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[Bug 897774] btrfsck crashing while checking a corrupted file system
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Thu, 05 Jan 2017 13:23:00 +0000
  • Message-id: <bug-897774-21960-YBVO9uZBLw@http.bugzilla.opensuse.org/>
http://bugzilla.opensuse.org/show_bug.cgi?id=897774
http://bugzilla.opensuse.org/show_bug.cgi?id=897774#c13

--- Comment #13 from Libor Pechacek <lpechacek@xxxxxxxx> ---
(In reply to Johannes Obermayr from comment #12)
Created attachment 708707 [details]
Requested btrfs-image

# btrfs-image -c 9 /dev/sda2 btrfs-dump
parent transid verify failed on 67666722816 wanted 385998 found 386004
Ignoring transid failure

OK... btrfs-image hit the same on-disk error and produced a corrupted image.
The corruption is so severe that it leaked into btrfs-image text output while
trying to restore the file system. ;-)

lpechacek@fm:/data/src/btrfs-progs> ./btrfs-image -r
/data/src/btrfs-progs/bsc897774-btrfs-dump
/data/src/btrfs-progs/bsc897774-btrfs-broken
ERROR: unknown state after reading cluster at 0, probably crrupted data
ERROR: restore failed: Success

Having a full partition image would help tremendously, Johannes. However, I
understand the privacy concerns you may have with this step therefore do not
set needinfo from you. If you agree to upload the compressed partition image
to SUSE FTP, let us know. Otherwise leave the bug as is. Thanks!

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