Hi,
Both GFS1 and GFS2 are safe from this problem since neither of them use
barriers. Instead we do a flush at the critical points to ensure that
all data is on disk before proceeding with the next stage.
Using barriers can improve performance in certain cases, but we've not
yet implemented them
Tomasz Sucharzewski napisał(a):
Hello,
Ryan O'Hara wrote:
4 - Limitations
...
- Multipath devices are not currently supported.
What is the reason - it is strongly required to use at least two HBA in a SAN
network, which is useless when using scsi reservation.
Hello,
There is need
I believe that this is only a limitation for RHEL4. RHEL5 should have a
fix that allows dm-multipath to properly pass ioctls to all devices.
Hello,
One problem is registration, but another problem is un-registration fe.
when there is failover from one HBA to another and failback. Third
problem
From my understanding persistent SCSI reservations are only needed if I
am using the fence_scsi module.
Yes.
Best Regards
Maciej Bogucki
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Hello all,
I have spent the day reading through the mailing list archives, Redhat
documentation, and CentOS forums, and - to be frank - my head is now
swimming with information.
My scenario seems reasonably straightforward : I would like to have two
file servers which mirror each others' data,
Hi,
We're making some progress on recovering our GFS disk..
We've created a small c app, which marked all bytes as 0xff on:
grp hdr: with offset 80
grp blk: with offset 120
But fsck takes ages to run (looks like weeks on our full disk). If we run
on a smaller disk the process completes
You don't have to have a mirrored LVM to do what youre trying to do.
You just need a common mountable share - typically a SAN or NAS. It
shouldn't be too hard to configure (and I've already done it). You
don't even *have* to have cluster suite - if you have a load balancer.
My brain isn't fast
The non-SAN option would be to use DRBD (http://www.drbd.org) and put
NFS, Samba, etc on top of the DRBD partition.
Chris
MARTI, ROBERT JESSE wrote:
You don't have to have a mirrored LVM to do what youre trying to do.
You just need a common mountable share - typically a SAN or NAS. It
Hi,
I'm trying to do the follow setup:
http://photos1.blogger.com/blogger/2723/1994/1600/plan.jpg
Extracted from this link:
http://linuxsutra.blogspot.com/2006/11/howto-gfs-gnbd.html
But, my GNBD Server has one dom0 and my nodes has two domU's, all
running RHEL 5.1 x86_84.
10.25.2.1
Hello all,
Sorry... wrong subject! I was with drbd on my head, but I don't like
him because I just can use 2 (two) nodes. The correct subject it's
gnbd and GFS!
I hope that someone can help me!
Regards
On Mon, 2008-03-31 at 15:52 -0300, Tiago Cruz wrote:
Hi,
I'm trying to do the follow
I was wondering if it is possible to run GFS on several machines with a
shared GFS LUN, but not use full clustering like RHCS. From the FAQs:
Can I setup GFS on a single node and then add additional nodes later?
Yes you can. For the initial single node setup, simply setup GFS
Danny Wall wrote:
I was wondering if it is possible to run GFS on several machines with a
shared GFS LUN, but not use full clustering like RHCS. From the FAQs:
First of all, what's the problem with having RHCS running? It doesn't
mean you have to use it to handle resources failing over. You
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