Date: Sun, 6 Jun 1999 23:02:19 GMT From: "Julian H. Stacey Jhs@jhs.muc.de Jhs" <jhs@jhs.muc.de> To: FreeBSD-gnats-submit@freebsd.org Cc: nclayton@lehman.com, stuart@jhs.muc.de, gary@jhs.muc.de Subject: kern/12062: sa tape driver with Cipher 60M SCSI QIC tape drive on 3.2 is droping last 10K block. Message-ID: <199906062302.XAA03419@jhs.muc.de>
next in thread | raw e-mail | index | archive | help
>Number: 12062
>Category: kern
>Synopsis: sa tape driver with Cipher 60M SCSI QIC tape drive on 3.2 is droping last 10K block.
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Jun 6 16:20:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator: Julian H. Stacey jhs@jhs.muc.de
>Release: FreeBSD 3.2-RELEASE i386
>Organization:
>Environment:
-
>Description:
I had intended to file a bland
Category: docs
"please add to docu that this drive still works on 3.2"
But Not So
It seems the driver software has been srambled, & last blocks are dropped on write !
Cipher tape drive Model 540 (Capacity: QIC 45M 60M tapes, Interface: SCSI 1)
dmesg reports it as:
Jun 6 18:48:17 wall /kernel: sa0 at aha0 bus 0 target 3 lun 0
Jun 6 18:48:17 wall /kernel: sa0: < > Removable Sequential Access SCSI-CCS device
Jun 6 18:48:17 wall /kernel: sa0: 3.300MB/s transfers
It started to read a tape OK, that I created 1996.01.16 on BSD
(but I got impatient & didnt read whole tape, as I control C'd it,
as I thought I was just verifying then)
On writing a 7.7M directory with tar cvf /dev/rsa0 . at end it reported
tar: only wrote 0 of 10240 bytes to /dev/rsa0
On reading same tape
tar: Unexpected EOF on archive file
On comparing directories, last file was different,
to compare directories I used
find . -type f -exec cmpd -d -v {} ../../public_html \;
( cmpd.c is written by me (compare & delete), available on
http://www.freebsd.org/~jhs/src/bsd/jhs/bin/public/cmpd/ )
Historical note: This is one of the same drive type I had listed as working in
From: burgess@hrd769.brooks.af.mil (Dave Burgess)
Date: 13 Jan 1994 06:00:46 -0000
Newsgroups: comp.os.386bsd.announce,comp.answers,news.answers
Subject: [comp.os.386bsd] BNR/2 derived BSD for PCs FAQ (Part 9 of 10)
Message-ID: <386bsd-faq-9-758440818@hrd769.brooks.af.mil>
Archive-name: 386bsd-faq/part9
>How-To-Repeat:
I do not know if this problem materialises on other drives & densities, I have others
(Tandberg & Prime 60M ) & will try them, didn't notice this on my Tandberg 525M drive.
>Fix:
Driver software needs fixing, meantime:
Always append 10K of garbage file as last item in a tar write
(this is the same horrible trick I used many years ago, that became
un-necessary years ago, & now is back again - Uugh ! :-)
>Release-Note:
>Audit-Trail:
>Unformatted:
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199906062302.XAA03419>