Ankireddypalle Reddy
2016-May-20 14:54 UTC
[Gluster-users] Possible error not being returned
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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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 > > > > > > > > > > ***************************Legal Disclaimer*************************** > > "This communication may contain confidential and privileged material for the > > sole use of the intended recipient. Any unauthorized review, use or distribution > > by others is strictly prohibited. If you have received the message by mistake, > > please advise the sender by reply email and delete the message. Thank you." > > ********************************************************************** > > > ***************************Legal Disclaimer*************************** > "This communication may contain confidential and privileged material for the > sole use of the intended recipient. Any unauthorized review, use or distribution > by others is strictly prohibited. If you have received the message by mistake, > please advise the sender by reply email and delete the message. Thank you." > ********************************************************************** > > > > _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://www.gluster.org/mailman/listinfo/gluster-users >