Re: using autosave, iocInit hangs

[Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>]

On 5/25/21 12:33 PM, Heinz Junkes via Tech-talk wrote:
> I also have the reccaster running on the system.
> 
> It looks like the casterInit function leads to blocking.
> I have the function sockpair_compat under suspicion. 
> However, I need to investigate this further.
> Heinz 

If you can reproduce this hang, please reply with a stack trace of all threads.


>> On 23. May 2021, at 22:24, junkes via Tech-talk <tech-talk at aps.anl.gov> wrote:
>>
>> I was using EPICS 7 with RTEMS 5 and have now also enabled autosave.
>> Unfortunately in Main iocInit does not come back but hangs at the last
>> InitHookAnnounce in iocRun
>> ...
>>    if (iocState == iocBuilt)
>>        initHookAnnounce(initHookAtEnd);
>>
>>    errlogPrintf("iocRun: %s\n", iocState == iocBuilt ?
>>        "All initialization complete" :
>>        "IOC restarted");
>>    iocState = iocRunning;
>>    initHookAnnounce(initHookAfterIocRunning);
>>    return 0;
>> }
>>
>>
>>
>>
>>
>>
>> and no new iocsh(NULL) is started.
>>
>> int main(int argc,char *argv[])
>> {
>>    if(argc>=2) {
>>        iocsh(argv[1]);   <----- here it gets stuck
>>        epicsThreadSleep(.2);
>>    }
>>    iocsh(NULL);
>>
>>
>>
>> ...
>> ########
>> # autosave setup
>> dbLoadRecords("db/save_restoreStatus.db", "P=iocvmeIOC3:")
>> ## autoSaveRestore setup
>> save_restoreSet_Debug(0)
>> # status-PV prefix, so save_restore can find its status PV's.
>> save_restoreSet_status_prefix("iocvmeIOC3:")
>> # ok to restore a save set that had missing values (no CA connection to PV)?
>> # ok to save a file if some CA connections are bad?
>> save_restoreSet_IncompleteSetsOk(1)
>> #In the restore operation, a copy of the save file will be written.  The
>> # file name can look like "auto_settings.sav.bu", and be overwritten every
>> # reboot, or it can look like "auto_settings.sav_020306-083522" (this is what
>> # is meant by a dated backup file) and every reboot will write a new copy.
>> save_restoreSet_DatedBackupFiles(1)
>> # specify where save files should go
>> set_savefile_path("/Volumes/Epics/LogDir/log/as","/save")
>> # specify where request files can be found
>> set_requestfile_path("/Volumes/Epics/LogDir/log/as","/req")
>> # Specify what save files should be restored when.
>> # Up to eight files can be specified for each pass.
>> set_pass0_restoreFile("iocvmeIOC3_0.sav")
>> set_pass1_restoreFile("iocvmeIOC3_1.sav")
>> # Number of sequenced backup files (e.g., 'auto_settings.sav0') to write
>> save_restoreSet_NumSeqFiles(3)
>> save_restoreSet_SeqPeriodInSeconds(600)
>> # Time between failed .sav-file write and the retry.
>> save_restoreSet_RetrySeconds(60)
>> makeAutosaveFileFromDbInfo("/Volumes/Epics/LogDir/log/as/req/iocvmeIOC3_0.req", "autosaveFields_pass0")
>> makeAutosaveFileFromDbInfo("/Volumes/Epics/LogDir/log/as/req/iocvmeIOC3_1.req", "autosaveFields_pass1")
>> iocInit
>> iocInit: Reached initHookAtIocBuild
>> Starting iocInit
>> iocInit: Reached initHookAtBeginning
>> ############################################################################
>> ## EPICS R7.0.4.2-DEV
>> ## Rev. R7.0.4.1-274-g31ade32004709a9d47e8-dirty
>> ############################################################################
>> iocInit: Reached initHookAfterCallbackInit
>> iocInit: Reached initHookAfterCaLinkInit
>> iocInit: Reached initHookAfterInitDrvSup
>> iocInit: Reached initHookAfterInitRecSup
>> reboot_restore: entry for file 'iocvmeIOC3_0.sav'
>> reboot_restore: Found filename 'iocvmeIOC3_0.sav' in restoreFileList.
>> *** restoring from '/Volumes/Epics/LogDir/log/as/save/iocvmeIOC3_0.sav' at initHookState 6 (before record/device init) ***
>> reboot_restore: done with file 'iocvmeIOC3_0.sav'
>>
>> iocInit: Reached initHookAfterInitDevSup
>> 2021/05/23 20:07:03.501 sis0: Param Timestamp Clear can not be read
>> reboot_restore: entry for file 'iocvmeIOC3_1.sav'
>> reboot_restore: Found filename 'iocvmeIOC3_1.sav' in restoreFileList.
>> *** restoring from '/Volumes/Epics/LogDir/log/as/save/iocvmeIOC3_1.sav' at initHookState 7 (after record/device init) ***
>> reboot_restore: done with file 'iocvmeIOC3_1.sav'
>>
>> iocInit: Reached initHookAfterInitDatabase
>> iocInit: Reached initHookAfterFinishDevSup
>> iocInit: Reached initHookAfterScanInit
>> iocInit: Reached initHookAfterInitialProcess
>> iocInit: Reached initHookAfterCaServerInit
>> iocInit: Reached initHookAfterIocBuilt
>> iocInit: Reached initHookAtIocRun
>> iocInit: Reached initHookAfterDatabaseRunning
>> iocInit: Reached Not an initHookState
>> iocInit: Reached initHookAfterCaServerRunning
>> iocInit: Reached Not an initHookState
>> iocRun: All initialization complete
>> ...
>> no return ...
>>
>> Danke, Heinz
>