On 02/20/2013 01:32 PM, Stone wrote: >>> Am 19.02.2013 23:08, schrieb Phil Turmel: >>>> Serious issue #1: >>>> >>>> You have unreadable sectors on sdc. When you hit them during rebuild, >>>> sdc will be kicked out (again). They might not be permanent errors, >>>> but >>>> you can't tell until the drive is given fresh data to write over them. >>>> >>>> You have two choices: >>>> >>>> 1) use ddrescue to copy sdc onto a new drive, then use it in place of >>>> sdc when you re-create the array, or >>>> >>>> 2) use badblocks to find the exact locations of the bad sectors, then >>>> write zeros to those sectors using dd. >>>> >>>> Either way, you have lost whatever those sectors used to hold. > befor i will recreate the raid with an older mdadm i would search the > badblocks. is this right? Yes, and write zeros to those blocks to either fix them or relocate them. > i have check all drives and the sdc device had badblock: > Pass completed, 48 bad blocks found. (48/0/0 errors) > but die binary dont give me the info where they are.. > i have used this command in a screen badblocks -v /dev/sdc1 "man badblocks" You should use the "-o" option to save the list. Phil -- 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
