b=16498

i=adilger
i=girish

get RAID stripe size from the superblock

diff --git a/ldiskfs/ChangeLog b/ldiskfs/ChangeLog
index 92dbcc5..5c136f8 100644 (file)
--- a/ldiskfs/ChangeLog
+++ b/ldiskfs/ChangeLog
@@ -34,6 +34,13 @@ Details    : FIEMAP ioctl will allow an application to efficiently fetch the
              extent information of a file. It can be used to map logical blocks
              in a file to physical blocks in the block device.
 
+Severity   : normal
+Bugzilla   : 16498
+Description: Get RAID stripe size from superblock
+Details    : RAID striping parameters are now saved in the superblock itself,
+            so we should use these parameters instead of having to specify
+            a mount option each time.
+
 -------------------------------------------------------------------------------
 
 04-26-2008  Sun Microsystems, Inc.

diff --git a/ldiskfs/kernel_patches/patches/ext3-get-raid-stripe-from-sb-2.6-suse.patch b/ldiskfs/kernel_patches/patches/ext3-get-raid-stripe-from-sb-2.6-suse.patch
new file mode 100644 (file)
index 0000000..566722b
--- /dev/null
+++ b/ldiskfs/kernel_patches/patches/ext3-get-raid-stripe-from-sb-2.6-suse.patch
@@ -0,0 +1,67 @@
+Index: linux-2.6.5-7.312/fs/ext3/super.c
+===================================================================
+--- linux-2.6.5-7.312.orig/fs/ext3/super.c
++++ linux-2.6.5-7.312/fs/ext3/super.c
+@@ -1298,6 +1298,34 @@ static int ext3_max_dir_size_write(struc
+       return count;
+ }
+ 
++/*
++ * ext3_get_stripe_size: Get the stripe size.
++ * @sbi: In memory super block info
++ *
++ * If we have specified it via mount option, then
++ * use the mount option value. If the value specified at mount time is
++ * greater than the blocks per group use the super block value.
++ * If the super block value is greater than blocks per group return 0.
++ * Allocator needs it be less than blocks per group.
++ */
++static unsigned long ext3_get_stripe_size(struct ext3_sb_info *sbi)
++{
++      unsigned long stride = le16_to_cpu(sbi->s_es->s_raid_stride);
++      unsigned long stripe_width =
++                      le32_to_cpu(sbi->s_es->s_raid_stripe_width);
++
++      if (sbi->s_stripe && sbi->s_stripe <= sbi->s_blocks_per_group)
++              return sbi->s_stripe;
++
++      if (stripe_width <= sbi->s_blocks_per_group)
++              return stripe_width;
++
++      if (stride <= sbi->s_blocks_per_group)
++              return stride;
++
++      return 0;
++}
++
+ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
+ {
+       struct buffer_head * bh;
+@@ -1618,6 +1646,8 @@ static int ext3_fill_super (struct super
+       atomic_set(&sbi->s_rsv_window_head.rsv_goal_size, 0);
+       rsv_window_add(sb, &sbi->s_rsv_window_head);
+ 
++        sbi->s_stripe = ext3_get_stripe_size(sbi);
++
+       /*
+        * set up enough so that it can read an inode
+        */
+Index: linux-2.6.5-7.312/include/linux/ext3_fs.h
+===================================================================
+--- linux-2.6.5-7.312.orig/include/linux/ext3_fs.h
++++ linux-2.6.5-7.312/include/linux/ext3_fs.h
+@@ -505,8 +505,12 @@ struct ext3_super_block {
+       __u32   s_free_blocks_hi;       /* Free blocks count high 32 bits */
+       __u16   s_min_extra_isize;      /* All inodes have at least # bytes */
+       __u16   s_want_extra_isize;     /* New inodes should reserve # bytes */
+-      __u32   s_flags;                /* Miscellaneous flags */
+-      __u32   s_reserved[167];        /* Padding to the end of the block */
++/*160*/ __le32  s_flags;              /* Miscellaneous flags */
++      __le16  s_raid_stride;          /* RAID stride */
++      __le16  s_mmp_update_interval;  /* # seconds to wait in MMP checking */
++      __le64  s_mmp_block;            /* Block for multi-mount protection */
++/*170*/ __le32  s_raid_stripe_width;    /* blocks on all data disks (N*stride)*/
++      __le32  s_reserved[163];        /* Padding to the end of the block */
+ };
+ 
+ #ifdef __KERNEL__

diff --git a/ldiskfs/kernel_patches/patches/ext3-get-raid-stripe-from-sb.patch b/ldiskfs/kernel_patches/patches/ext3-get-raid-stripe-from-sb.patch
new file mode 100644 (file)
index 0000000..07f251d
--- /dev/null
+++ b/ldiskfs/kernel_patches/patches/ext3-get-raid-stripe-from-sb.patch
@@ -0,0 +1,49 @@
+Index: linux-2.6.18-53.1.14/fs/ext3/super.c
+===================================================================
+--- linux-2.6.18-53.1.14.orig/fs/ext3/super.c
++++ linux-2.6.18-53.1.14/fs/ext3/super.c
+@@ -1900,6 +1900,34 @@ static int ext3_max_dir_size_write(struc
+       return count;
+ }
+ 
++/*
++ * ext3_get_stripe_size: Get the stripe size.
++ * @sbi: In memory super block info
++ *
++ * If we have specified it via mount option, then
++ * use the mount option value. If the value specified at mount time is
++ * greater than the blocks per group use the super block value.
++ * If the super block value is greater than blocks per group return 0.
++ * Allocator needs it be less than blocks per group.
++ */
++static unsigned long ext3_get_stripe_size(struct ext3_sb_info *sbi)
++{
++      unsigned long stride = le16_to_cpu(sbi->s_es->s_raid_stride);
++      unsigned long stripe_width =
++                      le32_to_cpu(sbi->s_es->s_raid_stripe_width);
++
++      if (sbi->s_stripe && sbi->s_stripe <= sbi->s_blocks_per_group)
++              return sbi->s_stripe;
++
++      if (stripe_width <= sbi->s_blocks_per_group)
++              return stripe_width;
++
++      if (stride <= sbi->s_blocks_per_group)
++              return stride;
++
++      return 0;
++}
++
+ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
+ {
+       struct buffer_head * bh;
+@@ -2221,6 +2249,8 @@ static int ext3_fill_super (struct super
+       sbi->s_rsv_window_head.rsv_goal_size = 0;
+       ext3_rsv_window_add(sb, &sbi->s_rsv_window_head);
+ 
++        sbi->s_stripe = ext3_get_stripe_size(sbi);
++
+       /*
+        * set up enough so that it can read an inode
+        */
+

diff --git a/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel4.series b/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel4.series
index 6b98dbf..6554da5 100644 (file)
--- a/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel4.series
+++ b/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel4.series
@@ -27,3 +27,4 @@ ext3-print-inum-in-htree-warning.patch
 ext3-xattr-no-update-ctime-rhel4.patch
 ext3-check-bad-inode.patch
 ext3-fiemap-2.6-rhel4.patch
+ext3-get-raid-stripe-from-sb.patch

diff --git a/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel5.series b/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel5.series
index f62ce8d..534a7e8 100644 (file)
--- a/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel5.series
+++ b/ldiskfs/kernel_patches/series/ldiskfs-2.6-rhel5.series
@@ -24,3 +24,4 @@ ext3-print-inum-in-htree-warning.patch
 ext3-block-bitmap-validation-2.6-rhel5.patch
 ext3-xattr-no-update-ctime-2.6.22-vanilla.patch
 ext3-journal-chksum-2.6.18-vanilla.patch
+ext3-get-raid-stripe-from-sb.patch

diff --git a/ldiskfs/kernel_patches/series/ldiskfs-2.6-sles10.series b/ldiskfs/kernel_patches/series/ldiskfs-2.6-sles10.series
index dd26554..96d3c32 100644 (file)
--- a/ldiskfs/kernel_patches/series/ldiskfs-2.6-sles10.series
+++ b/ldiskfs/kernel_patches/series/ldiskfs-2.6-sles10.series
@@ -29,3 +29,4 @@ ext3-block-bitmap-validation-2.6-sles10.patch
 ext3-xattr-no-update-ctime-2.6-sles10.patch
 ext3-check-bad-inode.patch
 ext3-journal-chksum-2.6.18-vanilla.patch
+ext3-get-raid-stripe-from-sb.patch

diff --git a/ldiskfs/kernel_patches/series/ldiskfs-2.6-suse.series b/ldiskfs/kernel_patches/series/ldiskfs-2.6-suse.series
index b6d7bb0..86d27c4 100644 (file)
--- a/ldiskfs/kernel_patches/series/ldiskfs-2.6-suse.series
+++ b/ldiskfs/kernel_patches/series/ldiskfs-2.6-suse.series
@@ -26,3 +26,4 @@ ext3-max-dir-size-2.6.5-suse.patch
 ext3-print-inum-in-htree-warning.patch
 ext3-xattr-no-update-ctime-suse.patch
 ext3-check-bad-inode.patch
+ext3-get-raid-stripe-from-sb-2.6-suse.patch

diff --git a/ldiskfs/kernel_patches/series/ldiskfs-2.6.22-vanilla.series b/ldiskfs/kernel_patches/series/ldiskfs-2.6.22-vanilla.series
index 65a6d4f..a95833e 100644 (file)
--- a/ldiskfs/kernel_patches/series/ldiskfs-2.6.22-vanilla.series
+++ b/ldiskfs/kernel_patches/series/ldiskfs-2.6.22-vanilla.series
@@ -24,3 +24,4 @@ ext3-max-dir-size.patch
 ext3-print-inum-in-htree-warning.patch
 ext3-xattr-no-update-ctime-2.6.22-vanilla.patch
 ext3-check-bad-inode.patch
+ext3-get-raid-stripe-from-sb.patch