From: Lou Langholtz <ldl@aros.net>
To: Christoph Hellwig <hch@infradead.org>
Cc: Andrew Morton <akpm@digeo.com>,
linux-kernel@vger.kernel.org, pavel@ucw.cz
Subject: Re: [RFC][PATCH] nbd driver for 2.5+: fix locking issues with ioctl UI
Date: Wed, 25 Jun 2003 12:16:10 -0600 [thread overview]
Message-ID: <3EF9E6EA.6050901@aros.net> (raw)
In-Reply-To: <20030625184423.A29537@infradead.org>
Christoph Hellwig wrote:
>On Wed, Jun 25, 2003 at 11:38:43AM -0600, Lou Langholtz wrote:
>
>
>>Yes. To be fair though, the binary (and the driver too) was broken on
>>linux 2.5 kernels long before I even proposed any changes to the nbd
>>driver. I'm trying to fix that.
>>
>>
>Hey, I didn't say changing the interface is wrong. But if possible
>do it in a way that the new userspace can still support the old kernel
>driver.
>
Agreed! Will do, but how???
>>NBD_SET_SOCK. That'd tell nbd-tool that the nbd driver thinks something
>>about the ioctl was invalid but not what. I wanted to return EDEPRECATED
>>instead but I haven't found that errno yet. I could overload an errno
>>but that seems ugly too. Or the driver could have a NBD_GET_VERSION
>>ioctl. Is there precedence for that? I haven't come accross it yet.
>>
>>
>
>That's one choice. At least md and device mapper do that.
>
>
Cool! I'll take a look at these. Is this the prefered way then? There's
probably a lot of need for this generally speaking. Thought about using
/proc for this too. And then sysfs is gaining favor so maybe in there?
Any preference?
next prev parent reply other threads:[~2003-06-25 18:02 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-25 6:51 [RFC][PATCH] nbd driver for 2.5+: fix locking issues with ioctl UI Lou Langholtz
2003-06-25 7:19 ` Andrew Morton
2003-06-25 14:24 ` Lou Langholtz
2003-06-25 15:36 ` Lou Langholtz
2003-06-25 15:55 ` Christoph Hellwig
2003-06-25 17:38 ` Lou Langholtz
2003-06-25 17:44 ` Christoph Hellwig
2003-06-25 18:16 ` Lou Langholtz [this message]
2003-06-25 18:19 ` Christoph Hellwig
2003-06-25 17:58 ` Anyone for NBD maintainer [was Re: [RFC][PATCH] nbd driver for 2.5+: fix locking issues with ioctl UI] Pavel Machek
2003-06-25 18:21 ` Lou Langholtz
2003-06-25 18:30 ` Pavel Machek
2003-06-25 21:35 ` Lou Langholtz
[not found] ` <Pine.LNX.4.10.10306251645580.11076-100000@clements.sc.steeleye.com>
2003-06-25 21:09 ` NBD maintainer change [was Re: Anyone for NBD maintainer] Pavel Machek
2003-06-25 17:48 ` [RFC][PATCH] nbd driver for 2.5+: fix locking issues with ioctl UI Paul Clements
2003-06-25 17:56 ` viro
2003-06-25 18:57 ` Lou Langholtz
2003-06-25 19:41 ` Lou Langholtz
2003-06-25 20:00 ` Paul Clements
2003-06-25 22:17 ` Lou Langholtz
2003-06-28 17:13 ` Paul Clements
2003-06-30 16:10 ` Lou Langholtz
2003-06-28 17:20 ` [PATCH] nbd: maintain compatibility with existing nbd tools Paul Clements
2003-06-29 18:42 ` Pavel Machek
2003-06-29 21:04 ` [PATCH 2.5.73] " Paul Clements
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