This is a multi-part message in MIME format. --------------B105EE053640841549D3C5CE Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit On 09/18/2017 10:08 AM, Alex K wrote:
Hi Ravishankar,
I am not referring to the arbiter volume(which is showing 0% usage). I am referring to the other 2 volumes which are replicas and should have the exact same data. Checking the status of other bricks in ovirt (bricks used from iso and export domain) I see that they all report same usage of data on the data volumes, except the "vms" volume used for storing vms.
Ah, okay. Some of the things that can cause a variation in disk usage: - Pending self-heals in gluster (check if `gluster volume heal <volname> info` doesn't show any entries. Also if there is anything under `.glusterfs/landfill` folder of the bricks). - XFS speculative preallocation - Possibly some bug in self-healing of sparse files by gluster (although we fixed known bugs a long time back in this area). Regards Ravi
Thanx, Alex
On Sep 18, 2017 07:00, "Ravishankar N" <ravishankar@redhat.com <mailto:ravishankar@redhat.com>> wrote:
On 09/17/2017 08:41 PM, Alex K wrote:
Hi all,
I have replica 3 with 1 arbiter. When checking the gluster volume bricks they are reported as using different space, as per attached. How come they use different space? One would expect to use exactly the same space since they are replica.
The 3rd brick (arbiter ) only holds meta data, so it would not consume as much space as the other 2 data bricks. So what you are seeing is expected behaviour. Regards, Ravi
Thanx, Alex
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--------------B105EE053640841549D3C5CE Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> <br> <div class="moz-cite-prefix">On 09/18/2017 10:08 AM, Alex K wrote:<br> </div> <blockquote type="cite" cite="mid:CABMULtLUPA=6U+YMBo2CT7VQvPqdK6Cx_jaQVZQBJmnjZejJDg@mail.gmail.com"> <div dir="auto">Hi Ravishankar, <div dir="auto"><br> </div> <div dir="auto">I am not referring to the arbiter volume(which is showing 0% usage). I am referring to the other 2 volumes which are replicas and should have the exact same data. Checking the status of other bricks in ovirt (bricks used from iso and export domain) I see that they all report same usage of data on the data volumes, except the "vms" volume used for storing vms.</div> </div> </blockquote> <br> Ah, okay. Some of the things that can cause a variation in disk usage:<br> - Pending self-heals in gluster (check if `gluster volume heal <volname> info` doesn't show any entries. Also if there is anything under `.glusterfs/landfill` folder of the bricks).<br> - XFS speculative preallocation <br> - Possibly some bug in self-healing of sparse files by gluster (although we fixed known bugs a long time back in this area).<br> <br> Regards<br> Ravi<br> <br> <blockquote type="cite" cite="mid:CABMULtLUPA=6U+YMBo2CT7VQvPqdK6Cx_jaQVZQBJmnjZejJDg@mail.gmail.com"> <div dir="auto"> <div dir="auto"><br> </div> <div dir="auto">Thanx,</div> <div dir="auto">Alex</div> </div> <div class="gmail_extra"><br> <div class="gmail_quote">On Sep 18, 2017 07:00, "Ravishankar N" <<a href="mailto:ravishankar@redhat.com" moz-do-not-send="true">ravishankar@redhat.com</a>> wrote:<br type="attribution"> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div text="#000000" bgcolor="#FFFFFF"> <p><br> </p> <br> <div class="m_4192326122491279784moz-cite-prefix">On 09/17/2017 08:41 PM, Alex K wrote:<br> </div> <blockquote type="cite"> <div dir="ltr"> <div> <div> <div> <div>Hi all, <br> <br> </div> I have replica 3 with 1 arbiter. <br> </div> When checking the gluster volume bricks they are reported as using different space, as per attached. How come they use different space? One would expect to use exactly the same space since they are replica. <br> <br> </div> </div> </div> </blockquote> The 3rd brick (arbiter ) only holds meta data, so it would not consume as much space as the other 2 data bricks. So what you are seeing is expected behaviour.<br> Regards,<br> Ravi<br> <blockquote type="cite"> <div dir="ltr"> <div>Thanx, <br> </div> Alex<br> </div> <br> <fieldset class="m_4192326122491279784mimeAttachmentHeader"></fieldset> <br> <pre>______________________________<wbr>_________________ Users mailing list <a class="m_4192326122491279784moz-txt-link-abbreviated" href="mailto:Users@ovirt.org" target="_blank" moz-do-not-send="true">Users@ovirt.org</a> <a class="m_4192326122491279784moz-txt-link-freetext" href="http://lists.ovirt.org/mailman/listinfo/users" target="_blank" moz-do-not-send="true">http://lists.ovirt.org/<wbr>mailman/listinfo/users</a> </pre> </blockquote> <br> </div> </blockquote> </div> </div> </blockquote> <br> </body> </html> --------------B105EE053640841549D3C5CE--