On Oct 31, 2002 14:57 -0800, Jim King wrote: > I'm trying to set up snapshots on my LVM volumes sort of like the way > Network Appliance does it... with hourly rotating snapshots. The obvious > problem is that the snapshots do not dynamically size. This is a real > issue, because snapshots no longer protect us from someone (for example) > deleting a huge directory accidently. > > To solve that I'm trying to figure a way to have them dynamically size > -- with a script that checks how full they are and grows them > automatically if they start to fill up. > > Problem: > -------- > If I do e2fsadm on a normal LVM volume it works, but if I do e2fsadm on > a snapshot I get something like: > > /sbin/e2fsck: Permission denied while trying to open > /dev/data1/.mer_dev.hourly.3 > You must have r/w access to the filesystem or be root > > Now I'm logged in as root, and the filesystem is unmounted. Ideas? I'm > suspecting it's because the snapshot is ro, but is there a way to work > around this? The LVM snapshot is the whole filesystem (with only the parts that actually change being written to the snapshot LV) - no need to change the filesystem size at all. All you need to change is the LV size. Cheers, Andreas -- Andreas Dilger http://www-mddsp.enel.ucalgary.ca/People/adilger/ http://sourceforge.net/projects/ext2resize/ _______________________________________________ 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/
