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Message-Id: <200208241717.g7OHHqgh047734@www.freebsd.org>
Date: Sat, 24 Aug 2002 10:17:52 -0700 (PDT)
From: Jason Sopko <jsopko@opensourcegroup.com>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: kern/41980: Seagate STT20000A (ast0) ATAPI tape drive not working under 4.6.2-RELEASE, worked under 4.5-RELEASE
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>Number:         41980
>Category:       kern
>Synopsis:       Seagate STT20000A (ast0) ATAPI tape drive not working under 4.6.2-RELEASE, worked under 4.5-RELEASE
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Aug 24 10:20:03 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Jason Sopko
>Release:        4.6.2-RELEASE
>Organization:
Open Source Group
>Environment:
FreeBSD 4.6.2-RELEASE #0
>Description:
My 4.6.2-RELEASE kernel was compiled from the GENERIC template (as was the 4.5-RELEASE kernel). Since updating to 4.6.2-RELEASE from 4.5-RELEASE, I can no longer backup my data to tape. Here is my output from dmesg:

ast0: TAPE <Seagate STT20000A> at ata1-master PIO4

If I issue any mt commands to /dev/ast0, it hangs the process and cannot be killed, even with kill -9. I can issue a mt -f /dev/nast0 status, however, and it reports the proper information without hanging the process. If I try to dump to /dev/nast0, it hangs the process when it tries to close the device after dumping. This is a serious problem as I can no longer backup my production data to tape.
>How-To-Repeat:
Use the mt command on /dev/ast0 or /dev/nast0 with the 4.6.2-RELEASE kernel.
>Fix:
None
>Release-Note:
>Audit-Trail:
>Unformatted:

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