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02-13-2003 01:42 PM
02-13-2003 01:42 PM
Installation question
Thanks
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02-13-2003 01:46 PM
02-13-2003 01:46 PM
Re: Installation question
If it is data that you need after the installation, you can attempt to vgimport those disks. 'man vgimport' for more information.
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02-13-2003 01:46 PM
02-13-2003 01:46 PM
Re: Installation question
You can preserve the data as well as VG information (do a vgimport after install) on other disks.
Make sure you 've selected only one disk for installation.
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02-13-2003 01:47 PM
02-13-2003 01:47 PM
Re: Installation question
No & Yes.
No, only the disk(s) designated for vg00 will be overwritten.
Yes, the VG info - NOT DATA -on all non-vg00 disks would be lost to the new OS. One normally creates current conf & map files, places these on another server to retrieve after install - to be used to vgimport those VGs back.
Rgds,
Jeff
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02-13-2003 01:48 PM
02-13-2003 01:48 PM
Re: Installation question
The targeted disk *only* will be overwritten ("destroyed") and thus knowledge of the remaining disks "lost".
To recover the data on the other disks, as you have deduced, do a 'vgimport' on them afterwards. Thus, is it preferable to preceed your installtion with:
# vgexport -m /tmp/mapfile.vgNN -s -p -v vgNN
...and preserve the mapfile(s) for subsequent 'vgimport;.
Regards!
...JRF...
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02-13-2003 01:50 PM
02-13-2003 01:50 PM
Re: Installation question
Thanks.
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02-13-2003 01:51 PM
02-13-2003 01:51 PM
Re: Installation question
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02-13-2003 01:52 PM
02-13-2003 01:52 PM
Re: Installation question
If you really want to be paranoid and make absolutely sure no data from your external disks will be overwritten, then remove the cable(s) going to your external disk array. This will allow the installation process to see ONLY the internal disk(s), assuming that is what you want to install to.
After you are done, reattach your external disks and do what you need with those disks.
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02-13-2003 01:58 PM
02-13-2003 01:58 PM
Re: Installation question
Patrick's low-tech solution for a high-tech problem is elegant in it's simplicity. Something that can be in short supply at times in the IT world.
Cheers,
Jeff
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02-13-2003 02:35 PM
02-13-2003 02:35 PM
Re: Installation question
Technically, you could have it destroy data on all your disks, but you would have to specifically tell the install process to install choose all the disks to do it.
I like and use Patrick's suggestion all the time.
If I'm worried about it, I physically disconnect the disks I want to protect.
A little paranoia is a good thing, I bet we've all been bit when not paranoid enough.
HTH,
Kel
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02-13-2003 03:37 PM
02-13-2003 03:37 PM
Re: Installation question
And note the voulme group information will not be imported by itself. You'll have to import all the volume groups from disk array if you wish to have original data back from disk array.
Cheers
rajeev
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02-14-2003 04:49 AM
02-14-2003 04:49 AM
Re: Installation question
non-VG00 Filesystem, PC or another server. Good one to have is:
strings /etc/lvmtab > /dump/upgrade2003/lvmtab.out
Even though you will have the ???tee??? stuff from the vgexport in vgexp1.out and vgexp2.out etc???.
BEFORE UPGRADE EXAMPLE
Make sure here you have a -p
vgexport -p -v -m /dump/upgrade2003/vg01.map /dev/vg01 |tee /dump/upgrade2003/vgexp1.out
vgexport -p -v -m /dump/upgrade2003/vg02.map /dev/vg02 |tee /dump/upgrade2003/vgexp2.out
AFTER UPGRADE EXAMPLE
mkdir /dev/vg01
mkdir /dev/vg02
mknod /dev/vg01/group c 64 0x010000
mknod /dev/vg02/group c 64 0x020000
vgimport ???p ???v ???m /tmp/vg01.map /dev/vg01 /dev/dsk/c2t8d0 /dev/dsk/c2t9d0 (With ???p dry run)
vgimport ???v ???m /tmp/vg01.map /dev/vg01 /dev/dsk/c2t8d0 /dev/dsk/c2t9d0 (With out it will do it)
vgimport ???p ???v ???m /tmp/vg02.map /dev/vg02 /dev/dsk/c2t10d0 (With ???p dry run)
vgimport ???v ???m /tmp/vg02.map /dev/vg02 /dev/dsk/c2t10d0 (With out it will do it)
vgchange ???ay /dev/vg01
vgchange ???ay /dev/vg02
add Files systems to the fstab (Cut & Paste into the new fstab)
mkdir for each mount point
mount ???a
I hope this helps
Cheers
RICH