[Linux-HA] DRBD, reading off of secondary

[Lars Marowsky-Bree]

On 2004-03-15T18:56:35,
   "dbernick at lextranet.com" <dbernick at lextranet.com> said:

> I like DRBD. I've been using it. It seems to be fast and efficient. It 
> keeps my disks in sync and the failover works and all of that.
> BUT, the I was wondering if anyone has figured out a hack or any way at all 
> to use the secondary (standby) disk as a read-only mount. Any way to read 
> the information off the drive in realtime would be fine by me.

This is simply not possible with the one-node filesystems right now (ie,
neither ext3, reiserfs, ext2 or whatever can do that, they'll crash your
machine!).

And drbd also cannot do that right now. But the real problem is the
first part. Even Lustre can't do that with drbd.

It's DOCUMENTED to not work somewhere in the drbd documentation ;-)


Mit freundlichen Grüßen,
    Lars Marowsky-Brée <lmb at suse.de>

-- 
High Availability & Clustering	      \ ever tried. ever failed. no matter.
SUSE Labs			      | try again. fail again. fail better.
Research & Development, SUSE LINUX AG \ 	-- Samuel Beckett