<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On 24 May 2017 at 22:54, Mahdi Adnan <span dir="ltr"><<a href="mailto:mahdi.adnan@outlook.com" target="_blank">mahdi.adnan@outlook.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div id="m_-2836657550234851593divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<p>Well yes and no, when i start the re-balance and check it's status, it just tells me it completed the re-balance, but it really did not move any data and the volume is not evenly distributed.</p>
<p>right now brick6 is full, brick 5 is going to be full in few hours or so.</p></div></div></blockquote><div><br></div><div>An update on this - on further analysis it looked like the rebalance was actually happening and files were being migrated. However as the files were large (2TB) and the rebalance status does not update the Rebalanced or Size columns until a file migration is complete, it looked like nothing was happening.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div id="m_-2836657550234851593divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr"><span class=""><div id="m_-2836657550234851593Signature">
<div class="m_-2836657550234851593ecxmoz-signature">-- <br>
<br>
<font color="#3366ff"><font color="#000000">Respectfully<b><br>
</b><b>Mahdi A. Mahdi</b></font></font><font color="#3366ff"><br>
<br>
</font><font color="#3366ff"></font></div>
</div>
</span></div>
<hr style="display:inline-block;width:98%">
<div id="m_-2836657550234851593divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Nithya Balachandran <<a href="mailto:nbalacha@redhat.com" target="_blank">nbalacha@redhat.com</a>><br>
<b>Sent:</b> Wednesday, May 24, 2017 8:16:53 PM<br>
<b>To:</b> Mahdi Adnan<br>
<b>Cc:</b> Mohammed Rafi K C; <a href="mailto:gluster-users@gluster.org" target="_blank">gluster-users@gluster.org</a><div><div class="h5"><br>
<b>Subject:</b> Re: [Gluster-users] Distributed re-balance issue</div></div></font>
<div> </div>
</div><div><div class="h5">
<div>
<div dir="ltr"><br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 24 May 2017 at 22:45, Nithya Balachandran <span dir="ltr">
<<a href="mailto:nbalacha@redhat.com" target="_blank">nbalacha@redhat.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><br>
<div class="gmail_extra"><br>
<div class="gmail_quote"><span>On 24 May 2017 at 21:55, Mahdi Adnan <span dir="ltr">
<<a href="mailto:mahdi.adnan@outlook.com" target="_blank">mahdi.adnan@outlook.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<p>Hi,</p>
<p><br>
</p>
<p>Thank you for your response.</p>
<p>I have around 15 files, each is 2TB qcow.</p>
<p>One brick reached 96% so i removed it with "brick remove" and waited until it goes for around 40% and stopped the removal process with brick remove stop.</p>
<p>The issue is brick1 drain it's data to brick6 only, and when brick6 reached around 90% i did the same thing as before and it drained the data to brick1 only.</p>
<p><span style="font-size:12pt">now brick6 reached 99% and i have only a few gigabytes left which will fill in the next half hour or so.</span></p>
<p><span style="font-size:12pt">attached are the logs for all 6 bricks. </span><br>
</p>
<span>
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895Signature">
<br>
</div>
</span></div>
</div>
</blockquote>
</span>
<div>Hi,</div>
<div><br>
</div>
<div>Just to clarify, did you run a rebalance (gluster volume rebalance <vol> start) or did you only run remove-brick ?</div>
<div>
<div class="m_-2836657550234851593m_-6727024028091360839h5">
<div><br>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<div>On re-reading your original email, I see you did run a rebalance. Did it complete? Also which bricks are full at the moment?</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">
<div>
<div class="m_-2836657550234851593m_-6727024028091360839h5">
<div></div>
<div><br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<span>
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895Signature">
<div class="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895ecxmoz-signature">
-- <br>
<br>
<font color="#3366ff"><font color="#000000">Respectfully<b><br>
</b><b>Mahdi A. Mahdi</b></font></font><font color="#3366ff"><br>
<br>
</font><font color="#3366ff"></font></div>
</div>
</span></div>
<hr style="display:inline-block;width:98%">
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895divRplyFwdMsg" dir="ltr">
<font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Nithya Balachandran <<a href="mailto:nbalacha@redhat.com" target="_blank">nbalacha@redhat.com</a>><br>
<b>Sent:</b> Wednesday, May 24, 2017 6:45:10 PM<br>
<b>To:</b> Mohammed Rafi K C<br>
<b>Cc:</b> Mahdi Adnan; <a href="mailto:gluster-users@gluster.org" target="_blank">
gluster-users@gluster.org</a><br>
<b>Subject:</b> Re: [Gluster-users] Distributed re-balance issue</font>
<div> </div>
</div>
<div>
<div class="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124h5">
<div>
<div dir="ltr"><br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 24 May 2017 at 20:02, Mohammed Rafi K C <span dir="ltr">
<<a href="mailto:rkavunga@redhat.com" target="_blank">rkavunga@redhat.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"><span>
<p><br>
</p>
<br>
<div class="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447moz-cite-prefix">
On 05/23/2017 08:53 PM, Mahdi Adnan wrote:<br>
</div>
<blockquote type="cite">
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<p>Hi,</p>
<p><br>
</p>
<p>I have a distributed volume with 6 bricks, each have 5TB and it's hosting large qcow2 VM disks (I know it's reliable but it's not important data)</p>
<p>I started with 5 bricks and then added another one, started the re balance process, everything went well, but now im looking at the bricks free space and i found one brick is around 82% while others ranging from 20% to 60%.</p>
<p>The brick with highest utilization is hosting more qcow2 disk than other bricks, and whenever i start re balance it just complete in 0 seconds and without moving any data.</p>
</div>
</blockquote>
<br>
</span>How much is your average file size in the cluster? And number of files (roughly) .<span><br>
<br>
<br>
<blockquote type="cite">
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<p>What will happen with the brick became full ?</p>
</div>
</blockquote>
</span>Once brick contents goes beyond 90%, new files won't be created in the brick. But existing files can grow.<span><br>
<br>
<br>
<blockquote type="cite">
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<p>Can i move data manually from one brick to the other ?</p>
</div>
</blockquote>
<br>
</span>Nop.It is not recommended, even though gluster will try to find the file, it may break.<span><br>
<br>
<br>
<blockquote type="cite">
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<p>Why re balance not distributing data evenly on all bricks ? <br>
</p>
</div>
</blockquote>
<br>
</span>Rebalance works based on layout, so we need to see how layouts are distributed. If one of your bricks has higher capacity, it will have larger layout.<br>
<br>
<blockquote type="cite">
<div>
<div class="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895h5">
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<p><span style="font-family:arial,sans-serif;font-size:small;color:rgb(34,34,34)"></span></p>
</div>
</div>
</div>
</blockquote>
</div>
</blockquote>
<div><br>
</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<blockquote type="cite">
<div>
<div class="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895h5">
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<p><span style="font-family:arial,sans-serif;font-size:small;color:rgb(34,34,34)">That is correct. As Rafi said, the layout matters here. Can you please send across all the rebalance logs from all the 6 nodes?</span><br>
</p>
</div>
</div>
</div>
</blockquote>
</div>
</blockquote>
<div><br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<blockquote type="cite">
<div>
<div class="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895h5">
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir="ltr">
<p></p>
<p>Nodes runing CentOS 7.3</p>
<p>Gluster 3.8.11</p>
<p><br>
</p>
<p>Volume info;</p>
<div>Volume Name: ctvvols</div>
<div>Type: Distribute</div>
<div>Volume ID: 1ecea912-510f-4079-b437-7398e9<wbr>caa0eb</div>
<div>Status: Started</div>
<div>Snapshot Count: 0</div>
<div>Number of Bricks: 6</div>
<div>Transport-type: tcp</div>
<div>Bricks:</div>
<div>Brick1: ctv01:/vols/ctvvols</div>
<div>Brick2: ctv02:/vols/ctvvols</div>
<div>Brick3: ctv03:/vols/ctvvols</div>
<div>Brick4: ctv04:/vols/ctvvols</div>
<div>Brick5: ctv05:/vols/ctvvols</div>
<div>Brick6: ctv06:/vols/ctvvols</div>
<div>Options Reconfigured:</div>
<div>nfs.disable: on</div>
<div>performance.readdir-ahead: on</div>
<div>transport.address-family: inet</div>
<div>performance.quick-read: off</div>
<div>performance.read-ahead: off</div>
<div>performance.io-cache: off</div>
<div>performance.stat-prefetch: off</div>
<div>performance.low-prio-threads: 32</div>
<div>network.remote-dio: enable</div>
<div>cluster.eager-lock: enable</div>
<div>cluster.quorum-type: none</div>
<div>cluster.server-quorum-type: server</div>
<div>cluster.data-self-heal-algorit<wbr>hm: full</div>
<div>cluster.locking-scheme: granular</div>
<div>cluster.shd-max-threads: 8</div>
<div>cluster.shd-wait-qlength: 10000</div>
<div>features.shard: off</div>
<div>user.cifs: off</div>
<div>network.ping-timeout: 10</div>
<div>storage.owner-uid: 36</div>
<div>storage.owner-gid: 36</div>
<div><br>
</div>
<div><br>
</div>
<p>re balance log:</p>
<p><br>
</p>
<div>[2017-05-23 14:45:12.637671] I [dht-rebalance.c:2866:gf_defra<wbr>g_process_dir] 0-ctvvols-dht: Migration operation on dir /31e0b341-4eeb-4b71-b280-840eb<wbr>a7d6940/images/690c728d-a83e-4<wbr>c79-ac7d-1f3f17edf7f0 took 0.00 secs</div>
<div>[2017-05-23 14:45:12.640043] I [MSGID: 109081] [dht-common.c:4202:dht_setxatt<wbr>r] 0-ctvvols-dht: fixing the layout of /31e0b341-4eeb-4b71-b280-840eb<wbr>a7d6940/images/091402ba-dc90-4<wbr>206-848a-d73e85a1cc35</div>
<div>[2017-05-23 14:45:12.641516] I [dht-rebalance.c:2652:gf_defra<wbr>g_process_dir] 0-ctvvols-dht: migrate data called on /31e0b341-4eeb-4b71-b280-840eb<wbr>a7d6940/images/091402ba-dc90-4<wbr>206-848a-d73e85a1cc35</div>
<div>[2017-05-23 14:45:12.642421] I [dht-rebalance.c:2866:gf_defra<wbr>g_process_dir] 0-ctvvols-dht: Migration operation on dir /31e0b341-4eeb-4b71-b280-840eb<wbr>a7d6940/images/091402ba-dc90-4<wbr>206-848a-d73e85a1cc35 took 0.00 secs</div>
<div>[2017-05-23 14:45:12.645610] I [MSGID: 109081] [dht-common.c:4202:dht_setxatt<wbr>r] 0-ctvvols-dht: fixing the layout of /31e0b341-4eeb-4b71-b280-840eb<wbr>a7d6940/images/be1e2276-d38f-4<wbr>d90-abf5-de757dd04078</div>
<div>[2017-05-23 14:45:12.647034] I [dht-rebalance.c:2652:gf_defra<wbr>g_process_dir] 0-ctvvols-dht: migrate data called on /31e0b341-4eeb-4b71-b280-840eb<wbr>a7d6940/images/be1e2276-d38f-4<wbr>d90-abf5-de757dd04078</div>
<div>[2017-05-23 14:45:12.647589] I [dht-rebalance.c:2866:gf_defra<wbr>g_process_dir] 0-ctvvols-dht: Migration operation on dir /31e0b341-4eeb-4b71-b280-840eb<wbr>a7d6940/images/be1e2276-d38f-4<wbr>d90-abf5-de757dd04078 took 0.00 secs</div>
<div>[2017-05-23 14:45:12.653291] I [dht-rebalance.c:3838:gf_defra<wbr>g_start_crawl] 0-DHT: crawling file-system completed</div>
<div>[2017-05-23 14:45:12.653323] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 23</div>
<div>[2017-05-23 14:45:12.653508] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 24</div>
<div>[2017-05-23 14:45:12.653536] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 25</div>
<div>[2017-05-23 14:45:12.653556] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 26</div>
<div>[2017-05-23 14:45:12.653580] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 27</div>
<div>[2017-05-23 14:45:12.653603] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 28</div>
<div>[2017-05-23 14:45:12.653623] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 29</div>
<div>[2017-05-23 14:45:12.653638] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 30</div>
<div>[2017-05-23 14:45:12.653659] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 31</div>
<div>[2017-05-23 14:45:12.653677] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 32</div>
<div>[2017-05-23 14:45:12.653692] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 33</div>
<div>[2017-05-23 14:45:12.653711] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 34</div>
<div>[2017-05-23 14:45:12.653723] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 35</div>
<div>[2017-05-23 14:45:12.653739] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 36</div>
<div>[2017-05-23 14:45:12.653759] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 37</div>
<div>[2017-05-23 14:45:12.653772] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 38</div>
<div>[2017-05-23 14:45:12.653789] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 39</div>
<div>[2017-05-23 14:45:12.653800] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 40</div>
<div>[2017-05-23 14:45:12.653811] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 41</div>
<div>[2017-05-23 14:45:12.653822] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 42</div>
<div>[2017-05-23 14:45:12.653836] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 43</div>
<div>[2017-05-23 14:45:12.653870] I [dht-rebalance.c:2246:gf_defra<wbr>g_task] 0-DHT: Thread wokeup. defrag->current_thread_count: 44</div>
<div>[2017-05-23 14:45:12.654413] I [MSGID: 109028] [dht-rebalance.c:4079:gf_defra<wbr>g_status_get] 0-ctvvols-dht: Rebalance is completed. Time taken is 0.00 secs</div>
<div>[2017-05-23 14:45:12.654428] I [MSGID: 109028] [dht-rebalance.c:4083:gf_defra<wbr>g_status_get] 0-ctvvols-dht: Files migrated: 0, size: 0, lookups: 15, failures: 0, skipped: 0</div>
<div>[2017-05-23 14:45:12.654552] W [glusterfsd.c:1327:cleanup_and<wbr>_exit] (-->/lib64/libpthread.so.0(+0x<wbr>7dc5) [0x7ff40ff88dc5] -->/usr/sbin/glusterfs(gluster<wbr>fs_sigwaiter+0xe5) [0x7ff41161acd5] -->/usr/sbin/glusterfs(cleanup<wbr>_and_exit+0x6b)
[0x7ff41161ab4b] ) 0-: received signum (15), shutting down</div>
<div><br>
</div>
<br>
<p><br>
</p>
<p>Appreciate your help</p>
<p><br>
</p>
<div id="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447Signature">
<br>
<div class="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447ecxmoz-signature">
-- <br>
<br>
<font color="#3366ff"><font color="#000000">Respectfully<b><br>
</b><b>Mahdi A. Mahdi</b></font></font><font color="#3366ff"><br>
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<pre>______________________________<wbr>_________________
Gluster-users mailing list
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<a class="m_-2836657550234851593m_-6727024028091360839m_1205392110087603124m_-2055877162185570895m_-5833328665865246447moz-txt-link-freetext" href="http://lists.gluster.org/mailman/listinfo/gluster-users" target="_blank">http://lists.gluster.org/mailm<wbr>an/listinfo/gluster-users</a></pre>
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______________________________<wbr>_________________<br>
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<a href="mailto:Gluster-users@gluster.org" target="_blank">Gluster-users@gluster.org</a><br>
<a href="http://lists.gluster.org/mailman/listinfo/gluster-users" rel="noreferrer" target="_blank">http://lists.gluster.org/mailm<wbr>an/listinfo/gluster-users</a><br>
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