[Gluster-users] gluster 3.7 healing errors (no data available, buf->ia_gfid is null)

[Pranith Kumar Karampuri]

On Thu, Sep 22, 2016 at 12:51 PM, Ravishankar N <ravishankar at redhat.com>
wrote:

> On 09/22/2016 12:38 PM, Pasi Kärkkäinen wrote:
>
>> On Thu, Sep 22, 2016 at 09:58:25AM +0530, Ravishankar N wrote:
>>
>>> On 09/21/2016 10:54 PM, Pasi Kärkkäinen wrote:
>>>
>>>> Let's see.
>>>>
>>>> # getfattr -m . -d -e hex /bricks/vol1/brick1/foo
>>>> getfattr: Removing leading '/' from absolute path names
>>>> # file: bricks/vol1/brick1/foo
>>>> security.selinux=0x756e636f6e66696e65645f753a6f626a6563745f7
>>>> 23a756e6c6162656c65645f743a733000
>>>>
>>>> So hmm.. no trusted.gfid it seems.. is that perhaps because this node
>>>> was down when the file was created?
>>>>
>>> No, even if that were the case, the gfid should have been set while
>>> healing the file to this node.
>>> Can you try doing a setfattr -n trusted.gfid -v
>>> 0xc1ca778ed2af4828b981171c0c5bd45e on the file. and launch heal
>>> again?
>>> What about the .glusterfs hardlink- does that exist?
>>>
>>> It seems there's no hardlink.. nothing in /bricks/vol1/brick1/.glusterfs/c1/ca/
>> directory.
>>
>> Now I manually set the trusted.gfid value on the file, and launched heal
>> again,
>> and now gluster was able to heal it OK! Healing is now fully complete,
>> and no out-of-sync files anymore.
>>
>> Any idea what caused the missing trusted.gfid ?
>>
>
Do you want to raise a bug for this? We would love to if you don't have the
time to make sure we address this.


> A create FOP is a multi step process on the bricks.
> 1.creating the file on the actual path
> 2. Setting the gluster xattrs including gfid xattr
> 3. Creating the link file inside .glusterfs
>
> I'm guessing your brick went down after step 1 for the files in question.
> Check the brick logs to check for such messages. If the brick was still up,
> check if there are logs for failures related to performing 2 and 3.
>
> By the way, if everything healed successfully, check that the .glusterfs
> hardlink  is now present.
>
> -Ravi
>
>
>
>>
>>
>> Thanks a lot!
>>
>> -- Pasi
>>
>>
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>



-- 
Pranith
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