lkml.org 
[lkml]   [2006]   [Nov]   [6]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateMon, 6 Nov 2006 00:38:32 -0800 (PST)
Fromdean gaudet <>
SubjectRe: [PATCH 001 of 6] md: Send online/offline uevents when an md array starts/stops.
On Mon, 6 Nov 2006, Neil Brown wrote:

> This creates a deep disconnect between udev and md.
> udev expects a device to appear first, then it created the
> device-special-file in /dev.
> md expect the device-special-file to exist first, and then created the
> device on the first open.

could you create a special /dev/mdx device which is used to 
assemble/create arrays only?  i mean literally "mdx" not "mdX" where X is 
a number.  mdx would always be there if md module is loaded... so udev 
would see the driver appear and then create the /dev/mdx.  then mdadm 
would use /dev/mdx to do assemble/creates/whatever and cause other devices 
to appear/disappear in a manner which udev is happy with.

(much like how /dev/ptmx is used to create /dev/pts/N entries.)

doesn't help legacy mdadm binaries... but seems like it fits the New World 
Order.

or hm i suppose the New World Order is to eschew binary interfaces and 
suggest a /sys/class/md/ hierarchy with a bunch of files you have to splat 
ascii data into to cause an array to be created/assembled.

-dean
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-11-06 08:41    [from the cache]
©2003-2008