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[Bug 956819] btrfs format generates incorrect CRC on non-4k pagesize architectures
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 05 Feb 2016 09:15:00 +0000
  • Message-id: <bug-956819-21960-PGle0vpwYF@http.bugzilla.suse.com/>
http://bugzilla.suse.com/show_bug.cgi?id=956819
http://bugzilla.suse.com/show_bug.cgi?id=956819#c7

--- Comment #7 from Dirk Mueller <dmueller@xxxxxxxx> ---
For QA purposes, here#s the explanation about the problem, quoted from the
commit message:

+If sectorsize is not BTRFS_SUPER_INFO_SIZE (4k), the superblock checksum
+is wrong and mkfs fails. This has been reported on ppc64 where we pick
+sectorisize from page size (64k). This has been broken since ages
+(2008) and discovered by the recently added superblock checks.

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