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drbd-user: Re: [DRBD-user] DRBD RAID question

Re: [DRBD-user] DRBD RAID question

From: Ben Beuchler <insyte_at_nospam>
Date: Mon Mar 01 2010 - 23:04:57 GMT
To: drbd-user@lists.linbit.com

> The servers have a RAID0 array which is mirrored by drbd.
> My question is what happens if one HDD from the RAID0 array on one
> server fails and the RAID array is broken? Will DRBD mirror the broken
> stuff to the other server too messing up the data?

As I understand it, DRBD only knows about modifications to the
resource as they move down the stack( DRBD -> RAID -> DISK ). Since a
broken RAID array happens at a lower level than the DRBD resource,
it's not going to start pushing those changes across. It should,
however, receive an IO error and respond to that based on your config

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