Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!lll-crg!nike!ucbcad!ucbvax!YALE.ARPA!LEICHTER-JERRY From: LEICHTER-JERRY@YALE.ARPA Newsgroups: mod.computers.vax Subject: Re: VMS 4.4: Device Errors Message-ID: <8608130417.AA21836@ucbvax.Berkeley.EDU> Date: Wed, 13-Aug-86 00:50:15 EDT Article-I.D.: ucbvax.8608130417.AA21836 Posted: Wed Aug 13 00:50:15 1986 Date-Received: Wed, 13-Aug-86 06:30:37 EDT Sender: serge@ucbvax.BERKELEY.EDU Reply-To: Organization: The ARPA Internet Lines: 31 Approved: info-vax@sri-kl.arpa I recently upgraded to VMS V4.4 on my 11/780, and I noticed a "new" behavior... If a user does a SET HOST 0 to make a connection back to this machine, then logs in and runs EDT, the device RTA1: begins logging errors. These show up on any terminal from which a SHOW ERROR is typed.... Joe Leonard reported his V4.4 crashing when he was in EDT, this may be a related problem, or it could be a strange new quirk. Any insight would be appreciated. Here's the scoop, as explained to me by a contact at DEC: RT's are software- only devices, so the error count in the UCB does not indicate hardware prob- lems (like timeouts), as is the case for devices that connect to real hard- ware. Instead, the error count is used by the RT driver to report protocol errors. The errors you are seeing are the result of a bug introduced in VMS V4.4. They have NO functional significance, and do not affect communi- cation - or system operation - in any way. Note that RT's are cloned UCB's - the only permanent UCB is RTA0, which is copied to create RTAn when a new RT is needed. When RTAn is no longer needed, the cloned UCB is destroyed, and the memory it used returns to non-paged pool. Any RTAn's created later are also created from RTA0; even if they get the same "n" as a previously-used RTAn, they have no connection to it. That's why the error count disappears when you finish with the link. The bug that causes the "errorneous error" reports will be fixed in a future release of VMS after VMS V4.5. Until then, just ignore the errors. -- Jerry -------