-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [EMAIL PROTECTED] wrote: > 2007/4/4, Wei Chen <[EMAIL PROTECTED]>: >> 2) Is there any Debian specific LVM Howtos where I can learn >> debianized LVM? >> >> 3) How does LVM handle software upgrades in Debian? > > For extra Debian specific stuff, I have no idea... I think there is > nothing special. Google gave me http://deb.riseup.net/storage/lvm2/... > >> 4) Say I have 2 physical disks. Now I can put important data on disk 1 >> and put the backups of those important data on disk 2. In this way I >> have two copies of important data on different physical devices (Only >> some (not many) of my data are /important/.) Can I do similar using LVM? > > Ya you can create a snapshot logical volume that will register all the > new modifications done on the volume you want to back-up starting from > the time you took the snapshot (to back-up 500GB of data, you may need > only 1GB of snapshot just to record how things were before these new > modifications happened) and then, you can copy, handle, launch your > favorite back-up tool on this snapshot lv to back-up things as usual. > Read more info on > http://tldp.org/HOWTO/LVM-HOWTO/snapshots_backup.html. >
I wonder how much such a snapshot LV can slow down the disk write. I am sometimes a disk writer. In this case, I guess it could be better to divide a separate partition on one physical disk to store the backup. >> 5) Is there an easy and supported way to convert my current disks (and >> data on the disks) to LVM? > > As Doug said, and because lv are just normal partitions that are > mounted normally, you are just asking to move your current partitions > to new ones. I think you can do it by booting on a live-cd, preparing > new partitions, moving the files chroot into moved env, rewriting > fstab ... > I thought it was possible to boot from live cd, copy all files to one disk, say B (remove some of them to save space) and then do a LVM on another disk (A), then copy files to the LVM disk A, then make B a new LV to add to the existing VG. I realize later that hard links and special files should be specially treated so things are not that simple as thought. I decide then that a scratch install is really needed. I shall think of it when I have free time. Thank you. - -- Cheers, Wei Chen http://www.acplex.com/people/wchen/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGFJZrCIqXQV6BF28RAgksAKDYJvxlE32Q884si1VxRr7XnD1VJgCbBESy Jt3rm8N2D3W18V4d0rxPM94= =mLig -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
