[linux-lvm] RAID, LVM and dm_crypt, please confirm setup
Sisko
cisco66 at gmx.de
Sun Nov 21 12:19:27 UTC 2004
Hello group !
I would really appreciate it, if someone with more knowledge than me could
confirm, if my setup is ok.
I have (at home) the following setup for my data discs:
2x 40 GB RAID1 --> /dev/md0
2x 80 GB RAID1 --> /dev/md1
2x160 GB RAID1 --> /dev/md2
These are part of volume group vg00, consisting of 9 logical volumes
lv00...lv09
Now i set up crypt devices with cryptsetup and named these crypt devices
clv00...clv09.
So my directory /dev/mapper looks like:
brw-r----- 1 root root 253, 10 2004-11-18 22:54 clv00
brw-r----- 1 root root 253, 11 2004-11-18 22:54 clv01
brw-r----- 1 root root 253, 12 2004-11-18 22:54 clv02
brw-r----- 1 root root 253, 13 2004-11-18 22:54 clv03
brw-r----- 1 root root 253, 14 2004-11-18 22:54 clv04
brw-r----- 1 root root 253, 15 2004-11-18 22:54 clv05
brw-r----- 1 root root 253, 16 2004-11-18 22:54 clv06
brw-r----- 1 root root 253, 17 2004-11-18 22:54 clv07
brw-r----- 1 root root 253, 18 2004-11-18 22:54 clv08
brw-r----- 1 root root 253, 19 2004-11-18 22:54 clv09
crw------- 1 root root 10, 63 2004-06-24 17:42 control
brw-r----- 1 root root 253, 20 2004-11-18 22:54 swap0
brw-r----- 1 root root 253, 21 2004-11-18 22:54 swap1
brw------- 1 root root 253, 0 2004-11-18 22:53 vg00-lv00
brw------- 1 root root 253, 1 2004-11-18 22:53 vg00-lv01
brw------- 1 root root 253, 2 2004-11-18 22:53 vg00-lv02
brw------- 1 root root 253, 3 2004-11-18 22:53 vg00-lv03
brw------- 1 root root 253, 4 2004-11-18 22:53 vg00-lv04
brw------- 1 root root 253, 5 2004-11-18 22:53 vg00-lv05
brw------- 1 root root 253, 6 2004-11-18 22:53 vg00-lv06
brw------- 1 root root 253, 7 2004-11-18 22:53 vg00-lv07
brw------- 1 root root 253, 8 2004-11-18 22:53 vg00-lv08
brw------- 1 root root 253, 9 2004-11-18 22:53 vg00-lv09
These crypt devices are mounted and presented via Samba.
In fact, everything is working fine and out of the box.
The "problem" is:
When i try to extend one logical volume, i have to do it this way:
1) unmount the device on server and client side
2) stop samba
3) lvextend -L+5G /dev/vg00/lv00 # not clv00 !
4) e2fsck resize2fs /dev/mapper/clv00-f /dev/mapper/clv00 # now the
crypto device !
5) resize2fs /dev/mapper/clv00 # again the crypto device
6) mount
7) finish
What i'm a bit afraid of is the fact that i once have to touch the crypto
device and once the "normal" logical volume. It is working and i have now
problems, but is this really the right way and supported ?
I could imagine that other people find this configuration interesting too, so
maybe this could be an item for the LVM-HOWTO (ie under item 13, recipes) or
so.
Thanks in advance !
Kernel 2.6.9 vanilla
~# lvm version
LVM version: 2.00.24 (2004-09-16)
Library version: 1.00.17-ioctl (2004-04-19)
Driver version: 4.1.0
~# dmsetup --version
Library version: 1.00.17-ioctl (2004-04-19)
Driver version: 4.1.0
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