[daip] UVCOP hanging? {External}

[egreisen]

On 2022-08-25 08:40, Arnaud Collioud via Daip wrote:
> Hello Eric, Amy,
> 
> I am trying to copy some uvdata with UVCOP but the process never
> stops, i.e. the file is well created and seem to have the right size
> but the message "Appears to have ended successfully" never displays
> (as well as no progress indications) and the input/output files stay
> in READ/WRIT mode.
> 
> When trying to abort the task,
> 
>> abort 'uvcop'
> AIPS 1: TASK UVCOP1 WAS NOT RUNNING
> 
> Any idea of what is happening here? I know there were some recent
> changes in this task...
> 
> BTW, I am using the up-to-date 31DEC22 version of AIPS.

That is good.  I wish more people were using the latest.

Note that ABORT takes NUMTELL.  So if you are running in say AIPS2
but NUMTELL is 1, then ABORT will try to kill UVCOP1 when you are
running UVCOP2.  NUMTELL 0 says to use your current AIPS number.

Try SPY or outside AIPS "ps -elf | grep UVCOP" to see if the task
is in fact running.  If not, perhaps it simply vanished although
there is an abort handler that is supposed to yield a message.

If it is present, perhaps some one of your disks is off line.  We
had symptoms like this recently when our Lustre disk complex had
problems.

Eric