Details have faded, but this is what I remember from LVM. I have used LMV for a few years before dropping it. It didn't really work for me because: 1. I am greedy and always declared 100% of the capacity as available, 2. I am cheap and adding a physical drive was not always possible on my gear, 3. I am a coward and resizing the ext2/3 filesystem after enlarging a VG made me sweat a lot. But obviously I am also lucky because I never had 4. a physical disk crash, an issue from which LVM is not designed to recover. And when you have 2 PVs as a single big filesystem, you lose data on both the failed drive, and the ok drive. (Snapshotting is fine, but you need available space, see point 1.)
After using it, I came to the conclusion that LVM would be great if I were a sysadmin having to provision homedirs and data volumes all the time for projects and people at the University, over a large pool of HDDs. But I was not. The only feature of LVM I really loved was its ability to recognize drives by a signature, in an era where linux was befuddled by reboots and could randomly reshuffle hard drive names (hda to hdb or sda). But this is long gone. If you care for another headache, I've found this thread at serverfault: http://serverfault.com/questions/279571/lvm-dangers-and-caveats -- epoch1970 Daily dose delivered by: 3 SB Classic, 1 SB Boom iPeng (iPhone + iPad) Squeezebox Server 7.6 (Debian 5.0) with plugins: MusicIP Server Power Control by Gordon Harris WeatherTime by Martin Rehfeld IRBlaster by Gwendesign (Felix) Find cover art by bpa BBC iPlayer, SwitchPlayer by Triode PowerSave by Jason Holtzapple TrackStat, Song Info, Song Lyrics by Erland Isaksson SaverSwitcher, ContextMenu by Peter Watkins. ------------------------------------------------------------------------ epoch1970's Profile: http://forums.slimdevices.com/member.php?userid=16711 View this thread: http://forums.slimdevices.com/showthread.php?t=89504
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