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<div class="moz-cite-prefix">On 03/30/2016 06:36 AM, Ravishankar N
wrote:<br>
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<blockquote cite="mid:56FB26AC.1010100@redhat.com" type="cite">
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<div class="moz-cite-prefix">On 03/30/2016 01:03 AM, Russell
Purinton wrote:<br>
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<blockquote
cite="mid:2F370201-DFA7-43A2-A61D-5D16B1CBCF64@gmail.com"
type="cite">
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Hi all, sorry for 2 threads today, but I felt like this deserved
a separate thread…
<div class=""><br class="">
</div>
<div class="">I was trying to replace my replica 2 volumes with
replica 3 arbiter 1 volumes… The new volumes though are 10x
slower on direct writes than their replica 2 counterparts. Im
wondering if this is to be expected or if I might have done
something wrong? I confirmed that no data is being written
into the arbiter bricks, just meta data.</div>
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<br>
It does look like a bug Russel. Another user had reported the same
behavior. I'll take a look and update.<br>
Thanks,<br>
Ravi<br>
<br>
</blockquote>
Hi,<br>
I've raised <a class="moz-txt-link-freetext" href="https://bugzilla.redhat.com/show_bug.cgi?id=1324004">https://bugzilla.redhat.com/show_bug.cgi?id=1324004</a> and
sent a fix @ <a class="moz-txt-link-freetext" href="http://review.gluster.org/#/c/13906/">http://review.gluster.org/#/c/13906/</a>.<br>
Once it gets accepted in master, I'll backport it to 3.7 branch. If
everything goes well, it should make it to the 3.7.11 release. Feel
free to test the patch if you like.<br>
<br>
Thanks,<br>
Ravi<br>
<br>
<blockquote cite="mid:56FB26AC.1010100@redhat.com" type="cite">
<blockquote
cite="mid:2F370201-DFA7-43A2-A61D-5D16B1CBCF64@gmail.com"
type="cite">
<div class=""> <br class="">
</div>
<div class=""> Here’s the tests I ran. I did the dd tests
multiple times with different file names, and they all had the
same speeds ….</div>
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<div class="">
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">[root@fs134 wtg002]# dd if=/dev/zero
of=test bs=1M count=100 oflag=direct</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">100+0 records in</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">100+0 records out</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">104857600 bytes (105 MB) copied, 9.49974
s, 11.0 MB/s</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">[root@fs134 wtg002]# cd ..</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">[root@fs134 home]# cd wtg001</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">[root@fs134 wtg001]# dd if=/dev/zero
of=test bs=1M count=100 oflag=direct</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">100+0 records in</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">100+0 records out</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">104857600 bytes (105 MB) copied, 0.888929
s, 118 MB/s</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">[root@fs134 wtg001]# gluster volume info
wtg001</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69); min-height: 14px;" class=""><br class="">
</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Volume Name: wtg001</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Type: Distributed-Replicate</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Volume ID:
53179cfe-9896-4c94-9f1d-01dd474e027e</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Status: Started</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Number of Bricks: 2 x 2 = 4</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Transport-type: tcp</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Bricks:</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick1: xs141:/brick1/wtg001p0r0</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick2: xs138:/brick1/wtg001p0r1</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick3: xs139:/brick1/wtg001p1r0</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick4: xs140:/brick1/wtg001p1r1</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Options Reconfigured:</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">nfs.disable: on</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">performance.readdir-ahead: on</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">[root@fs134 wtg001]# gluster volume info
wtg002</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69); min-height: 14px;" class=""><br class="">
</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Volume Name: wtg002</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Type: Distributed-Replicate</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Volume ID:
410b67ad-bc1e-473b-b98f-ad431d7c9831</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Status: Started</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Number of Bricks: 2 x 3 = 6</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Transport-type: tcp</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Bricks:</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick1: xs141:/brick1/wtg001d2r0</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick2: xs138:/brick1/wtg001d2r1</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick3: xs139:/brick1/wtg001d2ra</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick4: xs139:/brick1/wtg001d3r0</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick5: xs140:/brick1/wtg001d3r1</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Brick6: xs141:/brick1/wtg001d3ra</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">Options Reconfigured:</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">nfs.disable: on</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">performance.readdir-ahead: on</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">[root@fs134 wtg001]# mount | grep wtg</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">0:/wtg001 on /home/wtg001 type
fuse.glusterfs
(rw,default_permissions,allow_other,max_read=131072)</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">0:/wtg002 on /home/wtg002 type
fuse.glusterfs
(rw,default_permissions,allow_other,max_read=131072)</div>
<div style="margin: 0px; line-height: normal; color: rgb(69,
69, 69);" class="">[root@fs134 wtg001]#</div>
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<img moz-do-not-send="true"
src="http://t.sidekickopen04.com/e1t/o/5/f18dQhb0S7ks8dDMPbW2n0x6l2B9gXrN7sKj6v4LN9-W2z8_hM5wLWr-N7dSKlbd3_yKW6jq8hk1k1H6H0?si=6102096971038720&pi=E9747E1A-C2BC-4FFB-B159-E8BC5ADEC31B"
style="display:none!important" height="1" width="1"> <br>
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