* Fwd: [Fwd: Re: [Fwd: Fwd: [devel] BUG: uw-imap locking does not work on reiserfs]]
@ 2002-10-15 6:02 Michael Shigorin
0 siblings, 0 replies; only message in thread
From: Michael Shigorin @ 2002-10-15 6:02 UTC (permalink / raw)
To: devel
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----- Forwarded message from Yury Umanets <umka@namesys.com> -----
Date: Mon, 14 Oct 2002 23:44:08 +0400
From: Yury Umanets <umka@namesys.com>
To: mike@osdn.org.ua
Subject: [Fwd: Re: [Fwd: Fwd: [devel] BUG: uw-imap locking does not work on reiserfs]]
-------- Original Message --------
Subject: Re: [Fwd: Fwd: [devel] BUG: uw-imap locking does not work on reiserfs]
Date: Mon, 14 Oct 2002 23:01:40 +0400
From: Oleg Drokin <green@namesys.com>
To: Yury Umanets <umka@namesys.com>
CC: reiserfs-dev@namesys.com
Hello!
it just means that wu-imap is broken (no wonders about that.)
I will submit patch for SuSE and RedHat tomorrow, I guess.
Bye,
Oleg
On Mon, Oct 14, 2002 at 06:26:15PM +0400, Yury Umanets wrote:
>
>
>-------- Original Message --------
>Subject: Fwd: [devel] BUG: uw-imap locking does not work on reiserfs
>Date: Mon, 14 Oct 2002 17:23:08 +0300
>From: Michael Shigorin <mike@osdn.org.ua>
>To: Yury Umanets <umka@namesys.com>
>
>
>
>----- Forwarded message from Sergey Vlasov <vsu@altlinux.ru> -----
>
>Date: Sat, 12 Oct 2002 18:23:23 +0400
>From: Sergey Vlasov <vsu@altlinux.ru>
>To: ALT Discussion List <community@altlinux.ru>,
> Sisyphus ML <sisyphus@altlinux.ru>
>Subject: [devel] BUG: uw-imap locking does not work on reiserfs
>Cc: ALT Developers List <devel@altlinux.ru>
>
>Внимание, грабли!
>
>В uw-imap (по крайней мере, в версии uw-imap-2001a-alt6) не работает
>блокировка почтовых ящиков, если они находятся на файловой системе
>reiserfs (проверено с ядром 2.4.18-up-alt8). На ext2, ext3 блокировка
>работает. На других файловых системах тоже могут быть проблемы - не
>проверял.
>
>Ошибка может приводить к порче почтовых ящиков и потере сообщений.
>
>Причина, похоже, в следующем куске кода (src/osdep/unix/nfstnew.c):
>
>/* Test for NFS
>* Accepts: file descriptor
>* Returns: T if NFS file, NIL otherwise
>*/
>
>long test_nfs (int fd)
>{
> struct stat sbuf;
> struct ustat usbuf;
> struct statvfs vsbuf;
> /* Any base type that begins with "nfs" or "afs" is considered to be a
> * network filesystem.
> */
> return ((!fstat (fd,&sbuf) && !ustat (sbuf.st_dev,&usbuf) &&
> !++usbuf.f_tinode) ||
> (!fstatvfs (fd,&vsbuf) && (vsbuf.f_basetype[1] == 'f') &&
> (vsbuf.f_basetype[2] == 's') &&
> ((vsbuf.f_basetype[0] == 'n') || (vsbuf.f_basetype[0] == 'a')))) ?
> LONGT : NIL;
>}
>
>На reiserfs функция ustat возвращает f_tinode == -1, в результате чего
>uw-imap считает, что работает с NFS, и прекращает использовать
>блокировки через fcntl (остается только dotlock, но этот метод не
>работает с системными ящиками в /var/spool/mail).
>
>--
>Sergey Vlasov
>_______________________________________________
>Devel mailing list
>Devel@altlinux.ru
>http://altlinux.ru/mailman/listinfo/devel
>
>----- End forwarded message -----
>
>--
>---- WBR, Michael Shigorin <mike@altlinux.ru>
> ------ Linux.Kiev http://www.linux.kiev.ua/
>
>
>
>--
>Yury Umanets
>
--
Yury Umanets
----- End forwarded message -----
--
---- WBR, Michael Shigorin <mike@altlinux.ru>
------ Linux.Kiev http://www.linux.kiev.ua/
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2002-10-15 6:02 Fwd: [Fwd: Re: [Fwd: Fwd: [devel] BUG: uw-imap locking does not work on reiserfs]] Michael Shigorin
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