From 070f7171314bc25b9443c1130ef697eafea33b4a Mon Sep 17 00:00:00 2001 From: Zdenek Kabelac Date: Fri, 28 Oct 2011 20:36:05 +0000 Subject: [PATCH] Continue with lvcreate man page update Already in WHATS_NEW. --- man/lvcreate.8.in | 50 ++++++++++++++++++++++++----------------------- 1 file changed, 26 insertions(+), 24 deletions(-) diff --git a/man/lvcreate.8.in b/man/lvcreate.8.in index 2bca29faf..d5400c9fe 100644 --- a/man/lvcreate.8.in +++ b/man/lvcreate.8.in @@ -304,44 +304,46 @@ Snapshot volumes are zeroed always. Warning: trying to mount an unzeroed logical volume can cause the system to hang. .SH Examples -"lvcreate -i 3 -I 8 -L 100M vg00" tries to create a striped logical -volume with 3 stripes, a stripesize of 8KB and a size of 100MB in the volume -group named vg00. The logical volume name will be chosen by lvcreate. +Creates a striped logical volume with 3 stripes, a stripesize of 8KB +and a size of 100MB in the volume group named vg00. +The logical volume name will be chosen by lvcreate: +.sp +.B lvcreate -i 3 -I 8 -L 100M vg00 -"lvcreate -m1 -L 500M vg00" tries to create a mirror logical volume -with 2 sides with a useable size of 500 MiB. This operation would -require 3 devices - two for the mirror devices and one for the disk -log. +Creates a mirror logical volume with 2 sides with a useable size of 500 MiB. +This operation would require 3 devices (or option --alloc anywhere) - two +for the mirror devices and one for the disk log. +.sp +.B lvcreate -m1 -L 500M vg00 -"lvcreate -m1 --mirrorlog core -L 500M vg00" tries to create a mirror logical volume -with 2 sides with a useable size of 500 MiB. This operation would -require 2 devices - the log is "in-memory". +Creates a mirror logical volume with 2 sides with a useable size of 500 MiB. +This operation would require 2 devices - the log is "in-memory". +.sp +.B lvcreate -m1 --mirrorlog core -L 500M vg00 -"lvcreate --size 100m --snapshot --name snap /dev/vg00/lvol1" -.br -creates a snapshot logical volume named /dev/vg00/snap which has access to the +Creates a snapshot logical volume named /dev/vg00/snap which has access to the contents of the original logical volume named /dev/vg00/lvol1 at snapshot logical volume creation time. If the original logical volume contains a file system, you can mount the snapshot logical volume on an arbitrary directory in order to access the contents of the filesystem to run a backup while the original filesystem continues to get updated. +.sp +.B lvcreate --size 100m --snapshot --name snap /dev/vg00/lvol1 -"lvcreate --virtualsize 1T --size 100M --snapshot --name sparse vg1" -.br -creates a sparse device named /dev/vg1/sparse of size 1TB with space for just +Creates a sparse device named /dev/vg1/sparse of size 1TB with space for just under 100MB of actual data on it. -.br +.sp +.B lvcreate --virtualsize 1T --size 100M --snapshot --name sparse vg1 -"lvcreate -L 64M -n lvol1 vg00 /dev/sda:0-7 /dev/sdb:0-7" -.br -creates a linear logical volume "vg00/lvol1" using physical extents +Creates a linear logical volume "vg00/lvol1" using physical extents /dev/sda:0-7 and /dev/sdb:0-7 for allocation of extents. -.br +.sp +.B lvcreate -L 64M -n lvol1 vg00 /dev/sda:0-7 /dev/sdb:0-7 -"lvcreate --type raid5 -L 5G -i 3 -I 64 -n my_lv vg00" -.br -creates a 5GiB RAID5 logical volume "vg00/my_lv", with 3 stripes (plus +Creates a 5GiB RAID5 logical volume "vg00/my_lv", with 3 stripes (plus a parity drive for a total of 4 devices) and a stripesize of 64kiB. +.sp +.B lvcreate --type raid5 -L 5G -i 3 -I 64 -n my_lv vg00 .SH SEE ALSO .BR lvm (8),