similar to: Blktap userspace utils

This patch series copies the core of the tapdisk process from blktap2, with updates coming from blktap2.5. Signed-off-by: Thanos Makatos <thanos.makatos@citrix.com>

This patch series introduces the shared ring used by the front-end to pass request descriptors to tapdisk, as well as responses from tapdisk to the front-end. Requests from this ring end up in tapdisk''s standard request queue. When the tapback daemon detects that the front-end tries to connect to the back-end, it spawns a tapdisk and tells it to connect to the shared ring. The shared

This patch series introduces the tapback daemon, the user space daemon that acts as a device''s back-end, essentially most of blkback in user space. The daemon is responsible for coordinating the front-end and tapdisk. It creates tapdisk process as needed, instructs them to connect to/disconnect from the shared ring, and manages the state of the back-end. The shared ring between the

This patch series introduces the VHD library. It is based on the blktap2 one, with changes coming from the blktap2.5 one. Signed-off-by: Thanos Makatos <thanos.makatos@citrix.com>

Hi There, I''ve been trying to get this to work for the last couple of days, but found no information on the internet that would help. Essentially, a tap-ctl opencommand with a qcow2 image does not work (error code 2) and produces the following line in syslog: tap-ctl: tap-err:tap_ctl_open: open failed, err -2 I have attached a shell script that reproduces the problem on my machine. The

Hi, I''m trying to boot a PV VM I just installed (following http://wiki.xen.org/wiki/Debian_Guest_Installation_Using_Debian_Installer) without success. My XEN installation is xen-unstable 54c8c9eaee92+ on a Debian unstable machine (x86_64), kernel 3.3.4+. The VM I installed is, again, a Debian unstable x86_64. The installation went smoothly; I used an 8GB file as a disk back-end. I went

On Tue, May 5, 2015 at 2:07 PM, Johnny Hughes <johnny at centos.org> wrote: > WRT a new kernel .. the 3.18.x kernel has been selected to be maintained > as an LTS until Jan 2017. I think we should start work on rebuilding > this kernel and using it in the x4c projects. > > https://lwn.net/Articles/636289/ > > Thoughts? > > I will grab this kernel and try to roll

Hi, I''ve been working on getting a working blktap driver allowing to access ceph RBD block devices without relying on the RBD kernel driver and it finally got to a point where, it works and is testable. Some of the advantages are: - Easier to update to newer RBD version - Allows functionality only available in the userspace RBD library (write cache, layering, ...) - Less issue when

Hello, I''m currently trying to understand some problems I had in the past with mixing look-back with blktap(2) for HV and PV domains. I''m stuck reading the source code, so I''d like to get some help from the list. Interrupt me if I got something fundamentally wrong in my understanding so far: 1. With pure-HV the domU gets an emulated IDE (or whatever) disk. The

Hi,mail list members, As needed by my test, blktap/blktap2 modules have to work after new VMs start.Maybe the line about disk in the vm creation configure file is the right position where I should be supposed to specify the function of blktap/blktap2 modules.But specifically I don''t know how to configure the disk line.Who can help me? hxk

On 09/08/2014 04:59 PM, Chrysostomos Nanakos wrote: > On 2014-09-08 10:07, Thomas Goirand wrote: >> On 09/07/2014 01:44 AM, Chrysostomos Nanakos wrote: >>> dget -x >>> >>> http://mentors.debian.net/debian/pool/main/b/blktap/blktap_2.0.90-3.dsc >> >> Uploaded! Thanks for your contribution to Debian. >> >> Cheers, >> >> Thomas

Package: blktap-dkms Version: 2.0.93-0.10 Severity: serious User: debian-qa at lists.debian.org Usertags: piuparts Hi, blktap-dkms fails to build a module for Linux 4.12: Selecting previously unselected package blktap-dkms. (Reading database ... 34976 files and directories currently installed.) Preparing to unpack .../blktap-dkms_2.0.93-0.10_amd64.deb ... Unpacking blktap-dkms (2.0.93-0.10) ...

Hi Jan Back before 4.3 release you complaint about the hardcoded modprobe for blktap / blktap2 in xencommons script. I started to look into it this week and tried to do this modprobe automatically in libxl (that''s the idea we discussed before 4.3 IIRC). Unfortunately I didn''t manage to find any canonical documents on how a user space process can trigger a modprobe.

Hi folks, I met a problem: when 6 VM reboot at the same time, 3:00 morning, the Dom0 reboot it self: Xen version is 4.0.0, VMs are windows 2003 with redhat pv, they will update and reboot itself every 3:00 AM. # last ... ... admin pts/0 10.247.1.1 Fri Jun 25 03:40 - 04:30 (00:50) reboot system boot 2.6.31.13 Fri Jun 25 11:16 (00:-3) admin pts/0

Hi folks, I met a problem: when 6 VM reboot at the same time, 3:00 morning, the Dom0 reboot it self: Xen version is 4.0.0, VMs are windows 2003 with redhat pv, they will update and reboot itself every 3:00 AM. # last ... ... admin pts/0 10.247.1.1 Fri Jun 25 03:40 - 04:30 (00:50) reboot system boot 2.6.31.13 Fri Jun 25 11:16 (00:-3) admin pts/0

1. Attempt to load Nexenta under 2.6.32.16-1.2.108.xendom0.fc13.x86_64 Xen 4.0.1-rc6-pre & 2.6.32.16-1.2.108.xendom0.fc13.x86_64 on top F13 [root@fedora13 NexentaStor-Community-3.0.2]# uname -a Linux fedora13 2.6.32.16-1.2.108.xendom0.fc13.x86_64 #1 SMP Fri Jul 23 17:09:30 MSD 2010 x86_64 x86_64 x86_64 GNU/Linux [root@fedora13 NexentaStor-Community-3.0.2]# xm create -c

Changes: tools/blktap: remove unneeded pointer dereferencing in convert_dev_name_to_num tools/blktap: constify string arrays in convert_dev_name_to_num tools/blktap: fix params and physical-device parsing tools/blktap: remove unneeded pointer dereferencing from img2qcow.c tools/blktap: remove unneeded pointer dereferencing from qcow2raw.c tools/blktap2: fix build errors caused by Werror in

Using 10G interfaces on kernel 3.2 + xen 4.1.2 we''re seeing: dom0 ~9.2Gbps domU *~2.5Gbps* dmesg on domU: XENBUS: Device with no driver: device/vif/0 Is this normal? Thanks Kristoffer -- View this message in context: http://xen.1045712.n5.nabble.com/10gig-in-domU-tp5634876p5634876.html Sent from the Xen - User mailing list archive at Nabble.com.

Hi,  I''m currently stuck with creating VM which cannot boot with disk using blktap2 driver. I''ve been searching nearly a whole week and I couldn''t get a answer. When creating vm with blktap2, it keep shows a error:   libxl: debug: libxl_device.c:200:disk_try_backend: Disk vdev=xvda, backend tap unsuitable because blktap not available.  VM configuration (XML):

--------------------------------------------------------------------------- The following patch when applied on top of: libxl: attempt to cleanup tapdisk processes on disk backend destroy. Establishes correct cleanup behavior for blktap devices. This patch implements the release of the backend device before calling for the destruction of the userspace component of the blktap device. Without