On Friday 06 June 2008, James Bottomley wrote: > On Fri, 2008-06-06 at 06:07 +0000, Chris Clayton wrote: > > On Friday 06 June 2008, Andrew Morton wrote: > > > On Sun, 1 Jun 2008 04:15:05 +0000 Chris Clayton > > > > > > > wrote: > > > > Hi, > > > > > > > > I've just started testing 2.6.26 on my desktop machine and have found > > > > that I get a long pause (20 seconds or so) as the system boots. By > > > > pause I mean that the boot messages that normally scroll by stop > > > > doing so for, as I say, about 20 seconds. > > > > > > > > I've done a bisect and arrived at: > > > > > > > > b0ed43360fdca227048d88a08290365cb681c1a8 is first bad commit > > > > commit b0ed43360fdca227048d88a08290365cb681c1a8 > > > > Author: Hannes Reinecke > > > > Date: Tue Mar 18 14:32:28 2008 +0100 > > > > > > > > [SCSI] add scsi_host and scsi_target to scsi_bus > > > > > > > > This patch implements scsi_host and scsi_target device types > > > > and adds both to the scsi_bus. > > > > > > > > Signed-off-by: Hannes Reinecke > > > > Signed-off-by: Kay Sievers > > > > Signed-off-by: James Bottomley > > > > > > > > > > > > :040000 040000 4e3140909966b4c9aa987d34ee4078d283fe0351 > > > > > > > > 46e4fd28cc537ba700eb4f5652abf043fed4d76d M drivers > > > > > > > > The config file for that kernel is attached as are the kernel log for > > > > booting that kernel and the bisect log. > > > > > > > > I've also noticed that it takes much longer for icons to appear on my > > > > desktop when I plug a usb storage device in. (The icons are > > > > shown/hidden by a simple sctript that is run via udev when the device > > > > is > > > > attached/detached.) > > > > > > Do you believe that this is the same period? 20 seconds? > > > > Thanks for the reply, Andrew. I was beginning to think that I'd committed > > an LKML sin :-) > > > > Yes, it is about the same. On 2.6.25.4 (and earlier), the icons appear > > within a second or two, but with 2.6.26-rc2 or later, it takes about 20 > > seconds. I've now built and installed -rc5 and am seeing the same > > behaviour. > > > > I've also built -rc5 on my laptop. On that my kernel uses the older IDE > > drivers rather than libata. The boot proceeds with no pause, but I do see > > the same delay in the desktop icons appearing when I attach a usb-storage > > device. > > > > > > Let me know of any way I can help solve this. > > > > > > > > Please cc me to any reply as I'm not subscribed. > > > > > > cc's added. > > > > > > Rafael, we might need to track this as a post-2.6.26 regression. > > It already is ... as I asked in the actual bug (but no-one seems to have > noticed, so I assume the bug entry isn't set up correctly). Does this > still persist with 2.6.26-rc5? The reason for asking is that it looks > very much like a silent manifestation of our scsi_bus_uevent() problem > that got fixed in 2.6.26-rc5. > Yes, I still get the boot pause and the delay in desktop icons appearing when a usb-storage device is plugged in with -rc5. A boot log is attached. Is there some sort of verbose scsi boot messaging that I can switch on? I've looked but I'm damned if I can find anything in 'make menuconfig'. Chris > James -- Beauty is in the eye of the beerholder.