Hello everybody I just read that it's not recommended to run LVM on top of Softraid devices. Why is that? Looks like a perfect combination to me. However. Recently two (?!?) disks of a RAID5 device got bad sectors. The RAID array stopped immediately. Recreating the RAID with 'mkraid -R', I could save most of its data. I did move it away with 'pvmove'. Then - only 10 PE remaining on the bad PV - I decided to use 'pvmove -i' to remove those faulty PE's. That worked. But now my VG is in a silly state: because 'pvmove' touched the bad sectors, the RAID shut down, i.e. the whole PV (/dev/md/20) was no longer writeable nor readable. So pvmove couldn't write to /dev/md/20, not even LVM metadata in an intact area. Now /dev/md/20 is still registered as part of myVG. Aktivating it again with 'mkraid -R /dev/md20' I can pvdisplay on it and all metadata seems okay, but like before the 'pvmove -i'. Those 10 LE's are still on there. 'vgscan -v' outputs the following, somewhat silly message: vgscan -- removing "/etc/lvmtab" and "/etc/lvmtab.d" vgscan -- creating empty "/etc/lvmtab" and "/etc/lvmtab.d" vgscan -- reading all physical volumes (this may take a while...) vgscan -- scanning for all active volume group(s) first vgscan -- reading data of volume group "myVG" from physical volume(s) vgscan -- only found 6561 of 6551 LEs for LV /dev/myVG/data (2) vgscan -- ERROR "vg_read_with_pv_and_lv(): allocated LE of LV" can't get data of volume group "myVG" from physical volume(s) vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created vgscan -- WARNING: This program does not do a VGDA backup of your volume group That's exactly 10 LEs too much! I don't mind too much about the data in those 10 LEs. But I would like to be able to activate myVG again! How can I tell it, to forget about /dev/md/20? Do I have to use LVM2 tools? I've read through the mailing list, but didn't find the proper tool / command. Thanks for your help Markus _______________________________________________ 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/
