RE: [Xen-devel] hdc: lost interrupt - Adam Sulmicki - com.xensource.lists.xen-devel

6 messages in com.xensource.lists.xen-develRE: [Xen-devel] hdc: lost interrupt

From	Sent On	Attachments
David F Barrera	21 Jan 2005 14:07
Ian Pratt	21 Jan 2005 14:28
Adam Sulmicki	22 Jan 2005 21:04
Ian Pratt	23 Jan 2005 03:01
Natasha Jarymowycz	24 Jan 2005 05:45
Mike Kershaw	24 Jan 2005 07:30

Subject:	RE: [Xen-devel] hdc: lost interrupt
From:	Adam Sulmicki (ad...@cfar.umd.edu)
Date:	01/22/2005 09:04:55 PM
List:	com.xensource.lists.xen-devel

I am seeing a kernel message, "hdc: lost interrupt", when running LTP on the xen0 domain. The first time I saw the 'kernel: hdc: lost interrupt' in /var/log/messages, I was running LTP on both xen0 and xenU domains.

We've had one or two reports of interrupt related weirdness. We're hoping (perhaps optimistically) that these might go away when the IOAPIC configuration code gets moved out of Xen and into domain 0, getting upgraded to 2.6 code in the process.

I'm not sure if it is xen related or not but when I put following in /etc/exports

/ 10.0.10.5/24(ro,sync,no_root_squash)

and then procedeed to use dom0 as nfs root server, it would hung pretty reliably with "dma timeout" errors, and require power-cycle. the fix was to replace "sync" with "async" as shown below.

/ 10.0.10.5/24(ro,async,no_root_squash)

that was for xen 2.0.1 and 2.6.9

FWIW.