On 05/31/2012 06:17 PM, Bruno Wolff III wrote: > On Wed, May 30, 2012 at 14:43:29 +0100, > Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: >> >> Count yourself lucky - if it can only find part of an old RAID volume eg >> a stale header the FC16 installer just crashed. FC17 has introduced a new >> bug where you can't install onto a degraded RAID1 array, which prevents >> all sorts of useful stuff working. > > I am pretty sure that has been the case for a long time. I have filed bugs about that it the past. Arguably there are reasons not to install on a degraded array as there can problems if this missing element(s) show up again later. I have also asked for support for creating raid 1 arrays with one element in the installer as that allows you to add another array element to the device later with little work. Otherwise you need to do it by hand (which I have done), but that's easy to screw up on. I don't know if you can currently install to a previously existing raid 1 array with only one element. Yes, this bug is very old. Refusing to work on a degraded array is plainly stupid. By definition, RAID1 is a method to go on even if a disk is missing. If a software detects a degraded array and refuses to go on, it is broken. Reappearance of missing disks is normal and should never cause problems (each disk has a generation counter, so it is evident who has stale data). This limitation gave me a lot of problems with single-disk RAID1 or missing-disk RAID1. On some servers I have 4disk RAID1; before upgrading I remove one of the disk from the array and upgrade the 3of4 group, using the 4th as readily available rollback option in case of upgrade problems. This has become impossible a lot of time ago. Do you have bug numbers? I've recently searched a little and supposed they were all closed (unresolved). Best regards. -- Roberto Ragusa mail at robertoragusa.it -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
