int force_bmap; /* force use of FIBMAP instead of FIEMAP */
int force_extent; /* print output in extent format always */
int use_extent_cache; /* Use extent cache */
+int device_offset; /* extents report device-relative offsets */
int logical_width = 8;
int physical_width = 10;
const char *ext_fmt = "%4d: %*llu..%*llu: %*llu..%*llu: %6llu: %s\n";
const char *hex_fmt = "%4d: %*llx..%*llx: %*llx..%*llx: %6llx: %s\n";
-#define FILEFRAG_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR)
+#define FILEFRAG_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR |\
+ FIEMAP_FLAG_DEVICE_ORDER)
#define FIBMAP _IO(0x00, 1) /* bmap access */
#define FIGETBSZ _IO(0x00, 2) /* get the block size used for bmap */
{
printf(" ext: %*s %*s length: %*s flags:\n",
logical_width * 2 + 3,
- "logical_offset:",
+ device_offset ? "device_logical:" : "logical_offset:",
physical_width * 2 + 3, "physical_offset:",
- physical_width + 1,
- "expected:");
+ device_offset ? 5 : physical_width + 1,
+ device_offset ? " dev:" : "expected:");
}
static void print_flag(__u32 *flags, __u32 mask, char *buf, const char *name)
print_flag(&fe_flags, FIEMAP_EXTENT_SHARED, flags, "shared,");
print_flag(&fe_flags, EXT4_FIEMAP_EXTENT_HOLE, flags, "hole,");
+ print_flag(&fe_flags, FIEMAP_EXTENT_NET, flags, "net,");
+
if (!print_unknown)
goto out;
physical_blk = fm_extent->fe_physical >> blk_shift;
}
- if (expected &&
+ if (device_offset)
+ sprintf(flags, "%04x: ", fm_extent->fe_device & 0xffff);
+ else if (expected &&
!(fm_extent->fe_flags & FIEMAP_EXTENT_UNKNOWN) &&
!(fm_extent->fe_flags & EXT4_FIEMAP_EXTENT_HOLE))
sprintf(flags, ext_fmt == hex_fmt ? "%*llx: " : "%*llu: ",
physical_width, expected >> blk_shift);
- else
- sprintf(flags, "%.*s ", physical_width, " ");
print_flags(fm_extent->fe_flags, flags, sizeof(flags), 1);
unsigned long cmd = FS_IOC_FIEMAP;
int fiemap_header_printed = 0;
int tot_extents = 0, n = 0;
+ int previous_device = -1;
int last = 0;
int rc;
if (use_extent_cache)
cmd = EXT4_IOC_GET_ES_CACHE;
+ if (device_offset) {
+ flags |= FIEMAP_FLAG_DEVICE_ORDER;
+ memset(fm_ext, 0, sizeof(struct fiemap_extent));
+ }
+
+retry_wo_device_order:
do {
fiemap->fm_length = ~0ULL;
fiemap->fm_flags = flags;
"flags %x\n",
fiemap->fm_flags);
fiemap_incompat_printed = 1;
+ } else if (rc == EBADR && (fiemap->fm_flags &
+ FIEMAP_FLAG_DEVICE_ORDER)) {
+ flags &= ~FIEMAP_FLAG_DEVICE_ORDER;
+ goto retry_wo_device_order;
}
return rc;
}
fm_last.fe_length;
expected = fm_last.fe_physical +
fm_ext[i].fe_logical - fm_last.fe_logical;
- if (fm_ext[i].fe_logical != 0 &&
- fm_ext[i].fe_physical != expected &&
- fm_ext[i].fe_physical != expected_dense) {
+ if ((fm_ext[i].fe_logical != 0 &&
+ fm_ext[i].fe_physical != expected &&
+ fm_ext[i].fe_physical != expected_dense) ||
+ ((fm_ext[i].fe_device & 0xffff) != previous_device)) {
tot_extents++;
} else {
expected = 0;
last = 1;
fm_last = fm_ext[i];
n++;
+ previous_device = fm_ext[i].fe_device & 0xffff;
}
- fiemap->fm_start = (fm_ext[i - 1].fe_logical +
- fm_ext[i - 1].fe_length);
+ /* For DEVICE_ORDER mappings, if EXTENT_LAST not yet found then
+ * fm_start needs to be the same as it was for earlier ioctl.
+ * The first extent is used to pass the end offset and device
+ * of the last FIEMAP call. Otherwise, we ask for extents
+ * starting from where the last mapping ended. */
+ if (flags & FIEMAP_FLAG_DEVICE_ORDER) {
+ fm_ext[0].fe_logical = fm_ext[i - 1].fe_logical +
+ fm_ext[i - 1].fe_length;
+ fm_ext[0].fe_device = fm_ext[i - 1].fe_device;
+ fiemap->fm_start = 0;
+ } else {
+ fiemap->fm_start = fm_ext[i - 1].fe_logical +
+ fm_ext[i - 1].fe_length;
+ }
} while (last == 0);
*num_extents = tot_extents;
memset(&fm_ext, 0, sizeof(fm_ext));
memset(&fm_last, 0, sizeof(fm_last));
if (force_extent) {
+ fm_ext.fe_device = st->st_dev;
fm_ext.fe_flags = FIEMAP_EXTENT_MERGED;
}
is_ext2 = 1;
}
+ /* Check if filesystem is Lustre. Always print in extent format
+ * with 1kB blocks, using the device-relative logical offsets. */
+ if (fsinfo.f_type == LUSTRE_SUPER_MAGIC) {
+ device_offset = 1;
+ blocksize = blocksize ?: 1024;
+ }
+
if (is_ext2) {
long cylgroups = div_ceil(fsinfo.f_blocks, blksize * 8);
int rc = 0, c;
int version = 0;
- while ((c = getopt(argc, argv, "Bb::eEkPsvVxX")) != EOF) {
+ while ((c = getopt(argc, argv, "Bb::eEkPlsvxXV")) != EOF) {
switch (c) {
case 'B':
force_bmap++;
+ force_extent = 0;
break;
case 'b':
if (optarg) {
case 'P':
precache_file++;
break;
+ case 'l':
+ device_offset++;
+ break;
case 's':
sync_file++;
break;