Robin's solution worked. I used ddrescue to copy sde to a new disk, then put the new disk in place of sde, and started the array in degraded mode. Now I just need to get a replacement disk for sdf and the array should be all set. I believe I owe Robin a pint. Got Paypal or Google Wallet? On Fri, Oct 17, 2014 at 9:14 AM, John Stoffel <john@xxxxxxxxxxx> wrote: > > Another> Sorry to state the obvious but...... To restore the degraded > Another> array would (based on the info you've posted) likely take > Another> longer then temporarily moving the data to a different set of > Another> drives. > > How do you figure this? He hasn't posted any useful data on his array > at all. We know it's six 3Tb disks in RAID10, so that's at most 9Tb > of data. Moving 3Tb (bad disk ddrescue'd onto new disk) is only 3Tb > to move. Then the resync will of course take time. > > But if he doesn't have the spare disk space, it's probably the only way. > > Another> As time seems to be a major consideration here (likely/possible > Another> failure of sde) then surely the optimal strategy has to be to get the > Another> data off first, then look at the rebuilding the degraded array? > > Another> Just my 2c > > Another> On 17 October 2014 15:05, John Stoffel <john@xxxxxxxxxxx> wrote: >>> >>> >>> Ian, >>> >>> It would also help if you posted the details of your setup using: >>> >>> cat /proc/partitions >>> cat /proc/mdstat >>> >>> mdadm -D /dev/md# >>> - for each of the devices above. >>> >>> mdadm -E /dev/sd<drive><#> >>> - for each disk or partition in the array from above. >>> >>> >>> >>> But the suggestions to ddrescue the going bad drive onto a new disk is >>> a good one. On my debian system, I would do the following: >>> >>> sudo apt-get install gddrescue >>> ddrescue /dev/sde /dev/sdf /var/tmp/ddrecue-sde.log >>> >>> and see how that goes. >>> >>> Good luck, >>> John >>> -- >>> 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 > Another> -- > Another> To unsubscribe from this list: send the line "unsubscribe linux-raid" in > Another> the body of a message to majordomo@xxxxxxxxxxxxxxx > Another> 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 -- 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
