2017-03-09 2:31 GMT+01:00 Brad Campbell <lists2009@xxxxxxxxxxxxxxx>: > In general a good number of "help me my RAID is dead" requests that hit this > list are due to not performing routine array or drive scrubs. So one drive > dies, and one of the others has a previously unknown bad sector. When you > put the new drive in, during the rebuild the bad sector is hit and the whole > array comes tumbling down. > > Doing a proactive replacement reduces the possibility of this occurring. > Having said that, if your disk is dead then there's no other option anyway. > Regular array scrubs go a long way to mitigating this risk, but it does > happen frequently enough that you need to be warned against it. OK I misunderstood You are right, scrubs are needed (and at least on debian, are scheduled automatically) and I'm scrubbing my d arrays monthly (don't know if it's enough) in addition to weekly smart long test I was referring to just removing a disks I thought that removing a disk was a bad idea and that MD wasn't able to support that properly bringing the whole raid down Also, I always use 3way mirrors or raid6. I never use a single redundancy raid. -- 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
