Backup!!!!!!!! Von meinem iPhone gesendet > Am 23.11.2020 um 17:10 schrieb centos at niob.at: > > On 23/11/2020 16:49, Frank Bures wrote: >> On 11/23/20 10:46 AM, Simon Matter wrote: >>>> Hi, >>>> >>>> I want to replace my hard drives based SW RAID-1 with SSD's. >>>> >>>> What would be the recommended procedure? Can I just remove one drive, >>>> replace with SSD and rebuild, then repeat with the other drive? >>> >>> I suggest to "mdadm --fail" one drive, then "mdadm --remove" it. After >>> replacing the drive you can "mdadm --add" it. >>> >>> If you boot from the drives you also have to care for the boot loader. I >>> guess this depends on how exactly the system is configured. >> > If you can the new disks while the original 2 disks are still available then grow, add, wait, fail, remove, shrink. That way you will never loose redundancy... > > # grow and add new disk > > mdadm --grow -n 3 /dev/mdX -a /dev/... > > # wait for rebuild of the array > > mdadm --wait /dev/mdX > > # fail old disk > > mdadm --fail /dev/sdY > > # remove old disk > > mdadm /dev/mdX --remove /dev/sdY > > # add second disk > > mdadm /dev/mdX --add /dev/... > > # wait > > mdadm --wait /dev/mdX > > # fail and remove old disk > > mdadm --fail /dev/sdZ > > mdadm /dev/mdX --remove /dev/sdZ > > # shrink > > mdadm --grow -n 2 /dev/mdX > > > > > peter > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos