search for: blktap0

...trl.c:792: Found driver: [vmware image (vmdk)] BLKTAPCTRL[2444]: blktapctrl.c:792: Found driver: [ramdisk image (ram)] BLKTAPCTRL[2444]: blktapctrl.c:792: Found driver: [qcow disk (qcow)] BLKTAPCTRL[2444]: blktapctrl.c:792: Found driver: [qcow2 disk (qcow2)] BLKTAPCTRL[2444]: blktapctrl_linux.c:86: blktap0 open failed BLKTAPCTRL[2444]: blktapctrl.c:859: couldn''t open blktap interface BLKTAPCTRL[2444]: blktapctrl.c:922: Unable to start blktapctrl I''ve also attached the output from /var/log/xen/xend.log when attempting to bringup the Windows domU. When the Windows domU VHD file was...

...TAPCTRL[6569]: blktapctrl.c:790: Found driver: [ramdisk image (ram)] BLKTAPCTRL[6569]: blktapctrl.c:790: Found driver: [qcow disk (qcow)] BLKTAPCTRL[6569]: blktapctrl.c:790: Found driver: [qcow2 disk (qcow2)] BLKTAPCTRL[6569]: blktapctrl_linux.c:92: couldn't find device number for 'blktap0' BLKTAPCTRL[6569]: blktapctrl.c:857: couldn't open blktap interface BLKTAPCTRL[6569]: blktapctrl.c:916: Unable to start blktapctrl This appears to be because blktapctrl is trying to open one of these /sys/class/xen/blktap0/dev /sys/class/misc/blktap0/dev # strace -f /usr/lib/x...

...s / issues: - After installation and basic configuration, I added xend to default rc, and then rebooted. I always get some error when I start xend (or its started at boot), mainly with blktap: if I generate a dom0 kernel with only backend drivers (as told in Gentoo Xen How To), xend says blktap0 is already mounted. But if I use a dom0 kernel with backend drivers in kernel and fronted drivers as modules, xend complaints about not available slot to mount blktap0. Is there any way to check status of /dev/blktap0? - When I try to start VM (images downloaded from web), or create it w...

Have an interesting one here, originally found on xen 4.1.0 but just upgraded to xen 4.1.1 and it''s still here. Creating a VM with a tap2 device pointed at /dev/mapper/something, when that device doesn''t exist, causes the tapdisk2 process to go into D mode and also manages to take out any process that queries it. For example, I have /dev/mapper/nathanxenuk1 as a valid disk

...246,2 886671 /dev/xen/blktap-2/blktap2 tapdisk 32520 root 19u CHR 246,2 0t0 886671 /dev/xen/blktap-2/blktap2 gtc-vana-005 ~ # lsof -p 32491 | grep blktap-2 tapdisk 32491 root mem CHR 246,0 903999 /dev/xen/blktap-2/blktap0 tapdisk 32491 root 14u CHR 246,0 0t0 903999 /dev/xen/blktap-2/blktap0 I then migrate this VM off to another host: migration target: Ready to receive domain. Saving to migration stream new xl format (info 0x0/0x0/1450) Loading new save file <incoming migratio...

...;t open gnttab device xen be core: xen be core: can''t open gnttab device ..... domUs start, but these errors continue on dom0 Configuration: dom0: Ubuntu 8.10 xen_major : 4 xen_minor : 0 xen_extra : .1-rc3 # udevinfo --version 124 # ls /dev/xen blktap0 evtchn pci_iomul latest linux-2.6.18-xen domUs: Ubuntu 10.04 and Centos 5 64bit latest linux-2.6.18-xen I failed to find any CONFIG options for GNT in kernel configs. -- Nerijus _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists...

...# tap-ctl allocate /dev/xen/blktap-2/tapdev0 # tap-ctl spawn tapdisk spawned with pid 2004 # tap-ctl attach -p 2004 -m 0 # tap-ctl open -p 2004 -m 0 -a vhd:/tmp/tkoan.22561/test.vnd # tap-ctl list 2004 0 0 vhd /tmp/tkoan.22561/test.vnd # sfdisk /dev/xen/blktap-2/ blktap0 control tapdev0 # sfdisk -d /dev/xen/blktap-2/tapdev0 # partition table of /dev/xen/blktap-2/tapdev0 unit: sectors /dev/xen/blktap-2/tapdev0p1 : start= 2048, size= 204800, Id=83, bootable /dev/xen/blktap-2/tapdev0p2 : start= 206848, size= 2097152, Id=82 /dev/xen/blktap-2/tap...

...32-abi) blkback: ring-ref 9, event-channel 11, protocol 2 (x86_32-abi) blkback: ring-ref 10, event-channel 12, protocol 2 (x86_32-abi) blkback: ring-ref 11, event-channel 13, protocol 2 (x86_32-abi) and when i start xend i get the following: blktapctrl_linux.c:92: couldnt find device number for blktap0 blktapctrl.c:859:couldnt open blktap interface blktapctrl.c:922:unable to start blktapctrl any ideas? Ben -------- Original-Nachricht -------- Betreff: Strange network problem Datum: Mon, 03 May 2010 08:22:02 +0200 Von: Benjamin Schweikert <b.schweikert@googlemail.com> An: xen-users@l...

...: unable to handle kernel NULL pointer dereference at 0000000000000048 [1527071.220170] IP: [<ffffffff810ce73c>] apply_to_page_range+0x47/0x2f3 [1527071.220210] PGD 1e9a9067 PUD 1e9a8067 PMD 0 [1527071.220250] Oops: 0000 [#1] SMP [1527071.220282] last sysfs file: /sys/devices/virtual/blktap2/blktap0/remove [1527071.220315] CPU 0 [1527071.220340] Modules linked in: xt_state xt_physdev tun ip6table_filter ip6_tables nfs lockd fscache nfs_acl auth_rpcgss sunrpc bridge stp ipt_REJECT xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 iptable_filter ip_tables x_tables blk...

...KTAPCTRL[24550]: Found driver: [vmware image (vmdk)] Dec 26 12:45:49 vps-main BLKTAPCTRL[24550]: Found driver: [ramdisk image (ram)] Dec 26 12:45:49 vps-main BLKTAPCTRL[24550]: Found driver: [qcow disk (qcow)] Dec 26 12:45:49 vps-main BLKTAPCTRL[24550]: couldn't find device number for 'blktap0' Dec 26 12:45:49 vps-main BLKTAPCTRL[24550]: Unable to start blktapctrl I sucesfully load xenblktap manually with modprobe, restart xend but with any luck about tap:aio hanging in domU. xm block-attach is also not working. Can anyone help please to solve this issue? Is tap:aio supported o...

...8: Found driver: [ramdisk image (ram)] BLKTAPCTRL[1091]: blktapctrl.c:738: Found driver: [qcow disk (qcow)] BLKTAPCTRL[1091]: blktapctrl.c:738: Found driver: [qcow2 disk (qcow2)] BLKTAPCTRL[1091]: blktapctrl.c:738: Found driver: [ioemu disk] BLKTAPCTRL[1091]: blktapctrl_linux.c:21: Created /dev/xen/blktap0 device # # uname -r 2.6.18.8-xen # xm create -c /mnt/xenU Using config file "./xenU". # Error: Device 0 (vif) could not be connected.Hotplug scripts not working. In log message i found the following message # tail -35 /var/log/xen/xen-hotplug.log /etc/xen/scripts/vif-bridge: /etc/xen/sc...

Hello, I just upgraded my 64-bits dom0 from Etch to Lenny, I am still running the 2.6.18 Xen kernel by apt-pinning it (see later). But now xend does not start anymore: ------------ xen:~# /etc/init.d/xend start Starting XEN control daemon: xendTraceback (most recent call last): File "/usr/lib/xen-3.0.3-1/bin/xend", line 40, in <module> from xen.xend.server import SrvDaemon

Get blktap2 running on pvops. This mainly adds eventfd support to the userland code. Based on some prior cleanup to tapdisk-queue and the server object. We had most of that in XenServer for a while, so I kept it stacked. 1. Clean up IPC and AIO init in tapdisk-server. [I think tapdisk-ipc in blktap2 is basically obsolete. Pending a later patch to remove it?] 2. Split tapdisk-queue into

I run my production DomU''s using Xen 3.4.1 at the moment with the old 2.6.18.x dom0 kernel. I just built a new Xen version (4.0.1-rc5) with jemerys git repo of 2.6.32.16 dom0 pvops kernel. When starting domains the go instantly into a paused state and eventually i see this error on the command line. [root@host test1]# xm create -c vps.config Using config file

After upgrade via http://download.opensuse.org/repositories/Virtualization:/openSUSE11.3/openSUSE_11.3/src/xen-4.0.1_21326_01-1.1.src.rpm with any "kotd" or 2.6.34.4-2.2-xen VFB gets broken . It worked with original  Xen 4.0, no matter of  some additional patching to support ZFS 24 has been done and 4.0 src.rpm has been rebuilt to reinstall 4.0   In particular,  virt-install fails to

Hi Konrad I encountered a bug when trying to bring offline a cpu then online it again in HVM. As I''m not very familiar with HVM stuffs I cannot come up with a quick fix. The HVM DomU is configured with 4 vcpus. After booting into command prompt, I do following operations. # echo 0 > /sys/devices/system/cpu/cpu3/online # echo 1 > /sys/devices/system/cpu/cpu3/online With