When you look at the archive, make sure you keep clicking "next in thread" to see the complete story. It did end well! Guy -----Original Message----- From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of David Greaves Sent: Sunday, November 28, 2004 11:43 AM To: Brian Ristuccia Cc: linux-raid@xxxxxxxxxxxxxxx Subject: Re: best effort rebuild with 1 failed, 1 marginal disks in raid5? Brian Ristuccia wrote: >I have a 3 disk raid5 array which recently suffered catastrophic failure of >one disk. While the array was degraded, one more disk failed out of the >array due to a bad block. Investigation with badblocks reveals the marginal >disk has only a handful of bad blocks. > >What I'd like to do is start the array with the good disk and the marginal >disk, add a 3rd known good disk, and rebuild the array as best as possible. >Then I'd fail the marginal disk and install another good disk. > Well, first of all - don't do anything without verifying it first. There's a good chance you can recover quite some data if you don't screw it up by 'having a go' (I speak from experience :) ) Instead of your plan, can I suggest you try to duplicate the disk/partition showing a few bad blocks onto a known good disk. Then forcefully reassemble the array, then add another good disk for reconstruction. Useful tools include dd_rhelp and dd_rescue Take a look in the archives as this kinda hit me recently. http://marc.theaimsgroup.com/?l=linux-raid&m=110025421113782&w=2 David - 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 - 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
