At Wed, 16 Feb 2011 13:43:16 -0500 (EST) CentOS mailing list centos@centos.org wrote:
On 2/16/2011 12:09 PM, compdoc wrote:
The problem is, the kernel seemingly randomly switches between /dev/sdb and /dev/sdc for these devices.
I use the UUID in fstab rather than '/dev/sda', etc
In this case it would be something you give to mdadm to add a device back to a set. And you'd have to know which one in a rotation was coming back to which machine, something you wouldn't otherwise have to track since it is going to overwrite everything with the re-sync anyway.
We do track (and physically label) that, because there are drives of different size/manufacturer/geometry on different servers, so that would be ok.
Thought question: is there any *pattern* to the seemingly randomness of the /dev/sdb vs. /dev/sdc business? Do disks of certain sizes/manufacturer/geometry do the switch more or less often?
However, we're not set up for UUIDs, the fstab just shows /dev/md0, etc. Perhaps this is the answer for us, but I'll have to look into how tricky it would be to migrate roughly 50 production servers.
Thanks again! _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos