http://bugzilla.novell.com/show_bug.cgi?id=559391 http://bugzilla.novell.com/show_bug.cgi?id=559391#c0 Summary: mdadm: unable to remove failed device Classification: openSUSE Product: openSUSE 11.2 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Other AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: jnelson-suse@jamponi.net QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091103 SUSE/3.5.5-1.1.2 Firefox/3.5.5 A software raid device, /dev/md1, experienced a component failure. The component was /dev/sdf, an external USB disk. The disk was removed, and a new one replaced it which became /dev/sdg. However, now mdadm won't allow me to remove the faulty device: mdadm /dev/md1 --fail /dev/sdf because /dev/sdf doesn't actually exist. However, mdadm claims it is still present (but faulty): turnip:~ # mdadm -D /dev/md1 /dev/md1: Version : 1.01 Creation Time : Thu Aug 27 17:19:56 2009 Raid Level : raid1 Array Size : 72612920 (69.25 GiB 74.36 GB) Used Dev Size : 72612920 (69.25 GiB 74.36 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Mon Nov 30 20:02:42 2009 State : active, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Name : turnip:1 (local to host turnip) UUID : da9317ab:e1991da4:864ac8f9:4d1412b3 Events : 31265 Number Major Minor RaidDevice State 0 9 12 0 active sync /dev/md12 1 0 0 1 removed 2 8 80 - faulty writemostly spare 8,80 corresponds to /dev/sdf and I can't add /dev/sdg as /dev/md1 is still "busy": turnip:~ # mdadm /dev/md1 --add /dev/sdg mdadm: add new device failed for /dev/sdg as 3: Device or resource busy turnip:~ # So I stop the array, and re-start it (--assemble --scan). I am now able to remove /dev/sde However, now whenever I add /dev/sdg to the array, it immediately enters failed state and stays there: turnip:~ # mdadm -D /dev/md1 /dev/md1: Version : 1.01 Creation Time : Thu Aug 27 17:19:56 2009 Raid Level : raid1 Array Size : 72612920 (69.25 GiB 74.36 GB) Used Dev Size : 72612920 (69.25 GiB 74.36 GB) Raid Devices : 2 Total Devices : 1 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Mon Nov 30 20:13:03 2009 State : active, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 Name : turnip:1 (local to host turnip) UUID : da9317ab:e1991da4:864ac8f9:4d1412b3 Events : 31319 Number Major Minor RaidDevice State 0 9 12 0 active sync /dev/md12 1 0 0 1 removed turnip:~ # add it: mdadm /dev/md1 --re-add /dev/sdg (or mdadm /dev/md1 --add /dev/sdg) turnip:~ # mdadm -D /dev/md1 /dev/md1: Version : 1.01 Creation Time : Thu Aug 27 17:19:56 2009 Raid Level : raid1 Array Size : 72612920 (69.25 GiB 74.36 GB) Used Dev Size : 72612920 (69.25 GiB 74.36 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Mon Nov 30 20:13:18 2009 State : active, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Name : turnip:1 (local to host turnip) UUID : da9317ab:e1991da4:864ac8f9:4d1412b3 Events : 31322 Number Major Minor RaidDevice State 0 9 12 0 active sync /dev/md12 1 0 0 1 removed 2 8 96 - faulty spare /dev/sdg turnip:~ # /var/log/messages: Nov 30 20:13:03 turnip kernel: [131611.321367] md: unbind<sdg> Nov 30 20:13:03 turnip kernel: [131611.332050] md: export_rdev(sdg) Nov 30 20:13:18 turnip kernel: [131626.791407] md: bind<sdg> The only way I'm able to add it is if I zero the superblock first: mdadm --zero-superblock /dev/sdg then --add works. Reproducible: Always Steps to Reproduce: 1. 2. 3. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.