Glad that helped! The need for trim on the local file system when using SSD for data storage is one I hadn't considered. Let us know if that helps in your environment. We'll be sure to include that in the tuning documentation.
Thanks, Michael On Thu, Aug 11, 2011 at 12:49 PM, Kshitij Mehta <[email protected]> wrote: > You are right, I tried to mount the client, and not the local file system > on the server. > Just fyi, my ssd storage might not be trimming deleted files underneath, > because of which the I/O bandwidth dropped. Hence, we are trying to mount it > with the discard option set. > > Thanks, > Kshitij > > > On 08/11/2011 11:36 AM, Michael Moore wrote: > > Hi Kshitij, > > When you say you are running 'mount -o discard' is that against the local > file system that mounts the SSD block device on the servers or the pvfs2 > mount on the client? Based on your mention of SSD I believe you'll want to > mount the local file system on the server with those options. > > From the client mount perspective we don't support the discard option. If > this is what you're interested in could you explain the use case or what the > expected behavior of that functionality would be? > > Michael > > On Thu, Aug 11, 2011 at 12:25 PM, Kshitij Mehta <[email protected]> wrote: > >> I have setup pvfs2 over ssd storage, and saw that >> 'mount -o discard ..' fails with the following error: 'mount: wrong fs >> type, bad option, bad superblock ..' >> >> Does that mean pvfs2 does not support the discard option? >> >> 1. In case 'discard' is supported, how do I enable it? 2. Has anyone >> setup pvfs2 over ssd and run trim or fstrim over it successfully? Running >> 'fstrim' gives me an 'Inappropriate ioctl for device' error. >> >> Thanks, >> Kshitij >> _______________________________________________ >> Pvfs2-users mailing list >> [email protected] >> http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users >> > > >
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