Hi, I firstly installed ubuntu server 12.04 and set up LVM on top of RAID1. After several days the system wasn't able to boot. RAID array was broken. Then I found this bug on your page: http://neil.brown.name/blog/20120615073245 Then I decided to install newest ubuntu alternate which provides 3.5.0-5 version of kernel. After instalation's very first reboot I got the same messages as previously. I also installed linux-source-3.5.0 to verify the bug was fixed in this version of kernel. I can provide you root access if you want to check anything on my server. Thank You Martin --- # uname -a Linux rat 3.5.0-5-generic #5-Ubuntu SMP Tue Jul 17 16:17:55 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux linux-source-3.5.0/drivers/md/md.c: ... static int md_notify_reboot(struct notifier_block *this, unsigned long code, void *x) { struct list_head *tmp; struct mddev *mddev; int need_delay = 0; for_each_mddev(mddev, tmp) { if (mddev_trylock(mddev)) { if (mddev->pers) __md_stop_writes(mddev); mddev->safemode = 2; mddev_unlock(mddev); } need_delay = 1; } /* * certain more exotic SCSI devices are known to be * volatile wrt too early system reboots. While the * right place to handle this issue is the given * driver, we do want to have a safe RAID driver ... */ if (need_delay) mdelay(1000*1); return NOTIFY_DONE; } ... # update-grub error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. Generating grub.cfg ... error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. Found linux image: /boot/vmlinuz-3.5.0-5-generic Found initrd image: /boot/initrd.img-3.5.0-5-generic error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. Found linux image: /boot/vmlinuz-3.5.0-5-generic Found initrd image: /boot/initrd.img-3.5.0-5-generic error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. error: unknown LVM metadata header. Found memtest86+ image: /boot/memtest86+.bin done # mdadm -Evvvvs mdadm: No md superblock detected on /dev/dm-3. mdadm: No md superblock detected on /dev/dm-2. mdadm: No md superblock detected on /dev/dm-1. mdadm: No md superblock detected on /dev/dm-0. mdadm: No md superblock detected on /dev/md/0. mdadm: No md superblock detected on /dev/sdb5. /dev/sdb2: MBR Magic : aa55 Partition[0] : 683800576 sectors at 2 (type 8e) /dev/sdb1: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : dec31ddc:13aa86e0:d0635ca8:b630b4a5 Name : rat:0 (local to host rat) Creation Time : Fri Jul 20 23:11:14 2012 Raid Level : raid1 Raid Devices : 2 Avail Dev Size : 292704256 (139.57 GiB 149.86 GB) Array Size : 146352000 (139.57 GiB 149.86 GB) Used Dev Size : 292704000 (139.57 GiB 149.86 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : a9e91e4b:550235d5:de6f6a16:44d74be1 Update Time : Sat Jul 21 16:06:32 2012 Checksum : c91e067d - correct Events : 26 Device Role : Active device 1 Array State : AA ('A' == active, '.' == missing) /dev/sdb: MBR Magic : aa55 Partition[0] : 292966400 sectors at 2048 (type fd) Partition[1] : 683800578 sectors at 292970494 (type 05) mdadm: No md superblock detected on /dev/sda5. /dev/sda2: MBR Magic : aa55 Partition[0] : 683800576 sectors at 2 (type 8e) /dev/sda1: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : dec31ddc:13aa86e0:d0635ca8:b630b4a5 Name : rat:0 (local to host rat) Creation Time : Fri Jul 20 23:11:14 2012 Raid Level : raid1 Raid Devices : 2 Avail Dev Size : 292704256 (139.57 GiB 149.86 GB) Array Size : 146352000 (139.57 GiB 149.86 GB) Used Dev Size : 292704000 (139.57 GiB 149.86 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : 458f63c4:1a882d4d:1ce3c46c:b0da0244 Update Time : Sat Jul 21 16:06:32 2012 Checksum : 736ca887 - correct Events : 26 Device Role : Active device 0 Array State : AA ('A' == active, '.' == missing) /dev/sda: MBR Magic : aa55 Partition[0] : 292966400 sectors at 2048 (type fd) Partition[1] : 683800578 sectors at 292970494 (type 05) -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
