You should all use 1.6 and forget this whole mess :)
Kit Westneat wrote:
Ah, I was operating under the impression that the --group flag would
take care of setting the OSTs active. It would be nice if there were a
command that would do this, if not the group flag. I know it is
possible to use the --select flag to set individual OSTs active, but
it'd be nice to be able to set an entire group active. If --group
isn't a good choice for implementing this, would it be possible to
implement --select <group>=<node>?
It'd be nice to avoid having to select each OST individually when we
have these groups defined.
Thanks,
Kit
Felix, Evan J wrote:
Kit are you actually modifying the xml file between stop
and start using lconf?
In our ldap world, which should be similar, you need to run lactive
between the lconf calls.. For example to failover m973 to m956(failover
pair) we run 3 commands from a management server:
---------------------
rsh m973 /usr/sbin/lconf --ldapurl ldap://lustre.hpcs2.emsl.pnl.gov
--config mpp2fo --cleanup --failover --group pair15_2
/usr/sbin/lactive --ldapurl ldap://lustre.hpcs2.emsl.pnl.gov --config
mpp2fo --pwfile /home/mscf/lustre/pw --group pair15_2 --active m956
rsh m956 /usr/sbin/lconf --ldapurl ldap://lustre.hpcs2.emsl.pnl.gov
--group pair15_2 --config mpp2fo
---------------------
The lactive command modifies the config on ldap(or xml file) so that the
other server believes he should server the new targets.
Note: this is lustre 1.4.2.
Evan
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Kit Westneat
Sent: Wednesday, November 08, 2006 2:24 PM
To: [email protected]
Subject: [Lustre-discuss] failover groups
Hello,
I'm trying to get OST failover going using failover groups.
Currently I am able to stop OSTs by group name (using: lconf
--cleanup --group <group name> /etc/lustre/config.xml) but unless I
modify lconf, I am unable to start OSTs by group name (using: lconf
--group <group name> /etc/lustre/config.xml).
Am I correct in thinking that this is a bug, or am I
misunderstanding groups?
If I change lconf at line 1524 from:
if self.active and config.group and config.group !=
ost.get_val('group',
ost.get_val('name')):
self.active = 0
to:
if not self.active and config.group and config.group ==
ost.get_val('group', ost.get_val('name')):
self.active = 1
elif self.active and config.group and config.group !=
ost.get_val('group', ost.get_val('name')):
self.active = 0
then it seems to work like I'd expect it to.
Thanks,
Kit Westneat
_______________________________________________
Lustre-discuss mailing list
[email protected]
https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
_______________________________________________
Lustre-discuss mailing list
[email protected]
https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
_______________________________________________
Lustre-discuss mailing list
[email protected]
https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
