Hi All, I'm having a weird problem with LVM2 on top of Linux software RAID-1. I've installed Debian Sarge recently, using the new Debian Installer and I've configured it with LVM2 on top of RAID-1. I'm running the 2.6.8-1 kernel from the Sarge installer with their initrd. I've got two 80GB SATA hard drives, partitioned as in [1]. I've got /boot on it's own RAID-1 device (md0 = sda1 + sdb1), becuase GRUB didn't support kernel on an LV (and still doesn't without patches AFAIK). Then I've got md1 (= sda2 + sdb2) and md2 (= sda3 + sdb3) combined to for a volume group, vg0. Then I've got md3 (= sda4 + sdb4) which is used by vg1. I've created all my logical volumes including root and swap in vg0. In vg1 I've got a single LV using up the entire VG. So here's the problem: When I boot my system, everything works great, except that md3 comes up degraded, missing sda4. dmesg contains the following: > devfs_mk_dir: invalid argument.<4>devfs_mk_dev: could not append to parent for /disc repeated 112 times right at the top (I don't think this has anything to do with it, but I don't know), and: > md: md3 stopped. > md: bind<sdb4> > md: could not lock unknown-block(8,4). > md: md_import_device returned -16 > raid1: raid set md3 active with 1 out of 2 mirrors > md: md0 stopped. > md: bind<sdb1> > md: bind<sda1> > raid1: raid set md0 active with 2 out of 2 mirrors It doesn't mention md1 and md2. When I try to hot-add sda4 into md3 I get more "could not lock" errors: > lbarbuto@saturn:~$ sudo mdadm /dev/md3 -a /dev/sda4 > md: trying to hot-add unknown-block(8,4) to md3 ... > md: could not lock unknown-block(8,4). > md: md_import_device returned -16 If I remove the LV from vg1, I can now hot-add the RAID member device back in and it happily starts syncing. So, I'm obviously not an expert on this stuff, but I assume that LVM is scanning devices on boot and taking over sda4 before the RAID starts. So I tried adding a filter to /etc/lvm/lvm.conf: > filter = [ "a|^/dev/md|", "r|.*|" ] To ignore all but md devices --- this makes no difference. So now I am stuck and I don't know what else to try. Can someone give me some advice? This is the third list I've tried posting on, sorry if you've read this before. [1] partitions > lbarbuto@saturn:~$ cat /proc/partitions > major minor #blocks name > > 8 0 117220824 sda > 8 1 32098 sda1 > 8 2 39062047 sda2 > 8 3 39062047 sda3 > 8 4 39062047 sda4 > 8 16 117220824 sdb > 8 17 32098 sdb1 > 8 18 39062047 sdb2 > 8 19 39062047 sdb3 > 8 20 39062047 sdb4 > 9 1 39061952 md1 > 9 2 39061952 md2 > 9 0 32000 md0 > 9 3 39061952 md3 > 253 1 4194304 dm-1 > 253 2 4194304 dm-2 > 253 3 1048576 dm-3 > 253 4 4194304 dm-4 > 253 5 2097152 dm-5 > 253 6 4194304 dm-6 > 253 7 16777216 dm-7 > 253 8 16777216 dm-8 > 253 9 24641536 dm-9 Thanks, -- Lucas _______________________________________________ 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/
