hi, i gave up using lvm2 with debian sarge cause to a lot of problems concerning stability but now i gave it another try with my debian-etch box. but here problems with snapshots are still severe. -- used system: kernel: 2.6.18-3-686 (normal kernel version in etch) lvm version LVM version: 2.02.07 (2006-07-17) Library version: 1.02.08 (2006-07-17) Driver version: 4.7.0 -- problem: if a snapshot runs full (having attributes like this calling lvs: Swi-I- ) I of course try to remove it with lvremove: this will throw something like this on all consoles: kernel BUG at mm/slab.c:595! invalid opcode: 0000 [#1] EIP is at kmem_cache_free+0x29/0x6d esi: daa2f28c edi: d9439a88 ebp: 00036c68 esp: c593fdb0 Process lvremove (pid: 25402, ti=c593e000 task=c533aaa0 task.ti=c593e000) Stack: 15f529ae daa2f28c dd08dc68 dc86c94e dbf84220 00006d8d 00008000 daa2f240 ... EIP: [<c0156f55>] kmem_cache_free+0x29/0x6d SS:ESP 0068:c593fdb0 ... afterwards the snapshot is not removed but has the attributes sri--- when it is lvremoved a second time it seems to be away using "lvs" BUT a new snapshot with the same name fails: device-mapper: create ioctl failed: Device or resource busy device-mapper: reload ioctl failed: No such device or address Failed to suspend origin lvsanyback lvs gives for this recreated snapshot the attributes -wi-d- reboot of the maschine is the only way to help me out. ------ playing around with "dmsetup table" I learned that a snapshot normally has two entries (the normal name and the name-cow) when removing the invalid snapshot dmsetup table still shows the -cow snapshot entry and found no way to get rid of it without reboot. even dmsetup remove vgnam-snapshotname-cow only gave a "Device or resource busy" Btw reboot mostly did not work. the box has to be resetted and after start a manual fsck becomes necessary. --- question: Is this a "normal/known" behaviour?? Are there any workarounds besides reboot? kernel-issue? Should I try a vanilla kernel and if yes which one? --- p.s.: i have been using lvm1 for many years and I am somehow disappointed with lvm2 as there are a lot of stability problems and restrictions I never experienced in lvm1. And lvm1 seems to be not present in debian etch <sigh>! (sorry 4 nagging) -- ___________ __ ____ ___ / _ __ /_/ ( ( /|/| / / / /_/ / (_) /// / / __)_) / |/_/ / / / _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
