Re: [Linux-cluster] GFS tuning advice sought

2008-01-07 Thread Gordan Bobic
[EMAIL PROTECTED] wrote: Is there any GFS tuning I can do which might help speed up access to these mailboxes? You probably need GFS2 in this case. To fix mail server issues in GFS1 would be too intrusive with current state of development cycle. I noticed you mention that GFS2 might be best f

Re: [Linux-cluster] GFS tuning advice sought

2008-01-07 Thread Wendy Cheng
[EMAIL PROTECTED] wrote: Is there any GFS tuning I can do which might help speed up access to these mailboxes? You probably need GFS2 in this case. To fix mail server issues in GFS1 would be too intrusive with current state of development cycle. Wendy, I noticed you mention that

Re: [Linux-cluster] would this configuration work for lvs-dr?

2008-01-07 Thread Lon Hohberger
With direct routing, all the nodes must be visible to the outside world using the same route as the director(s). If you're trying to route *through* your director, you need to use NAT (or tun, which I've never used). Direct routing means that you are not using the director as a router, just a loa

Re: [Linux-cluster] freezing a service

2008-01-07 Thread Michael Harrison
Ah, thanks. No, for the time being I'm running the bits released for RHEL4U4. Good to know that freezing will be available at sometime in the future. BTW, what will it be called ? Freezing ? -Mike --- Lon Hohberger <[EMAIL PROTECTED]> wrote: > On Sun, 2008-01-06 at 17:45 -0800, Michael Harriso

Re: [Linux-cluster] freezing a service

2008-01-07 Thread Lon Hohberger
On Mon, 2008-01-07 at 17:48 -0500, Lon Hohberger wrote: > On Sun, 2008-01-06 at 17:45 -0800, Michael Harrison wrote: > > Hi, > > > > Is it possible to freeze a service, so that rgmanager effectively > > ignores it? In other words, when doing maintenance on a production > > cluster, it's sometimes

Re: [Linux-cluster] freezing a service

2008-01-07 Thread Lon Hohberger
On Sun, 2008-01-06 at 17:45 -0800, Michael Harrison wrote: > Hi, > > Is it possible to freeze a service, so that rgmanager effectively > ignores it? In other words, when doing maintenance on a production > cluster, it's sometimes necessary to stop the cluster services on that > node. When rgmanage

Re: [Linux-cluster] GFS tuning advice sought

2008-01-07 Thread Gordan Bobic
James Fidell wrote: I have a 3-node cluster built on CentOS 5.1, fully updated, providing Maildir mail spool filesystems to dovecot-based IMAP servers. As it stands GFS is in its default configuration -- no tuning has been done so far. Mostly, it's working fine. Unfortunately we do have a few

Re: [Linux-cluster] freezing a service

2008-01-07 Thread Michael Harrison
What I'd like to do is stop the cluster components, leaving the services running. So for example, stop rgmanager, fenced, cman, ccsd for upgrades or whatever, and not have rgmanager fail over an IP address that it would otherwise control. Does it make sense? Cheers, -Mike --- Robinson Maureira

Re: [Linux-cluster] freezing a service

2008-01-07 Thread Robinson Maureira Castillo
Hi there, you can always stop and disable a service using: clusvcadm -d And start and re-enabling it later with: clusvcadm -e Hope it helps. Best regards, Michael Harrison wrote: > Hi, > > Is it possible to freeze a service, so that rgmanager effectively > ignores it? In other words, when

Re: [Linux-cluster] GFS tuning advice sought

2008-01-07 Thread [EMAIL PROTECTED]
>> Is there any GFS tuning I can do which might help speed up access to >> these mailboxes? >> > You probably need GFS2 in this case. To fix mail server issues in GFS1 > would be too intrusive with current state of development cycle. Wendy, I noticed you mention that GFS2 might be best for this.

Re: [Linux-cluster] GFS tuning advice sought

2008-01-07 Thread Wendy Cheng
James Fidell wrote: I have a 3-node cluster built on CentOS 5.1, fully updated, providing Maildir mail spool filesystems to dovecot-based IMAP servers. As it stands GFS is in its default configuration -- no tuning has been done so far. Mostly, it's working fine. Unfortunately we do have a few

Re: [Linux-cluster] GFS: assertion failure in add_to_queue

2008-01-07 Thread Ferenc Wagner
Robert Clark <[EMAIL PROTECTED]> writes: > On Fri, 2008-01-04 at 15:49 +0100, Ferenc Wagner wrote: > >> I'm using a 1-node GFS1 "cluster" with DLM locking and sporadically >> (say once a week) get the following in the kernel logs (Linux 2.6.23): >> >> GFS: fsid=noc:cricket.0: warning: assertion "

Re: [Linux-cluster] GFS: assertion failure in add_to_queue

2008-01-07 Thread Robert Clark
On Fri, 2008-01-04 at 15:49 +0100, Ferenc Wagner wrote: > I'm using a 1-node GFS1 "cluster" with DLM locking and sporadically > (say once a week) get the following in the kernel logs (Linux 2.6.23): > > GFS: fsid=noc:cricket.0: warning: assertion "(tmp_gh->gh_flags & > GL_LOCAL_EXCL) || !(gh->gh

[Linux-cluster] GFS tuning advice sought

2008-01-07 Thread James Fidell
I have a 3-node cluster built on CentOS 5.1, fully updated, providing Maildir mail spool filesystems to dovecot-based IMAP servers. As it stands GFS is in its default configuration -- no tuning has been done so far. Mostly, it's working fine. Unfortunately we do have a few people with tens of th