lkml.org 
[lkml]   [2004]   [Feb]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: dm core patches
On Mon, Feb 16, 2004 at 09:19:45AM +0100, Lars Marowsky-Bree wrote:
> On 2004-02-13T17:08:59,
> Arjan van de Ven <arjanv@redhat.com> said:
>
> > one thing you can do is provide a way for drivers to wake the userspace
> > tester early. Say by default it polls every minute, but if the fiber
> > channel driver gets a LIP UP event it (via a central API) makes the
> > userspace daemon *now*.
>
> I may be missing something obvious, but a LIP UP should be accompanied
> with a round of 'device detections' on that link, which already should
> trigger a few hotplug events, no?
>
> So this seems pretty much solved.

not normaly; there are several reasons the loop can bounce briefly and right
now the fiber drivers don't notify linux of that every time. Maybe that's
for the better .... if it's a frequent thing that is short-timed then it
would be obscene to yank the disks from under the user (and force-umount his
fs) every few hours..

while in multipath you do want to at least stop using the current path if
there is another path that is not in negotiation...
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2005-03-22 14:00    [W:0.774 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site