[linux-lvm] RE: Sharing LVM's via NFS on Redhat 8.0 (nice clarification)
DJ TweeQ
djtweeq at hotmail.com
Fri Feb 21 15:17:02 UTC 2003
Thanks Patrick...nice clarification and more than helpfull visual
description :) Hey Sistina...wouldn't be such a bad idea to add that one to
the sharing LV's/dangerous operations section on the HOWTO. :)
>Sharing over NFS is fine. What you are doing with NFS is sharing the
> >filesystem.
>The dangerous behaviour mentioned is when you are sharing the actual >block
>device that is the LV. A subtle but very important distinction.
>This is safe:
>
>+----+ NFS +---------+
>| |---------| Box B |
>|boxA| | | +----+ +---------+ |
>SCSI/IDE/FC
> |
> ^^^^^^^
> |disks|
> | |
> | |
> | |
> ^^^^^^^
> This is dangerous:
>
>+----+ +----+
>| | | |
>|boxA| |boxB| +----+ +----+ \ / ^^^^^^^
> |disks|
> | |
> | |
> | |
> ^^^^^^^
>
>
>
>patrick
>
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