Bill McGonigle <bill at bfccomputing.com> writes: > In the DomU, I'll see a lock-up, and then filesystem errors. e.g.: > > Installing : kernel [############################################ > ] 1/33EXT3-fs error (device xvda1) in ext3_ordered_writepage: IO failure > > In the Dom0, I'll see: > > sd 6:0:0:0: timing out command, waited 360s > sd 6:0:0:0: SCSI error: return code = 0x06050000 > end_request: I/O error, dev sdc, sector 37319 try xm sched-credit -d 0 60000 and see if you still have the problem. if that doesn't work, try xm vcpu-set 0 1 then edit all your domu config files and add: cpus="1-7" (assuming a dual socket quad core box... the idea is to reserve a cpu for the dom0) the idea is that if your dom0 is starved for CPU, you get all sorts of network and other I/O weirdness.