🚀 go-pugleaf

Path: tg!scott
From: scott@tg.UUCP (Scott Barman)
Newsgroups: comp.sys.dec,comp.unix.questions,comp.unix.wizards,comp.bugs.4bsd,mod.computers.vax
Subject: dump hangs while dumping Eagles
Keywords: dump, Eagles, HELP!
Message-ID: <160@tg.UUCP>
Date: 21 Mar 87 23:38:28 GMT
Organization: Townsend Greenspan & Co., Inc.  New York, NY
Lines: 46


I hope somebody can give me a pointer as to where to find/fix this problem!
 
First the system:
	DEC VAX 11/780
	4 Mb of 'C'-type memory
	2 DEC RM05
	1 DEC TU77
	2 Fujitsu Eagle Drives (emulating expanded RM02s)
	1 Emulex SC7002 Controller
	1 Emulex V-Master Massbus Extender
	Running 4.1bsd
 
The problem:
	The dump program hangs after encountering an ECC error on the Eagle
drives.  Another problem is that the error cannot be consistantly recreated.
 
Recreate by:
	We use dump(8) level 0 as a full backup of a partition (by never
specifying 'u' on the command line).  Doing a full dump on a filesystem that
has some bad sectors will cause dump to hang occasionally. These sectors are
not in the bad sector file because the Emulex maintenance programs does not
allow for the entry of new sectors not found during formatting.  Also, the
Emulex version of "READALL" does not report the sector numbers found to be
bad (not critical since I can figure out the number from the system errors
and where the partition begins).  These sectors have been "marked" with
badsect(8).
	Additional notes:  The backups are done from single user mode.  To
get the single user, the system is rebooted instead of killing processes.
These errors do not occur on the RM05s nor are there any errors on the tape
drive.  To reset from this error, we have to <cntl>\ from dump and reboot
the system (if we do not reboot, the error will occur again).
	The particular partition this happens on has two sectors that generate
ECC errors and the problem only happens (when it does) on the first.
 
HELP!
	If you can help, please e-mail suggestions to me.  Any information
I can get will be appreciated.  Also, please don't tell me I should upgrade
to 4.3bsd.  I already know this and have been trying to convince others of
this as well.
 
	Thanks!
 
					Scott Barman
					{philabs, pyrnj}!tg!scott