Re: Duplicate PV's - how does LVM choose which one to use

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Feb 21, 2012 at 11:49:40AM -0500, Stuart D Gathman wrote:
> But if they are different paths, incrementing seqno won't hurt, both  
> paths will see the change.  And if it is a mirror that failed to start,  
> then the chosen leg is now distinguishable.  Is there a problem with  
> incrementing seqno an extra time at startup when multipath is the normal  
> situation?

If you update some PV-level indicator and only one path sees the update, then
that's exactly a case where you must use neither until the sysadmin decides
which was the right one to use.  And the other case - multipath - well again,
why didn't your multipath software start up and take control?

Alasdair

_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/


[Index of Archives]     [Gluster Users]     [Kernel Development]     [Linux Clusters]     [Device Mapper]     [Security]     [Bugtraq]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]

  Powered by Linux