Most storage arrays can grow existing disks, which doesn't work as nicely if the disk has a partition. Making a PV out of the entire disk allows much easier PV/VG/LV expansion, without mucking with a partition table.
As for the training piece, I'd expect an admin would do some verification a disk is not in use before blindly assuming it's not in use, and overwriting data. There is no standard practice with how to create a PV, it depends on the site. On May 3, 2011, at 5:30 AM, "Moray Henderson" <moray.hender...@ict-software.org> wrote: > From: Speagle, Andy [mailto:andy.spea...@wichita.edu] > > > I’m trying to setup the partitioning section of my kickstarts in such a way > that rather than partitioning a disk and using /dev/sdX1 as the PV for my > root VG, that I can instead use the entire disk. > > > > The reason for doing this would be to make PV resizing a bit easier for > virtual machines. Otherwise, I must muck around with the partition table and > blah blah … not a show-stopper, but potentially dangerous for junior admins. > > > > I suspect that the functionality just isn’t there… but does anyone know the > magic syntax to get it to use the entire drive (aka. /dev/sdb) as a PV during > kickstart? > > > > Why do you need to resize PVs for virtual machines? You allocate the extra > space to your VM as another virtual drive or partition, then using LVM create > another Physical Volume for that drive, add that Physical Volume to your > Volume Group and Logical Volume, and extend the filesystem. No mucking > around with an existing partition table. > > > > I would be confused if I encountered a disk without a partition table – I’d > probably assume it wasn’t formatted at all. Better to train your junior > admins in standard practice? > > > > > > Moray. > > “To err is human; to purr, feline.” > > _______________________________________________ > Kickstart-list mailing list > Kickstart-list@redhat.com > https://www.redhat.com/mailman/listinfo/kickstart-list
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