Bjarne Thomsen wrote: > We have consistently encountered hard system locks > with all enterprise 2.4.18 and 2.4.19 kernels while > transferring relatively large amount of data (images) > either via ftp or NFS.
We heavily use NFS. The RPM's I was installing were on a NFS server. > We did NOT encounter any problems with the 2.4.8 > enterprise kernel from ML 8.1, so we have been using > that kernel with ML 8.2, until somebody finds a fix. > > We did not have any problem with the ordinary 2.4.18 > or 2.4.19 kernels, so the problem is only found in > the enterprise kernel. Yep, same here. Only the 9.0 2.4.19 kernels have the problem. > As an experiment I compiled one of the 2.4.18 enterprise > kernels without the HIGHMEM option (the only change made). > This kernel did not have the lock-ups, so I concluded > that the problem had something to do with the HIGHMEM > code. > > It is actually strange to me that this problem has > been so little commented, considering the low prices on RAM. We had thought it was a hardware error so we ran a bunch of tests before we reported it. > Does anybody know if this problem has been or will be fixed > in 2.4.20 ? > > Bjarne Thomsen > Department of Physics and Astronomy > University of Aarhus > Mandrake? any comment? or tips to resolve this? > On Wed, 2002-09-18 at 20:22, Bryan Whitehead wrote: > >>Testing one of our 2GB Dual-Pentium III (1ghz) machines we get a hard >>lock with kernel enterprise. >>kernel-enterprise-2.4.19.9mdk-1-1mdk.i586.rpm >> >>The lock up seems to be related to the scsi driver. aic7xxx. The last >>message that is echoed to the syslog consol is: >>kernel: (scsi0:A:0:0): Locking max tag count at 64 >> >>after that the machine is dead. No ping, but keyboard works enough for >>Alt-SysRq stuff. Only problem is Alt-SysRq keys won't work. :( syncing >>the disk results in the machine "trying" (It starts to sync the disk) >>but will never finish, there is no HD activity. Then the keyboard will >>not respond anymore. >> >>Trying to get a process list, or memory stats will finish off the lock >>also. (as in it will become so useless that reset button is only thing >>working). >> >>If my first sysrq key is to reboot it will. >> >>I ran memtest yesterday and all memory is ok. Mandrake 8.1 has no >>problems on this machine. >> >>Heavy disk activity triggers the lock, like installing an RPM. :) >> >>It will always hard lock when installing the "FlashPlayer-5.0-8mdk" RPM. >> >>any suggestions? or specific sysrq keys you'd like me to try in locked >>up state? (there is no oops or anything like that on the consol window) >> >> >>-- >>Bryan Whitehead >>SysAdmin - JPL - Interferometry Systems and Technology >>Phone: 818 354 2903 >>[EMAIL PROTECTED] >> >> > > > -- Bryan Whitehead SysAdmin - JPL - Interferometry Systems and Technology Phone: 818 354 2903 [EMAIL PROTECTED]
