don't use snapshot. it sucks and the owners won't answer questions about it. > -----Original Message----- > From: John Craig [mailto:johncraig01@netscape.net] > Sent: Thursday, December 18, 2003 11:34 AM > To: linux-lvm@sistina.com > Subject: Unable to mount snapshot > > > Hi, > > I successfully created a snapshot of an active LV with XFS > filesystem, > and ldisplay shows it to be operating correctly. However, > when I try to > mount the snapshot, it says "wrong fs type, bad option, bad > superblock > on /dev/system/snap or too many mounted file systems" > > Can anyone help, or shed some light on why this is happening? > Is there a > workaround? > > The mount command was "mount -t xfs -o ro /dev/system/snap /mnt/snap" > > I am running SuSE 9.0 on x86-64, with kernel 2.4.21-149, lvm version > 1.0.7(mp-v6). I have a volume group running on 3 raid arrays, > each 0.9 > TB, for a total of 2.7 TB. It has 2 active LVs, one of them 2 TB, and > the other 500GB, leaving about 249GB unallocated. I created > the snapshot > with: > > lvcreate -L 200G -s -n snap /dev/system/adsdata > > As I said, the snapshot seems to be working correctly, but > when I bring > up the LVM tool in YAST, it shows the original LV, with > capacity 1.9 TB, > mounted, and the snapshot with a capacity of 1.9TB, > unmounted. When I > try to set the mount point for the snapshot, it says the capacity is > wrong, it needs to be <= 249GB. In other words, it seems to > be treating > it as if it were a regular LV, not a snapshot.. > > The listing of lvdisplay is: > --- Logical volume --- > LV Name /dev/system/snap > VG Name system > LV Write Access read only > LV snapshot status active destination for /dev/system/adsdata > LV Status available > LV # 3 > # open 0 > LV Size 2 TB > Current LE 16383 > Allocated LE 16383 > snapshot chunk size 64 KB > Allocated to snapshot 16.66% [33.29 GB/199.90 GB] > Allocated to COW-table 100 MB > Allocation next free > Read ahead sectors 1024 > Block device 58:2 > > > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ > _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
