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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'>Hi,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'>For backup; I’m assuming you’d like to have exactly
the same FS on another mount point, try rsync. First time only will be slower
as you’re backing up everything, then the rest shall be incremental (rsyinc
will process the delta only); you could use the –av option.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'>For the second issue, slow copy; try to ftp instead (internally,
on the same host; ssh to the other lan then ftp get, dummy workaround, but
works sometimes, and normally faster than the standard cp).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'>Hope that help<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'>Best regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'>Karim Alkhayer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
ocfs2-users-bounces@oss.oracle.com [mailto:ocfs2-users-bounces@oss.oracle.com] <b>On
Behalf Of </b>Elia Pinto<br>
<b>Sent:</b> Sunday, May 02, 2010 2:53 PM<br>
<b>To:</b> Giovanni Sciortino<br>
<b>Cc:</b> ocfs2-users@oss.oracle.com<br>
<b>Subject:</b> Re: [Ocfs2-users] backup performance problem and snapshot<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>2010/4/22 Giovanni Sciortino <<a
href="mailto:giovannibattistasciortino@gmail.com">giovannibattistasciortino@gmail.com</a>><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Hi,<br>
i'm using ocfs2-1.4.4-1 on a cluster of 16 nodes, each node uses rhel 5.4
(kernel version 2.6.18-164.11.1) and it's connected to the other nodes with a
10Gb/s Ethernet.<br>
The ocfs cluster contains a Ocfs filesystem of 3 terabyte over a LVM logic
volume, I use this filesystem to store the home directories of users.<br>
I need to backup this filesystem but there is a very low transfer rate(it's
about 4MB/s) from the OCFS fs and the tape, i try to copy the data from
OCFS fs to a ext3 using cp and I obtain similar transfer rates.<br>
I use also another ocfs cluster of only two nodes in an another vlan of the
same network and I obtain a transfer rate from OCFS fylesystem to other
fylestem of 20 MB/s.<br>
<br>
Has anyone got a similar performance problems with OCFS clusters or some
suggestions in order to solve this problem?<br>
<br>
Does OCFS provide a snapshot feature in order to backup quickly the OCFS
filesystem?<o:p></o:p></p>
<div>
<p class=MsoNormal>He, this is a good question. But none answer, and not
because it is a simple question IMHO that could be require as an answer a
simple RTFM. BTW, in other distributed filesystem there exist a
"freeze" function for doing something as you asked, if also using
something like a snapshot lvm or hardware support, as you have observed
already.<br>
<br>
But probably there is no interest. <br>
<br>
Regards <o:p></o:p></p>
</div>
<blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;
margin-left:4.8pt;margin-right:0cm'>
<p class=MsoNormal><span style='color:#888888'>Giovanni Sciortino<br>
</span><br>
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<p class=MsoNormal><o:p> </o:p></p>
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