similar to: Qcow files

For many months now we have been trying to create a file-backed qcow image with the qcow-create code. Each time we try to back a file with a qcow, it screams: *** buffer overflow detected ***: qcow-create terminated Below is the output from two different attempts and information about qcow-create. Any ideas/thoughts/help you can offer? Thank you for your help! -Eric [root@trogdor ~]#

i have a converted img file format i think are raw it are converted from qcow2 are it possible to convert it back to qcow2? i tryed with qemu-img convert -O qcow2 w.img w.qcow2 w.img are 75 gb fdisk w.img -l shows correct size but fdisk -l w.qcow2 shows totaly wrong! 0 mb -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, Trying to understand the current state of affairs with QCOW support in Xen with the blktap driver. It''s been made clear that a deviation from QEMU''s implementation of QCOW has occurred and that the QCOW files used in Xen must be created with the associated Xen tools only (e.g. qcow-create) and that images between QEMU and Xen are not interchangeable. My first question is

I took a gzipped qcow2 image And do a gunzip on it But what? [root@mjw vm]# fdisk w.qcow2 -l Disk w.qcow2: 0 MB, 0 bytes 255 heads, 63 sectors/track, 0 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 [root@mjw vm]# The disc should not be 0 mb!!! The disc

No i can start qemu but no network I have a bridge br0 with ta0 on it My start line qemu debian.5-0.x86.20100901.qcow --curses -net nic -net tap,ifname=tap0,script=no

Hello, This is a second post, with a trial which is different from the first one , in order to solve my blcok-attach problem. I tried the following two actions, according to the blktap readme: qcow-create 1000 qcowFile.img Creating file size 1048576000 Created cksum: 1813725440 then xm block-attach 0 tap:qcow:qcowFile.img /dev/xvda1 w 0 I see in the /var/log/xen/xend.log: [2007-03-13

yes a stupid question i no but can i install centos on only 10 gbdisc space without x and gnome and kde with the base package group etc -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100528/3165bcac/attachment.html>

Hey guys, I need to use iostat to diagnose a disk latency problem we think we may be having. So if I have this disk partition: [root at uszmpdblp010la mysql]# df -h /mysql Filesystem Size Used Avail Use% Mounted on /dev/mapper/MysqlVG-MysqlVol 9.9G 1.1G 8.4G 11% /mysql And I want to correlate that to the output of fdisk -l, so that I can feed the disk

All, is it possible to create a new KVM machine from an existing qcow (v3) image with snapshots? snapshot-list doesn't show them, when using virt-manager 1:1.5.1-0ubuntu1.1 to create the machine. * t-ad5.img: QEMU QCOW Image (v3), 42949672960 bytes chris@cd:/data/md0$ qemu-img snapshot -l t-ad5.img Snapshot list: ID TAG VM SIZE DATE VM CLOCK 1

Hi,guys, During a HVM''s running which take a qcow format image file as its own virtual disk, the qcow image file will be always read.In the situation that its qcow format image is based on a raw format image, if nesethe backingfile ,just that raw format image file,would be read .my purpose is to cache the data that is read from the backingfile when the hvm is running . Now what I concern

Hi, i would like to use qcow2-sparse-images which point to a backup-file. After reading this: http://wiki.xensource.com/xenwiki/DmUserspace i figured out that this feature seems to be unsupported by the ubuntu 8.04 LTS kernel and xen-3.2.1. Is this a ubuntu-specific problem, or is it solved in Suse, Red Hat, XenSource, whatever? When i try to block-attach it, xm displays no error, but the

On Tue, Aug 13, 2019 at 15:15:11 +0200, Petr Stodulka wrote: > Hi guys, > I had to move to the new laptop week ago and I screw migration of my virtual > machines. I recovered my virtual machines on the new laptop (virsh define) > using the backed up xml files, but I am missing any file with metadata about > snapshots. The original storage is cleaned so I cannot take these files >

Dear,Beg for your help. I am really puzzled with this problem.HVM domain can not boot up with Qcow incremental image(using command: qcow-create size incremental_file original_Qcow_img_file), but it can boot up with the original Qcow disk image file. When using Qcow incremental image, the guest qemu window would disappear before loading grub, and `xm list` can not find this guest domain.The VM

Yes, I tried to dd the mbr.bin and use both --install and --stupid parameters. The FAT32 partition is bootable. Here is what I did: $ sudo fdisk /dev/sda -l Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal):

Hi, I want to ask if anyone of you is familiar with QCOW and has used this with xen? I''ve googled a bit about and could''nt really find out if it''s a good choice or not. Has anyone experience with usage in xen and can say something about performance and snapshot usability? Thanks in advance, Alex _______________________________________________ Xen-users mailing

Not a centos specific question here, but if anyone can save me from shooting myself in the foot would appreciate any pointers.... I have an older centos 4.7 box that I recently replaced with a newer one running centos 5.3. I'd like to add the hard disk from the older one to the newer one before I scrap it for good. I don't care about the data on it, would just like the extra drive

I''ve been using lvm under centos to create the backing store for domUs and although the performance seems acceptable it has some shortcomings. The biggest of which is the LVM bug which prevents me from removing an lv (it says it is still mounted and it definitely isnt). I thought this was just a centos bug but it appears to be evident in debian and ubuntu too and I really can''t

Hi, Ady wrote: > The whole "booting business" is bigger than one specific bootloader. Too many participants at too many interfaces. > IMHO, there is more-than-enough to do about The Syslinux Project > itself Nevertheless i believe that the SYSLINUX wiki could be more tangible about what is a "normal" MS-DOS formatted disk. At least for those who seek help for

I have been messing with QCOW on Xen and I''ve come to the conclusion that nobody actually uses it otherwise it would work. Has anyone gotten QCOW2 and Xen to work reliably? I have 40 PV VMs that are identical (initially) and would like to move from separate disk images to one base image sitting in a ramdisk and the COW images hosted on an iSCSI storage device. The VMs would boot off the

I''m trying to create a pv guest with qcow/qcow2 disk image by xl, it always fails atlibxl_device_disk_local_attach. #xl create pv_config_file libxl: error: libxl.c:1119:libxl_device_disk_local_attach: cannot locally attach a qdisk image if the format is not raw libxl: error: libxl_create.c:467:do_domain_create: failed to run bootloader: -3 Does that mean we cannot create such a pv guest