[Bug 95571] New: ext4 fs corruption on power-cut while running fsstress

[Bug 95571] New: ext4 fs corruption on power-cut while running fsstress

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=95571

            Bug ID: 95571
           Summary: ext4 fs corruption on power-cut while running fsstress
           Product: File System
           Version: 2.5
    Kernel Version: 4.0.0-rc3
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext4
          Assignee: fs_ext4@kernel-bugs.osdl.org
          Reporter: ionut.trandafir12@gmail.com
        Regression: No

Created attachment 172361
  --> https://bugzilla.kernel.org/attachment.cgi?id=172361&action=edit
ext4 fs corruption at power cut

I'm using an Ubuntu-13.10 VM for this testing. Kernel 4.0.0-rc3 compiled from
git and e2fsprogs 1.42.12.
The steps I run:
 # mkfs.ext4 /dev/sdb1
 # mount -t ext4 -o defaults,barrier=1,noatime /dev/sdb1 /mnt
 # fsstress -w -X -d /mnt/fsstress -l 0 -n 100 -p 100 -s urandom
Let it run for 10 sec and then poweroff the virtual machine:
 $ vboxmanage controlvm Ubuntu-13.10-server poweroff
After reboot, I run:
 # fsck.ext4 -vpf /dev/sdb1
This fails with exit code 4, 2 out of 10 runs. The fail log is attached.

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