drbd错误总结 创建过程

admin

[color=rgba(58, 58, 58, 0.88)]问题1、’ha’ ignored, since this host (node2.centos.bz) is not mentioned with an ‘on’ keyword.？

[color=rgba(58, 58, 58, 0.88)]错误信息:
执行指令 drbdadm create-md ha 时出现如下错误信息：
5 z# y9 S  P- E( l8 O/ Y) o0 j6 C% |‘ha’ ignored, since this host (node2.centos.bz) is not mentioned with an ‘on’ keyword.

[color=rgba(58, 58, 58, 0.88)]解决方法:
+ f2 ]# l! z9 Z3 e7 c& q% p因为在 drbd 设定 drbd.conf 中 on 本来写的是 node1、node2 而以，将node1和node2分别改为node1.centos.bz,node2.centos.bz。

[color=rgba(58, 58, 58, 0.88)]问题2、drbdadm create-md ha: exited with coolpre 20？

[color=rgba(58, 58, 58, 0.88)]错误信息:
" L+ L  N0 l9 ~- ^执行指令 drbdadm create-md ha 时出现如下错误信息：

[color=rgba(58, 58, 58, 0.88)]open(/dev/hdb1) failed: No such file or directory
5 E- m* o" ]8 bCommand ‘drbdmeta 0 v08 /dev/hdb1 internal create-md’ terminated with exit coolpre 20
6 s( `; l; D5 P+ Ddrbdadm create-md ha: exited with coolpre 20

[color=rgba(58, 58, 58, 0.88)]解决方法:
因为忘了执行 fdisk /dev/hdb 指令建立分割区所造成，如下将 /dev/hdb 建立分割区后指令即可正常执行

• # fdisk /dev/hdb //准备为 hdb 建立分割区
• The number of cylinders for this disk is set to 20805.
• There is nothing wrong with that, but this is larger than 1024,
• and could in certain setups cause problems with:
• 1) software that runs at boot time (e.g., old versions of LILO)
• 2) booting and partitioning software from other OSs
• (e.g., DOS FDISK, OS/2 FDISK)
• Command (m for help): n //键入 n 表示要建立分割区
• Command action
• e extended
• p primary partition (1-4)
• p //键入 p 表示建立主要分割区
• Partition number (1-4): 1 //键入 1 为此主要分割区代号
• First cylinder (1-20805, default 1): //开始磁柱值，按下 enter 即可
• Using default value 1
• Last cylinder or +size or +sizeM or +sizeK (1-20805, default 20805): //结束磁柱值，按下 enter 即可
• Using default value 20805
• Command (m for help): w //键入 w 表示确定执行刚才设定
• The partition table has been altered!
• Calling ioctl() to re-read partition table.
• Syncing disks.
  1 v& n$ t) }' g; G$ r* ~) j

[color=rgba(58, 58, 58, 0.88)][root@node1 yum.repos.d]# partprobe //使刚才的 partition table 变更生效

[color=rgba(58, 58, 58, 0.88)]问题3、drbdadm create-md ha: exited with coolpre 40？

[color=rgba(58, 58, 58, 0.88)]错误信息:
/ K0 i+ U! F; A: y% X) f* Q9 q! l执行指令 drbdadm create-md ha 时出现如下错误信息:

• Device size would be truncated, which
•   would corrupt data and result in
•   'access beyond end of device' errors.
•   You need to either
•      * use external meta data (recommended)
•      * shrink that filesystem first
•      * zero out the device (destroy the filesystem)
•   Operation refused.
•   Command 'drbdmeta 0 v08 /dev/hdb1 internal create-md' terminated with exit coolpre 40
•   drbdadm create-md ha: exited with coolpre 40
  $ L2 V6 f! m$ g$ f

[color=rgba(58, 58, 58, 0.88)]解决方法:
8 s: Z2 ~* }! |7 M5 l; Z使用 dd 指令将一些资料塞到 /dev/hdb 后再执行 drbdadm create-md ha 指令即可顺利执行

[color=rgba(58, 58, 58, 0.88)]# dd if=/dev/zero of=/dev/hdb1 bs=1M count=100

[color=rgba(58, 58, 58, 0.88)]问题4、DRBD 状态始终是 Secondary/Unknown？

[color=rgba(58, 58, 58, 0.88)]错误信息:
Node1、Node2 主机启动 DRBD 后状态始终是 Secondary/Unknown

• #service drbd status
• drbd driver loaded OK; device status:
• version: 8.3.8 (api:88/proto:86-94)
• GIT-hash: d78846e52224fd00562f7c225bcc25b2d422321d build by mockbuild@builder10.centos.org, 2010-06-04 08:04:16
• m:res cs ro ds p mounted fstype
• 0:ha WFConnection Secondary/Unknown Inconsistent/DUnknown C
  

[color=rgba(58, 58, 58, 0.88)]解决方法：
1、Node1、Node2 没有打开相对应的 Port，请开启相对应的 Port 或先把 IPTables 服务关闭即可。
2、可能发生了脑裂行为，一般出现在ha切换时，解决方法：
在一节点执行:
1 I" U1 q9 Z( y2 e- y% w# x. Fdrbdadm secondary resource
' a( m7 T/ M1 m8 \* @/ _) [drbdadm connect –discard-my-data resource
另一节点执行：
drbdadm connect resource

[color=rgba(58, 58, 58, 0.88)]问题5、1: Failure: (104) Can not open backing device

[color=rgba(58, 58, 58, 0.88)]错误信息：
& W2 X3 [8 n  W, y+ b9 R: v执行drbdadm up r0时出现：

[color=rgba(58, 58, 58, 0.88)]1: Failure: (104) Can not open backing device.
$ B( P; W, }, b2 z1 j/ NCommand ‘drbdsetup attach 1 /dev/sdb1 /dev/sdb1 internal’ terminated with exit pre 10

[color=rgba(58, 58, 58, 0.88)]解决方法：
可能因为你挂载了/dev/sdb1,执行umount /dev/sdb1即可。

+ }2 t7 K5 _/ G
3 z4 I- T, J) k9 q2 z. G' ?5 k8 X
+ s! m+ ]$ n# M) k+ E, M+ }

[color=rgba(58, 58, 58, 0.87843137254902)] drbdadm create-md image

[color=rgba(58, 58, 58, 0.87843137254902)]/dev/loop3 is only 0 bytes. That's not enough.

[color=rgba(58, 58, 58, 0.87843137254902)]Command 'drbdmeta 1 v08 /dev/loop3 flex-external create-md' terminated with exit code 10

admin

Run cat /proc/drbd on both nodes:
6 [- o- J* k3 n- |; U
: z! z* [' v  m; Q( J( H+ Rnode1:
- R* ?' v+ k6 H1 O' ?- `# ^
$ {' o. ^2 w# |9 _7 Nversion: 8.4.9-1 (api:1/proto:86-101)
GIT-hash: 9976da086367a2476503ef7f6b13d4567327a280 build by akemi@Build64R7, 2016-12-04 01:08:48
0: cs:WFConnection ro:Primary/Unknown ds:UpToDate/DUnknown C r----s
6 f( j2 s0 |3 K- a, |! x    ns:0 nr:0 dw:0 dr:912 al:8 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:2097052
node2:

version: 8.4.9-1 (api:1/proto:86-101)
, e/ w. \7 |# u$ c* j; B3 JGIT-hash: 9976da086367a2476503ef7f6b13d4567327a280 build by akemi@Build64R7, 2016-12-04 01:08:48
9 ], \. Z9 L/ M9 R 0: cs:WFConnection ro:Secondary/Unknown ds:Diskless/DUnknown C r----s
/ ~) }+ p: v! H$ B    ns:0 nr:0 dw:0 dr:0 al:8 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
Primary and Secondary unknown.

Run drbdadm connect all on node1:
4 W; I8 d: a  T, H3 r
, u( w, U/ s$ d! B& L$ q" q# v9 Cr0: Failure: (125) Device has a net-config (use disconnect first)
: J4 [0 K1 Z  n2 O4 FCommand 'drbdsetup-84 connect r0 ipv4:192.168.0.1:7789 ipv4:192.168.0.2:7789 --protocol=C' terminated with exit code 10
Run drbdadm -- --discard-my-data connect all on node2:
$ B' \& N. [/ H" x3 `
r0: Failure: (102) Local address(port) already in use.
Command 'drbdsetup-84 connect r0 ipv4:192.168.0.1:7789 ipv4:192.168.0.2:7789 --protocol=C --discard-my-data' terminated with exit code 10
What's wrong of using it?

" Y, C1 }9 ]. zEdit 1
After ran dd if=/dev/zero of=/dev/sdb(sdc) bs=1M oflag=direct status=progress on both nodes, they also can't ran drbdadm up r0 successfully:

node1
- C' g( ]+ s6 J+ W7 {No valid meta data found
Command 'drbdmeta 0 v08 /dev/sdb internal apply-al' terminated with exit code 255
node2
??: Failure: (162) Invalid configuration request
additional info from kernel:
minor exists in different resource
Command 'drbdsetup-84 new-minor r0 0 0' terminated with exit code 10
Edit 2
: K" X, D' m8 J( yAt this time, ran systemctl start brdb on both nodes, all of them got pending. Wait for a long time returned no result.

And ran lsblk -a now:

( O/ D& L; W" \& M) D; k2 UNAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
0 `  k$ E$ S$ a# c8 s: psda           8:0    0   10G  0 disk
/ j( W8 {9 S9 K' w, f; w* L% g├─sda1        8:1    0    1G  0 part /boot
└─sda2        8:2    0    9G  0 part
  ├─cl-root 253:0    0    8G  0 lvm  /
; X$ q# z8 L+ C" n5 d& d# s  └─cl-swap 253:1    0    1G  0 lvm  [SWAP]
sdb           8:32   0   16G  0 disk
sr0          11:0    1 1024M  0 rom
* B. x. D, w! R" U# C4 `! K5 gdrbd0       147:0    0    2G  0 disk