On Sun, Mar 29, 2009 at 10:00:07 +1100, L <yuanlux@xxxxxxxxx> wrote: > Hi > > I have RAID1 system, the partition /dev/md4 is in raid1 with > /dev/sda4 /dev/sdb4. In order to check /dev/sdb4 I remove it from > /dev/md4 There are ways of checking disks without pulling them out of service. smartctl can do surface scans while leaving the disk functional. > The system did sync md4, this lasted ~ 6 hours. however, after reboot, > /proc/mdstat shows /dev/md4 has one disk /dev/sda4 active. 6 hours is a long time for a resync. Was the system under heavy load? Are an IO errors showing up in your logs? > How to let system hold both partitions /dev/sda4 and /dev/sdb4 for > /dev/md4 after reboot? >From what you described it looked like you were correctly readding the disk and waiting for the sync to complete before rebooting. -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines