[Linux-cluster] RHEL 6 cluster filesystem resource and LVM snapshots

2010-11-22 Thread Jankowski, Chris
Hi, I am preparing a build of a RHEL 6 cluster with a filesystem resource(s) (ext4 or XFS). The customer would like to use LVM snapshots of the filesystems for tape backup. The tape backup may take a few hours after which the snapshot will be deleted. Questions: 1. Is the filesystem resourc

Re: [Linux-cluster] Filesystem repair on a Clustered-NFS Server

2010-11-22 Thread Jonathan Barber
On 22 November 2010 18:12, Randy Zagar wrote: > > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Assume for a moment that you have an EL5 NFS Cluster. > > You have a clustered service "nfs-server1" that has an IP resource and > several "child" filesystems tied to it so that the filesystems mo

Re: [Linux-cluster] GFS+DRBD+Quorum: Help wrap my brain around this

2010-11-22 Thread A. Gideon
On Sun, 21 Nov 2010 21:46:03 +, Colin Simpson wrote: > I suppose what I'm saying is that there is no real way to get a quorum > disk with DRBD. And basically it doesn't really gain you anything > without actual shared storage. I understand that. That's why I'm looking for that "external" so

Re: [Linux-cluster] GFS vs Ext3/4

2010-11-22 Thread jeremymiller
> Forgive me, but I am not entirely sure how switching the > underlying FS alone will reduce the overhead in cluster.conf. > Can you explain that bit? Perhaps a snippet from your > cluster.conf would help. > It reduces the overhead for rgmanager - less resources for the daemon to manage. Our clu

Re: [Linux-cluster] gfs2_jadd borked my cluster?

2010-11-22 Thread rhurst
Your arrival to Xen's tap:sync "solution" was good to read, Jeff, thanks for sharing! -Original Message- From: linux-cluster-boun...@redhat.com [mailto:linux-cluster-boun...@redhat.com] On Behalf Of Jeff Sturm Sent: Monday, November 22, 2010 1:03 PM To: linux clustering Subject: Re: [Li

[Linux-cluster] Filesystem repair on a Clustered-NFS Server

2010-11-22 Thread Randy Zagar
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Assume for a moment that you have an EL5 NFS Cluster. You have a clustered service "nfs-server1" that has an IP resource and several "child" filesystems tied to it so that the filesystems move when the IP moves through the cluster. Each of these chi

Re: [Linux-cluster] gfs2_jadd borked my cluster?

2010-11-22 Thread Jeff Sturm
> -Original Message- > From: linux-cluster-boun...@redhat.com [mailto:linux-cluster-boun...@redhat.com] > On Behalf Of rhu...@bidmc.harvard.edu > Sent: Monday, November 22, 2010 10:34 AM > To: linux-cluster@redhat.com > Subject: Re: [Linux-cluster] gfs2_jadd borked my cluster? > > I suspec

Re: [Linux-cluster] gfs2_jadd borked my cluster?

2010-11-22 Thread rhurst
FYI, RHN support has provided no insight to the problem. We recreated the GFS2 filesystems and can join/use them, but after a few days, they all withdraw at some point. :( I suspect a virtio_blk caching issue is causing the problems with GFS2 on KVM guests. I read in the RHEL 5.6 (beta) rele

Re: [Linux-cluster] Starter Cluster / GFS

2010-11-22 Thread Steven Whitehouse
Hi, On Sat, 2010-11-20 at 11:15 +, Gordan Bobic wrote: > On 11/19/2010 05:46 PM, Nicolas Ross wrote: > >> Back when I tried using it, it was reproducible by having > 1 dovecot > >> IMAP > >> client running in the cluster with maildirs stored on GFS2. Accessing > >> mailboxes with only 2-3 user