Re: [gentoo-server] Issues with GFS2.

I noticed that problem once as well, but it was while issuing the "rm *" command on the shared space from cssh to 5 machines at once, which seems more understandable that you'd see a problem doing it that way. However, it should be able to handle that and I haven't been able to reproduce it yet, so I couldn't track down what actually caused it. I can send you my config details if you'd like to compare.

Brian

"Todd M. Hébert" <todd@iil.ie>:
> Thanks Brian, there was some great info.. and even greater ebuilds.
>
> I've gotten things working.. but with some caveats. Locking isn't working
> properly.
>
> I can get filesystems mounted on both servers just fine.. I can copy a file
> into the shared space on one server, copy it out on the other, even delete
> them. (copy from a, delete from b, copy from b, delete from a.)
>
> BUT... as soon as I copy in several files and issue a rm /<mount-point>/*
>
> everything stops working for that mount. (Other mounts will continue to
> work until a similar command is issued)
>
> It appears that anything trying to access a LIST of files causes a serious
> problem, and everything related to the affected mount just freezes.
>
> The /var/log/messages file shows that it freezes because it's waiting for
> locks on the files to clear.
>
> I'm getting no compiling errors.
>
> Has anyone seen similar problems or even found a way to fix this?
>
> Thanks in advance for any further help!
>
> --Todd
>
> (P.S. please excuse the company information at the bottom.. it's required
> under Irish law.)
>
> Brian Kroth wrote:
>> I have also been dealing with this. There aren't any gfs2 tools in
>> portage yet, and as I'm doing a new install I didn't want to go with an
>> "old" gfs, especially since the kernel module doesn't work with newer
>> kernels anymore. I ended up writing my own ebuilds. Have a look at these
>> links below for more info. The offsite link in the forum post is more up
>> to date (better init scripts). If you're upgrading from gfs please let me
>> know how that goes with the new ebuilds. I think they should work just
>> fine, but I haven't tested it yet.
>> Thanks,
>> Brian
>> http://bugs.gentoo.org/show_bug.cgi?id=184850
>> http://forums.gentoo.org/viewtopic-p-4732772.html#4732772
>> https://mywebspace.wisc.edu/bpkroth/web/gentoo/fs-cluster-ebuilds/fs-cluster_ebuilds.tar.bz2
>> BTW, I long time ago I posted a question regarding OCFS2 vs. GFS2. In my
>> research I decided OCFS2 didn't have all the features I wanted (quotas,
>> acls, cluster flock, etc.) but I did run some simple benchmarks of how
>> they respond with multiple clients. Basically just "iozone -a" on 5
>> machines at
>> once. Here's another link in case anyone's interested. Sorry for the
>> format, but I had a student make them "pretty" and he used MS Excel 2007.
>> https://mywebspace.wisc.edu/bpkroth/web/fs-cluster/fs-cluster-iozone-results.xls
>> "Todd M. Hébert" <todd@iil.ie>:
>>> Hello all, I'm hoping someone has dealt with this by now.
>>>
>>> The kernel seems only to support GFS2, but the user-space tools seem to
>>> only support GFS (GFS1?)
>>> So.. I am able to format GFS filesystems in userspace, but I cannot mount
>>> them because the kernel doesn't understand them. (and the separate GFS
>>> kernel module will not compile,.. maybe because the one in the kernel
>>> source that handles GFS2 uses some of the same necessary bits?)
>>>
>>> I need to find a way to get either GFS or GFS2 working properly. (I'd
>>> think GFS2 would be preferable.)
>>>
>>> I'm using the 2007.0 profile, and I already have the cluster elements
>>> configured, and only need to format & mount the filesystems at this
>>> point.
>>>
>>> Can anyone point me to a resource that will help me get this last bit
>>> sorted?
>>>
>>> Thanks,
>>>
>>> --Todd
>>>
>>> (P.S. Pardon anything below this line.. it is required under Irish law.
>>> --TMH)
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>
>
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