[DRBD-user] Running root on DRBD

David Goodwin dg at clocksoft.com
Wed Dec 29 10:13:04 CET 2004

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


David wrote:
> Hi all,
>  
> Is it possible to run the root filesystem on DRBD?
>  
> Thanks,
> David.

Hi,

1) The root filesystem of the secondary machine needs to be different 
from the primary (i.e. the secondary machine needs to be booted with 
different ip addresses/names etc), so for e.g. a high availability setup 
this doesn't make sense.

2) If you did have the root filesystem mirrored via DRBD, I'm not sure 
how you'd go about booting the machine to start with (unless you mount 
-o remount it somehow most of the way through bootup).


You're normally best off using DRBD on a seperate partition (e.g. 
/dev/hdb2 (/var/spool/something)) as then you can access the data at the 
same place on both machines, after a failover, without having to 
reconfigure anything (a typical active/standby style configuration).


Hope that helps,

David.
-- 
David Goodwin
w: http://www.clocksoft.com
e: david.goodwin at clocksoft.com
t: 0121 313 3850

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