Ouch! No!! This would re-build data from parity!!! He thinks his parity is bad. He wants to re-build the parity from the data! I don't know if this can even be done! Recovering from a power failure does force a re-build (2.4), but from what I remember the system looks like it is re-building a failed disk, which is not what he wants to do. If the parity was good, re-building any 1 disk would be fine. Guy -----Original Message----- From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of Gordon Henderson Sent: Tuesday, August 10, 2004 5:04 AM To: Philip Molter Cc: linux-raid@xxxxxxxxxxxxxxx Subject: Re: Force parity resync on raid5? On Mon, 9 Aug 2004, Philip Molter wrote: > How do I force a parity resync on a raid5 array? Under 2.4, I would do > this by hard cycling the box and when it came back up, it would > automatically resync the array. Under 2.6, this appears to have gone away. I don't know about 2.6, (still living with 2.4) but can't you simply do: raidhotremove /dev/mdX /dev/hdYZ followed by raidhotadd /dev/mdX /dev/hdYZ or /dev/sdYZ if SCSI disks... However, picking the right disk to remove might be tricky... And if you were at all unsure about data on the disks, maybe rebooting and doing a hard fsck of the partition(s) in maintenance mode might be a good thing too... Good luck! - 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
