[Gluster-devel] [Gluster-users] missing files

Pranith Kumar Karampuri pkarampu at redhat.com
Thu Feb 5 10:30:04 UTC 2015 

On 02/05/2015 03:48 PM, Pranith Kumar Karampuri wrote:
> I believe David already fixed this. I hope this is the same issue he 
> told about permissions issue.
Oops, it is not. I will take a look.

Pranith
>
> Pranith
> On 02/05/2015 03:44 PM, Xavier Hernandez wrote:
>> Is the failure repeatable ? with the same directories ?
>>
>> It's very weird that the directories appear on the volume when you do 
>> an 'ls' on the bricks. Could it be that you only made a single 'ls' 
>> on fuse mount which not showed the directory ? Is it possible that 
>> this 'ls' triggered a self-heal that repaired the problem, whatever 
>> it was, and when you did another 'ls' on the fuse mount after the 
>> 'ls' on the bricks, the directories were there ?
>>
>> The first 'ls' could have healed the files, causing that the 
>> following 'ls' on the bricks showed the files as if nothing were 
>> damaged. If that's the case, it's possible that there were some 
>> disconnections during the copy.
>>
>> Added Pranith because he knows better replication and self-heal details.
>>
>> Xavi
>>
>> On 02/04/2015 07:23 PM, David F. Robinson wrote:
>>> Distributed/replicated
>>>
>>> Volume Name: homegfs
>>> Type: Distributed-Replicate
>>> Volume ID: 1e32672a-f1b7-4b58-ba94-58c085e59071
>>> Status: Started
>>> Number of Bricks: 4 x 2 = 8
>>> Transport-type: tcp
>>> Bricks:
>>> Brick1: gfsib01a.corvidtec.com:/data/brick01a/homegfs
>>> Brick2: gfsib01b.corvidtec.com:/data/brick01b/homegfs
>>> Brick3: gfsib01a.corvidtec.com:/data/brick02a/homegfs
>>> Brick4: gfsib01b.corvidtec.com:/data/brick02b/homegfs
>>> Brick5: gfsib02a.corvidtec.com:/data/brick01a/homegfs
>>> Brick6: gfsib02b.corvidtec.com:/data/brick01b/homegfs
>>> Brick7: gfsib02a.corvidtec.com:/data/brick02a/homegfs
>>> Brick8: gfsib02b.corvidtec.com:/data/brick02b/homegfs
>>> Options Reconfigured:
>>> performance.io-thread-count: 32
>>> performance.cache-size: 128MB
>>> performance.write-behind-window-size: 128MB
>>> server.allow-insecure: on
>>> network.ping-timeout: 10
>>> storage.owner-gid: 100
>>> geo-replication.indexing: off
>>> geo-replication.ignore-pid-check: on
>>> changelog.changelog: on
>>> changelog.fsync-interval: 3
>>> changelog.rollover-time: 15
>>> server.manage-gids: on
>>>
>>>
>>> ------ Original Message ------
>>> From: "Xavier Hernandez" <xhernandez at datalab.es>
>>> To: "David F. Robinson" <david.robinson at corvidtec.com>; "Benjamin
>>> Turner" <bennyturns at gmail.com>
>>> Cc: "gluster-users at gluster.org" <gluster-users at gluster.org>; "Gluster
>>> Devel" <gluster-devel at gluster.org>
>>> Sent: 2/4/2015 6:03:45 AM
>>> Subject: Re: [Gluster-devel] missing files
>>>
>>>> On 02/04/2015 01:30 AM, David F. Robinson wrote:
>>>>> Sorry. Thought about this a little more. I should have been clearer.
>>>>> The files were on both bricks of the replica, not just one side. So,
>>>>> both bricks had to have been up... The files/directories just 
>>>>> don't show
>>>>> up on the mount.
>>>>> I was reading and saw a related bug
>>>>> (https://bugzilla.redhat.com/show_bug.cgi?id=1159484). I saw it
>>>>> suggested to run:
>>>>>          find <mount> -d -exec getfattr -h -n trusted.ec.heal {} \;
>>>>
>>>> This command is specific for a dispersed volume. It won't do anything
>>>> (aside from the error you are seeing) on a replicated volume.
>>>>
>>>> I think you are using a replicated volume, right ?
>>>>
>>>> In this case I'm not sure what can be happening. Is your volume a pure
>>>> replicated one or a distributed-replicated ? on a pure replicated it
>>>> doesn't make sense that some entries do not show in an 'ls' when the
>>>> file is in both replicas (at least without any error message in the
>>>> logs). On a distributed-replicated it could be caused by some problem
>>>> while combining contents of each replica set.
>>>>
>>>> What's the configuration of your volume ?
>>>>
>>>> Xavi
>>>>
>>>>>
>>>>> I get a bunch of errors for operation not supported:
>>>>> [root at gfs02a homegfs]# find wks_backup -d -exec getfattr -h -n
>>>>> trusted.ec.heal {} \;
>>>>> find: warning: the -d option is deprecated; please use -depth 
>>>>> instead,
>>>>> because the latter is a POSIX-compliant feature.
>>>>> wks_backup/homer_backup/backup: trusted.ec.heal: Operation not 
>>>>> supported
>>>>> wks_backup/homer_backup/logs/2014_05_20.log: trusted.ec.heal: 
>>>>> Operation
>>>>> not supported
>>>>> wks_backup/homer_backup/logs/2014_05_21.log: trusted.ec.heal: 
>>>>> Operation
>>>>> not supported
>>>>> wks_backup/homer_backup/logs/2014_05_18.log: trusted.ec.heal: 
>>>>> Operation
>>>>> not supported
>>>>> wks_backup/homer_backup/logs/2014_05_19.log: trusted.ec.heal: 
>>>>> Operation
>>>>> not supported
>>>>> wks_backup/homer_backup/logs/2014_05_22.log: trusted.ec.heal: 
>>>>> Operation
>>>>> not supported
>>>>> wks_backup/homer_backup/logs: trusted.ec.heal: Operation not 
>>>>> supported
>>>>> wks_backup/homer_backup: trusted.ec.heal: Operation not supported
>>>>> ------ Original Message ------
>>>>> From: "Benjamin Turner" <bennyturns at gmail.com
>>>>> <mailto:bennyturns at gmail.com>>
>>>>> To: "David F. Robinson" <david.robinson at corvidtec.com
>>>>> <mailto:david.robinson at corvidtec.com>>
>>>>> Cc: "Gluster Devel" <gluster-devel at gluster.org
>>>>> <mailto:gluster-devel at gluster.org>>; "gluster-users at gluster.org"
>>>>> <gluster-users at gluster.org <mailto:gluster-users at gluster.org>>
>>>>> Sent: 2/3/2015 7:12:34 PM
>>>>> Subject: Re: [Gluster-devel] missing files
>>>>>> It sounds to me like the files were only copied to one replica, 
>>>>>> werent
>>>>>> there for the initial for the initial ls which triggered a self 
>>>>>> heal,
>>>>>> and were there for the last ls because they were healed. Is there 
>>>>>> any
>>>>>> chance that one of the replicas was down during the rsync? It could
>>>>>> be that you lost a brick during copy or something like that. To
>>>>>> confirm I would look for disconnects in the brick logs as well as
>>>>>> checking glusterfshd.log to verify the missing files were actually
>>>>>> healed.
>>>>>>
>>>>>> -b
>>>>>>
>>>>>> On Tue, Feb 3, 2015 at 5:37 PM, David F. Robinson
>>>>>> <david.robinson at corvidtec.com <mailto:david.robinson at corvidtec.com>>
>>>>>> wrote:
>>>>>>
>>>>>>     I rsync'd 20-TB over to my gluster system and noticed that I had
>>>>>>     some directories missing even though the rsync completed 
>>>>>> normally.
>>>>>>     The rsync logs showed that the missing files were transferred.
>>>>>>     I went to the bricks and did an 'ls -al
>>>>>>     /data/brick*/homegfs/dir/*' the files were on the bricks. 
>>>>>> After I
>>>>>>     did this 'ls', the files then showed up on the FUSE mounts.
>>>>>>     1) Why are the files hidden on the fuse mount?
>>>>>>     2) Why does the ls make them show up on the FUSE mount?
>>>>>>     3) How can I prevent this from happening again?
>>>>>>     Note, I also mounted the gluster volume using NFS and saw the 
>>>>>> same
>>>>>>     behavior. The files/directories were not shown until I did the
>>>>>>     "ls" on the bricks.
>>>>>>     David
>>>>>>     ===============================
>>>>>>     David F. Robinson, Ph.D.
>>>>>>     President - Corvid Technologies
>>>>>>     704.799.6944 x101 <tel:704.799.6944%20x101> [office]
>>>>>>     704.252.1310 <tel:704.252.1310> [cell]
>>>>>>     704.799.7974 <tel:704.799.7974> [fax]
>>>>>>     David.Robinson at corvidtec.com 
>>>>>> <mailto:David.Robinson at corvidtec.com>
>>>>>>     http://www.corvidtechnologies.com
>>>>>> <http://www.corvidtechnologies.com/>
>>>>>>
>>>>>>     _______________________________________________
>>>>>>     Gluster-devel mailing list
>>>>>>     Gluster-devel at gluster.org <mailto:Gluster-devel at gluster.org>
>>>>>> http://www.gluster.org/mailman/listinfo/gluster-devel
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>> Gluster-devel at gluster.org
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>>>>>
>>>
>
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