groups that we are chopping off
+ * and free any blocks associated with their metadata
+ */
+ retval = free_gdp_blocks(fs, reserve_blocks, old_fs,
+ fs->group_desc_count);
goto errout;
}
/*
* Fix the count of the last (old) block group
*/
- old_numblocks = (old_fs->super->s_blocks_count -
+ old_numblocks = (ext2fs_blocks_count(old_fs->super) -
old_fs->super->s_first_data_block) %
old_fs->super->s_blocks_per_group;
if (!old_numblocks)
old_numblocks = old_fs->super->s_blocks_per_group;
if (old_fs->group_desc_count == fs->group_desc_count) {
- numblocks = (fs->super->s_blocks_count -
+ numblocks = (ext2fs_blocks_count(fs->super) -
fs->super->s_first_data_block) %
fs->super->s_blocks_per_group;
if (!numblocks)
} else
numblocks = fs->super->s_blocks_per_group;
i = old_fs->group_desc_count - 1;
- fs->group_desc[i].bg_free_blocks_count += (numblocks-old_numblocks);
-
+ ext2fs_bg_free_blocks_count_set(fs, i, ext2fs_bg_free_blocks_count(fs, i) + (numblocks - old_numblocks));
+ ext2fs_group_desc_csum_set(fs, i);
+
/*
* If the number of block groups is staying the same, we're
* done and can exit now. (If the number block groups is
/*
* Initialize the new block group descriptors
*/
- group_block = fs->super->s_first_data_block +
- old_fs->group_desc_count * fs->super->s_blocks_per_group;
-
- adj = old_fs->group_desc_count;
- max_group = fs->group_desc_count - adj;
+ group_block = ext2fs_group_first_block2(fs,
+ old_fs->group_desc_count);
+ csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+ if (access("/sys/fs/ext4/features/lazy_itable_init", F_OK) == 0)
+ lazy_itable_init = 1;
if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
old_desc_blocks = fs->super->s_first_meta_bg;
else
- old_desc_blocks = fs->desc_blocks +
+ old_desc_blocks = fs->desc_blocks +
fs->super->s_reserved_gdt_blocks;
+
+ /*
+ * If we changed the number of block_group descriptor blocks,
+ * we need to make sure they are all marked as reserved in the
+ * file systems's block allocation map.
+ */
+ for (i = 0; i < old_fs->group_desc_count; i++)
+ ext2fs_reserve_super_and_bgd(fs, i, fs->block_map);
+
for (i = old_fs->group_desc_count;
i < fs->group_desc_count; i++) {
- memset(&fs->group_desc[i], 0,
+ memset(ext2fs_group_desc(fs, fs->group_desc, i), 0,
sizeof(struct ext2_group_desc));
adjblocks = 0;
- if (i == fs->group_desc_count-1) {
- numblocks = (fs->super->s_blocks_count -
- fs->super->s_first_data_block) %
- fs->super->s_blocks_per_group;
- if (!numblocks)
- numblocks = fs->super->s_blocks_per_group;
- } else
- numblocks = fs->super->s_blocks_per_group;
+ ext2fs_bg_flags_zap(fs, i);
+ if (csum_flag) {
+ ext2fs_bg_flags_set(fs, i, EXT2_BG_INODE_UNINIT);
+ if (!lazy_itable_init)
+ ext2fs_bg_flags_set(fs, i,
+ EXT2_BG_INODE_ZEROED);
+ ext2fs_bg_itable_unused_set(fs, i,
+ fs->super->s_inodes_per_group);
+ }
+
+ numblocks = ext2fs_group_blocks_count(fs, i);
+ if ((i < fs->group_desc_count - 1) && csum_flag)
+ ext2fs_bg_flags_set(fs, i, EXT2_BG_BLOCK_UNINIT);
has_super = ext2fs_bg_has_super(fs, i);
if (has_super) {
- ext2fs_mark_block_bitmap(fs->block_map, group_block);
+ ext2fs_block_alloc_stats2(fs, group_block, +1);
adjblocks++;
}
meta_bg_size = EXT2_DESC_PER_BLOCK(fs->super);
(meta_bg < fs->super->s_first_meta_bg)) {
if (has_super) {
for (j=0; j < old_desc_blocks; j++)
- ext2fs_mark_block_bitmap(fs->block_map,
- group_block + 1 + j);
+ ext2fs_block_alloc_stats2(fs,
+ group_block + 1 + j, +1);
adjblocks += old_desc_blocks;
}
} else {
if (((i % meta_bg_size) == 0) ||
((i % meta_bg_size) == 1) ||
((i % meta_bg_size) == (meta_bg_size-1)))
- ext2fs_mark_block_bitmap(fs->block_map,
- group_block + has_super);
+ ext2fs_block_alloc_stats2(fs,
+ group_block + has_super, +1);
}
-
+
adjblocks += 2 + fs->inode_blocks_per_group;
-
+
numblocks -= adjblocks;
- fs->super->s_free_blocks_count -= adjblocks;
+ ext2fs_free_blocks_count_set(fs->super,
+ ext2fs_free_blocks_count(fs->super) - adjblocks);
fs->super->s_free_inodes_count +=
fs->super->s_inodes_per_group;
- fs->group_desc[i].bg_free_blocks_count = numblocks;
- fs->group_desc[i].bg_free_inodes_count =
- fs->super->s_inodes_per_group;
- fs->group_desc[i].bg_used_dirs_count = 0;
+ ext2fs_bg_free_blocks_count_set(fs, i, numblocks);
+ ext2fs_bg_free_inodes_count_set(fs, i,
+ fs->super->s_inodes_per_group);
+ ext2fs_bg_used_dirs_count_set(fs, i, 0);
+ ext2fs_group_desc_csum_set(fs, i);
retval = ext2fs_allocate_group_table(fs, i, 0);
if (retval) goto errout;
}
retval = 0;
+ /*
+ * Mark all of the metadata blocks as reserved so they won't
+ * get allocated by the call to ext2fs_allocate_group_table()
+ * in blocks_to_move(), where we allocate new blocks to
+ * replace those allocation bitmap and inode table blocks
+ * which have to get relocated to make space for an increased
+ * number of the block group descriptors.
+ */
+ if (reserve_blocks)
+ mark_table_blocks(fs, reserve_blocks);
+
errout:
return (retval);
}
* This routine adjusts the superblock and other data structures, both
* in disk as well as in memory...
*/
-static errcode_t adjust_superblock(ext2_resize_t rfs, blk_t new_size)
+static errcode_t adjust_superblock(ext2_resize_t rfs, blk64_t new_size)
{
- ext2_filsys fs;
+ ext2_filsys fs = rfs->new_fs;
int adj = 0;
errcode_t retval;
- blk_t group_block;
+ blk64_t group_block;
unsigned long i;
unsigned long max_group;
-
- fs = rfs->new_fs;
+
ext2fs_mark_super_dirty(fs);
ext2fs_mark_bb_dirty(fs);
ext2fs_mark_ib_dirty(fs);
- retval = adjust_fs_info(fs, rfs->old_fs, new_size);
+ retval = ext2fs_allocate_block_bitmap(fs, _("reserved blocks"),
+ &rfs->reserve_blocks);
+ if (retval)
+ return retval;
+
+ retval = adjust_fs_info(fs, rfs->old_fs, rfs->reserve_blocks, new_size);
if (retval)
goto errout;
}
/*
- * Initialize the new block group descriptors
+ * If we are using uninit_bg (aka GDT_CSUM) and the kernel
+ * supports lazy inode initialization, we can skip
+ * initializing the inode table.
+ */
+ if (lazy_itable_init &&
+ EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+ retval = 0;
+ goto errout;
+ }
+
+ /*
+ * Initialize the inode table
*/
retval = ext2fs_get_array(fs->blocksize, fs->inode_blocks_per_group,
&rfs->itable_buf);
goto errout;
memset(rfs->itable_buf, 0, fs->blocksize * fs->inode_blocks_per_group);
- group_block = fs->super->s_first_data_block +
- rfs->old_fs->group_desc_count * fs->super->s_blocks_per_group;
-
+ group_block = ext2fs_group_first_block2(fs,
+ rfs->old_fs->group_desc_count);
adj = rfs->old_fs->group_desc_count;
max_group = fs->group_desc_count - adj;
if (rfs->progress) {
/*
* Write out the new inode table
*/
- retval = io_channel_write_blk(fs->io,
- fs->group_desc[i].bg_inode_table,
- fs->inode_blocks_per_group,
- rfs->itable_buf);
+ retval = io_channel_write_blk64(fs->io,
+ ext2fs_inode_table_loc(fs, i),
+ fs->inode_blocks_per_group,
+ rfs->itable_buf);
if (retval) goto errout;
io_channel_flush(fs->io);
static errcode_t mark_table_blocks(ext2_filsys fs,
ext2fs_block_bitmap bmap)
{
- blk_t b;
- unsigned int j;
dgrp_t i;
- unsigned long meta_bg_size;
- unsigned int old_desc_blocks;
+ blk64_t blk;
- meta_bg_size = EXT2_DESC_PER_BLOCK(fs->super);
- if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
- old_desc_blocks = fs->super->s_first_meta_bg;
- else
- old_desc_blocks = fs->desc_blocks +
- fs->super->s_reserved_gdt_blocks;
for (i = 0; i < fs->group_desc_count; i++) {
ext2fs_reserve_super_and_bgd(fs, i, bmap);
-
+
/*
* Mark the blocks used for the inode table
*/
- for (j = 0, b = fs->group_desc[i].bg_inode_table;
- j < (unsigned int) fs->inode_blocks_per_group;
- j++, b++)
- ext2fs_mark_block_bitmap(bmap, b);
-
+ blk = ext2fs_inode_table_loc(fs, i);
+ if (blk)
+ ext2fs_mark_block_bitmap_range2(bmap, blk,
+ fs->inode_blocks_per_group);
+
/*
- * Mark block used for the block bitmap
+ * Mark block used for the block bitmap
*/
- ext2fs_mark_block_bitmap(bmap,
- fs->group_desc[i].bg_block_bitmap);
+ blk = ext2fs_block_bitmap_loc(fs, i);
+ if (blk)
+ ext2fs_mark_block_bitmap2(bmap, blk);
/*
- * Mark block used for the inode bitmap
+ * Mark block used for the inode bitmap
*/
- ext2fs_mark_block_bitmap(bmap,
- fs->group_desc[i].bg_inode_bitmap);
+ blk = ext2fs_inode_bitmap_loc(fs, i);
+ if (blk)
+ ext2fs_mark_block_bitmap2(bmap, blk);
}
return 0;
}
*/
static void mark_fs_metablock(ext2_resize_t rfs,
ext2fs_block_bitmap meta_bmap,
- int group, blk_t blk)
+ int group, blk64_t blk)
{
ext2_filsys fs = rfs->new_fs;
-
- ext2fs_mark_block_bitmap(rfs->reserve_blocks, blk);
- ext2fs_mark_block_bitmap(fs->block_map, blk);
+
+ ext2fs_mark_block_bitmap2(rfs->reserve_blocks, blk);
+ ext2fs_block_alloc_stats2(fs, blk, +1);
/*
* Check to see if we overlap with the inode or block bitmap,
* mark it as a block to be moved.
*/
if (IS_BLOCK_BM(fs, group, blk)) {
- FS_BLOCK_BM(fs, group) = 0;
+ ext2fs_block_bitmap_loc_set(fs, group, 0);
rfs->needed_blocks++;
- } else if (IS_INODE_BM(fs, group, blk)) {
- FS_INODE_BM(fs, group) = 0;
+ return;
+ }
+ if (IS_INODE_BM(fs, group, blk)) {
+ ext2fs_inode_bitmap_loc_set(fs, group, 0);
rfs->needed_blocks++;
- } else if (IS_INODE_TB(fs, group, blk)) {
- FS_INODE_TB(fs, group) = 0;
+ return;
+ }
+ if (IS_INODE_TB(fs, group, blk)) {
+ ext2fs_inode_table_loc_set(fs, group, 0);
rfs->needed_blocks++;
- } else if (ext2fs_test_block_bitmap(rfs->old_fs->block_map, blk) &&
- !ext2fs_test_block_bitmap(meta_bmap, blk)) {
- ext2fs_mark_block_bitmap(rfs->move_blocks, blk);
+ return;
+ }
+ if (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_FLEX_BG) {
+ dgrp_t i;
+
+ for (i=0; i < rfs->old_fs->group_desc_count; i++) {
+ if (IS_BLOCK_BM(fs, i, blk)) {
+ ext2fs_block_bitmap_loc_set(fs, i, 0);
+ rfs->needed_blocks++;
+ return;
+ }
+ if (IS_INODE_BM(fs, i, blk)) {
+ ext2fs_inode_bitmap_loc_set(fs, i, 0);
+ rfs->needed_blocks++;
+ return;
+ }
+ if (IS_INODE_TB(fs, i, blk)) {
+ ext2fs_inode_table_loc_set(fs, i, 0);
+ rfs->needed_blocks++;
+ return;
+ }
+ }
+ }
+ if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM) &&
+ (ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT))) {
+ /*
+ * If the block bitmap is uninitialized, which means
+ * nothing other than standard metadata in use.
+ */
+ return;
+ } else if (ext2fs_test_block_bitmap2(rfs->old_fs->block_map, blk) &&
+ !ext2fs_test_block_bitmap2(meta_bmap, blk)) {
+ ext2fs_mark_block_bitmap2(rfs->move_blocks, blk);
rfs->needed_blocks++;
}
}
static errcode_t blocks_to_move(ext2_resize_t rfs)
{
int j, has_super;
- dgrp_t i, max_groups;
- blk_t blk, group_blk;
- unsigned long old_blocks, new_blocks;
+ dgrp_t i, max_groups, g;
+ blk64_t blk, group_blk;
+ blk64_t old_blocks, new_blocks, group_end, cluster_freed;
+ blk64_t new_size;
unsigned int meta_bg, meta_bg_size;
errcode_t retval;
ext2_filsys fs, old_fs;
- ext2fs_block_bitmap meta_bmap;
+ ext2fs_block_bitmap meta_bmap, new_meta_bmap = NULL;
+ int flex_bg;
fs = rfs->new_fs;
old_fs = rfs->old_fs;
- if (old_fs->super->s_blocks_count > fs->super->s_blocks_count)
+ if (ext2fs_blocks_count(old_fs->super) > ext2fs_blocks_count(fs->super))
fs = rfs->old_fs;
-
- retval = ext2fs_allocate_block_bitmap(fs, _("reserved blocks"),
- &rfs->reserve_blocks);
- if (retval)
- return retval;
retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
&rfs->move_blocks);
if (retval)
return retval;
- retval = ext2fs_allocate_block_bitmap(fs, _("meta-data blocks"),
+ retval = ext2fs_allocate_block_bitmap(fs, _("meta-data blocks"),
&meta_bmap);
if (retval)
return retval;
-
+
retval = mark_table_blocks(old_fs, meta_bmap);
if (retval)
return retval;
fs = rfs->new_fs;
-
+
+ /*
+ * If we're shrinking the filesystem, we need to move any
+ * group's metadata blocks (either allocation bitmaps or the
+ * inode table) which are beyond the end of the new
+ * filesystem.
+ */
+ new_size = ext2fs_blocks_count(fs->super);
+ if (new_size < ext2fs_blocks_count(old_fs->super)) {
+ for (g = 0; g < fs->group_desc_count; g++) {
+ int realloc = 0;
+ /*
+ * ext2fs_allocate_group_table will re-allocate any
+ * metadata blocks whose location is set to zero.
+ */
+ if (ext2fs_block_bitmap_loc(fs, g) >= new_size) {
+ ext2fs_block_bitmap_loc_set(fs, g, 0);
+ realloc = 1;
+ }
+ if (ext2fs_inode_bitmap_loc(fs, g) >= new_size) {
+ ext2fs_inode_bitmap_loc_set(fs, g, 0);
+ realloc = 1;
+ }
+ if ((ext2fs_inode_table_loc(fs, g) +
+ fs->inode_blocks_per_group) > new_size) {
+ ext2fs_inode_table_loc_set(fs, g, 0);
+ realloc = 1;
+ }
+
+ if (realloc) {
+ retval = ext2fs_allocate_group_table(fs, g, 0);
+ if (retval)
+ return retval;
+ }
+ }
+ }
+
/*
* If we're shrinking the filesystem, we need to move all of
* the blocks that don't fit any more
*/
- for (blk = fs->super->s_blocks_count;
- blk < old_fs->super->s_blocks_count; blk++) {
- if (ext2fs_test_block_bitmap(old_fs->block_map, blk) &&
- !ext2fs_test_block_bitmap(meta_bmap, blk)) {
- ext2fs_mark_block_bitmap(rfs->move_blocks, blk);
+ for (blk = ext2fs_blocks_count(fs->super);
+ blk < ext2fs_blocks_count(old_fs->super); blk++) {
+ g = ext2fs_group_of_blk2(fs, blk);
+ if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM) &&
+ ext2fs_bg_flags_test(old_fs, g, EXT2_BG_BLOCK_UNINIT)) {
+ /*
+ * The block bitmap is uninitialized, so skip
+ * to the next block group.
+ */
+ blk = ext2fs_group_first_block2(fs, g+1) - 1;
+ continue;
+ }
+ if (ext2fs_test_block_bitmap2(old_fs->block_map, blk) &&
+ !ext2fs_test_block_bitmap2(meta_bmap, blk)) {
+ ext2fs_mark_block_bitmap2(rfs->move_blocks, blk);
rfs->needed_blocks++;
}
- ext2fs_mark_block_bitmap(rfs->reserve_blocks, blk);
+ ext2fs_mark_block_bitmap2(rfs->reserve_blocks, blk);
}
-
- if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) {
+
+ if (old_fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
old_blocks = old_fs->super->s_first_meta_bg;
+ else
+ old_blocks = old_fs->desc_blocks +
+ old_fs->super->s_reserved_gdt_blocks;
+ if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
new_blocks = fs->super->s_first_meta_bg;
- } else {
- old_blocks = old_fs->desc_blocks + old_fs->super->s_reserved_gdt_blocks;
+ else
new_blocks = fs->desc_blocks + fs->super->s_reserved_gdt_blocks;
- }
-
+
+ retval = reserve_sparse_super2_last_group(rfs, meta_bmap);
+ if (retval)
+ goto errout;
+
if (old_blocks == new_blocks) {
retval = 0;
goto errout;
* blocks as free.
*/
if (old_blocks > new_blocks) {
+ if (EXT2FS_CLUSTER_RATIO(fs) > 1) {
+ retval = ext2fs_allocate_block_bitmap(fs,
+ _("new meta blocks"),
+ &new_meta_bmap);
+ if (retval)
+ goto errout;
+
+ retval = mark_table_blocks(fs, new_meta_bmap);
+ if (retval)
+ goto errout;
+ }
+
for (i = 0; i < max_groups; i++) {
if (!ext2fs_bg_has_super(fs, i)) {
group_blk += fs->super->s_blocks_per_group;
continue;
}
- for (blk = group_blk+1+new_blocks;
- blk < group_blk+1+old_blocks; blk++) {
- ext2fs_unmark_block_bitmap(fs->block_map,
- blk);
+ group_end = group_blk + 1 + old_blocks;
+ for (blk = group_blk + 1 + new_blocks;
+ blk < group_end;) {
+ if (new_meta_bmap == NULL ||
+ !ext2fs_test_block_bitmap2(new_meta_bmap,
+ blk)) {
+ cluster_freed =
+ EXT2FS_CLUSTER_RATIO(fs) -
+ (blk &
+ EXT2FS_CLUSTER_MASK(fs));
+ if (cluster_freed > group_end - blk)
+ cluster_freed = group_end - blk;
+ ext2fs_block_alloc_stats2(fs, blk, -1);
+ blk += EXT2FS_CLUSTER_RATIO(fs);
+ rfs->needed_blocks -= cluster_freed;
+ continue;
+ }
rfs->needed_blocks--;
+ blk++;
}
group_blk += fs->super->s_blocks_per_group;
}
}
/*
* If we're increasing the number of descriptor blocks, life
- * gets interesting....
+ * gets interesting....
*/
meta_bg_size = EXT2_DESC_PER_BLOCK(fs->super);
+ flex_bg = fs->super->s_feature_incompat &
+ EXT4_FEATURE_INCOMPAT_FLEX_BG;
+ /* first reserve all of the existing fs meta blocks */
for (i = 0; i < max_groups; i++) {
has_super = ext2fs_bg_has_super(fs, i);
if (has_super)
if (has_super) {
for (blk = group_blk+1;
blk < group_blk + 1 + new_blocks; blk++)
- mark_fs_metablock(rfs, meta_bmap,
+ mark_fs_metablock(rfs, meta_bmap,
i, blk);
}
} else {
group_blk + has_super);
}
- if (fs->group_desc[i].bg_inode_table &&
- fs->group_desc[i].bg_inode_bitmap &&
- fs->group_desc[i].bg_block_bitmap)
- goto next_group;
-
/*
* Reserve the existing meta blocks that we know
* aren't to be moved.
+ *
+ * For flex_bg file systems, in order to avoid
+ * overwriting fs metadata (especially inode table
+ * blocks) belonging to a different block group when
+ * we are relocating the inode tables, we need to
+ * reserve all existing fs metadata blocks.
*/
- if (fs->group_desc[i].bg_block_bitmap)
- ext2fs_mark_block_bitmap(rfs->reserve_blocks,
- fs->group_desc[i].bg_block_bitmap);
- if (fs->group_desc[i].bg_inode_bitmap)
- ext2fs_mark_block_bitmap(rfs->reserve_blocks,
- fs->group_desc[i].bg_inode_bitmap);
- if (fs->group_desc[i].bg_inode_table)
- for (blk = fs->group_desc[i].bg_inode_table, j=0;
- j < fs->inode_blocks_per_group ; j++, blk++)
- ext2fs_mark_block_bitmap(rfs->reserve_blocks,
- blk);
+ if (ext2fs_block_bitmap_loc(fs, i))
+ ext2fs_mark_block_bitmap2(rfs->reserve_blocks,
+ ext2fs_block_bitmap_loc(fs, i));
+ else if (flex_bg && i < old_fs->group_desc_count)
+ ext2fs_mark_block_bitmap2(rfs->reserve_blocks,
+ ext2fs_block_bitmap_loc(old_fs, i));
+
+ if (ext2fs_inode_bitmap_loc(fs, i))
+ ext2fs_mark_block_bitmap2(rfs->reserve_blocks,
+ ext2fs_inode_bitmap_loc(fs, i));
+ else if (flex_bg && i < old_fs->group_desc_count)
+ ext2fs_mark_block_bitmap2(rfs->reserve_blocks,
+ ext2fs_inode_bitmap_loc(old_fs, i));
+
+ if (ext2fs_inode_table_loc(fs, i))
+ ext2fs_mark_block_bitmap_range2(rfs->reserve_blocks,
+ ext2fs_inode_table_loc(fs, i),
+ fs->inode_blocks_per_group);
+ else if (flex_bg && i < old_fs->group_desc_count)
+ ext2fs_mark_block_bitmap_range2(rfs->reserve_blocks,
+ ext2fs_inode_table_loc(old_fs, i),
+ old_fs->inode_blocks_per_group);
+
+ group_blk += rfs->new_fs->super->s_blocks_per_group;
+ }
+
+ /* Allocate the missing data structures */
+ for (i = 0; i < max_groups; i++) {
+ if (ext2fs_inode_table_loc(fs, i) &&
+ ext2fs_inode_bitmap_loc(fs, i) &&
+ ext2fs_block_bitmap_loc(fs, i))
+ continue;
- /*
- * Allocate the missing data structures
- */
retval = ext2fs_allocate_group_table(fs, i,
rfs->reserve_blocks);
if (retval)
* For those structures that have changed, we need to
* do bookkeepping.
*/
- if (FS_BLOCK_BM(old_fs, i) !=
- (blk = FS_BLOCK_BM(fs, i))) {
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- if (ext2fs_test_block_bitmap(old_fs->block_map, blk) &&
- !ext2fs_test_block_bitmap(meta_bmap, blk))
- ext2fs_mark_block_bitmap(rfs->move_blocks,
+ if (ext2fs_block_bitmap_loc(old_fs, i) !=
+ (blk = ext2fs_block_bitmap_loc(fs, i))) {
+ ext2fs_block_alloc_stats2(fs, blk, +1);
+ if (ext2fs_test_block_bitmap2(old_fs->block_map, blk) &&
+ !ext2fs_test_block_bitmap2(meta_bmap, blk))
+ ext2fs_mark_block_bitmap2(rfs->move_blocks,
blk);
}
- if (FS_INODE_BM(old_fs, i) !=
- (blk = FS_INODE_BM(fs, i))) {
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- if (ext2fs_test_block_bitmap(old_fs->block_map, blk) &&
- !ext2fs_test_block_bitmap(meta_bmap, blk))
- ext2fs_mark_block_bitmap(rfs->move_blocks,
+ if (ext2fs_inode_bitmap_loc(old_fs, i) !=
+ (blk = ext2fs_inode_bitmap_loc(fs, i))) {
+ ext2fs_block_alloc_stats2(fs, blk, +1);
+ if (ext2fs_test_block_bitmap2(old_fs->block_map, blk) &&
+ !ext2fs_test_block_bitmap2(meta_bmap, blk))
+ ext2fs_mark_block_bitmap2(rfs->move_blocks,
blk);
}
* can't have the inode table be destroyed during the
* block relocation phase.
*/
- if (FS_INODE_TB(fs, i) == FS_INODE_TB(old_fs, i))
- goto next_group; /* inode table not moved */
+ if (ext2fs_inode_table_loc(fs, i) == ext2fs_inode_table_loc(old_fs, i))
+ continue; /* inode table not moved */
rfs->needed_blocks += fs->inode_blocks_per_group;
/*
* Mark the new inode table as in use in the new block
- * allocation bitmap, and move any blocks that might
+ * allocation bitmap, and move any blocks that might
* be necessary.
*/
- for (blk = fs->group_desc[i].bg_inode_table, j=0;
+ for (blk = ext2fs_inode_table_loc(fs, i), j=0;
j < fs->inode_blocks_per_group ; j++, blk++) {
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- if (ext2fs_test_block_bitmap(old_fs->block_map, blk) &&
- !ext2fs_test_block_bitmap(meta_bmap, blk))
- ext2fs_mark_block_bitmap(rfs->move_blocks,
+ ext2fs_block_alloc_stats2(fs, blk, +1);
+ if (ext2fs_test_block_bitmap2(old_fs->block_map, blk) &&
+ !ext2fs_test_block_bitmap2(meta_bmap, blk))
+ ext2fs_mark_block_bitmap2(rfs->move_blocks,
blk);
}
-
+
/*
* Make sure the old inode table is reserved in the
* block reservation bitmap.
*/
- for (blk = rfs->old_fs->group_desc[i].bg_inode_table, j=0;
+ for (blk = ext2fs_inode_table_loc(rfs->old_fs, i), j=0;
j < fs->inode_blocks_per_group ; j++, blk++)
- ext2fs_mark_block_bitmap(rfs->reserve_blocks, blk);
-
- next_group:
- group_blk += rfs->new_fs->super->s_blocks_per_group;
+ ext2fs_mark_block_bitmap2(rfs->reserve_blocks, blk);
}
retval = 0;
errout:
+ if (new_meta_bmap)
+ ext2fs_free_block_bitmap(new_meta_bmap);
if (meta_bmap)
ext2fs_free_block_bitmap(meta_bmap);
-
+
return retval;
}
rfs->new_blk = rfs->new_fs->super->s_first_data_block;
#if 0
/* HACK for testing */
- if (rfs->new_fs->super->s_blocks_count >
- rfs->old_fs->super->s_blocks_count)
- rfs->new_blk = rfs->old_fs->super->s_blocks_count;
+ if (ext2fs_blocks_count(rfs->new_fs->super) >
+ ext2fs_blocks_count(rfs->old_fs->super))
+ rfs->new_blk = ext2fs_blocks_count(rfs->old_fs->super);
#endif
}
-static blk_t get_new_block(ext2_resize_t rfs)
+static blk64_t get_new_block(ext2_resize_t rfs)
{
ext2_filsys fs = rfs->new_fs;
-
+
while (1) {
- if (rfs->new_blk >= fs->super->s_blocks_count) {
+ if (rfs->new_blk >= ext2fs_blocks_count(fs->super)) {
if (rfs->alloc_state == DESPERATION)
return 0;
if (rfs->flags & RESIZE_DEBUG_BMOVE)
printf("Going into desperation mode "
"for block allocations\n");
-#endif
+#endif
rfs->alloc_state = DESPERATION;
rfs->new_blk = fs->super->s_first_data_block;
continue;
}
- if (ext2fs_test_block_bitmap(fs->block_map, rfs->new_blk) ||
- ext2fs_test_block_bitmap(rfs->reserve_blocks,
+ if (ext2fs_test_block_bitmap2(fs->block_map, rfs->new_blk) ||
+ ext2fs_test_block_bitmap2(rfs->reserve_blocks,
rfs->new_blk) ||
((rfs->alloc_state == AVOID_OLD) &&
- (rfs->new_blk < rfs->old_fs->super->s_blocks_count) &&
- ext2fs_test_block_bitmap(rfs->old_fs->block_map,
+ (rfs->new_blk < ext2fs_blocks_count(rfs->old_fs->super)) &&
+ ext2fs_test_block_bitmap2(rfs->old_fs->block_map,
rfs->new_blk))) {
rfs->new_blk++;
continue;
}
}
+static errcode_t resize2fs_get_alloc_block(ext2_filsys fs, blk64_t goal,
+ blk64_t *ret)
+{
+ ext2_resize_t rfs = (ext2_resize_t) fs->priv_data;
+ blk64_t blk;
+
+ blk = get_new_block(rfs);
+ if (!blk)
+ return ENOSPC;
+
+#ifdef RESIZE2FS_DEBUG
+ if (rfs->flags & 0xF)
+ printf("get_alloc_block allocating %llu\n", blk);
+#endif
+
+ ext2fs_mark_block_bitmap2(rfs->old_fs->block_map, blk);
+ ext2fs_mark_block_bitmap2(rfs->new_fs->block_map, blk);
+ *ret = (blk64_t) blk;
+ return 0;
+}
+
static errcode_t block_mover(ext2_resize_t rfs)
{
- blk_t blk, old_blk, new_blk;
+ blk64_t blk, old_blk, new_blk;
ext2_filsys fs = rfs->new_fs;
ext2_filsys old_fs = rfs->old_fs;
errcode_t retval;
- int size, c;
+ __u64 size;
+ int c;
int to_move, moved;
ext2_badblocks_list badblock_list = 0;
int bb_modified = 0;
-
+
+ fs->get_alloc_block = resize2fs_get_alloc_block;
+ old_fs->get_alloc_block = resize2fs_get_alloc_block;
+
retval = ext2fs_read_bb_inode(old_fs, &badblock_list);
if (retval)
return retval;
*/
to_move = moved = 0;
init_block_alloc(rfs);
- for (blk = old_fs->super->s_first_data_block;
- blk < old_fs->super->s_blocks_count; blk++) {
- if (!ext2fs_test_block_bitmap(old_fs->block_map, blk))
+ for (blk = B2C(old_fs->super->s_first_data_block);
+ blk < ext2fs_blocks_count(old_fs->super);
+ blk += EXT2FS_CLUSTER_RATIO(fs)) {
+ if (!ext2fs_test_block_bitmap2(old_fs->block_map, blk))
continue;
- if (!ext2fs_test_block_bitmap(rfs->move_blocks, blk))
+ if (!ext2fs_test_block_bitmap2(rfs->move_blocks, blk))
continue;
if (ext2fs_badblocks_list_test(badblock_list, blk)) {
ext2fs_badblocks_list_del(badblock_list, blk);
retval = ENOSPC;
goto errout;
}
- ext2fs_mark_block_bitmap(fs->block_map, new_blk);
- ext2fs_add_extent_entry(rfs->bmap, blk, new_blk);
+ ext2fs_block_alloc_stats2(fs, new_blk, +1);
+ ext2fs_add_extent_entry(rfs->bmap, B2C(blk), B2C(new_blk));
to_move++;
}
-
+
if (to_move == 0) {
if (rfs->bmap) {
ext2fs_free_extent_table(rfs->bmap);
if (retval) goto errout;
if (!size)
break;
+ old_blk = C2B(old_blk);
+ new_blk = C2B(new_blk);
+ size = C2B(size);
#ifdef RESIZE2FS_DEBUG
if (rfs->flags & RESIZE_DEBUG_BMOVE)
- printf("Moving %d blocks %u->%u\n",
+ printf("Moving %llu blocks %llu->%llu\n",
size, old_blk, new_blk);
#endif
do {
c = size;
if (c > fs->inode_blocks_per_group)
c = fs->inode_blocks_per_group;
- retval = io_channel_read_blk(fs->io, old_blk, c,
- rfs->itable_buf);
+ retval = io_channel_read_blk64(fs->io, old_blk, c,
+ rfs->itable_buf);
if (retval) goto errout;
- retval = io_channel_write_blk(fs->io, new_blk, c,
- rfs->itable_buf);
+ retval = io_channel_write_blk64(fs->io, new_blk, c,
+ rfs->itable_buf);
if (retval) goto errout;
size -= c;
new_blk += c;
*/
+/*
+ * The extent translation table is stored in clusters so we need to
+ * take special care when mapping a source block number to its
+ * destination block number.
+ */
+static __u64 extent_translate(ext2_filsys fs, ext2_extent extent, __u64 old_loc)
+{
+ __u64 new_block = C2B(ext2fs_extent_translate(extent, B2C(old_loc)));
+
+ if (new_block != 0)
+ new_block += old_loc & (EXT2FS_CLUSTER_RATIO(fs) - 1);
+ return new_block;
+}
+
struct process_block_struct {
ext2_resize_t rfs;
ext2_ino_t ino;
int changed;
};
-static int process_block(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block EXT2FS_ATTR((unused)),
+static int process_block(ext2_filsys fs, blk64_t *block_nr,
+ e2_blkcnt_t blockcnt,
+ blk64_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)), void *priv_data)
{
struct process_block_struct *pb;
errcode_t retval;
- blk_t block, new_block;
+ blk64_t block, new_block;
int ret = 0;
pb = (struct process_block_struct *) priv_data;
block = *block_nr;
if (pb->rfs->bmap) {
- new_block = ext2fs_extent_translate(pb->rfs->bmap, block);
+ new_block = extent_translate(fs, pb->rfs->bmap, block);
if (new_block) {
*block_nr = new_block;
ret |= BLOCK_CHANGED;
pb->changed = 1;
#ifdef RESIZE2FS_DEBUG
if (pb->rfs->flags & RESIZE_DEBUG_BMOVE)
- printf("ino=%u, blockcnt=%lld, %u->%u\n",
+ printf("ino=%u, blockcnt=%lld, %llu->%llu\n",
pb->ino, blockcnt, block, new_block);
#endif
block = new_block;
}
}
if (pb->is_dir) {
- retval = ext2fs_add_dir_block(fs->dblist, pb->ino,
- block, (int) blockcnt);
+ retval = ext2fs_add_dir_block2(fs->dblist, pb->ino,
+ block, (int) blockcnt);
if (retval) {
pb->error = retval;
ret |= BLOCK_ABORT;
/*
* Progress callback
*/
-static errcode_t progress_callback(ext2_filsys fs,
+static errcode_t progress_callback(ext2_filsys fs,
ext2_inode_scan scan EXT2FS_ATTR((unused)),
dgrp_t group, void * priv_data)
{
if (retval)
return retval;
}
-
+
return 0;
}
struct ext2_inode *inode = NULL;
ext2_inode_scan scan = NULL;
errcode_t retval;
- int group;
char *block_buf = 0;
ext2_ino_t start_to_move;
- blk_t orig_size, new_block;
+ blk64_t orig_size;
+ blk64_t new_block;
int inode_size;
-
+
if ((rfs->old_fs->group_desc_count <=
rfs->new_fs->group_desc_count) &&
!rfs->bmap)
* is larger. We need to do this to avoid catching an error
* by the block iterator routines
*/
- orig_size = rfs->old_fs->super->s_blocks_count;
- if (orig_size < rfs->new_fs->super->s_blocks_count)
- rfs->old_fs->super->s_blocks_count =
- rfs->new_fs->super->s_blocks_count;
+ orig_size = ext2fs_blocks_count(rfs->old_fs->super);
+ if (orig_size < ext2fs_blocks_count(rfs->new_fs->super))
+ ext2fs_blocks_count_set(rfs->old_fs->super,
+ ext2fs_blocks_count(rfs->new_fs->super));
retval = ext2fs_open_inode_scan(rfs->old_fs, 0, &scan);
if (retval) goto errout;
start_to_move = (rfs->new_fs->group_desc_count *
rfs->new_fs->super->s_inodes_per_group);
-
+
if (rfs->progress) {
retval = (rfs->progress)(rfs, E2_RSZ_INODE_SCAN_PASS,
0, rfs->old_fs->group_desc_count);
pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
pb.changed = 0;
- if (inode->i_file_acl && rfs->bmap) {
- new_block = ext2fs_extent_translate(rfs->bmap,
- inode->i_file_acl);
+ if (ext2fs_file_acl_block(rfs->old_fs, inode) && rfs->bmap) {
+ new_block = extent_translate(rfs->old_fs, rfs->bmap,
+ ext2fs_file_acl_block(rfs->old_fs, inode));
if (new_block) {
- inode->i_file_acl = new_block;
- retval = ext2fs_write_inode_full(rfs->old_fs,
+ ext2fs_file_acl_block_set(rfs->old_fs, inode,
+ new_block);
+ retval = ext2fs_write_inode_full(rfs->old_fs,
ino, inode, inode_size);
if (retval) goto errout;
}
}
-
- if (ext2fs_inode_has_valid_blocks(inode) &&
+
+ if (ext2fs_inode_has_valid_blocks2(rfs->old_fs, inode) &&
(rfs->bmap || pb.is_dir)) {
pb.ino = ino;
- retval = ext2fs_block_iterate2(rfs->old_fs,
+ retval = ext2fs_block_iterate3(rfs->old_fs,
ino, 0, block_buf,
process_block, &pb);
if (retval)
/*
* Find a new inode
*/
- while (1) {
- if (!ext2fs_test_inode_bitmap(rfs->new_fs->inode_map,
- new_inode))
- break;
- new_inode++;
- if (new_inode > rfs->new_fs->super->s_inodes_count) {
- retval = ENOSPC;
- goto errout;
- }
- }
- ext2fs_mark_inode_bitmap(rfs->new_fs->inode_map, new_inode);
+ retval = ext2fs_new_inode(rfs->new_fs, 0, 0, 0, &new_inode);
+ if (retval)
+ goto errout;
+
+ ext2fs_inode_alloc_stats2(rfs->new_fs, new_inode, +1,
+ pb.is_dir);
if (pb.changed) {
/* Get the new version of the inode */
retval = ext2fs_read_inode_full(rfs->old_fs, ino,
inode, inode_size);
if (retval) goto errout;
- group = (new_inode-1) / EXT2_INODES_PER_GROUP(rfs->new_fs->super);
- if (LINUX_S_ISDIR(inode->i_mode))
- rfs->new_fs->group_desc[group].bg_used_dirs_count++;
-
#ifdef RESIZE2FS_DEBUG
if (rfs->flags & RESIZE_DEBUG_INODEMAP)
printf("Inode moved %u->%u\n", ino, new_inode);
io_channel_flush(rfs->old_fs->io);
errout:
- rfs->old_fs->super->s_blocks_count = orig_size;
+ ext2fs_blocks_count_set(rfs->old_fs->super, orig_size);
if (rfs->bmap) {
ext2fs_free_extent_table(rfs->bmap);
rfs->bmap = 0;
ext2fs_close_inode_scan(scan);
if (block_buf)
ext2fs_free_mem(&block_buf);
- if (inode)
- free(inode);
+ free(inode);
return retval;
}
struct istruct {
ext2_resize_t rfs;
errcode_t err;
- unsigned long max_dirs;
- int num;
+ unsigned int max_dirs;
+ unsigned int num;
};
-static int check_and_change_inodes(ext2_ino_t dir,
+static int check_and_change_inodes(ext2_ino_t dir,
int entry EXT2FS_ATTR((unused)),
struct ext2_dir_entry *dirent, int offset,
int blocksize EXT2FS_ATTR((unused)),
- char *buf EXT2FS_ATTR((unused)),
+ char *buf EXT2FS_ATTR((unused)),
void *priv_data)
{
struct istruct *is = (struct istruct *) priv_data;
{
errcode_t retval;
struct istruct is;
-
+
if (!rfs->imap)
return 0;
-
+
/*
* Now, we iterate over all of the directories to update the
* inode references
*/
is.num = 0;
- is.max_dirs = ext2fs_dblist_count(rfs->old_fs->dblist);
+ is.max_dirs = ext2fs_dblist_count2(rfs->old_fs->dblist);
is.rfs = rfs;
is.err = 0;
if (retval)
goto errout;
}
-
+
retval = ext2fs_dblist_dir_iterate(rfs->old_fs->dblist,
DIRENT_FLAG_INCLUDE_EMPTY, 0,
check_and_change_inodes, &is);
goto errout;
}
+ if (rfs->progress && (is.num < is.max_dirs))
+ (rfs->progress)(rfs, E2_RSZ_INODE_REF_UPD_PASS,
+ is.max_dirs, is.max_dirs);
+
errout:
ext2fs_free_extent_table(rfs->imap);
rfs->imap = 0;
*/
static errcode_t move_itables(ext2_resize_t rfs)
{
- int n, num, size, diff;
+ int n, num, size;
+ long long diff;
dgrp_t i, max_groups;
ext2_filsys fs = rfs->new_fs;
char *cp;
- blk_t old_blk, new_blk, blk;
+ blk64_t old_blk, new_blk, blk, cluster_freed;
errcode_t retval;
int j, to_move, moved;
+ ext2fs_block_bitmap new_bmap = NULL;
max_groups = fs->group_desc_count;
if (max_groups > rfs->old_fs->group_desc_count)
return retval;
}
+ if (EXT2FS_CLUSTER_RATIO(fs) > 1) {
+ retval = ext2fs_allocate_block_bitmap(fs, _("new meta blocks"),
+ &new_bmap);
+ if (retval)
+ return retval;
+
+ retval = mark_table_blocks(fs, new_bmap);
+ if (retval)
+ goto errout;
+ }
+
/*
* Figure out how many inode tables we need to move
*/
to_move = moved = 0;
for (i=0; i < max_groups; i++)
- if (rfs->old_fs->group_desc[i].bg_inode_table !=
- fs->group_desc[i].bg_inode_table)
+ if (ext2fs_inode_table_loc(rfs->old_fs, i) !=
+ ext2fs_inode_table_loc(fs, i))
to_move++;
- if (to_move == 0)
- return 0;
+ if (to_move == 0) {
+ retval = 0;
+ goto errout;
+ }
if (rfs->progress) {
retval = rfs->progress(rfs, E2_RSZ_MOVE_ITABLE_PASS,
rfs->old_fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
for (i=0; i < max_groups; i++) {
- old_blk = rfs->old_fs->group_desc[i].bg_inode_table;
- new_blk = fs->group_desc[i].bg_inode_table;
+ old_blk = ext2fs_inode_table_loc(rfs->old_fs, i);
+ new_blk = ext2fs_inode_table_loc(fs, i);
diff = new_blk - old_blk;
-
+
#ifdef RESIZE2FS_DEBUG
- if (rfs->flags & RESIZE_DEBUG_ITABLEMOVE)
- printf("Itable move group %d block %u->%u (diff %d)\n",
+ if (rfs->flags & RESIZE_DEBUG_ITABLEMOVE)
+ printf("Itable move group %d block %llu->%llu (diff %lld)\n",
i, old_blk, new_blk, diff);
#endif
-
+
if (!diff)
continue;
+ if (diff < 0)
+ diff = 0;
- retval = io_channel_read_blk(fs->io, old_blk,
- fs->inode_blocks_per_group,
- rfs->itable_buf);
- if (retval)
+ retval = io_channel_read_blk64(fs->io, old_blk,
+ fs->inode_blocks_per_group,
+ rfs->itable_buf);
+ if (retval)
goto errout;
/*
* The end of the inode table segment often contains
break;
n = n >> EXT2_BLOCK_SIZE_BITS(fs->super);
#ifdef RESIZE2FS_DEBUG
- if (rfs->flags & RESIZE_DEBUG_ITABLEMOVE)
+ if (rfs->flags & RESIZE_DEBUG_ITABLEMOVE)
printf("%d blocks of zeros...\n", n);
#endif
num = fs->inode_blocks_per_group;
if (n > diff)
num -= n;
- retval = io_channel_write_blk(fs->io, new_blk,
- num, rfs->itable_buf);
+ retval = io_channel_write_blk64(fs->io, new_blk,
+ num, rfs->itable_buf);
if (retval) {
- io_channel_write_blk(fs->io, old_blk,
- num, rfs->itable_buf);
+ io_channel_write_blk64(fs->io, old_blk,
+ num, rfs->itable_buf);
goto errout;
}
if (n > diff) {
- retval = io_channel_write_blk(fs->io,
+ retval = io_channel_write_blk64(fs->io,
old_blk + fs->inode_blocks_per_group,
diff, (rfs->itable_buf +
(fs->inode_blocks_per_group - diff) *
goto errout;
}
- for (blk = rfs->old_fs->group_desc[i].bg_inode_table, j=0;
- j < fs->inode_blocks_per_group ; j++, blk++)
- ext2fs_unmark_block_bitmap(fs->block_map, blk);
+ for (blk = ext2fs_inode_table_loc(rfs->old_fs, i), j=0;
+ j < fs->inode_blocks_per_group;) {
+ if (new_bmap == NULL ||
+ !ext2fs_test_block_bitmap2(new_bmap, blk)) {
+ ext2fs_block_alloc_stats2(fs, blk, -1);
+ cluster_freed = EXT2FS_CLUSTER_RATIO(fs) -
+ (blk & EXT2FS_CLUSTER_MASK(fs));
+ blk += cluster_freed;
+ j += cluster_freed;
+ continue;
+ }
+ blk++;
+ j++;
+ }
- rfs->old_fs->group_desc[i].bg_inode_table = new_blk;
+ ext2fs_inode_table_loc_set(rfs->old_fs, i, new_blk);
+ ext2fs_group_desc_csum_set(rfs->old_fs, i);
ext2fs_mark_super_dirty(rfs->old_fs);
ext2fs_flush(rfs->old_fs);
mark_table_blocks(fs, fs->block_map);
ext2fs_flush(fs);
#ifdef RESIZE2FS_DEBUG
- if (rfs->flags & RESIZE_DEBUG_ITABLEMOVE)
+ if (rfs->flags & RESIZE_DEBUG_ITABLEMOVE)
printf("Inode table move finished.\n");
#endif
- return 0;
-
+ retval = 0;
+
errout:
+ if (new_bmap)
+ ext2fs_free_block_bitmap(new_bmap);
return retval;
}
/*
- * Fix the resize inode
+ * This function is used when expanding a file system. It frees the
+ * superblock and block group descriptor blocks from the block group
+ * which is no longer the last block group.
+ */
+static errcode_t clear_sparse_super2_last_group(ext2_resize_t rfs)
+{
+ ext2_filsys fs = rfs->new_fs;
+ ext2_filsys old_fs = rfs->old_fs;
+ errcode_t retval;
+ dgrp_t old_last_bg = rfs->old_fs->group_desc_count - 1;
+ dgrp_t last_bg = fs->group_desc_count - 1;
+ blk64_t sb, old_desc;
+ blk_t num;
+
+ if (!(fs->super->s_feature_compat & EXT4_FEATURE_COMPAT_SPARSE_SUPER2))
+ return 0;
+
+ if (last_bg <= old_last_bg)
+ return 0;
+
+ if (fs->super->s_backup_bgs[0] == old_fs->super->s_backup_bgs[0] &&
+ fs->super->s_backup_bgs[1] == old_fs->super->s_backup_bgs[1])
+ return 0;
+
+ if (old_fs->super->s_backup_bgs[0] != old_last_bg &&
+ old_fs->super->s_backup_bgs[1] != old_last_bg)
+ return 0;
+
+ if (fs->super->s_backup_bgs[0] == old_last_bg ||
+ fs->super->s_backup_bgs[1] == old_last_bg)
+ return 0;
+
+ retval = ext2fs_super_and_bgd_loc2(rfs->old_fs, old_last_bg,
+ &sb, &old_desc, NULL, &num);
+ if (retval)
+ return retval;
+
+ if (sb)
+ ext2fs_unmark_block_bitmap2(fs->block_map, sb);
+ if (old_desc)
+ ext2fs_unmark_block_bitmap_range2(fs->block_map, old_desc, num);
+ return 0;
+}
+
+/*
+ * This function is used when shrinking a file system. We need to
+ * utilize blocks from what will be the new last block group for the
+ * backup superblock and block group descriptor blocks.
+ * Unfortunately, those blocks may be used by other files or fs
+ * metadata blocks. We need to mark them as being in use.
+ */
+static errcode_t reserve_sparse_super2_last_group(ext2_resize_t rfs,
+ ext2fs_block_bitmap meta_bmap)
+{
+ ext2_filsys fs = rfs->new_fs;
+ ext2_filsys old_fs = rfs->old_fs;
+ errcode_t retval;
+ dgrp_t old_last_bg = rfs->old_fs->group_desc_count - 1;
+ dgrp_t last_bg = fs->group_desc_count - 1;
+ dgrp_t g;
+ blk64_t blk, sb, old_desc;
+ blk_t i, num;
+ int realloc = 0;
+
+ if (!(fs->super->s_feature_compat & EXT4_FEATURE_COMPAT_SPARSE_SUPER2))
+ return 0;
+
+ if (last_bg >= old_last_bg)
+ return 0;
+
+ if (fs->super->s_backup_bgs[0] == old_fs->super->s_backup_bgs[0] &&
+ fs->super->s_backup_bgs[1] == old_fs->super->s_backup_bgs[1])
+ return 0;
+
+ if (fs->super->s_backup_bgs[0] != last_bg &&
+ fs->super->s_backup_bgs[1] != last_bg)
+ return 0;
+
+ if (old_fs->super->s_backup_bgs[0] == last_bg ||
+ old_fs->super->s_backup_bgs[1] == last_bg)
+ return 0;
+
+ retval = ext2fs_super_and_bgd_loc2(rfs->new_fs, last_bg,
+ &sb, &old_desc, NULL, &num);
+ if (retval)
+ return retval;
+
+ if (!sb) {
+ fputs(_("Should never happen! No sb in last super_sparse bg?\n"),
+ stderr);
+ exit(1);
+ }
+ if (old_desc && old_desc != sb+1) {
+ fputs(_("Should never happen! Unexpected old_desc in "
+ "super_sparse bg?\n"),
+ stderr);
+ exit(1);
+ }
+ num = (old_desc) ? num : 1;
+
+ /* Reserve the backup blocks */
+ ext2fs_mark_block_bitmap_range2(fs->block_map, sb, num);
+
+ for (g = 0; g < fs->group_desc_count; g++) {
+ blk64_t mb;
+
+ mb = ext2fs_block_bitmap_loc(fs, g);
+ if ((mb >= sb) && (mb < sb + num)) {
+ ext2fs_block_bitmap_loc_set(fs, g, 0);
+ realloc = 1;
+ }
+ mb = ext2fs_inode_bitmap_loc(fs, g);
+ if ((mb >= sb) && (mb < sb + num)) {
+ ext2fs_inode_bitmap_loc_set(fs, g, 0);
+ realloc = 1;
+ }
+ mb = ext2fs_inode_table_loc(fs, g);
+ if ((mb < sb + num) &&
+ (sb < mb + fs->inode_blocks_per_group)) {
+ ext2fs_inode_table_loc_set(fs, g, 0);
+ realloc = 1;
+ }
+ if (realloc) {
+ retval = ext2fs_allocate_group_table(fs, g, 0);
+ if (retval)
+ return retval;
+ }
+ }
+
+ for (blk = sb, i = 0; i < num; blk++, i++) {
+ if (ext2fs_test_block_bitmap2(old_fs->block_map, blk) &&
+ !ext2fs_test_block_bitmap2(meta_bmap, blk)) {
+ ext2fs_mark_block_bitmap2(rfs->move_blocks, blk);
+ rfs->needed_blocks++;
+ }
+ ext2fs_mark_block_bitmap2(rfs->reserve_blocks, blk);
+ }
+ return 0;
+}
+
+/*
+ * Fix the resize inode
*/
static errcode_t fix_resize_inode(ext2_filsys fs)
{
struct ext2_inode inode;
errcode_t retval;
- char * block_buf;
+ char *block_buf = NULL;
- if (!(fs->super->s_feature_compat &
+ if (!(fs->super->s_feature_compat &
EXT2_FEATURE_COMPAT_RESIZE_INODE))
return 0;
retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode);
if (retval) goto errout;
- inode.i_blocks = fs->blocksize/512;
+ ext2fs_iblk_set(fs, &inode, 1);
retval = ext2fs_write_inode(fs, EXT2_RESIZE_INO, &inode);
if (retval) goto errout;
if (!inode.i_block[EXT2_DIND_BLOCK]) {
- /*
+ /*
* Avoid zeroing out block #0; that's rude. This
* should never happen anyway since the filesystem
* should be fsck'ed and we assume it is consistent.
*/
- fprintf(stderr,
+ fprintf(stderr, "%s",
_("Should never happen: resize inode corrupt!\n"));
exit(1);
}
memset(block_buf, 0, fs->blocksize);
- retval = io_channel_write_blk(fs->io, inode.i_block[EXT2_DIND_BLOCK],
- 1, block_buf);
+ retval = io_channel_write_blk64(fs->io, inode.i_block[EXT2_DIND_BLOCK],
+ 1, block_buf);
if (retval) goto errout;
-
+
retval = ext2fs_create_resize_inode(fs);
if (retval)
goto errout;
*/
static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
{
- blk_t blk;
+ blk64_t blk;
ext2_ino_t ino;
unsigned int group = 0;
unsigned int count = 0;
- int total_free = 0;
+ blk64_t total_blocks_free = 0;
+ int total_inodes_free = 0;
int group_free = 0;
+ int uninit = 0;
+ blk64_t super_blk, old_desc_blk, new_desc_blk;
+ int old_desc_blocks;
/*
* First calculate the block statistics
*/
- for (blk = fs->super->s_first_data_block;
- blk < fs->super->s_blocks_count; blk++) {
- if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
+ uninit = ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT);
+ ext2fs_super_and_bgd_loc2(fs, group, &super_blk, &old_desc_blk,
+ &new_desc_blk, 0);
+ if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
+ old_desc_blocks = fs->super->s_first_meta_bg;
+ else
+ old_desc_blocks = fs->desc_blocks +
+ fs->super->s_reserved_gdt_blocks;
+ for (blk = B2C(fs->super->s_first_data_block);
+ blk < ext2fs_blocks_count(fs->super);
+ blk += EXT2FS_CLUSTER_RATIO(fs)) {
+ if ((uninit &&
+ !(EQ_CLSTR(blk, super_blk) ||
+ ((old_desc_blk && old_desc_blocks &&
+ GE_CLSTR(blk, old_desc_blk) &&
+ LT_CLSTR(blk, old_desc_blk + old_desc_blocks))) ||
+ ((new_desc_blk && EQ_CLSTR(blk, new_desc_blk))) ||
+ EQ_CLSTR(blk, ext2fs_block_bitmap_loc(fs, group)) ||
+ EQ_CLSTR(blk, ext2fs_inode_bitmap_loc(fs, group)) ||
+ ((GE_CLSTR(blk, ext2fs_inode_table_loc(fs, group)) &&
+ LT_CLSTR(blk, ext2fs_inode_table_loc(fs, group)
+ + fs->inode_blocks_per_group))))) ||
+ (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk))) {
group_free++;
- total_free++;
+ total_blocks_free++;
}
count++;
- if ((count == fs->super->s_blocks_per_group) ||
- (blk == fs->super->s_blocks_count-1)) {
- fs->group_desc[group++].bg_free_blocks_count =
- group_free;
+ if ((count == fs->super->s_clusters_per_group) ||
+ EQ_CLSTR(blk, ext2fs_blocks_count(fs->super)-1)) {
+ ext2fs_bg_free_blocks_count_set(fs, group, group_free);
+ ext2fs_group_desc_csum_set(fs, group);
+ group++;
+ if (group >= fs->group_desc_count)
+ break;
count = 0;
group_free = 0;
+ uninit = ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT);
+ ext2fs_super_and_bgd_loc2(fs, group, &super_blk,
+ &old_desc_blk,
+ &new_desc_blk, 0);
+ if (fs->super->s_feature_incompat &
+ EXT2_FEATURE_INCOMPAT_META_BG)
+ old_desc_blocks = fs->super->s_first_meta_bg;
+ else
+ old_desc_blocks = fs->desc_blocks +
+ fs->super->s_reserved_gdt_blocks;
}
}
- fs->super->s_free_blocks_count = total_free;
-
+ total_blocks_free = C2B(total_blocks_free);
+ ext2fs_free_blocks_count_set(fs->super, total_blocks_free);
+
/*
* Next, calculate the inode statistics
*/
group_free = 0;
- total_free = 0;
count = 0;
group = 0;
/* Protect loop from wrap-around if s_inodes_count maxed */
+ uninit = ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT);
for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
- if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) {
+ if (uninit ||
+ !ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
group_free++;
- total_free++;
+ total_inodes_free++;
}
count++;
if ((count == fs->super->s_inodes_per_group) ||
(ino == fs->super->s_inodes_count)) {
- fs->group_desc[group++].bg_free_inodes_count =
- group_free;
+ ext2fs_bg_free_inodes_count_set(fs, group, group_free);
+ ext2fs_group_desc_csum_set(fs, group);
+ group++;
+ if (group >= fs->group_desc_count)
+ break;
count = 0;
group_free = 0;
+ uninit = ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT);
}
}
- fs->super->s_free_inodes_count = total_free;
+ fs->super->s_free_inodes_count = total_inodes_free;
+ ext2fs_mark_super_dirty(fs);
+ return 0;
+}
+
+/*
+ * Journal may have been relocated; update the backup journal blocks
+ * in the superblock.
+ */
+static errcode_t fix_sb_journal_backup(ext2_filsys fs)
+{
+ errcode_t retval;
+ struct ext2_inode inode;
+
+ if (!(fs->super->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
+ return 0;
+
+ /* External journal? Nothing to do. */
+ if (fs->super->s_journal_dev && !fs->super->s_journal_inum)
+ return 0;
+
+ retval = ext2fs_read_inode(fs, fs->super->s_journal_inum, &inode);
+ if (retval)
+ return retval;
+ memcpy(fs->super->s_jnl_blocks, inode.i_block, EXT2_N_BLOCKS*4);
+ fs->super->s_jnl_blocks[15] = inode.i_size_high;
+ fs->super->s_jnl_blocks[16] = inode.i_size;
+ fs->super->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS;
ext2fs_mark_super_dirty(fs);
return 0;
}
+
+static int calc_group_overhead(ext2_filsys fs, blk64_t grp,
+ int old_desc_blocks)
+{
+ blk64_t super_blk, old_desc_blk, new_desc_blk;
+ int overhead;
+
+ /* inode table blocks plus allocation bitmaps */
+ overhead = fs->inode_blocks_per_group + 2;
+
+ ext2fs_super_and_bgd_loc2(fs, grp, &super_blk,
+ &old_desc_blk, &new_desc_blk, 0);
+ if ((grp == 0) || super_blk)
+ overhead++;
+ if (old_desc_blk)
+ overhead += old_desc_blocks;
+ else if (new_desc_blk)
+ overhead++;
+ return overhead;
+}
+
+
+/*
+ * calcluate the minimum number of blocks the given fs can be resized to
+ */
+blk64_t calculate_minimum_resize_size(ext2_filsys fs, int flags)
+{
+ ext2_ino_t inode_count;
+ dgrp_t groups, flex_groups;
+ blk64_t blks_needed, data_blocks;
+ blk64_t grp, data_needed, last_start;
+ blk64_t overhead = 0;
+ int old_desc_blocks;
+ int flexbg_size = 1 << fs->super->s_log_groups_per_flex;
+
+ /*
+ * first figure out how many group descriptors we need to
+ * handle the number of inodes we have
+ */
+ inode_count = fs->super->s_inodes_count -
+ fs->super->s_free_inodes_count;
+ blks_needed = ext2fs_div_ceil(inode_count,
+ fs->super->s_inodes_per_group) *
+ (blk64_t) EXT2_BLOCKS_PER_GROUP(fs->super);
+ groups = ext2fs_div64_ceil(blks_needed,
+ EXT2_BLOCKS_PER_GROUP(fs->super));
+#ifdef RESIZE2FS_DEBUG
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("fs has %d inodes, %d groups required.\n",
+ inode_count, groups);
+#endif
+
+ /*
+ * number of old-style block group descriptor blocks
+ */
+ if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
+ old_desc_blocks = fs->super->s_first_meta_bg;
+ else
+ old_desc_blocks = fs->desc_blocks +
+ fs->super->s_reserved_gdt_blocks;
+
+ /* calculate how many blocks are needed for data */
+ data_needed = ext2fs_blocks_count(fs->super) -
+ ext2fs_free_blocks_count(fs->super);
+
+ for (grp = 0; grp < fs->group_desc_count; grp++)
+ data_needed -= calc_group_overhead(fs, grp, old_desc_blocks);
+#ifdef RESIZE2FS_DEBUG
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("fs requires %llu data blocks.\n", data_needed);
+#endif
+
+ /*
+ * For ext4 we need to allow for up to a flex_bg worth of
+ * inode tables of slack space so the resize operation can be
+ * guaranteed to finish.
+ */
+ flex_groups = groups;
+ if (fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_FLEX_BG) {
+ dgrp_t remainder = groups & (flexbg_size - 1);
+
+ flex_groups += flexbg_size - remainder;
+ if (flex_groups > fs->group_desc_count)
+ flex_groups = fs->group_desc_count;
+ }
+
+ /*
+ * figure out how many data blocks we have given the number of groups
+ * we need for our inodes
+ */
+ data_blocks = EXT2_GROUPS_TO_BLOCKS(fs->super, groups);
+ last_start = 0;
+ for (grp = 0; grp < flex_groups; grp++) {
+ overhead = calc_group_overhead(fs, grp, old_desc_blocks);
+
+ /*
+ * we want to keep track of how much data we can store in
+ * the groups leading up to the last group so we can determine
+ * how big the last group needs to be
+ */
+ if (grp < (groups - 1))
+ last_start += EXT2_BLOCKS_PER_GROUP(fs->super) -
+ overhead;
+
+ if (data_blocks > overhead)
+ data_blocks -= overhead;
+ else
+ data_blocks = 0;
+ }
+#ifdef RESIZE2FS_DEBUG
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("With %d group(s), we have %llu blocks available.\n",
+ groups, data_blocks);
+#endif
+
+ /*
+ * if we need more group descriptors in order to accomodate our data
+ * then we need to add them here
+ */
+ blks_needed = data_needed;
+ while (blks_needed > data_blocks) {
+ blk64_t remainder = blks_needed - data_blocks;
+ dgrp_t extra_grps;
+
+ /* figure out how many more groups we need for the data */
+ extra_grps = ext2fs_div64_ceil(remainder,
+ EXT2_BLOCKS_PER_GROUP(fs->super));
+
+ data_blocks += EXT2_GROUPS_TO_BLOCKS(fs->super, extra_grps);
+
+ /* ok we have to account for the last group */
+ overhead = calc_group_overhead(fs, groups-1, old_desc_blocks);
+ last_start += EXT2_BLOCKS_PER_GROUP(fs->super) - overhead;
+
+ grp = flex_groups;
+ groups += extra_grps;
+ if (!(fs->super->s_feature_incompat &
+ EXT4_FEATURE_INCOMPAT_FLEX_BG))
+ flex_groups = groups;
+ else if (groups > flex_groups) {
+ dgrp_t r = groups & (flexbg_size - 1);
+
+ flex_groups = groups + flexbg_size - r;
+ if (flex_groups > fs->group_desc_count)
+ flex_groups = fs->group_desc_count;
+ }
+
+ for (; grp < flex_groups; grp++) {
+ overhead = calc_group_overhead(fs, grp,
+ old_desc_blocks);
+
+ /*
+ * again, we need to see how much data we cram into
+ * all of the groups leading up to the last group
+ */
+ if (grp < groups - 1)
+ last_start += EXT2_BLOCKS_PER_GROUP(fs->super)
+ - overhead;
+
+ data_blocks -= overhead;
+ }
+
+#ifdef RESIZE2FS_DEBUG
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("Added %d extra group(s), "
+ "blks_needed %llu, data_blocks %llu, "
+ "last_start %llu\n", extra_grps, blks_needed,
+ data_blocks, last_start);
+#endif
+ }
+
+ /* now for the fun voodoo */
+ grp = groups - 1;
+ if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_FLEX_BG) &&
+ (grp & ~(flexbg_size - 1)) == 0)
+ grp = grp & ~(flexbg_size - 1);
+ overhead = 0;
+ for (; grp < flex_groups; grp++)
+ overhead += calc_group_overhead(fs, grp, old_desc_blocks);
+
+#ifdef RESIZE2FS_DEBUG
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("Last group's overhead is %llu\n", overhead);
+#endif
+
+ /*
+ * if this is the case then the last group is going to have data in it
+ * so we need to adjust the size of the last group accordingly
+ */
+ if (last_start < blks_needed) {
+ blk64_t remainder = blks_needed - last_start;
+
+#ifdef RESIZE2FS_DEBUG
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("Need %llu data blocks in last group\n",
+ remainder);
+#endif
+ /*
+ * 50 is a magic number that mkfs/resize uses to see if its
+ * even worth making/resizing the fs. basically you need to
+ * have at least 50 blocks in addition to the blocks needed
+ * for the metadata in the last group
+ */
+ if (remainder > 50)
+ overhead += remainder;
+ else
+ overhead += 50;
+ } else
+ overhead += 50;
+
+ overhead += fs->super->s_first_data_block;
+#ifdef RESIZE2FS_DEBUG
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("Final size of last group is %lld\n", overhead);
+#endif
+
+ /* Add extra slack for bigalloc file systems */
+ if (EXT2FS_CLUSTER_RATIO(fs) > 1)
+ overhead += EXT2FS_CLUSTER_RATIO(fs) * 2;
+
+ /*
+ * since our last group doesn't have to be BLOCKS_PER_GROUP
+ * large, we only do groups-1, and then add the number of
+ * blocks needed to handle the group descriptor metadata+data
+ * that we need
+ */
+ blks_needed = EXT2_GROUPS_TO_BLOCKS(fs->super, groups - 1);
+ blks_needed += overhead;
+
+ /*
+ * Make sure blks_needed covers the end of the inode table in
+ * the last block group.
+ */
+ overhead = ext2fs_inode_table_loc(fs, groups-1) +
+ fs->inode_blocks_per_group;
+ if (blks_needed < overhead)
+ blks_needed = overhead;
+
+#ifdef RESIZE2FS_DEBUG
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("Estimated blocks needed: %llu\n", blks_needed);
+#endif
+
+ /*
+ * If at this point we've already added up more "needed" than
+ * the current size, just return current size as minimum.
+ */
+ if (blks_needed >= ext2fs_blocks_count(fs->super))
+ return ext2fs_blocks_count(fs->super);
+ /*
+ * We need to reserve a few extra blocks if extents are
+ * enabled, in case we need to grow the extent tree. The more
+ * we shrink the file system, the more space we need.
+ *
+ * The absolute worst case is every single data block is in
+ * the part of the file system that needs to be evacuated,
+ * with each data block needs to be in its own extent, and
+ * with each inode needing at least one extent block.
+ */
+ if (fs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS) {
+ blk64_t safe_margin = (ext2fs_blocks_count(fs->super) -
+ blks_needed)/500;
+ unsigned int exts_per_blk = (fs->blocksize /
+ sizeof(struct ext3_extent)) - 1;
+ blk64_t worst_case = ((data_needed + exts_per_blk - 1) /
+ exts_per_blk);
+
+ if (worst_case < inode_count)
+ worst_case = inode_count;
+
+ if (safe_margin > worst_case)
+ safe_margin = worst_case;
+
+#ifdef RESIZE2FS_DEBUG
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("Extents safety margin: %llu\n", safe_margin);
+#endif
+ blks_needed += safe_margin;
+ }
+
+ return blks_needed;
+}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff