search for: xfs_freeze

Hi, I discovered that SGI XFS for Linux har a utility called xfs_freeze, which freezes the filsystem and makes sure that the filesystem is consistant. It is a bit like a mount -o remount,ro but it does not fail when applications have open files. When we take snapshots of our XFS volume, we do "xfs_freeze -f /mnt/foo; lvcreate -s /dev/vg_foo/bar /dev/vg_foo/bar-sn...

...snapshot to my LVM2 + XFS system SNAPNAME=`date+%Y.%m.%d_%H.%M.%S` lvcreate -v -L10M -s -n $SNAPNAME /dev/lvmgroup1/home xfs_freeze -u /home mkdir /home/@GMT-$SNAPNAME mount /dev/mapper/lvmgroup1-$SNAPNAME /home/@GMT-$SNAPNAME -onouuid,ro 4 - everything seems to be fine, but when i open previous version window under WinXP, it's blank ... so what else, i have no more idea, can anyone help me? cheers, Roli

I don't know if this was present (maybe not?) when the script was written, but the script for taking a snapshot in the instructions for shadow_copy: that looks like this: ---- xfs_freeze -f /home/ lvcreate -L10M -s -n $SNAPNAME /dev/Home/lvol0 xfs_freeze -u /home/ mkdir /home/shadow_share/@GMT-$SNAPNAME mount /dev/Home/$SNAPNAME \ /home/shadow_share/@GMT-$SNAPNAME -onouuid,ro ---- Causes an, apparently, well-known system hang when you do the lvcreate. The workaround is to...

Hi people, im trying to use shadow copy. Is anyone currently using it? Im following the oficial howto in the samba home page and when i do the xfs_freeze the system totally hangs, any ideas? I know this isn't a specific samba question... I know how to use LVM and snapshots.. the samba how to is accurate? Tnxs in advance.

Hi all, I am running Xen 3.2-1 / 2.6.18 on Debian Etch (Dom0). I setup a Dom0 with several DomUs (Linux). Each DomU disk is a LV partition. I have been seeing a few mails about backups and LVM and just wanted to make sure that what I am doing is correct. Each DomU with a database has a cron that dumps the db with mysqldump. Later on, Dom0 will do an LVM Snapshot of all DomUs and then do a

...> > How do you do the snapshot? > > > > lvcreate -s > > No need to freeze the filesystem while creating the snapshot to ensure a > consistent filesystem on the snapshot ? Yes, but this is handled internally by LVM and ext3 when the snapshot is created. > (xfs has a xfs_freeze function that does just this) In fact I was just discussing this with an XFS developer and this is a source of problems for them because if you do xfs_freeze before doing the LVM snapshot it will deadlock. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Cana...