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тАО04-08-2003 12:07 PM
тАО04-08-2003 12:07 PM
VG00 recovery using Ignite
I have a system that has both internal and external disk. I am replacing the internal disks with new ones that will remain internal. The current internal disk holds VG00 and the external disk VG15. I will be using Ignite to restore VG00 to the new disk. I want to know if there are any gotcha's to be aware of. I have been told that I need to backup some files which will indicate to the system (once it is restored) that it has external disk (VG15) available to it. Apparently if I don't do this it will not recognise the fact that it has external disk after the restore.
Advise please.
Paul.
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тАО04-08-2003 12:29 PM
тАО04-08-2003 12:29 PM
Re: VG00 recovery using Ignite
'Ignite' will do a preview-mode 'vgexport' of all volume groups when you create a 'make_tape_recovery' tape. The mapfiles from this operation will be written to the '/etc/lvmconf' directory as '/etc/lvmconf/vgNN.mapfile'.
If the pv_paths to the various volume groups do not change as a result of the subsequent cold-installation process, then 'Ignite' will utilize these mapfiles to automatically 'vgimport' your non-vg00 volume groups. If, however, the physical disk's device files change (not uncommon), then you will need to manually 'vgimport' your non-vg00 volume groups. In this case, you might want knowledge of the presence of these mapfiles.
*However*, you should remember that the most basic LVM mapfile is nothing more than a file of records with a (minor) number for the volume group's logical volume followed by a blank and the logical volume name you wish to use:
1 lvol1
2 lvol2
3 mylvol
Regards!
...JRF...
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тАО04-08-2003 12:30 PM
тАО04-08-2003 12:30 PM
Re: VG00 recovery using Ignite
Ignite/UX will back up the other VG configuration information.
What you can do to be on the safe side is do a:
# vgexport -v -p -m mapfile -s vgname
Take this information and transfer it somewhere. Then if your ignite doesn't bring the VG back, you can use this file to help in reimporting the VG. 'man vgexport' and 'man vgimport' for more information.
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тАО04-08-2003 12:54 PM
тАО04-08-2003 12:54 PM
Re: VG00 recovery using Ignite
Paul
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тАО04-08-2003 01:01 PM
тАО04-08-2003 01:01 PM
Re: VG00 recovery using Ignite
Do yourself a favor and download a current version of Ignite:
http://www.software.hp.com/products/IUX/download.html
'make_recovery' is being obsolesced. In its place, use the much more robust 'make_tape_recovery':
To create an archive image of vg00, do:
# make_tape_recovery -x inc_entire=vg00 -I -v -a /dev/rmt/0mn
The '-I' option of 'make_tape_recovery' is the *same* as the '-i' option of 'make_recovery'. '-I' causes the Ignite process to be interactive when you (later) boot from the Ignite tape.
Regards!
...JRF...