Re: Problem with amtape "hanging" when forked from Java
Nathan Stratton Treadway <[email protected]>
| Newsgroups | gmane.comp.archivers.amanda.user |
|---|---|
| Message-ID | <[email protected]> |
On Thu, Mar 10, 2022 at 13:02:24 -0500, Robert Heller wrote: > At Thu, 10 Mar 2022 12:46:43 -0500 Nathan Stratton Treadway <[email protected]> wrote: > > > > > On Thu, Mar 10, 2022 at 09:55:30 -0500, Robert Heller wrote: > > > Here is the Java fragment: > > > > > > public class FlushOldVaults extends BackupVault { > > > private static final String AMTAPE = "/usr/sbin/amtape"; > > > private static final String AMTAPEOPT1 = "-otpchanger=vault_changer"; > > > private static final String AMTAPEOPT2 = "-ointeractivity="; > > > > You would probably be able to confirm this by looking in the amanda > > log/debug files for the amtape process (i.e. > > /var/log/amanda/server/<CONFIG>/amtape.*.debug on Ubuntu) , but I'm pretty > > sure that you do actually need the empty argument in order to disable > > the interactivity, something like > > private static final String AMTAPEOPT2 = "-ointeractivity=''"; > > It does not like the empty argument, amtape throws a error status and the > Java subprocess returns a failure status. It is "happy" with what I have, > except it hangs on the broken tape. Okay, sounds like the argument parsing is different in the Java .exec() context than on a shell command line. The important question is whether or not the interactivity is actually disabled.... perhaps the amtape .debug file gives some confirmation? > The timeout never times out. The amtape process goes into Sleep state and the > Java program just hangs. In that case hopefully strace -p/lsof -p on the amtape process (or any other Amanda processes that amtape spawns) can give some hint as to what it's waiting for.... Nathan ---------------------------------------------------------------------------- Nathan Stratton Treadway - [email protected] - Mid-Atlantic region Ray Ontko & Co. - Software consulting services - http://www.ontko.com/ GPG Key: http://www.ontko.com/~nathanst/gpg_key.txt ID: 1023D/ECFB6239 Key fingerprint = 6AD8 485E 20B9 5C71 231C 0C32 15F3 ADCD ECFB 6239