Re: [uml-user] UML and Disk Write Cache

2005-12-30 Thread Chris Lightfoot
On Sat, Dec 31, 2005 at 12:36:50AM +0100, Juraj Holtak wrote: > I still do not understand, why the guests became that much slow. Could > somebody explain me why? Very probably you're suffering from seeing the real seek performance of the disks. Switching on the write cache hides this, at the cost

Re: [uml-user] host with kernel 2.6.12

2005-12-30 Thread Matt Zimmerman
On Thu, Dec 15, 2005 at 03:41:20PM +0100, Blaisorblade wrote: > On Thursday 15 December 2005 13:19, Stefano Melchior wrote: > > On Sun, Dec 04, 2005 at 08:20:41PM +0100, Jean-Michel Caricand wrote: > > Hi Jean-Michel > > > whay don't you add the following to the /etc/apt/sources? > > > deb http:/

[uml-user] UML and Disk Write Cache

2005-12-30 Thread Juraj Holtak
Hi, I`m not reporting a bug, just an experience. My server UPS died today and I can`t get a replacement because the highway is closed because of heavy heavy snowfall. :-) Of cause, a power failure is preprogrammed under this conditions. So in my paranoia, I disabled write caching for my harddriv

Re: [uml-user] seg fault while using UML

2005-12-30 Thread Jeff Dike
On Wed, Dec 28, 2005 at 02:16:49PM -0800, noel anderson wrote: > Kernel panic - not syncing: Attempted to kill init! > > EIP: 0073:[<4001583f>] CPU: 0 Not tainted ESP: 007b:bf9396dc EFLAGS: 00200246 > Not tainted > EAX: ffda EBX: 007f ECX: bf9394b0 EDX: 0003 > ESI: 40017264 E

Re: [uml-user] Why I have to use 'devfs=mount' to boot Fedora Core 3 base?

2005-12-30 Thread Blaisorblade
On Friday 30 December 2005 17:19, Xinhuan Zheng wrote: > On 12/30/05, Blaisorblade <[EMAIL PROTECTED]> wrote: > > Yep - udev requires sysfs. > > But I didn't suggest using udev - however it would work (i.e. create ubd > > nodes) however for a recent enough kernel. > I did creating them in uml-test

Re: [uml-user] Why I have to use 'devfs=mount' to boot Fedora Core 3 base?

2005-12-30 Thread Xinhuan Zheng
On 12/30/05, Blaisorblade <[EMAIL PROTECTED]> wrote: Yep - udev requires sysfs.But I didn't suggest using udev - however it would work (i.e. create ubdnodes) however for a recent enough kernel. I agree. I'm using 2.6.11 kernel, probably not recent enough. See your distro policy - possibly it must

Re: [uml-user] Why I have to use 'devfs=mount' to boot Fedora Core 3 base?

2005-12-30 Thread Blaisorblade
On Friday 30 December 2005 16:51, Xinhuan Zheng wrote: > I guess udev should walk through /sys/devices and create all device nodes, > including ubd device nodes. But I note that from uml-test:/var/log/message: > start_udev: Starting udev: failed. Could it be /sys not mounted as sysfs? Yep - udev

Re: [uml-user] Why I have to use 'devfs=mount' to boot Fedora Core 3 base?

2005-12-30 Thread Xinhuan Zheng
I guess udev should walk through /sys/devices and create all device nodes, including ubd device nodes. But I note that from uml-test:/var/log/message: start_udev: Starting udev:  failed. Could it be /sys not mounted as sysfs? uml-test has /sys directory but not mounted as sysfs. I don't know how to

Re: [uml-user] guest soft lockup after mounting root fs in skas mode

2005-12-30 Thread Blaisorblade
On Friday 30 December 2005 13:26, Juraj Holtak wrote: > Am Freitag, den 30.12.2005, 12:09 +0100 schrieb Blaisorblade: > > On Monday 26 December 2005 20:51, Juraj Holtak wrote: > > > Am Montag, den 26.12.2005, 20:15 +0100 schrieb Blaisorblade: > > 1) if my binaries don't run there some host problem

Re: [uml-user] Why I have to use 'devfs=mount' to boot Fedora Core 3 base?

2005-12-30 Thread Blaisorblade
On Friday 30 December 2005 12:30, Tim Warnock wrote: > > DevFS has disappeared starting from 2.6.13/14 IIRC. > > I've never used it so I wont miss it, but what happened to it? Search on Google for more deep news (there are huge flames about the issues, and big FAQs to cope with the flames), howev

RE: [uml-user] Why I have to use 'devfs=mount' to boot Fedora Core 3 base?

2005-12-30 Thread Tim Warnock
> > DevFS has disappeared starting from 2.6.13/14 IIRC. > I've never used it so I wont miss it, but what happened to it? Thanks Tim Warnock ISP Technical Manager getonit internet 1300 88 00 97 timoid (at) getonit.net.au --- This SF.net emai

Re: [uml-user] Why I have to use 'devfs=mount' to boot Fedora Core 3 base?

2005-12-30 Thread Blaisorblade
On Friday 30 December 2005 05:37, Xinhuan Zheng wrote: > I've bootstrapped uml host 'uml-test', which is downloaded from > www.stearns.org/uml-root/, root_fs.fc-3-base.pristine.20050605.bz2. I have > to use 'devfs=mount' to make it, otherwise, I'll get 'Unable to open > initial console' error. Here

Re: [uml-user] guest soft lockup after mounting root fs in skas mode

2005-12-30 Thread Blaisorblade
On Monday 26 December 2005 20:51, Juraj Holtak wrote: > Am Montag, den 26.12.2005, 20:15 +0100 schrieb Blaisorblade: > > > Same problem? Guess not, post the failures. > > > > Ok, correction - I see the same result - disable CONFIG_DEBUG_SPINLOCK > > probably. > > > > It's a debug option anyway - di