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Operating Systems Solaris Serial Split Brain detected in solaris10 Post 302409913 by reborg on Friday 2nd of April 2010 11:10:04 PM
Old 04-03-2010
That's very good.

Now a couple of observations on your setup.

1. Mixing internal and external disks in a volume is a bad idea ( prefereably not in the same DG )

2. If you have to use the internal disks put the log plex on the external disks with one data disk and the spare on the internal disks.

The reason for both of the above is that if you get a failure it is more likely to be consistent. Even if the external disks all fail you should be able to pull the internal disks and reattach the external ones. You will be able to rebuild the one internal data disk from parity.

If you can avoid using the internal disk at all then do. A failure of the external disks is likely to be self consistent in such a scenario and is much easier to recover.

3. Get the SCSI csi controller checked and check for patches for bugs that cause controller failure-like sysmptoms it is likely the original cause of your problem was one or other.

---------- Post updated at 04:10 AM ---------- Previous update was at 04:06 AM ----------

Quote:
Originally Posted by upengan78
That worked fine as well. no errors at mount command. Also, I can create files/ directories/rmdir ..worked out fine.


Many thanks! Appreciate your help really!!...God bless you.
You're welcome. It's always rewarding to get to the bottom of a problem and all the more enjoyable if the person at the other end doesn't panic or get flustered.
 

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vxreattach(1M)															    vxreattach(1M)

NAME
vxreattach - reattach disk drives that have once again become accessible SYNOPSIS
/etc/vx/bin/vxreattach [-br ] [accessname...] /etc/vx/bin/vxreattach -c accessname DESCRIPTION
The vxreattach utility reattaches disks to the disk group they were in and retains the same media name. This operation may be necessary if a disk has a transient failure, or if Veritas Volume Manager (VxVM) starts with some disk drivers unloaded and unloadable. Disks then enter the failed state. If the problem is fixed, vxreattach may be able to reattach the disks without plexes being flagged as stale, as long as the reattach happens before any volumes on the disk are started. vxreattach tries to find a disk in the same disk group with the same disk ID for the disk(s) to be reattached. The reattach operation may fail even after finding the disk with the matching disk ID if the original cause (or some other cause) for the disk failure still exists. vxreattach is usually invoked by vxdiskadm when performing disk recovery. It is not intended to be run directly by an administrator. OPTIONS
-b Performs the reattach operation in the background. -c Checks if a reattach is possible. No operation is performed, but the name of the disk group and disk media name at which the disk can be reattached is displayed. -r Tries to recover stale plexes of any volumes on the failed disk. It does this by calling vxrecover. EXIT CODES
A zero exit status is returned if the reattach is performed; non-zero is returned otherwise. See vxintro(1M) for a list of standard exit codes. EXAMPLES
Check if reattachment of disk c1t2d0 is possible: /etc/vx/bin/vxreattach -c c1t2d0 If reattachment is possible, vxreattach returns with an exit status of 0 and displays the disk group name and disk media name. If reat- tachment is not possible, vxreattach returns an exit status of 2 and displays an error. Attempt to reattach the disk in the foreground and try to recover stale plexes of any volumes on the disk: /etc/vx/bin/vxreattach -r c1t2d0 If the reattachment is successful, vxreattach returns an exit status of 0. Otherwise, if an error occurs, vxreattach returns a non-zero exit code as defined on vxintro(1M). FILES
/etc/default/vxplex Standard defaults file that can be used to determine whether FastResync is used when attaching plexes. See vxplex(1M) for details. SEE ALSO
vxdiskadm(1M), vxintro(1M), vxplex(1M), vxrecover(1M) VxVM 5.0.31.1 24 Mar 2008 vxreattach(1M)
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