In what situations can a WR lock be held on a group and not released ? 
(UV10.0.16 HP-UX 11i)
We've had this situation in one of our test (fortunately) accounts and can't 
explain it.
All users got stuck waiting for the group lock to be released - we couldn't 
even LIST or COUNT the file.

Active Group Locks:                                    Record Group Group Group
Device.... Inode....  Netnode Userno  Lmode G-Address.  Locks ...RD ...SH ...EX
1073807361     90021        0     31   7 IN          1      5     0     0     0
1073807361     10483        0     73  19 IN        800      2     0     0     0
1073807361     52985        0     73  24 WR          0      0     0     0     0

I would also have thought that there would have been a number in the Group EX 
column.
We had to log out the user with a kill -9 and unlock their locks as a kill -15 
had no effect.
The file in question is dynamic, with a modulus of 1 and only had 1 record in 
it (mildly overflowed).
I have read Martin Phillips' explanation of group locks, and favour his 
technical suggestion that in this situation "your system is stuffed".
The notes for the Internals course don't help either.

Any comments would be appreciated !
========================
David Norman
Senior Software Engineer - SA Ambulance Service

ICT Services
SA Health
Government of South Australia

Box 3, GPO
Adelaide, South Australia 5001
*+61 8 8274 0384
* fax +61 8 8271 4844
* [email protected]<mailto:[email protected]>


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