ACSLS - Semaphore Errors Cause ACSLS to Hang
(Doc ID 1014173.1)
Last updated on JULY 11, 2022
Applies to:
Sun StorageTek Auto Cartridge Sys Lib SW (ACSLS) - Version 7.0 to 8.5.1 [Release 7.0 to 8.0]All Platforms
Symptoms
This document describes an ACSLS hang event because of a Sun Explorer bug.
The following semaphore errors are logged in acsss_event.log:
2007-10-08 15:55:02 ACSMON process[0]:
469 N cl_dshm_attach.c 1 163
cl_dshm_attach: Error 5
on call to cl_sem_lock with id 0. Status=STATUS_IPC_FAILURE
2007-10-08 15:55:30 ACSMON process[0]:
525 N dv_get.c 1 549
dv_get: st_do_common_checking: status STATUS_IPC_FAILURE on call to
cl_dshm_attach(reattach) with key=0x410086ef
...
2007-10-19 11:28:36 ACSLH[0]:
469 N cl_dshm_attach.c 1 163
cl_dshm_attach: Error 22
on call to cl_sem_lock with id 0. Status=STATUS_IPC_FAILURE
2007-10-19 11:28:36 ACSLH[0]:
525 N dv_get.c 1 549
dv_get: st_do_common_checking: status STATUS_IPC_FAILURE on call to
cl_dshm_attach(reattach) with key=0x410086ef
The 'ipcs -a' output shows a lot of these semaphore entries:
s 17 0 ----------- root root no-entry 18:32:40 user.root
s 16 0 ----------- root root no-entry 18:32:40 user.root
s 15 0 ----------- root root no-entry 18:32:40 user.root
s 14 0 ----------- root root no-entry 18:32:40 user.root
s 13 0 ----------- root root no-entry 18:32:40 user.root
s 12 0 ----------- root root no-entry 18:32:40 user.root
s 11 0 ----------- root root no-entry 18:32:40 user.root
....
....
Changes
Sun Explorer was run to gather diagnostic logs for the Solaris OS. A few minutes later, ACSLS started to perform sluggishly and then went into a hang state.
Cause
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