On 21st August I asked -- I have 5 disks in a RAID 0 (stripe/concat) configuration under Solstice DiskSuite. One is going bad (1 hard error, soft errors clocking up 2 or 3 a day) As you can see the system isn't mirrored, so if I'm not careful I'll have to do a full restore of all the data, tedious. The system is under contract, so a replacement disk is arriving tomorrow. If I format the new disk the same as the old one, don't newfs it, and dd the data partition from failing to new, what is the chance of it working? -- Thanks to Andrew Toon James W. Abendschan Darren Dunham John Stoffel Jeff Woolsey Brad Morrison for their replies and messages of support, especially those who mentioned about SLVM keeping track of the disk ids. In short it worked. The technique is as follows remove any state database replicas on the failing disk using metadb -d comment out S35svm.init in /etc/rcS.d to stop volume manager initialising comment out entry in /etc/vfstab for the metadrive touch /reconfigure to force a configuration reboot halt the system connect the new disk boot single user format and label the new disk identically to the failing one. (Here I was probably very fortunate as the disk supplied was same make and model as the failing one) dd the data partition from the old to new disk. I used a block size of 248b i.e. one track per transfer This stage must be error free. touch /reconfigure halt the system replace the failing drive with the new one, making sure the SCSI address stays the same i.e. if the failing drive was c1t2d0 the new one must be c1t2d0 boot single user update the disk id using metadevadm uncomment S35svm.init in /etc/rcS.d halt the system boot single user fsck the metadrive If this goes cleanly then uncomment the metadrive in vfstab and reboot. You can add state database replicas if you wish This took me 90 minutes to rebuild the system as opposed to approximately 18 hours if I'd had to restore all the data from backup. -- John Landamore School of Mathematics & Computer Science University of Leicester University Road, LEICESTER, LE1 7RH J.Landamore@mcs.le.ac.uk Phone: +44 (0)116 2523410 Fax: +44 (0)116 2523604 _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagersReceived on Tue Aug 28 05:58:55 2007
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