Re: [zfs-discuss] FS Reliability WAS: about btrfs and zfs
3. Do NOT let a system see drives with more than one OS zpool at the same time (I know you _can_ do this safely, but I have seen too many horror stories on this list that I just avoid it). Can you elaborate #3? In what situation will it happen? Thanks. Fred ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] FS Reliability WAS: about btrfs and zfs
On Fri, Oct 21, 2011 at 8:02 PM, Fred Liu fred_...@issi.com wrote: 3. Do NOT let a system see drives with more than one OS zpool at the same time (I know you _can_ do this safely, but I have seen too many horror stories on this list that I just avoid it). Can you elaborate #3? In what situation will it happen? Some people have trained their fingers to use the -f option on every command that supports it to force the operation. For instance, how often do you do rm -rf vs. rm -r and answer questions about every file? If various zpool commands (import, create, replace, etc.) are used against the wrong disk with a force option, you can clobber a zpool that is in active use by another system. In a previous job, my lab environment had a bunch of LUNs presented to multiple boxes. This was done for convenience in an environment where there would be little impact if an errant command were issued. I'd never do that in production without some form of I/O fencing in place. -- Mike Gerdts http://mgerdts.blogspot.com/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] FS Reliability WAS: about btrfs and zfs
Recently someone posted to this list of that _exact_ situation, they loaded
an OS to a pair of drives while a pair of different drives containing an OS
were still attached. The zpool on the first pair ended up not being able to
be imported, and were corrupted. I can post more info when I am back in the
office on Monday.
On Friday, October 21, 2011, Fred Liu fred_...@issi.com wrote:
3. Do NOT let a system see drives with more than one OS zpool at the
same time (I know you _can_ do this safely, but I have seen too many
horror stories on this list that I just avoid it).
Can you elaborate #3? In what situation will it happen?
Thanks.
Fred
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