<div>Some days before it took me more than 10 hours to fsck a 4TB OST!!<br><br></div>
<div class="gmail_quote">2009/9/4 Adam <span dir="ltr"><<a href="mailto:adam@sharcnet.ca">adam@sharcnet.ca</a>></span><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">What if there *are* serious file-system problems? We're half-way into<br>CPU hour 7 of our e2fsck run on a 8TB OST with ~274 million inodes:<br>
<br>PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND<br>##### root 25 0 15.1g 1.1g 772 R 100 57.4 472:07.67 e2fsck<br><br>If it finishes within my lifetime I'll post how long it takes.<br><br>
Thanks,<br><font color="#888888">Adam<br></font>
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<div class="h5"><br>On Wed, 2009-07-29 at 04:35 -0600, Andreas Dilger wrote:<br>> On Jul 29, 2009 15:16 +0800, huangql wrote:<br>> > We want to run e2fsck on OSTs to finish them. However, as to the<br>> > running time, we should estimate how long it takes to run e2fsck on<br>
> > OSTs. We hopefully to know what elements to affect the running time like<br>> > the size of OST, the average size of files and so on. Can you give us<br>> > the tips for it? And I hope to receive you email as soon as possible.<br>
><br>> The variables in your question are numerous:<br>> - size of the filesystem<br>> - number of inodes<br>> - number of allocated blocks<br>> - distribution of the above on the disk<br>> - speed of the disks<br>
> - speed of the CPU<br>> - amount of RAM on server<br>><br>> Reasonable e2fsck times (without serious filesystem problems) might<br>> take between 5 minutes and 2 hours.<br>><br>> Cheers, Andreas<br>
> --<br>> Andreas Dilger<br>> Sr. Staff Engineer, Lustre Group<br>> Sun Microsystems of Canada, Inc.<br>><br>> _______________________________________________<br>> Lustre-discuss mailing list<br>> <a href="mailto:Lustre-discuss@lists.lustre.org">Lustre-discuss@lists.lustre.org</a><br>
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