When flex_bg is on, calculate_minimum_resize_size() should add more meta
blocks for newly added flex_bg.
Addresses-Red-Hat-Bug: #519131
Signed-off-by: Peng Tao <bergwolf@xxxxxxxxx>
---
resize/resize2fs.c | 20 +++++++++++++++++---
1 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/resize/resize2fs.c b/resize/resize2fs.c
index c0b00b6..648e1f9 100644
--- a/resize/resize2fs.c
+++ b/resize/resize2fs.c
@@ -1900,6 +1900,8 @@ blk_t calculate_minimum_resize_size(ext2_filsys fs)
blk_t inode_count, blks_needed, groups, data_blocks;
blk_t grp, data_needed, last_start;
int overhead = 0, num_of_superblocks = 0;
+ int extra_groups = 0;
+ int flexbg_size = 1 << fs->super->s_log_groups_per_flex;
/*
* first figure out how many group descriptors we need to
@@ -1934,11 +1936,9 @@ blk_t calculate_minimum_resize_size(ext2_filsys fs)
* of inode tables of slack space so the resize
* operation can be guaranteed to finish.
*/
- int flexbg_size = 1 << fs->super->s_log_groups_per_flex;
- int extra_groups;
-
extra_groups = flexbg_size - (groups & (flexbg_size - 1));
data_needed += META_OVERHEAD(fs) * extra_groups;
+ extra_groups = groups % flexbg_size;
}
/*
@@ -2002,6 +2002,20 @@ blk_t calculate_minimum_resize_size(ext2_filsys fs)
}
groups += extra_grps;
+ extra_groups += extra_grps;
+ if (fs->super->s_feature_incompat
+ & EXT4_FEATURE_INCOMPAT_FLEX_BG
+ && extra_groups > flexbg_size) {
+ /*
+ * 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.
+ */
+ extra_groups = flexbg_size -
+ (groups & (flexbg_size - 1));
+ data_needed += META_OVERHEAD(fs) * extra_groups;
+ extra_groups = groups % flexbg_size;
+ }
}
/* now for the fun voodoo */
--
1.6.4.2.446.gbd046
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