[Gluster-users] Possible error not being returned

[Xavier Hernandez]

It's possible that the operation that failed is an internal one made by 
disperse itself or any other translator, so this error is not reported 
to the application.

The read issued by the application will only fail if anything fails 
while processing the read itself. If everything goes well, the read will 
succeed and it should contain healthy data.

What configuration are you using ? (gluster volume info)
What are you doing exactly ? (workload)
Why is one brick down/damaged ? are you doing tests ? how are you doing 
them ?

Best regards,

Xavi

On 20/05/16 16:54, Ankireddypalle Reddy wrote:
> Hi,
>
>         Did anyone get a chance to check this. We are intermittently
> receiving corrupted data in read operations because of this.
>
>
>
> Thanks and Regards,
>
> Ram
>
>
>
> *From:*gluster-users-bounces at gluster.org
> [mailto:gluster-users-bounces at gluster.org] *On Behalf Of *Ankireddypalle
> Reddy
> *Sent:* Thursday, May 19, 2016 3:59 PM
> *To:* gluster-users at gluster.org
> *Subject:* [Gluster-users] Possible error not being returned
>
>
>
> Hi,
>
>        A disperse volume  was configured on  servers with limited
> network bandwidth. Some of the read operations failed with error
>
>
>
> [2016-05-16 18:38:36.035559] E [MSGID: 122034]
> [ec-common.c:461:ec_child_select] 0-SDSStoragePool-disperse-2:
> Insufficient available childs for this request (have 1, need 2)
>
> [2016-05-16 18:38:36.035713] W [fuse-bridge.c:2213:fuse_readv_cbk]
> 0-glusterfs-fuse: 155121179: READ => -1 (Input/output error)
>
>
>
> For some read operations just the following error was logged but the I/O
> did not fail.
>
> [2016-05-16 18:42:45.401570] E [MSGID: 122034]
> [ec-common.c:461:ec_child_select] 0-SDSStoragePool-disperse-3:
> Insufficient available childs for this request (have 1, need 2)
>
> [2016-05-16 18:42:45.402054] W [MSGID: 122053]
> [ec-common.c:116:ec_check_status] 0-SDSStoragePool-disperse-3: Operation
> failed on some subvolumes (up=7, mask=6, remaining=0, good=6, bad=1)
>
>
>
> We are receiving corrupted data in the read operation when the error is
> logged but the read call did not return any error.
>
>
>
> Thanks and Regards,
>
> Ram
>
>
>
>
>
>
>
>
>
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