I'm trying to figure out how to create an LXC using multiple LVM logical
volumes. I'd like to dohave the root filesystem of the LXC on its own
LV, the /var directory of the LXC on its own LV, and the /tmp directory
of the LXC on its own LV. Here is what I've done sofaron the host:
=====================================
root@reaver:~# vgdisplay vg_lxc1
--- Volume group ---
VG Name vg_lxc1
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 21
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 4
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size 261.70 GiB
PE Size 4.00 MiB
Total PE 66994
Alloc PE / Size 11264 / 44.00 GiB
Free PE / Size 55730 / 217.70 GiB
VG UUID Zb2ume-1Ty9-s8Ze-NEZc-7Vee-A3h7-A2IvGd
=====================================
=====================================
root@reaver:~# lvdisplay vg_lxc1
--- Logical volume ---
LV Path /dev/vg_lxc1/lv_ldap_var1
LV Name lv_ldap_var1
VG Name vg_lxc1
LV UUID VfCZgf-ZOGA-lJgn-GFO8-fOAd-IMzl-QF32aY
LV Write Access read/write
LV Creation host, time reaver, 2013-11-30 13:46:11 -0700
LV Status available
# open 1
LV Size 10.00 GiB
Current LE 2560
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:3
--- Logical volume ---
LV Path /dev/vg_lxc1/lv_ldap_tmp1
LV Name lv_ldap_tmp1
VG Name vg_lxc1
LV UUID GDru3y-oLJB-Iv06-tjv3-wHuq-p8Fi-xBUscf
LV Write Access read/write
LV Creation host, time reaver, 2013-11-30 13:46:16 -0700
LV Status available
# open 1
LV Size 4.00 GiB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:4
--- Logical volume ---
LV Path /dev/vg_lxc1/lv_ldap_root1
LV Name lv_ldap_root1
VG Name vg_lxc1
LV UUID u1tAUH-t7CB-tEdp-M84c-H93p-9CEn-7xXzAM
LV Write Access read/write
LV Creation host, time reaver, 2014-02-10 20:19:30 -0700
LV Status available
# open 1
LV Size 10.00 GiB
Current LE 2560
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:2
=====================================
I manually created the LV's that I would use for /tmp (lv_ldap_tmp1) and
/var (lv_ldap_var1), but the LV for the rootfs (lv_ldap_root1) I created
using the lxc-create command:
=====================================
lxc-create -n ldap_baneling -t debian -B lvm --vgname vg_lxc1 --lvname
lv_ldap_root1 --fstype xfs --fssize 10G
=====================================
This seems to work correctly for the rootfs, but I can't seem to get the
container to use the /var and /tmp LV's. This is what I've changed in
my container's config file:
=====================================
lxc.mount.entry = /var/lib/lxc/ldap_baneling/rootfs/var
/var/lib/lxc/ldap_baneling/rootfs/var none bind 0 0
lxc.mount.entry = /var/lib/lxc/ldap_baneling/rootfs/tmp
/var/lib/lxc/ldap_baneling/rootfs/tmp none bind 0 0
=====================================
I've mounted the LV's under their respective directories. However, when
I run df /var or df /tmp under the container it appears that that those
directories are still mounted under the rootfs. Am I just going about
this incorrectly? Any direction would be appreciated.
Thanks,
Josh
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