I would re-create md0 array with a missing disk as follows: mdadm -C /dev/md0 -l 1 -n 2 /dev/hdc2 missing Later you can hot add a disk to make it a normal 2-way mirror array. -- Regards, Mike T. On Mon, 2004-10-18 at 17:56, Konstantin Olchanski wrote: > Dear Linux raiders- I ran into a problem with raid1 recovery after > a disk failure (running Fedora2, kernel 2.6.8-1.521smp). > > 1) I had a raid1 filesystem mirrored across /dev/hda2 and /dev/hdc2. > 2) Disk hda died (unreadable sectors, fails SMART tests) > 3) A new blank hda was installed and partitionned exactly like hdc. > 4) I cannot restart and rebuild the raid1 volume because hdc2 is > in a funny "spare" state (see below) > > How do I mark hdc2 as "active"? > Once "active", I assume then I will be able to restart md0, > hot-add /dev/hda2 as usual. (And the mirror will resync and rebuild itself? > Hopefully?) > > [root@tw04 root]# mdadm -E /dev/hdc2 > /dev/hdc2: > Magic : a92b4efc > Version : 00.90.00 > UUID : aade8782:20122089:4f496788:228d85b9 > Creation Time : Fri Oct 8 17:12:56 2004 > Raid Level : raid1 > Device Size : 124158208 (118.41 GiB 127.14 GB) > Raid Devices : 2 > Total Devices : 2 > Preferred Minor : 0 > > Update Time : Mon Oct 18 06:04:35 2004 > State : clean, no-errors > Active Devices : 1 > Working Devices : 2 > Failed Devices : 1 > Spare Devices : 1 > Checksum : 7041db42 - correct > Events : 0.312429 > > > Number Major Minor RaidDevice State > this 2 22 2 2 spare /dev/hdc2 > 0 0 3 2 0 active sync /dev/hda2 > 1 1 0 0 1 faulty removed > 2 2 22 2 2 spare /dev/hdc2 > [root@tw04 root]# - 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
