![重新启动后会出现 DRBD,并带有 Connected Diskless/Diskless](https://linux22.com/image/149760/%E9%87%8D%E6%96%B0%E5%90%AF%E5%8A%A8%E5%90%8E%E4%BC%9A%E5%87%BA%E7%8E%B0%20DRBD%EF%BC%8C%E5%B9%B6%E5%B8%A6%E6%9C%89%20Connected%20Diskless%2FDiskless.png)
无人值守的断电后,遇到重大问题,每次重新启动数据库RB提出连接无盘/无盘地位。
主要问题:
- dump-md 响应:发现元数据“不干净”
- apply-al 命令以退出代码 20 终止,并显示消息 open(/dev/nvme0n1p1) 失败:设备或资源繁忙
- drbd 资源配置无法独占打开。
关于环境:
此 drbd 资源通常用作 lvm 的块存储,它配置为 proxmox ve 5.3-8 集群的(共享 lvm)存储。在 drbd 块设备之上配置了 lvm。正如在 drbd 主机 lvm 配置上建议的那样,drbd 服务下面的设备 (/dev/nvme0n1p1) 被过滤掉(/etc/lvm/lvm.conf 如下所示)
drbd下的设备是PCIe NVMe设备
它有一些由 systemctl 显示的额外属性:
root@pmx0:~# systemctl list-units | grep nvme
sys-devices-pci0000:00-0000:00:01.1-0000:0c:00.0-nvme-nvme0-nvme0n1-nvme0n1p1.device loaded active plugged /sys/devices/pci0000:00/0000:00:01.1/0000:0c:00.0/nvme/nvme0/nvme0n1/nvme0n1p1
sys-devices-pci0000:00-0000:00:01.1-0000:0c:00.0-nvme-nvme0-nvme0n1.device loaded active plugged /sys/devices/pci0000:00/0000:00:01.1/0000:0c:00.0/nvme/nvme0/nvme0n1
sytemctl 中列出的其他存储设备普通 SAS 磁盘看起来有点不同:
root@pmx0:~# systemctl list-units | grep sdb
sys-devices-pci0000:00-0000:00:01.0-0000:0b:00.0-host0-target0:2:1-0:2:1:0-block-sdb-sdb1.device loaded active plugged PERC_H710 1
sys-devices-pci0000:00-0000:00:01.0-0000:0b:00.0-host0-target0:2:1-0:2:1:0-block-sdb-sdb2.device loaded active plugged PERC_H710 2
sys-devices-pci0000:00-0000:00:01.0-0000:0b:00.0-host0-target0:2:1-0:2:1:0-block-sdb.device loaded active plugged PERC_H710
使用 ls 列出 NVMe /sys/devices/..:
root@pmx0:~# ls /sys/devices/pci0000:00/0000:00:01.1/0000:0c:00.0/nvme/nvme0/nvme0n1/nvme0n1p1
alignment_offset dev discard_alignment holders inflight partition power ro size start stat subsystem trace uevent
事情没有帮助:
- 再次重启也没用
- drbd服务重启没有帮助
- drbdadm 分离/断开/附加/服务重新启动没有帮助
- 这些 drbd 节点上未配置 nfs-kernel-server 服务(因此无法取消配置 nfs-server)
经过一番调查:
dump-md 响应:找到元数据“不干净”,请 apply-al 第一个 apply-al 命令以退出代码 20 终止,并显示以下消息: open(/dev/nvme0n1p1)失败:设备或资源繁忙
看来问题是这个设备(/dev/nvme0n1p1) 由我的 drbd 资源配置使用无法独占打开。
DRBD 命令失败:
root@pmx0:~# drbdadm attach r0
open(/dev/nvme0n1p1) failed: Device or resource busy
Operation canceled.
Command 'drbdmeta 0 v08 /dev/nvme0n1p1 internal apply-al' terminated with exit code 20
root@pmx0:~# drbdadm apply-al r0
open(/dev/nvme0n1p1) failed: Device or resource busy
Operation canceled.
Command 'drbdmeta 0 v08 /dev/nvme0n1p1 internal apply-al' terminated with exit code 20
root@pmx0:~# drbdadm dump-md r0
open(/dev/nvme0n1p1) failed: Device or resource busy
Exclusive open failed. Do it anyways?
[need to type 'yes' to confirm] yes
Found meta data is "unclean", please apply-al first
Command 'drbdmeta 0 v08 /dev/nvme0n1p1 internal dump-md' terminated with exit code 255
DRBD服务状态/命令:
root@pmx0:~# drbd-overview
0:r0/0 Connected Secondary/Secondary Diskless/Diskless
root@pmx0:~# drbdadm dstate r0
Diskless/Diskless
root@pmx0:~# drbdadm disconnect r0
root@pmx0:~# drbd-overview
0:r0/0 . . .
root@pmx0:~# drbdadm detach r0
root@pmx0:~# drbd-overview
0:r0/0 . . .
尝试重新附加资源 r0:
root@pmx0:~# drbdadm attach r0
open(/dev/nvme0n1p1) failed: Device or resource busy
Operation canceled.
Command 'drbdmeta 0 v08 /dev/nvme0n1p1 internal apply-al' terminated with exit code 20
root@pmx0:~# drbdadm apply-al r0
open(/dev/nvme0n1p1) failed: Device or resource busy
Operation canceled.
Command 'drbdmeta 0 v08 /dev/nvme0n1p1 internal apply-al' terminated with exit code 20
lsof,定影器零输出:
root@pmx0:~# lsof /dev/nvme0n1p1
root@pmx0:~# fuser /dev/nvme0n1p1
root@pmx0:~# fuser /dev/nvme0n1
root@pmx0:~# lsof /dev/nvme0n1
资源盘分区及LVM配置:
root@pmx0:~# fdisk -l /dev/nvme0n1
Disk /dev/nvme0n1: 1.9 TiB, 2048408248320 bytes, 4000797360 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x59762e31
Device Boot Start End Sectors Size Id Type
/dev/nvme0n1p1 2048 3825207295 3825205248 1.8T 83 Linux
root@pmx0:~# pvs
PV VG Fmt Attr PSize PFree
/dev/sdb2 pve lvm2 a-- 135.62g 16.00g
root@pmx0:~# vgs
VG #PV #LV #SN Attr VSize VFree
pve 1 3 0 wz--n- 135.62g 16.00g
root@pmx0:~# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
data pve twi-a-tz-- 75.87g 0.00 0.04
root pve -wi-ao---- 33.75g
swap pve -wi-ao---- 8.00g
root@pmx0:~# vi /etc/lvm/lvm.conf
root@pmx0:~# cat /etc/lvm/lvm.conf | grep nvm
filter = [ "r|/dev/nvme0n1p1|", "a|/dev/sdb|", "a|sd.*|", "a|drbd.*|", "r|.*|" ]
DRBD资源配置:
root@pmx0:~# cat /etc/drbd.d/r0.res
resource r0 {
protocol C;
startup {
wfc-timeout 0; # non-zero wfc-timeout can be dangerous (http://forum.proxmox.com/threads/3465-Is-it-safe-to-use-wfc-timeout-in-DRBD-configuration)
degr-wfc-timeout 300;
become-primary-on both;
}
net {
cram-hmac-alg sha1;
shared-secret "*********";
allow-two-primaries;
after-sb-0pri discard-zero-changes;
after-sb-1pri discard-secondary;
after-sb-2pri disconnect;
#data-integrity-alg crc32c; # has to be enabled only for test and disabled for production use (check man drbd.conf, section "NOTES ON DATA INTEGRITY")
}
on pmx0 {
device /dev/drbd0;
disk /dev/nvme0n1p1;
address 10.0.20.15:7788;
meta-disk internal;
}
on pmx1 {
device /dev/drbd0;
disk /dev/nvme0n1p1;
address 10.0.20.16:7788;
meta-disk internal;
}
disk {
# no-disk-barrier and no-disk-flushes should be applied only to systems with non-volatile (battery backed) controller caches.
# Follow links for more information:
# http://www.drbd.org/users-guide-8.3/s-throughput-tuning.html#s-tune-disable-barriers
# http://www.drbd.org/users-guide/s-throughput-tuning.html#s-tune-disable-barriers
no-disk-barrier;
no-disk-flushes;
}
}
其他节点:
root@pmx1:~# drbd-overview
0:r0/0 Connected Secondary/Secondary Diskless/Diskless
等等每个命令响应和配置都显示与上面的节点 pmx0 相同...
Debian 和 DRBD 版本:
root@pmx0:~# uname -a
Linux pmx0 4.15.18-10-pve #1 SMP PVE 4.15.18-32 (Sat, 19 Jan 2019 10:09:37 +0100) x86_64 GNU/Linux
root@pmx0:~# cat /etc/debian_version
9.8
root@pmx0:~# dpkg --list| grep drbd
ii drbd-utils 8.9.10-2 amd64 RAID 1 over TCP/IP for Linux (user utilities)
root@pmx0:~# lsmod | grep drbd
drbd 364544 1
lru_cache 16384 1 drbd
libcrc32c 16384 2 dm_persistent_data,drbd
root@pmx0:~# modinfo drbd
filename: /lib/modules/4.15.18-10-pve/kernel/drivers/block/drbd/drbd.ko
alias: block-major-147-*
license: GPL
version: 8.4.10
description: drbd - Distributed Replicated Block Device v8.4.10
author: Philipp Reisner <[email protected]>, Lars Ellenberg <[email protected]>
srcversion: 9A7FB947BDAB6A2C83BA0D4
depends: lru_cache,libcrc32c
retpoline: Y
intree: Y
name: drbd
vermagic: 4.15.18-10-pve SMP mod_unload modversions
parm: allow_oos:DONT USE! (bool)
parm: disable_sendpage:bool
parm: proc_details:int
parm: minor_count:Approximate number of drbd devices (1-255) (uint)
parm: usermode_helper:string
坐骑:
root@pmx0:~# cat /proc/mounts
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,relatime 0 0
udev /dev devtmpfs rw,nosuid,relatime,size=24679656k,nr_inodes=6169914,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=4940140k,mode=755 0 0
/dev/mapper/pve-root / ext4 rw,relatime,errors=remount-ro,data=ordered 0 0
securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0
cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd 0 0
pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0
cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio 0 0
cgroup /sys/fs/cgroup/hugetlb cgroup rw,nosuid,nodev,noexec,relatime,hugetlb 0 0
cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0
cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0
cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0
cgroup /sys/fs/cgroup/rdma cgroup rw,nosuid,nodev,noexec,relatime,rdma 0 0
cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0
cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0
cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids 0 0
cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event 0 0
systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=39,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=20879 0 0
debugfs /sys/kernel/debug debugfs rw,relatime 0 0
hugetlbfs /dev/hugepages hugetlbfs rw,relatime,pagesize=2M 0 0
mqueue /dev/mqueue mqueue rw,relatime 0 0
sunrpc /run/rpc_pipefs rpc_pipefs rw,relatime 0 0
configfs /sys/kernel/config configfs rw,relatime 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
/dev/sda1 /mnt/intelSSD700G ext3 rw,relatime,errors=remount-ro,data=ordered 0 0
lxcfs /var/lib/lxcfs fuse.lxcfs rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other 0 0
/dev/fuse /etc/pve fuse rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other 0 0
10.0.0.15:/samba/shp /mnt/pve/bckNFS nfs rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=10.0.0.15,mountvers=3,mountport=42772,mountproto=udp,local_lock=none,addr=10.0.0.15 0 0
答案1
我在设置中遇到了同样的问题,但是我发现在drbd
配置中我们在配置中给出了 LVM 名称,这意味着当我们启动服务时,drbd
它将根据配置安装挂载点本身。
我发现挂载点是在/etc/fstab
其中定义的,应该被注释,并且不应由操作系统挂载。
我就是这样解决的。
答案2
在我看来,最好的办法是删除a|sd.*|
并r|/dev/nvme0n1p1|
仅保留实际需要的内容。操作系统安装在/dev/sdb
(LVM正在使用)上,因此理论上您需要添加的唯一内容(包含在lvm扫描中)就是/dev/sdb
并且drbd.*
排除其他任何内容。因此,过滤器部分应如下所示......
filter = [ "a|/dev/sdb|", "a|drbd.*|", "r|.*|" ]
除了上述之外,还检查文件filter =
中是否多次出现该条目/etc/lvm/lvm.conf
。如果存在多个条目,则它们可能会产生冲突。