Jim: The documentation link that I sent doesn't seem to work. Instead:
go to www.orangefs.org and click on the html link for the install guide, about midway down the page. the install guide has a section on setting up a client and in section 3.3 is the description of the pvfs2tab file. Becky On Tue, Jul 31, 2012 at 3:26 PM, Becky Ligon <[email protected]> wrote: > Jim: > > To generate a new config file, issue the command: > > /opt/pvfs2/bin/pvfs2-genconfig <config file name> > > You will be asked a set of questions regarding your installation. This > utility may not provide everything you need, just depends on your setup. > To help you, I will forward you a copy of our production conf file. You > can compare it to your own needs and modify the new conf file as needed. > After you create a new conf file, I would be happy to review it for you. > > I'm not sure how your clients have started without a proper pvfs2tab file, > unless you have the appropriate info in your fstab file. The mount info > could be in either file. I will send you a copy of our production pvfs2tab > file as an example. > > The link below will describe how to create the entries in the > pvfs2tab/fstab file. > > > http://www.pvfs.org/cvs/pvfs-2-8-branch-docs/doc//pvfs2-quickstart/pvfs2quickstart.php#subsec:client > > Thanks for giving 2.8.6 a try! Let me know how it goes! > > Becky > > > > On Tue, Jul 31, 2012 at 2:14 PM, Jim Kusznir <[email protected]> wrote: > >> I've got 2.8.6 ready to install, but I've got 15 users on there and a >> full cluster at the moment, so I can't intentionally reboot it. If it >> crashes on me today, I'll take the opportunity to update everything as >> soon as it comes back and reboot it again. Otherwise, I'll try early >> tomorrow morning to load and reboot. >> >> Also, you previously mentioned my pvfs2 server configuration file >> format was out of date. Can you suggest a new config file format to >> use based on what I gave you? Also, I've never had a pvfs2tab file on >> my clients, and my attempts to create one so far have failed. It >> seems I don't know the proper syntax, and I haven't found a >> sufficiently clear documentation on that either. It has worked for ~4 >> years without one, but... >> >> --Jim >> >> On Tue, Jul 31, 2012 at 10:03 AM, Becky Ligon <[email protected]> wrote: >> > Jim: >> > >> > Next time this happens, can you attach to the pvfs2-client-core process >> > using gdb and see if you can tell in which function it seems to >> spinning? >> > Also, you can try turning on client debugging, so we can see what the >> client >> > core is doing. To turn on debugging dynamically, issue the following: >> > >> > echo "all" > /proc/sys/pvfs2/client-debug >> > >> > With the CPU so high, the client-core may or may not see the change in >> > gossip_debug settings. If it does, then a lot of output will be >> generated! >> > Before you reboot your system, make a copy of the client log and send >> that >> > to me, along with any information you might get from gdb. >> > >> > When you can, please try using 2.8.6 on your head node and see if you >> can >> > reproduce the problem. >> > >> > Thanks, >> > Becky >> > >> > >> > On Tue, Jul 31, 2012 at 12:45 PM, Jim Kusznir <[email protected]> >> wrote: >> >> >> >> Unfortunately, the pvfs2-client.log is truncated and reopened on >> >> reboot (eg, all entries are lost). Already checked. Also, I didn't >> >> see anything in /var/log/messages (I looked there when the problem >> >> started mounting). There appears to be no "paper trail" of this >> >> incident, which is why its been so hard to track down. >> >> >> >> --Jim >> >> >> >> On Mon, Jul 30, 2012 at 1:18 PM, Becky Ligon <[email protected]> >> wrote: >> >> > Jim: >> >> > >> >> > Please send the pvfs2-client.log from your head node and the >> >> > /var/log/messages just before you rebooted. I'm thinking that the >> high >> >> > CPU >> >> > utilization is coming from a failed operation that wasn't cleaned up >> >> > properly. >> >> > >> >> > As I noted in my previous email, 2.8.6 addressed some of these high >> CPU >> >> > utilization issues. It would be worth while for you to apply 2.8.6 >> to >> >> > your >> >> > head node and see if this particular situation comes up again. >> >> > >> >> > Becky >> >> > >> >> > >> >> > On Mon, Jul 30, 2012 at 3:03 PM, Jim Kusznir <[email protected]> >> wrote: >> >> >> >> >> >> I think I caught a pvfs2-induced crash in progress on 2.8.5. I >> don't >> >> >> have a crash file, and it looks like its still in the process of >> >> >> bringing down my head node. Symptoms were: >> >> >> >> >> >> Someone was doing an scp from (or to, not sure which, but probably >> >> >> from) the pvfs2 volume. At some point, CPU usage spikes on the head >> >> >> node. Top shows both the scp and the pvfs2-client-core using 100% >> of >> >> >> a core. The load avg just keeps going up and up. About 29, I lost >> >> >> responsiveness from the server. CPU load shows 62.5% iowait, 25% >> >> >> system, 12.5% idle, all others 0. The only processes of note >> running >> >> >> is the one SCP and the pvfs2 process. >> >> >> >> >> >> >> >> >> My machine has now gone unresponsive; I'll probably need to go hit >> the >> >> >> front panel reset button. When it comes back up, I doubt there will >> >> >> be any written logs of what happened. Hence, why I can never catch >> >> >> the logs of the crash; it *thinks* its working until the system goes >> >> >> non-responsive and resets. >> >> >> >> >> >> --Jim >> >> > >> >> > >> >> > >> >> > >> >> > -- >> >> > Becky Ligon >> >> > OrangeFS Support and Development >> >> > Omnibond Systems >> >> > Anderson, South Carolina >> >> > >> >> > >> > >> > >> > >> > >> > -- >> > Becky Ligon >> > OrangeFS Support and Development >> > Omnibond Systems >> > Anderson, South Carolina >> > >> > >> > > > > -- > Becky Ligon > OrangeFS Support and Development > Omnibond Systems > Anderson, South Carolina > > > -- Becky Ligon OrangeFS Support and Development Omnibond Systems Anderson, South Carolina
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