|
Problem IC71894
|
Status: Closed |
MOUNT_STOP SCRIPT MAY HANG IF THERE ARE MULTIPLE FS ON THE SAME VG |
| product: |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 |
| Problem description: |
In an integrated HA environment, if there are multiple
filesystems exist on the same vg on AIX systems, the TSA move
request may hang. TSA move will call the mountV9x_stop.ksh
script on all the mount points in parallel.
In the mountV9x_stop.ksh script, umount and varyoffvg commands
are issued in a loop until varyoffvg is successful.
In a scenario where there are multiple fs on the same vg, one
mountV9x_stop.ksh script may be calling varyoffvg while the
other mountV9x_stop.ksh may be issuing lslv prior to a umount
attempt. Since varyoffvg is being invoked in a loop, this will
block the lslv calls. This subsequently blocks the lslv, umount
code path in the rest of the mountV9x_stop.ksh scripts, so those
mount points are still mounted. This in turn causes varyoffvg
call to fail.
This race condition is sometimes seen in an environment where
there are over 4 filesystems per vg.
During this scenario, any lslv or lsvg command will hang. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Integrated HA solution user. (High availability feature with *
* SA MP used) *
****************************************************************
* PROBLEM DESCRIPTION: *
* See error description *
****************************************************************
* RECOMMENDATION: *
* Apply DB2 V9.5.0.8. *
**************************************************************** |
| Local Fix: |
No known workaround. Please contact with the IBM db2support. |
| available fix packs: |
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
Apply DB2 V9.5.0.8. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 14.10.2010
30.06.2011
30.06.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.5.0.8
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.5.0.8
|
 |
