From: AntonFarygin <rider@altlinux.com> To: sisyphus@altlinux.ru Subject: Re: [sisyphus] smbfs locking in 2.4.20 Date: Tue, 11 Feb 2003 11:38:06 +0300 Message-ID: <3E48B66E.6050308@altlinux.com> (raw) In-Reply-To: <20030211005549.5cb3618f.grisxa@mail.ru> [-- Attachment #1: Type: text/plain, Size: 1651 bytes --] Grigory Batalov пишет: > Bart Oldeman из Dosemu Team обнаружил, что в ядре 2.4.20 >отсутствует блокировка файлов на smbfs. Скорее всего, >он тестировал "чистое" ядро или от Алана Кокса. > > А как обстоят дела в нашем 2.4.20-alt2/altX ? >Если у нас есть walkaround, нельзя ли его присоветовать >коллегам из Dosemu ? > К сожалению, у нас наложены патчи с этого самого нижнего URL'а ;-( Rgds, Rider > > >Begin forwarded message: > >Date: Mon, 10 Feb 2003 16:28:18 -0500 (EST) >From: Bart Oldeman <oldeman@math.ohio-state.edu> >To: Gregor Ibic <gregor.ibic@intelicom.si> >Subject: WARNING: smbfs and locking (was RE: [PATCH] (locking) (was Re: dosemu and CLIPPER locks (again)))) > > >On Mon, 10 Feb 2003, Gregor Ibic wrote: > > > >>I cant, it is locked. It says resource deadlock avoided. >> >> > >ok I browsed around a bit and looked at the kernel source, here's the real >answer. > >Current (linux kernel 2.4.20) smbfs doesn't support locking at all. > >you may look at >http://www.hojdpunkten.ac.se/054/samba >to see some experimental patches though. >NFS *does* support locking though. > >So if you see locking "working" with smbfs it is actually by accident and >not by design. > >This means that it is very well possible to corrupt your DOS databases >if you access them via smbfs, and there's nothing that DOSEMU can do about >it. > >Now, why does a Win client access the file when DOSEMU "locks" it? This is >because there actually is no lock at all! > >And the other way around, what happens is that: DOSEMU tries to apply a >lock to the file, the filesystem fails, and the DOS app hence claims that >access is denied. > >Bart > > > [-- Attachment #2: Type: application/pgp-signature, Size: 252 bytes --]
prev parent reply other threads:[~2003-02-11 8:38 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-02-10 21:55 Grigory Batalov 2003-02-11 8:38 ` AntonFarygin [this message]
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