Date: Fri, 27 Sep 2002 00:20:03 -0700 (PDT) From: Maxim Konovalov <maxim@macomnet.ru> To: freebsd-bugs@FreeBSD.org Subject: Re: misc/41792: lseek after ftruncate fails Message-ID: <200209270720.g8R7K3Ag018946@freefall.freebsd.org>
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The following reply was made to PR misc/41792; it has been noted by GNATS. From: Maxim Konovalov <maxim@macomnet.ru> To: bug-followup@freebsd.org Cc: Subject: Re: misc/41792: lseek after ftruncate fails Date: Fri, 27 Sep 2002 11:19:46 +0400 (MSD) Add to the audit trail. ---------- Forwarded message ---------- Date: Thu, 26 Sep 2002 15:53:34 -0700 (PDT) From: yury izrailevsky <izrailev@yahoo.com> To: Maxim Konovalov <maxim@FreeBSD.org> Subject: Re: misc/41792: lseek after ftruncate fails I was wrong -- it doesn't fail locally. Consistently fails over an NFS mount though. Privet. I-Opa --- Maxim Konovalov <maxim@FreeBSD.org> wrote: > > Hello, > > [...] > > >Environment: > > FreeBSD 4.6.1-RELEASE-p10 > > >Description: > > File operation problem. Running the > following: > > > > write(fd, buffer, 8K); > > ftruncate(fd, 0); > > write(fd, buffer, 1); > > off = lseek(fd, 0, SEEK_END); > > printf("%d", off); > > > > Output: 24576, expected: 1. > > Can't reproduce on 4.6-STABLE: > > $ uname -a > FreeBSD golf.macomnet.net > 4.6-20020805-MACOMNET-STABLE FreeBSD > 4.6-20020805-MACOMNET-STABLE #19: Fri Sep 20 > 17:09:52 MSD 2002 > maxim@golf.macomnet.net:/usr/obj/usr/src/sys/GOLF > i386 > $ rm test.file > $ ./trunc > file offset=1, expected 1 > $ ls -l test.file > -rw-r--r-- 1 maxim staff 1 23 ΣΕΞ 13:55 test.file > $ > > > The size of the actual file is 1 (if you ls -l on > it). However, > > lseek goes way past it... > > > > Noticed this while running connectathon rewind > test (part of special > > test suite). But fails even if don't go over NFS > but just run on the > > local file system. > > > > I suspect the problem is with the FS cache. Or > perhaps lseek and/or > > ftruncate are just broken... > > [...] > > -- > Maxim Konovalov, maxim@FreeBSD.org > > __________________________________________________ Do you Yahoo!? New DSL Internet Access from SBC & Yahoo! http://sbc.yahoo.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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