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Date: Sat, 16 Mar 2002 17:57:48 -0800 (PST)
From: Roy Hooper <rhooper@toybox.ca>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: misc/35992: /etc/rc has no way to force fsck -y at next boot, corrupt filesystems with soft updates required manual intervention
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>Number:         35992
>Category:       misc
>Synopsis:       /etc/rc has no way to force fsck -y at next boot, corrupt filesystems with soft updates required manual intervention
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          wish
>Submitter-Id:   current-users
>Arrival-Date:   Sat Mar 16 18:00:04 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Roy Hooper
>Release:        4.5-RELEASE
>Organization:
>Environment:
FreeBSD plumber.cyberus.ca 4.5-RELEASE FreeBSD 4.5-RELEASE #0: Mon Jan 28 14:31:56 GMT 2002     murray@builder.freebsdmall.com:/usr/src/sys/compile/GENERIC  i386

>Description:
/etc/rc performs fsck -p then only fsck -y if fsck_y_enable="YES"

with softupdates, I managed to end up with a corrupt filesytem (in /usr/lib of all places!) causing the following kinds of error messages:
Mar 13 01:17:16 plumber /kernel: dscheck(#ad/0x20006): negative b_blkno -300154849
/usr/lib/compat/aout/libalias.so.2.4: Bad file descriptor

>How-To-Repeat:
Actually corrupt your FFS filesystem with softupdates (somehow).  I think the combination of multiple hard poweroffs during compiles should do the trick.
>Fix:
The solution was to force a fsck -y at boot time by modifying /etc/rc so that I could remotely reboot the machine.
Adding the ability to touch a temporary file such as /force-fsck-y would be very useful for remote maintenance.
>Release-Note:
>Audit-Trail:
>Unformatted:

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