Scot Jenkins wrote: > Anyone running LVM and have comments about the amount of overhead it > uses? Here's my setup: > > Debian woody 2.4.27 kernel w/LVM compiled in. Box his attached to a > jetstor filer that hands out a chunk of disks as a single scsi target. > The jetstor is doing RAID-5. I know little else about the filer, > someone else admins' it. > > dmesg shows: > SCSI device sda: 627932160 512-byte hdwr sectors (321501 MB) > > If is just run fdisk, create one partition and then run > "mke2fs -j -m1 /dev/sda1" I get: > > Filesystem 1k-blocks Used Available Use% Mounted on > /dev/sda1 309030804 32828 305858396 1% /jetstor > > > If I setup the disk via LVM (pvcreate, vgcreate, lvcreate) I get: > > Filesystem 1k-blocks Used Available Use% Mounted on > /dev/vg01/lv00 263191620 32828 260484924 1% /jetstor > > I get the same results whether I use the entire disk "/dev/sda" or > create a single partition of type "Linux LVM" (8e). > > Any idea why LVM takes about 45 GB of overhead? I just started using LVM on a slackware 10 box with two 200G hard drives. I first set up one drive under LVM and formated it with ext3 but the filesystem took a big enough chunk that I couldn't transfer the files from the almost full 200G hd. I ended up using reiserfs. with two 200G hd I have 398250112 1K blocks. Joseph Key _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota Help beta test TCLUG's potential new home: http://plone.mn-linux.org Got pictures for TCLUG? Beta test http://plone.mn-linux.org/gallery tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list