Messages in this thread | | | Date | Thu, 6 Mar 1997 10:01:19 +0100 | From | Dario_Ballabio@milano ... | Subject | Re: Kernel 2.0.29 - Ultrastor SCSI messages |
| |
%UATTACH >Cc: linux-kernel@vger.rutgers.edu >References: <199703052123.WAA22640@milano.europe.dg.com> >Dario_Ballabio@milano.europe.dg.com wrote: >> >> %UATTACH >> >"Kernel 2.0.29 - Ultrastor SCSI messages" >> >I compiled a new kernel 2.0.29. I have a SCSI adaptor (Ultrastor 14F), a >> >SCSI HD and a SCSI CDROM. When I reboot with the new kernel, I get a >> >lots of the following messages. >> > >> >U14F0: ihdlr, mbox 3, err 0x92:0, target 0.0:0, pid 909, count 1153 >> > >> >I get these messages after ending an "startx" session. >> > >> Any time an i/o operation completes in error, the interrupt handler >> in u14-34f prints a line of warning like the above. >> On error 0x92 (data over/underrun) the driver retries (up to 64 times) >> until the operation succeeds, otherwise it reports the error to the >> scsi upper layer. If there were no further messages from the driver >> or the scsi subsystem, you can safely ignore the warning: the error >> has been recovered. >> This kind of error is likely with old firmware revisions and also >> with the latest one in case of heavy sequential i/o (using big >> record sizes). Basically it means that the board has been stressed >> at its limits and a little over, and the driver is doing its best >> in order to avoid that the upper scsi layer could gets upset and take >> inappropriate abort/reset actions in this transient situation. >> Users can notice this errors when upgrading from 1.2.13 to 2.0.x, >> since the performance improvement of 2.0.x trigger more problems >> in the Ultrastor firmware. >> >> db > >What can I do before compiling a new kernel to stop seeing these kinds >of messages? I turned off all "probe all LUNS devices" and "SCSI verbose >error messaging" etc. > >Are the kernel 2.0.x kernels, giving messages like this to UltraStor >only? Is there any 2.0.x kernel that will stop giving these kinds of >messages? > >TIA. > >SubbaRao > Using stock 2.0.29 and a good line editor, like vi, edit u14-34f.c and perform the command: :1323,1327d :w :q I guarantee that the nasty messages will go away forever. db
| |