Re: [RFC PATCH] Btrfs: fix full backref problem when inserting shared block reference

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On Thu, Aug 09, 2012 at 08:48:02AM +0200, David Sterba wrote:
> and down, no problems so far, and the "wikipedia" test-subvol stresstest
> that caused trouble to one of your patches is also ok. I'll do some more
> testing on other machines and will report problems eventually.

So it won't be so easy :)

The test generated 15+ G of data, ~500 snapshots, then umount and fsck:

lots of

ref mismatch on [9655283712 4096] extent item 1, found 0
Incorrect local backref count on 9655283712 root 5 owner 589776 offset 110592 found 0 wanted 1 back 0x86badf0
backpointer mismatch on [9655283712 4096]
owner ref check failed [9655283712 4096]

and then

checking fs roots
root 2854 inode 233882 errors 2500
root 2880 inode 271639 errors 2200

and it's not finished yet, other types of error may pop up.

david
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