Hi, I am running what was Debian Sarge but has the new 2.6.16.9 kernel. I have made a few patches to the kernel (to add an Areca RAID driver and a few hardware sensors) but nothing in the device-mapper areas. I use the snapshots capability in LVM to snapshot the client's userdisk volume when backing it up. Until a couple days ago, I was running: Wombat:~# uname -a Linux Wombat 2.6.16.9.rwl7 #1 Tue May 16 20:25:14 BST 2006 i686 GNU/Linux Wombat:~# lvm version LVM version: 2.01.04 (2005-02-09) Library version: 1.01.00-ioctl (2005-01-17) Driver version: 4.4.0 Wombat:~# and everything ran fine. A few days ago, I saw an e-mail from Alasdair on this mailing list saying that kernels 2.6.16 onwards should be using the later userspace tools. Following this, I downloaded and compiled the latest device mapper library (libdevmapper 1.02) and LVM tools (2.02.06). When I installed them on the machine and re-ran the backup script, I got an error from lvcreate when I tried to make the snapshot which I did not get before. I saw that Patrick Honing also reported this error on 29/5/06 on this mailing list, but couldn't see any reply. For me, this failure is 100% repeatable. Can anyone help shed light on this? If you need any more information then please let me know and I will send it in. My current option seems to be to drop back to the older 2.01.04 lvm and 1.01 dmapper but given Alasdair's mail, this seems to be risky. The full shell trace is below. Wombat:~# uname -a Linux Wombat 2.6.16.9.rwl7 #1 Tue May 16 20:25:14 BST 2006 i686 GNU/Linux Wombat:~# lvm version LVM version: 2.02.06 (2006-05-12) Library version: 1.02.07 (2006-05-11) Driver version: 4.5.0 Wombat:~# lvs LV VG Attr LSize Origin Snap% Move Log Copy% backupimage clientstore -ri-ao 60.00G root clientstore -wi-ao 5.00G userdisk clientstore -wi-ao 60.00G Wombat:~# vgs VG #PV #LV #SN Attr VSize VFree clientstore 1 3 0 wz--n- 148.98G 23.98G Wombat:~# pvs PV VG Fmt Attr PSize PFree /dev/sda2 clientstore lvm2 a- 148.98G 23.98G Wombat:~# lvcreate -L10G -n snapdisk -s /dev/clientstore/userdisk LV clientstore/snapdisk in use: not deactivating Couldn't deactivate new snapshot. Wombat:~# lvs LV VG Attr LSize Origin Snap% Move Log Copy% backupimage clientstore -ri-ao 60.00G root clientstore -wi-ao 5.00G snapdisk clientstore -wi-a- 10.00G userdisk clientstore -wi-ao 60.00G Wombat:~# Many thanks in advance, Roger _______________________________________________ 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/
