From: Rahul Deshmukh <Rahul.Deshmukh@sun.com>
Date: Wed, 16 Jun 2010 06:51:43 +0000 (+0530)
Subject: b=17569 add check in ext3-based ldiskfs for >8TB filesystems
X-Git-Tag: v2_0_0-rc1~37
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=46b955555dc1c8b3f8bb477526e4c0c8cef159ce

b=17569 add check in ext3-based ldiskfs for >8TB filesystems

i=johann

This is combined patch which includes both patches on bug 17569 which needs to
be landed.
1. remove force option for rhel5/ext4
2. add 16TB limit mount option for rhel5/ext4
---

diff --git a/ldiskfs/kernel_patches/patches/ext4-extents-mount-option-rhel5.patch b/ldiskfs/kernel_patches/patches/ext4-extents-mount-option-rhel5.patch
index 96e964b..cb0bcf0 100644
--- a/ldiskfs/kernel_patches/patches/ext4-extents-mount-option-rhel5.patch
+++ b/ldiskfs/kernel_patches/patches/ext4-extents-mount-option-rhel5.patch
@@ -93,7 +93,7 @@ diff -up linux-2.6.18-164/fs/ext4/super.c linux-2.6.18-164/fs/ext4/super.c
 @@ -1334,6 +1336,7 @@ enum {
  	Opt_inode_readahead_blks, Opt_journal_ioprio,
  	Opt_iopen, Opt_noiopen, Opt_iopen_nopriv, Opt_bigendian_extents,
- 	Opt_force_over_8tb,
+ 	Opt_force_over_16tb,
 +	Opt_extents, Opt_noextents,
  };
  
@@ -101,7 +101,7 @@ diff -up linux-2.6.18-164/fs/ext4/super.c linux-2.6.18-164/fs/ext4/super.c
 @@ -1401,6 +1404,8 @@ static match_table_t tokens = {
  	{Opt_noauto_da_alloc, "noauto_da_alloc"},
  	{Opt_bigendian_extents, "bigendian_extents"},
- 	{Opt_force_over_8tb, "force_over_8tb"},
+ 	{Opt_force_over_16tb, "force_over_16tb"},
 +	{Opt_extents, "extents"},
 +	{Opt_noextents, "noextents"},
  	{Opt_err, NULL},
@@ -116,8 +116,8 @@ diff -up linux-2.6.18-164/fs/ext4/super.c linux-2.6.18-164/fs/ext4/super.c
  	if (!options)
  		return 1;
 @@ -1829,6 +1835,33 @@ set_qf_format:
- 		case Opt_force_over_8tb:
- 			force_over_8tb = 1;
+ 		case Opt_force_over_16tb:
+ 			force_over_16tb = 1;
  			break;
 +		case Opt_extents:
 +			if (!EXT4_HAS_INCOMPAT_FEATURE(sb,
diff --git a/ldiskfs/kernel_patches/patches/ext4-force_over_16tb-rhel5.patch b/ldiskfs/kernel_patches/patches/ext4-force_over_16tb-rhel5.patch
new file mode 100644
index 0000000..4ea9b247
--- /dev/null
+++ b/ldiskfs/kernel_patches/patches/ext4-force_over_16tb-rhel5.patch
@@ -0,0 +1,56 @@
+Index: linux-2.6.18-164.6.1/fs/ext4/super.c
+===================================================================
+--- linux-2.6.18-164.6.1.orig/fs/ext4/super.c
++++ linux-2.6.18-164.6.1/fs/ext4/super.c
+@@ -51,6 +51,8 @@
+ 
+ struct proc_dir_entry *ext4_proc_root;
+ 
++static int force_over_16tb;
++
+ static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
+ 			     unsigned long journal_devnum);
+ static int ext4_commit_super(struct super_block *sb,
+@@ -1343,6 +1345,7 @@ enum {
+ 	Opt_stripe, Opt_delalloc, Opt_nodelalloc,
+ 	Opt_inode_readahead_blks, Opt_journal_ioprio,
+ 	Opt_iopen, Opt_noiopen, Opt_iopen_nopriv, Opt_bigendian_extents,
++	Opt_force_over_16tb,
+ };
+ 
+ static match_table_t tokens = {
+@@ -1410,6 +1413,7 @@ static match_table_t tokens = {
+ 	{Opt_auto_da_alloc, "auto_da_alloc"},
+ 	{Opt_noauto_da_alloc, "noauto_da_alloc"},
+ 	{Opt_bigendian_extents, "bigendian_extents"},
++	{Opt_force_over_16tb, "force_over_16tb"},
+ 	{Opt_err, NULL},
+ };
+ 
+@@ -1837,6 +1841,9 @@ set_qf_format:
+ 			break;
+ 		case Opt_mballoc:
+ 			break;
++		case Opt_force_over_16tb:
++			force_over_16tb = 1;
++			break;
+ 		default:
+ 			printk(KERN_ERR
+ 			       "EXT4-fs: Unrecognized mount option \"%s\" "
+@@ -2692,6 +2699,16 @@ static int ext4_fill_super(struct super_
+ 		goto failed_mount;
+ 	}
+ 
++	if (ext4_blocks_count(es) >= (1ULL << 32)) {
++		if (force_over_16tb == 0) {
++			printk(KERN_ERR "EXT4-fs does not support filesystems "
++			       "greater than 16TB and can cause data corruption."
++			       "Use \"force_over_16tb\" mount option to override."
++			       "\n");
++			goto failed_mount;
++		}
++	}
++
+ 	if (EXT4_BLOCKS_PER_GROUP(sb) == 0)
+ 		goto cantfind_ext4;
+ 
diff --git a/ldiskfs/kernel_patches/patches/ext4-force_over_8tb-rhel5.patch b/ldiskfs/kernel_patches/patches/ext4-force_over_8tb-rhel5.patch
deleted file mode 100644
index 6529fbc..0000000
--- a/ldiskfs/kernel_patches/patches/ext4-force_over_8tb-rhel5.patch
+++ /dev/null
@@ -1,57 +0,0 @@
-Index: linux-2.6.18-128.1.6/fs/ext4/super.c
-===================================================================
---- linux-2.6.18-128.1.6.orig/fs/ext4/super.c
-+++ linux-2.6.18-128.1.6/fs/ext4/super.c
-@@ -47,6 +47,8 @@
- #include "namei.h"
- #include "group.h"
- 
-+static int force_over_8tb;
-+
- static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
- 			     unsigned long journal_devnum);
- static int ext4_create_journal(struct super_block *, struct ext4_super_block *,
-@@ -1227,6 +1229,7 @@ enum {
- 	Opt_grpquota, Opt_extents, Opt_noextents, Opt_i_version,
- 	Opt_mballoc, Opt_nomballoc, Opt_stripe,
- 	Opt_iopen, Opt_noiopen, Opt_iopen_nopriv, Opt_bigendian_extents,
-+	Opt_force_over_8tb,
- };
- 
- static match_table_t tokens = {
-@@ -1289,6 +1292,7 @@ static match_table_t tokens = {
- 	{Opt_stripe, "stripe=%u"},
- 	{Opt_resize, "resize"},
- 	{Opt_bigendian_extents, "bigendian_extents"},
-+	{Opt_force_over_8tb, "force_over_8tb"},
- 	{Opt_err, NULL},
- };
- 
-@@ -1690,6 +1694,9 @@ clear_qf_name:
- 		case Opt_bigendian_extents:
- 			bigendian_extents = 1;
- 			break;
-+		case Opt_force_over_8tb:
-+			force_over_8tb = 1;
-+			break;
- 		default:
- 			printk(KERN_ERR
- 			       "EXT4-fs: Unrecognized mount option \"%s\" "
-@@ -2534,6 +2541,17 @@ static int ext4_fill_super(struct super_
- 		goto failed_mount;
- 	}
- 
-+	if (ext4_blocks_count(es) >
-+	    ((0x80000000000ULL >> sb->s_blocksize_bits) - 1)) {
-+		if (force_over_8tb == 0) {
-+			printk(KERN_ERR "EXT4-fs does not support filesystems "
-+			       "greater than 8TB and can cause data corruption."
-+			       "Use \"force_over_8tb\" mount option to override."
-+			       "\n");
-+			goto failed_mount;
-+		}
-+	}
-+
- 	if (EXT4_BLOCKS_PER_GROUP(sb) == 0)
- 		goto cantfind_ext4;
- 
diff --git a/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel5-ext4.series b/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel5-ext4.series
index b24c812..ecc6b6c 100644
--- a/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel5-ext4.series
+++ b/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel5-ext4.series
@@ -18,7 +18,7 @@ ext4-big-endian-check-2.6-rhel5.patch
 ext4-alloc-policy-2.6-rhel5.patch
 ext4-misc-rhel5.patch
 ext4-convert-group-lock-rhel5.patch
-ext4-force_over_8tb-rhel5.patch
+ext4-force_over_16tb-rhel5.patch
 ext4-pdir-fix.patch
 ext4-osd-iop-common.patch
 ext4-osd-iam-exports.patch