From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Christopher S. Aker" Subject: Xen 4.1 + 3ware 9690SA = rejecting I/O to offline device Date: Mon, 11 Oct 2010 17:44:56 -0400 Message-ID: <4CB38558.5060207@theshore.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen devel List-Id: xen-devel@lists.xenproject.org In an effort to fix the problem described in my previous xen-devel post ("New CPUS, now get: NETDEV WATCHDOG: eth0: transmit timed out"), we've come across another problem. 3ware 9690SA cards to not behave under Xen 4.1 (as of cs 22155). We have a simple Xen thrash test suite which fires up domUs that do different workloads (some swap thrash, some kernel build, some spin CPUs, some cycle rebooting, etc). Almost immediately after launching the suite we can get the 3ware 9690SA card to fail with something like the following: sd 0:0:0:0: WARNING: (0x06:0x002C): Command (0x28) timed out, resetting card. sd 0:0:0:0: WARNING: (0x06:0x002C): Command (0x0) timed out, resetting card. sd 0:0:0:0: rejecting I/O to offline device sd 0:0:0:0: rejecting I/O to offline device Under a 2.6.32 dom0 it sometimes also triggers Xenwatch like so: http://theshore.net/~caker/xen/BUGS/9690SA/xenwatch.txt Results matrix: +---------------------------------------------------------------+ | Xen | Dom0 | 9550SXU | 9690SA | 9750 | +---------------------------------------------------------------+ | 3.4.1 | 2.6.18.8-931-2 | OK | OK | OK | | 3.4.4-rc1-pre | 2.6.18.8-931-2 | OK | OK | OK | | 3.4.4-rc1-pre | 2.6.32.23-g41a85de5 | OK | OK | OK | | 4.1 @ 22155 | 2.6.18.8-931-2 | OK | FAIL | OK | | 4.1 @ 22155 | 2.6.32.23-g41a85de5 | OK | FAIL | OK | +---------------------------------------------------------------+ The failures were verified on at least 2 machines of identical specification. The same dom0 kernels that produce a stable 9690SA under Xen 3.4, bomb under Xen 4.1. -Chris