Hi,
Pretty new here with SAN's and Oracle RAC.
I had set up everything but because I wanted to enlarge one of the
disks used I removed everything and started over and stumble upon the
following:
There is one disk defined on the SAN. This is /dev/sda.
I haven't done fdisk yet so I also don't
The quick detect just looks for the superblock which is in the third
block of the device. The full detect looks up the superblock and then
the system directory. In your case it fails to locate the latter.
This is one of the quirks when using an unpartitioned disk and later
partitioning it. The
When measuring performance between raw and OCFS2 using Enterprise
Manager and taking half-hour snapshots, are physical reads/writes per
second directly comparable or should we only be looking at db block
changes, session logical reads, etc?
I've got iostat data and graphs of the storage when
Again, create a bug on oss.oracle.com/bugzilla and upload
the messages files from both nodes. It is hard to state anything
with incomplete information.
[EMAIL PROTECTED] wrote:
I decided to rebuild this from scratch today and got the same result.
two cluster node, both boxes remain connected
You are missing his point. He is not saying that fencing is the problem.
He is asking as to why the behavior differs between unplugging node 0
and node 1.
Alexei_Roudnev wrote:
It is not a bug; it is all by design.
Problem is that OCFSv2:
- can't support more than 1 interconnection link, so
I think, that direct comparation is useless. Raw IO on file should be the
same on file system and on raw device,
in any good clustered implementation (aside of block size - if you use
read/write size much bigger than file system block size,
raw will work faster).
But it all changes in real
Again, read his email.
Alexei_Roudnev wrote:
Behavior is not difference - if you broke node1-node0 connection, node1 will
self-reboot in the current design.
It dont matter what exactly you unplug - socket on nod1, socket on node2 or
inter-switch connection if it is used.
Add node-3 and
I read it. He is writing that
- if he unplug node1, node1 reboots and node0 replay journal. (what he want
to have)
- if he unplug node0, node1 reboots and node0 replay journal, which is bad
because node0 is not on the network. (he wants node1 to replay)
But there is not any way, in primitive o2cb
ocfs2: version 1.2.3
Linux: RedHat EL 4
Kernel: 2.6.9-42.0.2.ELsmp
top says a systemload of about 150 to 200 where no active processes are
running; the 150 webserver processes are waiting of something... The waits in
the top are below 2%.
The webserver stresstest is for knowing more about the
