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<div class="moz-cite-prefix">On 08/08/2014 11:54 AM, <a class="moz-txt-link-abbreviated" href="mailto:hwh@sangfor.com">hwh@sangfor.com</a>
wrote:<br>
</div>
<blockquote cite="mid:2014080814245082808322@sangfor.com"
type="cite">
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charset=ISO-8859-1">
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<div><span></span>Is glusterfs bug ? i want to know <span
style="background-color: rgba(255, 255, 255, 0.8); color:
rgb(51, 51, 51); font-family: Tahoma, Arial; font-size: 12px;
line-height: 24px; text-align: justify;">whether</span><span
style="font-size: 10.5pt; line-height: 1.5; background-color:
window;"> have some way to avoid this split-brain?</span></div>
</blockquote>
Please explore client quorum and server quorum options in gluster.<br>
#gluster volume set help|grep quorum<br>
<br>
<blockquote cite="mid:2014080814245082808322@sangfor.com"
type="cite">
<div><br>
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align="left" size="1">
<div><span>
<div style="MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE:
10pt">
<div><a class="moz-txt-link-abbreviated" href="mailto:hwh@sangfor.com">hwh@sangfor.com</a></div>
</div>
</span></div>
<blockquote style="margin-top: 0px; margin-bottom: 0px;
margin-left: 0.5em;">
<div> </div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<div style="PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE:
12px;FONT-FAMILY:tahoma;COLOR:#000000; BACKGROUND: #efefef;
PADDING-BOTTOM: 8px; PADDING-TOP: 8px">
<div><b>From:</b> <a moz-do-not-send="true"
href="mailto:romeo.r@gmail.com">Roman</a></div>
<div><b>Date:</b> 2014-08-08 14:16</div>
<div><b>To:</b> <a moz-do-not-send="true"
href="mailto:hwh@sangfor.com">hwh@sangfor.com</a></div>
<div><b>CC:</b> <a moz-do-not-send="true"
href="mailto:gluster-users@gluster.org">gluster-users</a></div>
<div><b>Subject:</b> Re: Re: [Gluster-users] about
split-brain</div>
</div>
</div>
<div>
<div class="FoxDiv20140808142147062786">
<div dir="ltr">So try your tests again, but wait for
synchronization first. You can check the state of files on
servers with getfattr -d -m. -e hex
/path-to-file-on-gluster-server
<div>both should return 0x000000000000000000000000</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">2014-08-08 9:11 GMT+03:00 <a
moz-do-not-send="true" href="mailto:hwh@sangfor.com">hwh@sangfor.com</a>
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:hwh@sangfor.com" target="_blank">hwh@sangfor.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin: 0px 0px
0px 0.8ex; border-left-width: 1px; border-left-color:
rgb(204, 204, 204); border-left-style: solid;
padding-left: 1ex;">
<div>
<div><span></span>Yes, I do not wait for <span
style="font-size:10.5pt;line-height:1.5;background-color:window">synchronization
to complete.</span></div>
<div><br>
</div>
<hr style="width:210px;min-height:1px"
color="#b5c4df" align="left" size="1">
<div><span>
<div
style="MARGIN:10px;FONT-FAMILY:verdana;FONT-SIZE:10pt">
<div><a moz-do-not-send="true"
href="mailto:hwh@sangfor.com"
target="_blank">hwh@sangfor.com</a></div>
</div>
</span></div>
<blockquote style="margin-top: 0px; margin-bottom:
0px; margin-left: 0.5em;">
<div> </div>
<div style="border:none;border-top:solid #b5c4df
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<div
style="PADDING-RIGHT:8px;PADDING-LEFT:8px;FONT-SIZE:12px;FONT-FAMILY:tahoma;COLOR:#000000;BACKGROUND:#efefef;PADDING-BOTTOM:8px;PADDING-TOP:8px">
<div><b>From:</b> <a moz-do-not-send="true"
href="mailto:romeo.r@gmail.com"
target="_blank">Roman</a></div>
<div><b>Date:</b> 2014-08-08 13:53</div>
<div><b>To:</b> <a moz-do-not-send="true"
href="mailto:hwh@sangfor.com"
target="_blank">hwh@sangfor.com</a></div>
<div><b>CC:</b> <a moz-do-not-send="true"
href="mailto:gluster-users@gluster.org"
target="_blank">gluster-users</a></div>
<div><b>Subject:</b> Re: [Gluster-users] about
split-brain</div>
</div>
</div>
<div>
<div class="h5">
<div>
<div>
<div dir="ltr">Hello,
<div><br>
</div>
<div>Did you wait for synchronization to
complete before plugging second server
off? Usually it need 10-15 minutes.
Sometimes faster.</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">
2014-08-08 5:19 GMT+03:00 <a
moz-do-not-send="true"
href="mailto:hwh@sangfor.com"
target="_blank">hwh@sangfor.com</a>
<span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:hwh@sangfor.com"
target="_blank">hwh@sangfor.com</a>></span>:<br>
<blockquote class="gmail_quote"
style="margin: 0px 0px 0px 0.8ex;
border-left-width: 1px;
border-left-color: rgb(204, 204,
204); border-left-style: solid;
padding-left: 1ex;">
<div>
<div><span></span>hi:</div>
<div><br>
</div>
<div>I have a problem about
split-brain, <span
style="background-color:rgba(255,255,255,0.8);color:rgb(51,51,51);font-family:Tahoma,Arial;font-size:12px;line-height:24px;text-align:justify">details
as below:</span></div>
<div><span
style="background-color:rgba(255,255,255,0.8);color:rgb(51,51,51);font-family:Tahoma,Arial;font-size:12px;line-height:24px;text-align:justify"><br>
</span></div>
<div><img
src="cid:part12.01050004.09000308@redhat.com"
border="0"></div>
<div>PC1 and PC2 is AFR, stored a
file 1.txt</div>
<div><br>
</div>
<div>1. write "123" to 1.txt, then
1.txt in pc1 is same with 1.txt
in PC2, content is "123"</div>
<div><br>
</div>
<div>2. PC1 network disconnect,
write "45" to 1.txt, then <span
style="font-size:10.5pt;line-height:1.5;background-color:window"> content
of </span><span
style="font-size:10.5pt;line-height:1.5;background-color:window">1.txt
in pc1 is "123", </span></div>
<div><span
style="font-size:10.5pt;line-height:1.5;background-color:window"> </span></div>
<div><span
style="font-size:10.5pt;line-height:1.5;background-color:window">
</span><span
style="font-size:10.5pt;line-height:1.5;background-color:window">content
of </span><span
style="font-size:10.5pt;line-height:1.5;background-color:window">1.txt
in pc2 is "12345"</span></div>
<div><span
style="font-size:10.5pt;line-height:1.5;background-color:window"><br>
</span></div>
<div><span
style="font-size:10.5pt;line-height:1.5;background-color:window">3. </span><span
style="font-size:10.5pt;line-height:1.5;background-color:window">PC2
network disconnect, but PC1
network is good, </span><span
style="font-size:10.5pt;line-height:1.5;background-color:window">write
"67" to 1.txt,</span><span
style="font-size:10.5pt;line-height:1.5;background-color:window"> then </span><span
style="font-size:10.5pt;line-height:1.5;background-color:window"> content
of </span><span
style="font-size:10.5pt;line-height:1.5;background-color:window">1.txt
in pc1 is "12367", </span></div>
<div><span
style="font-size:10.5pt;line-height:1.5;background-color:window"> </span></div>
<div><span
style="font-size:10.5pt;line-height:1.5;background-color:window">
</span><span
style="font-size:10.5pt;line-height:1.5;background-color:window">content
of </span><span
style="font-size:10.5pt;line-height:1.5;background-color:window">1.txt
in pc1 is "12345"</span></div>
<div><br>
</div>
<div>4. so split brain occur</div>
<div><br>
</div>
<div><br>
</div>
<div>how glusterfs avoid this?
Have some ways to solve? this is
my questions. thank you</div>
<div><br>
</div>
<hr
style="width:210px;min-height:1px"
color="#b5c4df" align="left"
size="1"><span><font
color="#888888">
<div><span>
<div
style="MARGIN:10px;FONT-FAMILY:verdana;FONT-SIZE:10pt">
<div><a
moz-do-not-send="true"
href="mailto:hwh@sangfor.com" target="_blank">hwh@sangfor.com</a></div>
</div>
</span></div>
</font></span></div>
<br>
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</blockquote>
</div>
<br>
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<div><br>
</div>
-- <br>
Best regards,<br>
Roman.
</div>
</div>
</div>
</div>
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</blockquote>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
Best regards,<br>
Roman.
</div>
</div>
</div>
</blockquote>
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