Date: Wed, 6 May 1998 10:20:01 -0700 (PDT) From: Cy Schubert <cschuber@uumail.gov.bc.ca> To: freebsd-bugs@FreeBSD.ORG Subject: Re: kern/6102: panic: biodone: buffer not busy Message-ID: <199805061720.KAA08257@freefall.freebsd.org>
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The following reply was made to PR kern/6102; it has been noted by GNATS. From: Cy Schubert <cschuber@uumail.gov.bc.ca> To: freebsd-gnats-submit@freebsd.org, dima@best.net Cc: Subject: Re: kern/6102: panic: biodone: buffer not busy Date: Tue, 05 May 1998 22:39:47 -0700 The CVS log for vfs_bio.c states, 1.67 Thu Oct 19 23:48:25 1995 UTC by dyson Diffs to 1.66 If we clear the B_CACHE flag because a buffer isn't composed fully of valid bytes, we must also clear the B_DONE flag. Some filesystems depend on this (incl NFS) and is probably the cause of the biodone error and subsequent crash. Anyway this change needs to be made. The question I have is, why must the B_DONE flag be cleared when the B_CACHE flag is cleared? I've had this problem since 2.2.5. Since 2.2.6, the problem appears to have gotten worse, e.g. two panics in the last 5 minutes. In both cases a "find . | cpio -pdm /vol/archives" to copy data to a SCSI Zip disk was running at the time of panic. Cy Schubert To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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