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resize2fs: don't fail when shrinking an empty file system 

This commit fixes a failure when running the commands:

dd if=/dev/zero of=fs bs=1k count=100k; mke2fs fs; resize2fs -Mp fs

We should not try truncating the file system if there is only a single
block group in the file system.

Addresses-Sourceforge-Bug: #3404051

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
bitmap-optimize
Theodore Ts'o 2011-10-16 19:29:40 -04:00
parent cacad7d641
commit 515e555a0c
1 changed files with 1 additions and 1 deletions
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resize/resize2fs.c
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@ -335,7 +335,7 @@ retry:
fs->super->s_blocks_per_group;
if ((fs->group_desc_count == 1) && rem && (rem < overhead))
return EXT2_ET_TOOSMALL;
if (rem && (rem < overhead+50)) {
if ((fs->group_desc_count > 1) && rem && (rem < overhead+50)) {
ext2fs_blocks_count_set(fs->super,
ext2fs_blocks_count(fs->super) - rem);
goto retry;