在VCS下如何手工加载磁盘组

在VCS环境中，有时候由于故障会导致VCS无法加载磁盘组，此时可以通过手工方式挂接磁盘。

以下是一个可供参考的步骤.
如果可以，先停止HA：

bash-2.05# hastop -all -force
bash-2.05# hastatus
^Ctempting to connect....not available; will retry
bash-2.05#

确认DG是否加载,如果未加载需要手工挂接:

bash-2.05# vxdg list
NAME STATE ID
datadg enabled 1160473016.27.db210-1.hurray.com.cn

尝试手工mount卷组:

bash-2.05# mount -F vxfs /dev/vx/dsk/datadg/datadgvol /data1
UX:vxfs mount: ERROR: V-3-20003: Cannot open /dev/vx/dsk/datadg/datadgvol: No such device or address
UX:vxfs mount: ERROR: V-3-24996: Unable to get disk layout version

错误提示表明Volume未启动，使用以下命令启动:

bash-2.05# vxvol -g datadg startall

bash-2.05# vxprint
Disk group: datadg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0
dg datadg datadg - - - - - -

dm emclun1 emcpower3c - 41938416 - - - -

v datadgvol fsgen ENABLED 41936896 - ACTIVE - -
pl datadgvol-01 datadgvol ENABLED 41936896 - ACTIVE - -
sd emclun1-01 datadgvol-01 ENABLED 41936896 0 - - -

如果此时Mount，可能还会遇到错误：

bash-2.05# mount -F vxfs /dev/vx/dsk/datadg/datadgvol /data1
UX:vxfs mount: ERROR: V-3-21268: /dev/vx/dsk/datadg/datadgvol is corrupted. needs checking

VCS需要对磁盘进行检查：

bash-2.05# fsck -F vxfs /dev/vx/dsk/datadg/datadgvol
log replay in progress
replay complete - marking super-block as CLEAN

此时磁盘可以被正常挂接:

bash-2.05# mount -F vxfs /dev/vx/dsk/datadg/datadgvol /data1
bash-2.05$ df -k /data1
Filesystem kbytes used avail capacity Mounted on
/dev/vx/dsk/datadg/datadgvol
20968448 730217 18973346 4% /data1

几个错误属于常见类型，记录一下！

-The End-