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Mon, 26 Jul 2021 11:28:28 -0500 Received: (from bmarzins@localhost) by octiron.msp.redhat.com (8.14.9/8.14.9/Submit) id 16QGSRth024129; Mon, 26 Jul 2021 11:28:27 -0500 Date: Mon, 26 Jul 2021 11:28:27 -0500 From: Benjamin Marzinski To: lixiaokeng Message-ID: <20210726162827.GH3087@octiron.msp.redhat.com> References: <37767722-8e6c-4176-d234-87134c21cd4c@huawei.com> <20210722214253.GC3087@octiron.msp.redhat.com> <85cb30a7-a873-b33d-4105-6e3e9675f105@huawei.com> <20210723165603.GE3087@octiron.msp.redhat.com> <02cba2a5-3fcf-bca9-d887-f8a3c0300582@huawei.com> MIME-Version: 1.0 In-Reply-To: <02cba2a5-3fcf-bca9-d887-f8a3c0300582@huawei.com> User-Agent: Mutt/1.5.23 (2014-03-12) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-loop: dm-devel@redhat.com Cc: linfeilong , dm-devel mailing list , Martin Wilck , "liuzhiqiang \(I\)" Subject: Re: [dm-devel] [Question] multipathd.service start failed when /var/run isn't mount X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Mon, Jul 26, 2021 at 08:22:49PM +0800, lixiaokeng wrote: > > >> After sdb mounted to /var, we can start multipathd service successfully. > > > > But when the binaries were compiled, if /var/run existed and was a > > symlink in your build environment, then RUN should equal "run", and > > multipath should should be using /run instead of /var/run, right? > > > > This is why I asked what multipath packages are you using. > > > This problem is found in 0.7.7. Sorry. I wasn't very clear with what I was asking for. Unless I'm missing something here, if multipathd is trying to use /var/run, that means that when the multipathd binary was compiled, it was compiled on a machine where /var/run was not a symlink. So, I'm wondering where your multipathd binary got compiled. Are you using a packaged version from a distribution like RHEL, SLES, Fedora, Ubuntu, etc? Did you compile it yourself? When I run multipathd under strace, I can see: openat(AT_FDCWD, "/run/multipathd.pid", O_WRONLY|O_CREAT, 0644) = 3 The multipathd binary I'm using was compiled on a machine where /var/run is a symlink to /run, so multipathd directly uses /run, instead of using /var/run. I'm assuming that whatever machine your multipathd binary was compiled on, /var/run was a directory. Do you know if that's possible? -Ben > > Regards, Lixiaokeng -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel