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тАО10-04-2005 10:49 PM
тАО10-04-2005 10:49 PM
Disk Mirroring Issue
I'm trying to configure a HP N4000 node or server (in a cluster) to use disk mirroring.
I've done a lvdisplay -v /dev/vg00 and its returned two hardware devices:
a) /dev/dsk/c1t6d0, and
b) /dev/dsk/c2t6d0
doing an lvdisplay -v on all logical volumes (found from a bdf), we see that all lvol's belong to c1t6d0.
Therefore, can I assume that c2t6d0 is in fact the spare the disk? It tells me it has 2170 of 2170 Free space.
However, my concern is as follows:
Because this node is in a cluster, when I do a checkconf, we get this warning:
Warning: The disk at /dev/dsk/c0t1d0 on node
So, what does this mean? why didnt c0t1d0 appear in the pvdisplay or vgdisplay or even lvdisplay commands??
Thanks for any assistance
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тАО10-04-2005 10:54 PM
тАО10-04-2005 10:54 PM
Re: Disk Mirroring Issue
Check option -k, this will limit the disk checking to disks identified in config file.
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тАО10-04-2005 10:56 PM
тАО10-04-2005 10:56 PM
Re: Disk Mirroring Issue
A CDROM or DVDROM?
All that cmcheckconf is telling you is that the disk at that address has not had pvcreate performed upon it, so it cannot be used in the cluster.
This also means it is not part of a VG.
As it says, just a warning
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тАО10-04-2005 10:59 PM
тАО10-04-2005 10:59 PM
Re: Disk Mirroring Issue
Thanks for your confirmation.
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тАО10-04-2005 11:01 PM
тАО10-04-2005 11:01 PM
Re: Disk Mirroring Issue
Start with ioscan -fnCdisk to locate disks on your system before moving on to pvdisplay commands.
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тАО10-04-2005 11:04 PM
тАО10-04-2005 11:04 PM
Re: Disk Mirroring Issue
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тАО10-05-2005 01:05 AM
тАО10-05-2005 01:05 AM
Re: Disk Mirroring Issue
##
# mirror_root_disk.ksh SDA 10/23/03
#
# Starting conditions:
# cLEFT is already built correctly.
# cRIGHT is "empty" and unassigned.
#
# Define disks
cLEFT=c0t6d0 # 1/0/0/3/0.6.0
cRIGHT=c4t6d0 # 1/0/1/0/0/1/1.6.0
# Make right disk bootable
pvcreate -B /dev/rdsk/${cRIGHT}
vgextend vg00 /dev/dsk/${cRIGHT}
mkboot -l /dev/rdsk/${cRIGHT} # boot disk only
mkboot -a "hpux -lq (;0)/stand/vmunix" /dev/rdsk/${cRIGHT}
# Mirror the LVs
vgdisplay -v vg00 | grep "LV Name" | awk '{print $3}' | while read LV
do
lvextend -m 1 $LV /dev/dsk/${cRIGHT}
#lvdisplay $LV
done
#
lvlnboot -R # Update BDRAs
lvlnboot -v # Shows boot status
# Verify..
lifcp /dev/dsk/${cLEFT}:AUTO -
lifcp /dev/dsk/${cRIGHT}:AUTO -
lifls /dev/dsk/${cLEFT}
lifls /dev/rdsk/${cRIGHT}
setboot