![]() Glance error Error in store configuration, adding images to store is disabled. Glance in combination with docker provokes "broken pipe" error when uploading a bigger docker image file. ![]() Asked: Uploading glance image with direct flag. Please start posting anonymously - your entry will be published after you log in or create a new account. This also supports snapshoting and zlib compression. This image is represented in fixed size block devices in a file. Read about kvm virtualization the types of filesystem it supports and how to create a qcow2 disk, the concept would become clear. Or provide me few links to understand this concept. Please explain me the full process how this actually happens in-depth. During the installation time we will specify the HDD partition to be used. You can support us by downloading this article as PDF from the Link below.In a normal machine we use the iso and install the OS. Forgot your password? How to reduce echo in a hall In case you would like to first create raw uncompressed image of format. Basically what we are doing is converting vdi to a raw disk images. Now lets convert VDI created to Qcow2 format using qemu. As you can see, i have VMDK file called box-disk1. Users can easily convert qcow disk images to the qcow2 format. The main difference with the original is that qcow2 supports multiple virtual machine snapshots through a new, flexible model for storing snapshots. Qcow2 is an updated version of the qcow format, intended to supersede it. It is a representation of a fixed size block device in a file. Virtual desktop infrastructure VDI is defined as the process of hosting a desktop operating system within a virtual machine VM running on a centralized server. QEMU disk image utility for Windows – Free Tool Step by step guide on using existing virtual machines with Vagrant. iso will make it very portable.This simple guide will show you the easiest way to convert VDI disk image to use on your Openstack Cloud environment. if your computer can read a cd/dvd then you'll be able to access your whatever.iso. Once you have your data in that iso container via mkisofs which is pretty universal, that data can now be accessed from nearly anywhere because isofs is universal. So whether it was data in an ext4 or xfs or btrfs partition does not matter because at that point you already have linux kernel filesystem support to access it in the first place. The fact that you have an ext4 partition is almost irrelevant, because you will be dumping that data into a container which will be in a different filesystem format. To access that iso you would simply do mount -o loop /somewhere/whatever.iso /anywhereyoulike/mywhateveriso/Įverything that was under your folder /whatever would now be accessible read-only under /anywhwereyoulike/mywhateveriso/ You will obviously have to be mindful of disk space for where you move it around to. Now you have a however large whatever.iso. Having your ext4 partition mounted as /whatever mkisofs -o /somehwere_else/whatever.iso /whatever Image backup are (almost always) the worst way to backup a filesystem. It's more useful, can be extracted easily to anywhere you want, and doesn't waste space or time copying empty or unused sectors. ![]() with tar or rsync or even cp -a) rather than an image backup. Personally, I would recommend a file copy (e.g. ![]() Or even dual-boot between Debian 9 and Debian 10. Then you can just mount the old drive somewhere on the new system. BTW, if you took an image of the entire disk rather than just a partition, you could run your old system as a VM in your new system.Īnother alternative is just to install a second disk and install the Debian 10 on that. To mount it: qemu-nbd -connect=/dev/nbd0 /path/to/backup.qcow2īoth qemu-img and qemu-nbd are in the qemu-utils package. Or, as mentioned by user1133275 in a comment, you could use process substitution: ddrescue /dev/sdXn >(ssh 'cat > backup.img')įinally, if you want a compressed, mountable filesystem you could use qemu-img: qemu-img convert -c -O qcow2 /dev/sdXn backup.qcow2 with scp) afterwards, or write it to an NFS mount. If the partition has read-errors, you might want to use ddrescue instead of cat: ddrescue /dev/sdXn /dev/sdYiĭdrescue won't write to stdout (or read from stdin, either), so if you want that backup.img on another machine, you'll have to copy it (e.g. Or if you want a progress bar while it's copying and/or control over how much buffering is used during the copy, you could use pv: pv /dev/sdXn > backup.img You could use dd instead of cat, but there's no good reason to do so: dd if=/dev/sdXn of=backup.img Or to a file or partition on another machine: cat /dev/sdXn | ssh 'cat > backup.img' As root, just cat the partition to another partition: cat /dev/sdXn > /dev/sdYi ![]()
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