y others found in the output. This could account for the
missing data. How could I get to the other root objects?
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be the wise thing
to do. IMO it seems a volume which experiences a metadata write error
to the underlying medium should be made immediately read-only anyway.
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> $ sudo btrfsck -s 2 /dev/sdb
> btrfsck: invalid option -- 's'
> usage: btrfsck dev
> Btrfs Btrfs v0.19
>
> What can I do more?
I have found that due to an error in getopt_long() usage, btrfsck does
not accept the short-form option. Use --super instead.
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Ryan C.
FA6
Csum didn't match
btrfs-restore: disk-io.c:441:
find_and_setup_root: Assertion `!(ret)' failed.
Aborted
It seems like -i should ignore the csum mismatch, what am I missing?
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27;t match
> restore: root-tree.c:46: btrfs_find_last_root: Assertion
> `!(path->slots[0] == 0)' failed.
> Aborted
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A6
Csum didn't match
restore: root-tree.c:46: btrfs_find_last_root: Assertion
`!(path->slots[0] == 0)' failed.
Aborted
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Mor
;slots[0] == 0)' failed.
Aborted
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fs filesystems
failed to read /dev/sr0
>
> There are some recovery tools there that may extract your data (look
> at the "recover" program).
I found a 'restore' program, are you referring to the mount option '-o
recovery'?
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tools do have some features that may help us, e.g zero-log.
>
> More recovery details refer to the thread from Hugo:
> http://www.spinics.net/lists/linux-btrfs/msg14890.html
I'll take a look at the 'restore' tool, thanks.
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. 40MB of bad sectors on one 2TB disk in a 6TB volume
does not seem like a lot. Even if the whole beginning of the volume
was wiped out surely there is the equivalent of backup superblocks? I
can hack if I could just get a clue where to start.
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Does anyone have any idea how I should proceed with the below quoted
situation? Unfortunately, I am going to have to give up on btrfs if
it is really so fragile. I am using kernel 3.2.2 and btrfs-tools
from November.
On Sun, Feb 05, 2012 at 12:41:28PM -0600, Ryan C. Underwood wrote:
>
&
=
ii btrfs-tools 0.19+2005-2
Checksumming Copy on Write Filesystem utilities
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