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authorEric Sandeen <sandeen@redhat.com>2009-06-17 20:55:39 -0500
committerTheodore Ts'o <tytso@mit.edu>2009-06-18 07:47:54 -0400
commit8a6ede8b7a8d5be0d49d6bfa7616537b61dfdc1b (patch)
treefc506898f6e97571c23fbdf836fbe9c39db6862a /debian/e2fslibs.symbols
parent827c1887118eb68a64f8455d0b7cbbbed65e714a (diff)
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resize2fs: update sb journal backup if journal was moved
This was reported in Fedora, since the livecd creator does a lot of resizing. If we've moved the journal blocks during resize (more likely now, due to the journal being in the middle) the backup blocks in the superblock don't get updated, and a subsequent e2fsck will find issues: e2fsck 1.41.6 (30-May-2009) Backing up journal inode block information. Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information /mnt/test/img: ***** FILE SYSTEM WAS MODIFIED ***** /mnt/test/img: 11/16000 files (0.0% non-contiguous), 17789/38400 blocks This can be shown in a simple test: # dd if=/dev/zero of=img bs=1 count=0 seek=3000M # mke2fs -t ext4 -F img # resize2fs img 150M # e2fsck -f img (thanks to the Fedora reporter Mads Kiilerich for the testcase! https://bugzilla.redhat.com/show_bug.cgi?id=506105#c2) So, update the backup journal in the superblock before resize2fs exits. Addresses-RedHat-Bugzilla: #505339 Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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