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тАО10-24-2005 04:20 AM
тАО10-24-2005 04:20 AM
Recovering a Trucluster from backup
You boot off a cd and vrestore everything (after relabeling drives, etc, etc. and assuring WWID's, LUNs, and OS Unit ID's are unchanged).
Now... you need to get those pesky "h" partitions restored to the boot drives.... Let us pretend that you were smart, and that you have the requisite clu_bdmgr.conf files at hand.
Question: if you are booted from a non-clustered OS image from the install CD... can you run:
clu_bdmgr -c SOME_DISK_HERE SOME_MEMBER_ID_HERE
and
clu_bdmgr -h SOME_DISK_HERE /backup/xxx-clu_bdmgr.conf
i.e. does clu_bdmgr work when you are booted off the CD?
If not, how the heck can you restore a trucluster?
Thanks,
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тАО10-24-2005 05:47 AM
тАО10-24-2005 05:47 AM
Re: Recovering a Trucluster from backup
this is described in Section 11.1.5 in the cluster administration guide.
greetings,
Michael
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тАО10-24-2005 06:41 AM
тАО10-24-2005 06:41 AM
Re: Recovering a Trucluster from backup
From the man page:
If the cluster is down, boot the clusterized kernel of one member to create a single-member cluster. You can use the -h option and specify /cluster/members/{memb}/boot_partition/etc/clu_bdmgr.conf or an appropriate CNX configuration file that you previously saved with the clu_bdmgr -d command. If you use the -h option with no argument, the command will get the CNX partition information from the cluster member where you are logged on.
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тАО10-26-2005 02:32 AM
тАО10-26-2005 02:32 AM
Re: Recovering a Trucluster from backup
Tricky part is that clu_bdmgr is not included on the install CD.
I tried attaching a PPT that outlined how to get around it (even tried compressing... but won't fit).
Here is the trick (need to chroot to your restored filesystem mount
chroot /mnt /sbin/sh
# dsfmgr ├в K (make device special files for sure)
# dsfmgr ├в vVF (make sure everything is in order)
# dsfmgr ├в vVF (run it again if they are not)
Now restore the CNX partition with clu_bdmgr
# clu_bdmgr -h dsk1 /cluster/members/member0/boot_partition/etc/clu_bdmgr.conf
# exit (to exit the chroot sh)
Note that if clu_bdmgr has some problem, you can use clu_partmgr instead
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тАО10-26-2005 03:22 AM
тАО10-26-2005 03:22 AM
Re: Recovering a Trucluster from backup
ivan.ferreira@gmail.com
Thanks in advance.