Hi All, I created a RAID-1 volume on Linux 2.4.18 by creating the volume in degraded mode, then hot-adding the second disk. It syncs up fine, but every time I reboot, it comes back in degraded mode. Can someone help me figure out what I'm doing wrong? (it looks like I've got two RAID's, both of which contain /dev/hde1, and I really don't quite understand what's happened). Here is the /etc/raidtab: raiddev /dev/md1 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 persistent-superblock 1 chunk-size 4 device /dev/hde1 raid-disk 0 device /dev/hdg1 raid-disk 1 (device /dev/hdg1 was set as failed disk during build, and then switched to raid-disk before raidhotadd) Here is the section of /var/log/messages from when it boots: Jun 5 00:00:58 celeri kernel: md: raid1 personality registered as nr 3 Jun 5 00:00:58 celeri kernel: md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 Jun 5 00:00:58 celeri kernel: md: Autodetecting RAID arrays. Jun 5 00:00:58 celeri kernel: [events: 00000014] Jun 5 00:00:58 celeri kernel: md: autorun ... Jun 5 00:00:58 celeri kernel: md: considering hde1 ... Jun 5 00:00:58 celeri kernel: md: adding hde1 ... Jun 5 00:00:58 celeri kernel: md: created md1 Jun 5 00:00:58 celeri kernel: md: bind<hde1,1> Jun 5 00:00:58 celeri kernel: md: running: <hde1> Jun 5 00:00:58 celeri kernel: md: hde1's event counter: 00000014 Jun 5 00:00:58 celeri kernel: md: RAID level 1 does not need chunksize! Continuing anyway. Jun 5 00:00:58 celeri kernel: md1: max total readahead window set to 124k Jun 5 00:00:58 celeri kernel: md1: 1 data-disks, max readahead per data-disk: 124k Jun 5 00:00:59 celeri kernel: raid1: device hde1 operational as mirror 0 Jun 5 00:00:59 celeri kernel: raid1: md1, not all disks are operational -- trying to recover array Jun 5 00:00:59 celeri kernel: raid1: raid set md1 active with 1 out of 2 mirrors Jun 5 00:00:59 celeri kernel: md: recovery thread got woken up ... Jun 5 00:00:59 celeri kernel: md1: no spare disk to reconstruct array! -- continuing in degraded mode Jun 5 00:00:59 celeri kernel: md: recovery thread finished ... Jun 5 00:00:59 celeri kernel: md: updating md1 RAID superblock on device Jun 5 00:00:59 celeri kernel: md: hde1 [events: 00000015]<6>(write) hde1's sb offset: 40202560 Jun 5 00:00:59 celeri kernel: md: ... autorun DONE. Here is the section during a raidhotadd /dev/md1 /dev/hdg1: Jun 5 22:37:08 celeri kernel: md: trying to hot-add hdg1 to md1 ... Jun 5 22:37:08 celeri kernel: md: bind<hdg1,2> Jun 5 22:37:08 celeri kernel: RAID1 conf printout: Jun 5 22:37:08 celeri kernel: --- wd:1 rd:2 nd:2 Jun 5 22:37:08 celeri kernel: disk 0, s:0, o:1, n:0 rd:0 us:1 dev:hde1 Jun 5 22:37:08 celeri kernel: disk 1, s:0, o:0, n:1 rd:1 us:1 dev:[dev 00:00] Jun 5 22:37:08 celeri kernel: disk 2, s:0, o:0, n:0 rd:0 us:0 dev:[dev 00:00] Jun 5 22:37:08 celeri kernel: disk 3, s:0, o:0, n:0 rd:0 us:0 dev:[dev 00:00] <SNIP UP TO DISK 26> Jun 5 22:37:08 celeri kernel: RAID1 conf printout: Jun 5 22:37:08 celeri kernel: --- wd:1 rd:2 nd:3 Jun 5 22:37:08 celeri kernel: disk 0, s:0, o:1, n:0 rd:0 us:1 dev:hde1 Jun 5 22:37:08 celeri kernel: disk 1, s:0, o:0, n:1 rd:1 us:1 dev:[dev 00:00] Jun 5 22:37:08 celeri kernel: disk 2, s:1, o:0, n:2 rd:2 us:1 dev:hdg1 Jun 5 22:37:08 celeri kernel: disk 3, s:0, o:0, n:0 rd:0 us:0 dev:[dev 00:00] <SNIP> Jun 5 22:37:08 celeri kernel: md: updating md1 RAID superblock on device Jun 5 22:37:08 celeri kernel: md: hdg1 [events: 00000016]<6>(write) hdg1's sb offset: 40202560 Jun 5 22:37:08 celeri kernel: md: hde1 [events: 00000016]<6>(write) hde1's sb offset: 40202560 Jun 5 22:37:08 celeri kernel: md: recovery thread got woken up ... Jun 5 22:37:08 celeri kernel: md1: resyncing spare disk hdg1 to replace failed disk Jun 5 22:37:08 celeri kernel: RAID1 conf printout: Jun 5 22:37:08 celeri kernel: --- wd:1 rd:2 nd:3 Jun 5 22:37:08 celeri kernel: disk 0, s:0, o:1, n:0 rd:0 us:1 dev:hde1 Jun 5 22:37:08 celeri kernel: disk 1, s:0, o:0, n:1 rd:1 us:1 dev:[dev 00:00] Jun 5 22:37:08 celeri kernel: disk 2, s:1, o:0, n:2 rd:2 us:1 dev:hdg1 Jun 5 22:37:08 celeri kernel: disk 3, s:0, o:0, n:0 rd:0 us:0 dev:[dev 00:00] <SNIP> Jun 5 22:37:08 celeri kernel: RAID1 conf printout: Jun 5 22:37:08 celeri kernel: --- wd:1 rd:2 nd:3 Jun 5 22:37:08 celeri kernel: disk 0, s:0, o:1, n:0 rd:0 us:1 dev:hde1 Jun 5 22:37:08 celeri kernel: disk 1, s:0, o:0, n:1 rd:1 us:1 dev:[dev 00:00] Jun 5 22:37:08 celeri kernel: disk 2, s:1, o:1, n:2 rd:2 us:1 dev:hdg1 Jun 5 22:37:08 celeri kernel: disk 3, s:0, o:0, n:0 rd:0 us:0 dev:[dev 00:00] <SNIP> Jun 5 22:37:08 celeri kernel: md: syncing RAID array md1 Jun 5 22:37:08 celeri kernel: md: minimum _guaranteed_ reconstruction speed: 100 KB/sec/disc. Jun 5 22:37:08 celeri kernel: md: using maximum available idle IO bandwith (but not more than 100000 KB/sec) for reconstruction. Jun 5 22:37:08 celeri kernel: md: using 124k window, over a total of 40202560 blocks. Jun 5 22:39:31 celeri kernel: APIC error on CPU0: 04(04) Jun 5 22:47:56 celeri kernel: APIC error on CPU1: 08(08) Jun 5 22:47:56 celeri kernel: APIC error on CPU0: 04(04) Jun 5 22:50:56 celeri kernel: APIC error on CPU1: 08(08) Jun 5 22:50:56 celeri kernel: APIC error on CPU0: 04(04) Jun 5 22:57:58 celeri kernel: APIC error on CPU1: 08(08) Jun 5 22:57:58 celeri kernel: APIC error on CPU0: 04(04) Jun 5 23:04:00 celeri kernel: APIC error on CPU1: 08(08) Jun 5 23:04:00 celeri kernel: APIC error on CPU0: 04(04) Jun 5 23:04:33 celeri kernel: md: md1: sync done. Jun 5 23:04:33 celeri kernel: RAID1 conf printout: Jun 5 23:04:33 celeri kernel: --- wd:1 rd:2 nd:3 Jun 5 23:04:33 celeri kernel: disk 0, s:0, o:1, n:0 rd:0 us:1 dev:hde1 Jun 5 23:04:33 celeri kernel: disk 1, s:0, o:0, n:1 rd:1 us:1 dev:[dev 00:00] Jun 5 23:04:33 celeri kernel: disk 2, s:1, o:1, n:2 rd:2 us:1 dev:hdg1 Jun 5 23:04:33 celeri kernel: disk 3, s:0, o:0, n:0 rd:0 us:0 dev:[dev 00:00] <SNIP> Jun 5 23:04:33 celeri kernel: RAID1 conf printout: Jun 5 23:04:33 celeri kernel: --- wd:2 rd:2 nd:3 Jun 5 23:04:33 celeri kernel: disk 0, s:0, o:1, n:0 rd:0 us:1 dev:hde1 Jun 5 23:04:34 celeri kernel: disk 1, s:0, o:1, n:1 rd:1 us:1 dev:hdg1 Jun 5 23:04:34 celeri kernel: disk 2, s:0, o:0, n:2 rd:2 us:0 dev:[dev 00:00] Jun 5 23:04:34 celeri kernel: disk 3, s:0, o:0, n:0 rd:0 us:0 dev:[dev 00:00] Jun 5 23:04:34 celeri kernel: md: updating md1 RAID superblock on device Jun 5 23:04:34 celeri kernel: md: hdg1 [events: 00000017]<6>(write) hdg1's sb offset: 40202560 Jun 5 23:04:34 celeri kernel: md: hde1 [events: 00000017]<6>(write) hde1's sb offset: 40202560 Jun 5 23:04:34 celeri kernel: md: recovery thread finished ... And that's that. If anyone read down to here, THANK YOU, and I really hope there's something simple I did wrong (like somehow creating two RAID's with some of the same disks?) David - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
