From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian May Subject: Re: RHEL6.2: path failures during good path I/O Date: Mon, 18 Jun 2012 12:03:39 +0200 Message-ID: <4FDEFCFB.70202@linux.vnet.ibm.com> References: <4FD87335.3040300@linux.vnet.ibm.com> <20120613131613.GA18293@redhat.com> <4FDA3840.9030307@linux.vnet.ibm.com> <20120614211928.GA30587@redhat.com> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120614211928.GA30587@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: Mike Snitzer Cc: device-mapper development List-Id: dm-devel.ids Sorry, I did a mistake when testing with RHEL6.1....the multipath daemon was stopped. So, also with RHEL6.1. I've noticed path failures. I'm trying to do some more testing - maybe it's related to I/O workload. For my regular tests I'm attaching 10 SCSI LUns to the host system via two pathes. On each multipath device 4 partitions will be created. Five multipath devices are going to be used for filesystem I/O, the remaining five for block I/O. Currently I have just fs-I/O started and so far - 1h - no path failures occured. I will start block I/O later.... My guess why it could be device-mapper related is based on SLES11SP1 bugzilla 62249 multipath-tools: multipath device path failure without error injection. Am 14.06.2012 23:19, schrieb Mike Snitzer: > On Thu, Jun 14 2012 at 3:15pm -0400, > Christian May wrote: > >> I couldn't recreate the path failures on the exact same test setup >> with RHEL6.1. >> >> Something must have been changed in the device-mapper package!? > It is good to know 6.1 works and 6.2 doesn't for you. But I'm not > understanding why you're thinking it is a device-mapper-multipath > issue (not kernel issue). > > You could do a couple things: > 1) run the RHEL6.2 kernel on a RHEL6.1 install > 2) install RHEL6.1 device-mapper-multipath package on RHEL6.2 install > > If both work then it implicates the RHEL6.2 device-mapper-multipath > package. > > But all being said, please just file a BZ at bugzilla.redhat.com >