On Fri, Oct 17, 2008 at 01:50:38PM +0200, Miroslav Lachman wrote: > Jeremy Chadwick wrote: >> On Thu, Oct 16, 2008 at 09:30:20PM +0200, Miroslav Lachman wrote: >> >>> Today I was replacing disk in one Sun Fire X2100 M2 so I tried >>> hot-swapping. It was as you said: atacontrol detach ata3, replace the >>> HDD, atacontrol attach ata3 and new disk is in the system. I tried >>> it 3 times to be sure that it was not coincidence - no panic was >>> produced ;o) >>> So in this case, hot-swapping on Sun Fire X2100 M2 with FreeBSD 7.0 >>> i386 works. >> >> >> That's excellent news. So it seems possibly the problem I was seeing >> was with "reinit" causing some sort of chaos. I'll have to check things >> on my testbox here at home to see how I caused the panic last time. >> >> Thanks for providing feedback, as usual! :-) > > Unfortunately there is one problem - I see a lot of interrupts after > disk swapping (about 193k of atapci1) > > Interrupts > 197k total > ohci0 21 > ehci0 22 > 193k atapci1 23 > 2001 cpu0: time > 1 bge1 273 > 2001 cpu1: time
Okay, so it looks like the interrupt rate on atapci1 after swapping is going crazy. What you're showing there looks like heavily modified vmstat -i output. > Full output of systat -vm 2 is attached. > > It is shown in top as 50% interrupt (CPU state) and load 1 until I > rebooted the machine (I can provide MRTG graphs). The system was not in > production load, but almost idle. (I will put it in production tomorrow). > After reboot, everything is OK. And this box is running the ATA patch Andrey provided, yes? > Can somebody test hot-swapping with SATA drives and confirm this > behavior? (I can't test it now, because machine is in datacenter) I can test it on my P4SCE box. I'll check the interrupt rates after each step of the hot-swap to see if/when the problem starts. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
