On 05/31/2012 06:17 PM, Bruno Wolff III wrote: > On Wed, May 30, 2012 at 14:43:29 +0100, > Alan Cox <a...@lxorguk.ukuu.org.uk> 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@lists.fedoraproject.org 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
