Re: Kernel error during btrfs balance

[Erik Logtenberg <erik@logtenberg.eu>]

Hi,

Please disregard that last message, the filesystem did mount after a
period of hanging in state D. Apparently something called an "orphan"
was unlinked:

[  422.323116] btrfs: use compression
[  761.778675] btrfs: unlinked 1 orphans
[  761.841581] SELinux: initialized (dev dm-5, type btrfs), uses xattr

Thanks,

Erik.


On 01/17/2011 03:37 PM, Erik Logtenberg wrote:
> Hi,
> 
> Additionally, I cannot mount the filesystem anymore. mount gives no
> error messages but hangs in state D.
> dmesg shows:
> [  422.323116] btrfs: use compression
> Which is a good thing, but it doesn't do anything otherwise.
> 
> Thanks,
> 
> Erik.
> 
> 
> On 01/17/2011 03:31 PM, Erik Logtenberg wrote:
>> Hi,
>>
>> Please find attached the error log, for future reference.
>>
>> Forgot to mention:
>> I could still use the system after this error, so it was not a complete
>> fatal error in that regard. All active processes (mostly rsync) were
>> hanging in state D though, so I couldn't kill them anymore. Also the FS
>> was not umountable. So I still had to reboot.
>>
>> Thanks,
>>
>> Erik.
>>
>>
>> On 01/17/2011 03:14 PM, Erik Logtenberg wrote:
>>> Hi,
>>>
>>> btrfs balance results in:
>>>
>>> http://pastebin.com/v5j0809M
>>>
>>> My system: fully up-to-date Fedora 14 with rawhide kernel to make btrfs
>>> balance do useful stuff to my free space:
>>>
>>> kernel-2.6.37-2.fc15.x86_64
>>> btrfs-progs-0.19-12.fc14.x86_64
>>>
>>> Filesystem had 0 bytes free, should be 45G, so on darklings advice I ran
>>> btrfs balance on the fs, while doing heavy I/O (re-running 5 backup jobs
>>> that had failed due to ENOSP).
>>> Up until the crash, btrfs balance did retrieve a couple of Gigs free
>>> space though, so that part of the plan worked just fine.
>>>
>>> Thanks,
>>>
>>> Erik.
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>>
> 
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