上下文：我有一个 proxmox 集群，其中的卷组与 drbd 共享，用于 VM - KVM。
我在使用 drbd 时遇到了问题。事实上，当一个节点断开连接时，不同节点之间的关联链接就会断开。影响如下：
- 状态 drbd 节点：cs: WFConnection / cs: Standalone
- 如果我们需要重新启动 drbd 并且重新同步服务正常（cs：已连接），我会执行以下操作：
我停止正在运行的虚拟机（因为：错误：模块 drbd 正在使用中）我禁用了 vg（使用 vgchange -an）我重新启动 drbd 服务并重新同步运行
配置如下：
/etc/drbd.conf：
# You can find an example in /usr/share/doc/drbd.../drbd.conf.example
include "drbd.d/global_common.conf";
include "drbd.d/*.res";
全局_公共.conf：
global { usage-count no; }
common {
protocol C;
startup {
degr-wfc-timeout 120;
# become-primary-on proxmox001;
become-primary-on both;
}
disk {
}
net {
allow-two-primaries;
after-sb-0pri discard-zero-changes;
after-sb-1pri discard-secondary;
after-sb-2pri disconnect;
}
syncer {
verify-alg md5;
rate 30M;
}
}
R0.res：
resource r0 {
protocol C;
on proxmox001 {
device /dev/drbd0;
disk /dev/mapper/pve-lv_data;
address 192.168.0.1:7788;
meta-disk internal;
}
on proxmox002 {
device /dev/drbd0;
disk /dev/mapper/pve-lv_data;
address 192.168.0.2:7788;
meta-disk internal;
}
}
当物理主机不稳定时，我失去了 drbd 链接。
在正常情况下，/proc/drbd ：
GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by root@proxmox001, 2013-04-24 12:55:32
0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r-----
ns:421142 nr:55715 dw:8498959 dr:10994034 al:1144 bm:420 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:0
当不稳定时，/proc/drbd 返回：
cs:Standalone or cs:WFConnection st:Secondary/Unknown
当我重新启动 DRBD Sync 时，出现了 UpToDate 错误或
ERROR: Module drbd is in use proxmox
我尝试了不同的测试然后谷歌建议：
root@proxmox001:~# vgscan
Reading all physical volumes. This may take a while...
Found volume group "pve" using metadata type lvm2
Found volume group "drbdvg" using metadata type lvm2
root@proxmox001:~# vgchange -an /dev/drbdvg
Can't deactivate volume group "drbdvg" with 1 open logical volume(s)
root@proxmox001:~# /sbin/vgchange -a y
4 logical volume(s) in volume group "pve" now active
2 logical volume(s) in volume group "drbdvg" now active
root@proxmox001:~# cat /proc/drbd
version: 8.3.13 (api:88/proto:86-96)
GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by root@proxmox001, 2013-04-24 12:55:32
0: cs:WFConnection ro:Primary/Unknown ds:UpToDate/DUnknown C r-----
ns:0 nr:0 dw:8523047 dr:11025118 al:1147 bm:421 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:8080
root@proxmox001:~# drbdadm connect all
root@proxmox001:~# drbdadm verify r0
0: State change failed: (-15) Need a connection to start verify or resync
Command 'drbdsetup 0 verify' terminated with exit code 11
root@proxmox001:~# cat /proc/drbd
version: 8.3.13 (api:88/proto:86-96)
GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by root@proxmox001, 2013-04-24 12:55:32
0: cs:WFConnection ro:Primary/Unknown ds:UpToDate/DUnknown C r-----
ns:0 nr:0 dw:8523371 dr:11025534 al:1147 bm:421 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:8288
root@proxmox001:~# drbdadm secondary all
0: State change failed: (-12) Device is held open by someone
Command 'drbdsetup 0 secondary' terminated with exit code 11
root@proxmox001:~# drbdadm up r0
0: Failure: (124) Device is attached to a disk (use detach first)
Command 'drbdsetup 0 disk /dev/mapper/pve-lv_data /dev/mapper/pve-lv_data internal --set-defaults --create-device' terminated with exit code 10
root@proxmox001:~# service drbd stop
Stopping all DRBD resources:/dev/drbd0: State change failed: (-12) Device is held open by someone
ERROR: Module drbd is in use
.
root@proxmox001:~# drbdadm detach r0
0: State change failed: (-2) Need access to UpToDate data
Command 'drbdsetup 0 detach' terminated with exit code 17
root@proxmox001:~# vgchange -an /dev/drbdvg
0 logical volume(s) in volume group "drbdvg" now active
root@proxmox001:~# service drbd stop
Stopping all DRBD resources:.
root@proxmox001:~# service drbd start
Starting DRBD resources:[ d(r0) s(r0) n(r0) ].
但我总会遇到生产中断的情况……
您有解决方案来绕过这个问题吗？
非常感谢 ！
编辑 ：
如果我将 global_common 文件配置中的磁盘块替换为：
disk {
fencing resource-only;
}
如果我在任何主机上都有正在运行的虚拟机，我只需要重新启动 drbd 即可重建关联同步链接。
但是，如果我在两个或所有主机上都有正在运行的虚拟机，那么我已经与顶部线程相同了。
谢谢