Andrus, Brian Contractor
2011-Mar-31 09:22 UTC
[Lustre-discuss] Migrating so all MGS/MDTs on same node
All, We have a system that was grown from 3 separate lustre filesystems and I would like to set it up so they share mgs/mdt services from a single node (so the mount points on clients all use the same ''server''. I have tried doing a writeconf and changing the mgs nid on the osts and mdts, but when I try mounting the mdt on the new system (which already has one mgs/mdt mounted) I get: mount.lustre: mount /dev/VG_hamming/work_mdt at /mnt/lustre/work/mdt failed: Operation already in progress The target service is already running. (/dev/VG_hamming/work_mdt) But if I immediately try again, it works. Anyone know why this is? Running lustre_1.8.5 using ext4 rpms Brian Andrus ITACS/Research Computing Naval Postgraduate School Monterey, California voice: 831-656-6238 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lustre.org/pipermail/lustre-discuss/attachments/20110331/f74a4329/attachment.html
You can''t mount two MGS on the same node. The MGS NID has to be unique. On Thu, Mar 31, 2011 at 2:22 AM, Andrus, Brian Contractor <bdandrus at nps.edu>wrote:> All, > > > > We have a system that was grown from 3 separate lustre filesystems and I > would like to set it up so they share mgs/mdt services from a single node > (so the mount points on clients all use the same ?server?. > > > > I have tried doing a writeconf and changing the mgs nid on the osts and > mdts, but when I try mounting the mdt on the new system (which already has > one mgs/mdt mounted) I get: > > > > mount.lustre: mount /dev/VG_hamming/work_mdt at /mnt/lustre/work/mdt > failed: Operation already in progress > > The target service is already running. (/dev/VG_hamming/work_mdt) > > > > But if I immediately try again, it works. > > Anyone know why this is? > > > > Running lustre_1.8.5 using ext4 rpms > > > > Brian Andrus > > ITACS/Research Computing > > Naval Postgraduate School > > Monterey, California > > voice: 831-656-6238 > > > > _______________________________________________ > Lustre-discuss mailing list > Lustre-discuss at lists.lustre.org > http://lists.lustre.org/mailman/listinfo/lustre-discuss > >-- cliffw Support Guy WhamCloud, Inc. www.whamcloud.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lustre.org/pipermail/lustre-discuss/attachments/20110331/f558f32e/attachment.html