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01-14-2004 10:03 AM
01-14-2004 10:03 AM
Is it possible to do the upgrade on one server and then make an ignite tape and use it to "upgrade" the other 2 servers?
ThenI just ahv to change the hostname and network details?
Will the volume groups and logical volumes on the other disks come up fine once the OS is "restored"?
Solved! Go to Solution.
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01-14-2004 10:17 AM
01-14-2004 10:17 AM
Solution- Mark as New
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01-14-2004 10:19 AM
01-14-2004 10:19 AM
Re: One ignite on different machines
Yes. This is what I usually do to clone the systems. However, the local volume groups and the logical volumes will not come up automatically. A bit of work is involved.
Here is what I suggest.
1. Create map files for volume groups on all the servers and preserve them. If these systems do not have many disks, I would suggest you use "-s" option with vgexport. To create map files use the syntax -
vgexport -p -v -s -m /tmp/vg0x.map vg0x
Copy these map files onto a different server.
2. Copy /etc/fstab also to the remote server.
Take ignite images of all the systems for backout plan.
1. UPgrade one server. Do not import the volume groups yet. Make sure all the customizations are done.
2. Take the ignite images and use them to upgrade other servers. I suggest you disconnect the cables to the storage while during the restoration.
3. Once the image is loaded, change the hostname and network details. Get them upto multi-user mode.
4. Connect the storage cables. Run "ioscan" followed by "insf" to create device files for the storage.
5. Copy the map files and fstabs that you previously stored from the remote system into /tmp. Create necessary device files for import. Ex.,
#mkdir /dev/vg0x
#mknod /dev/vg0x/group c 64 0x0n0000 (where n is a unique number)
#vgimport -v -s -m /tmp/vg0x.map vg0x
#vgchange -a y vg0x.
6. Add the entries from the /tmp/fstab
grep vg0x /tmp/fstab >> /etc/fstab
7. Create the mount points as required
mkdir /mount1
8. Issue mount -a to mount the filesystems.
-Sri
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01-14-2004 10:34 AM
01-14-2004 10:34 AM
Re: One ignite on different machines
Just one more question:
what if, like I said, the systems are identical?
The volume groups and logical volumes all are the same and reside on the same disk addresses.
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01-14-2004 10:38 AM
01-14-2004 10:38 AM
Re: One ignite on different machines
Even though the disks and VGs are identical, VGIDs are not going to match. For this reason, it is better to manually import the VGs.
-Sri
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01-14-2004 10:54 AM
01-14-2004 10:54 AM
Re: One ignite on different machines
Thanks.