Description of problem: In kernels 2.4.20-8 and 2.4.20-9, LVM snapshots no longer work. They did work fine in RHL8.0. Version-Release number of selected component (if applicable): lvm-1.0.3-12 kernel-2.4.20-[89] How reproducible: Every time Steps to Reproduce: 1. Create LVM LV 2. Create LVM snapshot with: lvcreate --size 100M --snapshot --name snap1 /dev/vg01/wwwdata 3. Try to mount/use snapshot block device: # mount /dev/vg01/snap1 /mnt/snapshot mount: block device /dev/vg01/snap1 is write-protected, mounting read-only mount: wrong fs type, bad option, bad superblock on /dev/vg01/snap1, or too many mounted file systems Additional info: LVM snapshots are a very important feature and are often used. Some would argue that they are the most commonly used and most useful feature of LVM (given that live -- while mounted -- resizes don't work yet). We use LVM snapshots to get consistent backups. This seems a quite high priority problem to get fixed ASAP.
Absolutely agree. Very critical for backup consistency.
See my attachment in https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=84278 for a fix, don't kill me if it doesnt work for you. I'm using it on a production box for mysql backups and it's been alright so far.
Stephen, can you comment on how RH views the severity of this bug, and if a fix for this will make into the next RHL9 errata kernel?
This has also been reported as https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=88115 My backup devices are external USB disk with OHCI driver, for which I am forced to upgrade this RH8.0 installation from 2.4.18-14 in order to avoid a system freeze (described in https://rhn.redhat.com/errata/RHSA-2003-135.html). The current inability to mount snapshots is therefore of critical importance to me.
*** This bug has been marked as a duplicate of 84278 ***
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.