- **status**: unassigned --> assigned
- **assigned_to**: Srinivas Siva Mangipudy
- **Blocker**: --> False
---
** [tickets:#1443] log: service is crashed if creating and deleting conf obj
class continuously**
**Status:** assigned
**Milestone:** future
**Created:** Tue Aug 11, 2015 07:37 AM UTC by Vu Minh Nguyen
**Last Updated:** Tue Sep 20, 2016 06:04 PM UTC
**Owner:** Srinivas Siva Mangipudy
When creating application object class and deleting it continuously, log
service could be crashed.
To reproduce this case, perform following command.
> for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do immcfg -c
> SaLogStreamConfig safLgStrCfg=TestLog -a saLogStreamPathName=. -a
> saLogStreamFileName=TestLog; echo "create ($i) - $?"; immcfg -d
> safLgStrCfg=TestLog; echo "Delete ($i) - $?"; done
Output something likes:
> create (1) - 0
> Delete (1) - 0
> create (2) - 0
> error - saImmOmCcbObjectDelete for 'safLgStrCfg= TestLog' FAILED:
> SA_AIS_ERR_FAILED_OPERATION (21)
> error - saImmOmCcbApply FAILED: SA_AIS_ERR_FAILED_OPERATION (21)
> Delete (2) - 1
> error - saImmOmCcbObjectCreate_2 FAILED with SA_AIS_ERR_EXIST (14)
> create (3) - 1
> reboot: Restarting system
Here is the analysis:
1. When creating obj class is done by IMM, but logsv have not finished the
`apply callback` job yet.
In this case, it needs to update a run-time attribute `
saLogStreamCreationTimestamp`.
This is done in main thread.
2. If deleting this obj class comes before `apply callback` job finishes, IMM
will
mark that obj class as `IMM_DELETE_LOCK` and call respective callbacks to logsv
and *wait for response*, but logsv is busy in doing `apply callback` in (1).
When the request `update runtime attribute` to IMM by logsv, IMM will returns
TRY_AGAIN.
IMM waits for logsv response to release “IMM_DELETE_LOCK”, while logsv still
get stuck
in `update rt attribute` as getting TRY_AGAIN.
Consequently, logsv might be terminated if number of try-again is reached or
delete action gets failed.
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