I create two drbd block device, mount drbd1 as os disk to rootfs, drbd2 is planed to format in lxc. it works fine on ubuntu 16.04, lxc 2.x, drbd 8.4, centos6
after upgrading the following software , lxc can still run, but drbd device don’t show up in lxc container.
Could you give me some advice?
# current config
host: ubuntu 20.04 server
lxc: 4.0.6
lxc container: centos7
drbd version: 8.4
/usr/share/lxc/config/common.conf is using default version
drbd block devices show up on host:
root@f1:/home/neo# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop1 7:1 0 55.5M 1 loop /snap/core18/2246
loop2 7:2 0 61.9M 1 loop /snap/core20/1169
loop3 7:3 0 67.2M 1 loop /snap/lxd/21835
loop4 7:4 0 32.3M 1 loop /snap/snapd/12704
loop5 7:5 0 70.3M 1 loop /snap/lxd/21029
loop6 7:6 0 32.5M 1 loop /snap/snapd/13640
loop7 7:7 0 55.5M 1 loop /snap/core18/2253
loop8 7:8 0 61.9M 1 loop /snap/core20/1242
sda 8:0 0 32G 0 disk
├─sda1 8:1 0 1M 0 part
├─sda2 8:2 0 1G 0 part /boot
└─sda3 8:3 0 31G 0 part
└─ubuntu--vg-ubuntu--lv 253:0 0 30G 0 lvm /
sdb 8:16 0 32G 0 disk
└─nevg1-nelv1 253:1 0 32G 0 lvm
└─drbd1 147:1 0 32G 0 disk /mnt/test.neo
sdc 8:32 0 32G 0 disk
└─nevg2-nelv2 253:2 0 32G 0 lvm
└─drbd2 147:2 0 32G 0 disk
drbd block devices don’t show up show up on lxc:
neo@f1:~$ sudo lxc-attach -n test.neo
[root@test neo]# lsblk
lsblk: dm-1: failed to get device path
lsblk: dm-1: failed to get device path
lsblk: dm-2: failed to get device path
lsblk: dm-0: failed to get device path
lsblk: dm-2: failed to get device path
lsblk: dm-0: failed to get device path
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop1 7:1 0 55.5M 1 loop
loop8 7:8 0 61.9M 1 loop
sdb 8:16 0 32G 0 disk
loop6 7:6 0 32.5M 1 loop
loop4 7:4 0 32.3M 1 loop
loop2 7:2 0 61.9M 1 loop
sdc 8:32 0 32G 0 disk
loop7 7:7 0 55.5M 1 loop
sda 8:0 0 32G 0 disk
|-sda2 8:2 0 1G 0 part
|-sda3 8:3 0 31G 0 part
`-sda1 8:1 1M 0 part
loop5 7:5 0 70.3M 1 loop
loop3 7:3 0 67.2M 1 loop
but /proc/partitions show drbd block devices
[root@test neo]# cat /proc/partitions | grep drbd
147 1 33549276 drbd1
147 2 33549276 drbd2
this is lxc config:
lxc.net.0.type = phys
lxc.net.0.link = ens20
lxc.net.0.hwaddr = 66:79:48:3e:5b:b3
lxc.net.0.flags = up
lxc.net.0.ipv4.address = 172.20.6.25/24
lxc.net.0.ipv4.gateway = 172.20.6.1
lxc.net.0.name = eth0
lxc.net.1.type = veth
lxc.net.1.link = lxcbr0
lxc.net.1.hwaddr = fe:54:34:0f:3a:5d
lxc.net.1.flags = up
lxc.net.1.ipv4.address = 169.254.0.102/24
lxc.net.1.name = eth1
lxc.rootfs.path = /mnt/test.neo
lxc.include = /usr/share/lxc/config/common.conf
lxc.arch = x86_64
lxc.uts.name = test.neo