From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51603) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f19Cr-0000oL-IW for qemu-devel@nongnu.org; Wed, 28 Mar 2018 07:25:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f19Cn-0007y4-Gu for qemu-devel@nongnu.org; Wed, 28 Mar 2018 07:25:29 -0400 Received: from mga04.intel.com ([192.55.52.120]:8692) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1f19Cn-0007xv-4I for qemu-devel@nongnu.org; Wed, 28 Mar 2018 07:25:25 -0400 From: "Liu, Jing2" References: <22f7f184-c295-4e18-c186-3fd9fdcce213@linux.intel.com> <20180323160252.GA27131@stefanha-x1.localdomain> <1e0e5f9b-18b4-7f0f-dbd1-696ef1f7039c@linux.intel.com> Message-ID: Date: Wed, 28 Mar 2018 19:25:21 +0800 MIME-Version: 1.0 In-Reply-To: <1e0e5f9b-18b4-7f0f-dbd1-696ef1f7039c@linux.intel.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [Consult] nfs-vsocks support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefan Hajnoczi Cc: yang.zhong@intel.com, qemu-devel On 3/26/2018 6:12 PM, Liu, Jing2 wrote: > Hi Stefan, > > Thank you very much for the response! It truly gave me much help. > > On 3/24/2018 12:02 AM, Stefan Hajnoczi wrote: [...] >>> Could you give me some help and thanks in advance! >> >> Here is a script that launches nfsd and runs a guest: >> https://github.com/stefanha/linux/commit/38cbc15661a6dd44b69c4f318091f2047d707035#diff-05f3fe8941076453942a8c059b409009 >> Using the script, I met some problems making the initramfs.gz. It confused me a lot... I don't have busybox under /usr/bin or /usr/sbin. Where to get it? (host)$./go.sh nfs_tcp File /usr/sbin/busybox could not be opened for reading line 55 File /lib64/libtirpc.so.3 could not be opened for reading line 306 File nc-vsock could not be opened for reading line 321 File ../netperf-2.7.0/src/netserver could not be opened for reading line 325 It results in guest kernel_panic when gdb launches the guest: [ 0.425738] Failed to execute /init (error -2) [ 0.426074] Kernel panic - not syncing: No working init found. Try passing . [ 0.427077] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.13.0+ #3 [ 0.427507] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-4 [ 0.428354] Call Trace: [ 0.428538] dump_stack+0x63/0x89 [ 0.428774] ? rest_init+0x60/0xc0 [ 0.429017] panic+0xeb/0x245 [ 0.429225] ? putname+0x53/0x60 [ 0.429455] ? rest_init+0xc0/0xc0 [ 0.429722] kernel_init+0xf1/0x104 [ 0.430017] ret_from_fork+0x25/0x30 Looking forward to the kind reply. BTW, for the following questions that I sent two days ago, I have some ideas in mind and it could be ignored now. Jing > I have updated both host and guest kernel with vsock-nfsd repo and > installed nfs-utils in both host and guest successfully. > > There're two different manuals in > https://www.spinics.net/lists/linux-nfs/msg64563.html(Quickstart 3~7) > and nfs-utils (README step 3 DAEMON STARTUP ORDER). > Which one should be the best usage? > > For the first quickstart manual step 7-Mount the export from the guest, > two questions as follows. > 1. why hypervisor's CID is 2? I didn't notice when it is specified? > 2. Though I did step 3~7 successfully, I can't see the synchronistical > changing on host folder /export/ and guest /mnt? So how to test the > communcation between host and guest on the folder? > > Thanks again! > > Jing [...] >> >> Stefan >> >