Questions tagged [snapshot]

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btrfs snapshots backup with btrbk: created snapshots are empty

I want to set up a backup mechanism with btrbk package. Here are my settings: /etc/fstab LABEL=magnolia /btrfs rw,noatime,compress=zstd:3,discard=async,ssd,space_cache,commit=120,subvolid=256,subvol=...
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1 answer
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How to determine VirtualBox vm has finished snapshot restore

I have a ubuntu host and a windows 10 guest using virtualbox. And I have written a bash script to control my vm. I want to shutdown my vm and restore snapshot, then restart it. But here is a question. ...
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45 views

How to make a snapshot of a Linux block device

It is well documented how to make snapshots of LVM volumes but how can I made a snapshot of, say, a hard-drive partition? I often wish I can do this when I need to access a disk read-only but there ...
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6 votes
1 answer
293 views

How can I save VLC snapshots in the video's path?

I know you can set the path where snapshots are saved in VLC Player's preferences. What I want is to save the snapshots not all in one fixed directory, but in the video's directory, provided of course ...
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How to make a snapshot while qemu is running?

Since a fresh booting of the guest OS is very slow, or it is laborious to arrive at a particular machine state, what I want is something like Windows' hibernation: Qemu saves the current state of the ...
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1 answer
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How can I snapshot a VM before booting it for the first time?

I'm running MS trial VM images which are time limited, based on initial boot. MS recommend you store a copy of the downloaded image or take a snapshot before booting: But how can you snapshot a VM ...
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Debian VMWare VM can't use virtual network outbound after snapshot restore

This is a Debian VM on VMWare, static IP 10.200.33.68, Network was working fine before restore. Route looks OK (default gateway is correct) 'default via 10.200.33.1 dev ens224 proto static metric 100' ...
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2 answers
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How to take full webpage screenshots with no size or length limit? (really long pages)

How can I take full webpage screenshots with no size or length limit? I want to screenshot the search results on eBay with 200 items in view but it cuts off. I have tried Firefox, Edge and Chrome's ...
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1 answer
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rebase virtualbox snapshot to another parent

I'm excessively using VirtualBox snapshots (for use in CI-builders), so typically I have a number of snapshots on a single VM. Often I find my self "forking" a new snapshot from an existing ...
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How to prevent GRUB from scanning lvm snapshot?

My root file system is a LVM2 logic volume, and there are few snapshots of it beside. Every time when I run update-grub, it always add menu entries for those snapshots as if they are normal volumes. ...
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2 answers
2k views

Is there a windows 10 equivalent for Apple Time Machine?

I made a machine for my mother who is not computer savvy. For that purpose I googled "Time Machine equivalent for windows" and found Genie Time line and really wasted my money on that... My ...
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Is stopping a VM before taking its snapshot best practice?

Background I tend to save my VirtualBox VM snapshots when the system is running. This shaves off some time when I resume next work's session. But I have read in a few places that the best thing to do ...
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1 answer
2k views

How to remove a snapper config when getting error “deleting snapshot failed”?

I am using snapper to take snapshots of btrfs volumes. I have one for /var as well, but decided that I want to get rid of it. It corresponds to the _var snapper config. I can't manage to do this, ...
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Make Snapshot of Main OS

Can I make snapshot(something like that) of my main os/host machine(Which in this case is parrot os) ? Because when I use my parrot within a month or so I end up with broken os(because of my tinkering)...
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1 answer
83 views

Can I continue use my VMware Workstation virtual machine before a snapshot completed?

I'm using VMware Workstation on Windows. When I create a snapshot while my guest VM is running, it will take long time (probably more than 10 minutes) to complete the whole process. During this period,...
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1 vote
1 answer
601 views

How to mount System Volume using APFS snapshot

I am not able to mount System Volume (root) using APFS. I only see my Data Volume. $ mkdir /tmp/snapshotbackup_root $ mount_apfs -s com.apple.TimeMachine.2019-10-29-174444.local / /tmp/...
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AWS Instance Created from Snapshot Failing "Instance reachability check"

I have a dev environment hosted by AWS (t2.large, RHEL 7.4) that is backed up with a snapshot every couple of hours. Today, I tried to create a new instance from one of those snapshots to run some ...
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1 vote
1 answer
806 views

What should happen if I delete files in a BtrFS snapshot?

I have an openSUSE computer that started with BtrFS early (like Leap 42.2). At one moment in the past the /tmp subvolume had become full (one big file) and I was not able to recover space until reboot ...
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2 answers
747 views

Create snapshot in virsh for domain with two or more disks

I would like to back up the disks of a VM following the Live-disk-backup-with-active-blockcommit procedure at Libvirt Wiki. I create an external snapshot with virsh snapshot-create-as --domain ...
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1 answer
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Vmware cannot create snapshot

I use Veeam to backup our servers, it has been running smoothly for years. Veeam creates a snapshot of the VM and than backs up this snapshot. After completion the backup job deletes the snapshot. Due ...
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Is it possible to save browser tab, including javascript variables, content of form fields, cookies, etc. for offline viewing later?

I'm trying to save a state of card in browser (preferably firefox or chrome). Is it possible? Something like snapshot in VirtualBox. Let's say I'm using javascript app that doesn't have save feature ...
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0 votes
1 answer
441 views

I moved a VM with snapshots and I now cant recover from snapshot

I moved a Virtual Machine and it's files to another pc (moved, not cloned), and now I can't recover from snapshots. I have all the files (of the VM) but no snapshots shown in the program. I need to ...
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2 votes
0 answers
747 views

Shadow Copies are properly created, but in Explorer I can’t access to “previous versions” (reported as not available)

Windows 7 Ultimate 64 bit: I always utilized the shadow copies, not only to restore the OS to a previous version: I mainly use the shadow copies to restore single files, by using the "Previous ...
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3 answers
850 views

What is the purpose of snapshots in virtualisation software?

I've recently started using virtualisation software more often, specifically VirtualBox, and the idea of snapshots confuses me. I understand that they give the user the ability to revert a VM to a ...
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1 vote
2 answers
101 views

Running du on timeshift folders give different results

My goal is to find which files/folders take the most space in a snapshot from the backup tool timeshift but, when using du it yields different results: # du -hs * 18G 2018-09-21_16-14-57 910M ...
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How to perform application-consistent backup of Git repo

Imagine I have a bare Git repository on my own hosted server that is used by multiple folks for cloning, pushing, and pulling. What commands would be necessary to get such a repository into a state ...
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1 answer
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virtualbox snapshot - is it a safe back-up if I want to over-write (dd to) sda1?

I want to do some testing useing chroot to overwrite sda1 (my main partition) in a ubuntu VM. Is taking a virtualbox snapshot a safe way to create a backup? i.e. in the VM I want to create a chroot ...
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2 votes
1 answer
1k views

Btrfs copy snapshot with rsync

So I have been searching for this up and down, but must be doing something fundamentally wrong. What I want to do: I have configured my NAS to make snapshots of my home folder, file system is btrfs. ...
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1 answer
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Suggestion on how to consolidate VMWare VM snapshots

I was given a copy of a VM with many snapshots. The size of the folder that contains the VM is about 200GB and there is about 371 snapshots in it. ls | grep [.]vmdk | wc 372 372 14513 I ...
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How to convert Virtualbox VM into KVM VM, with latest snapshot included?

I have been trying to change my existing Virtualbox VMs (.vdi) into .qcow2 format and run it on KVM. I have successfully done the conversion (.vdi > .qcow2) but, the converted VM is not in the same ...
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Taking a snapshot of a demo environment

I am using a 27" Late 2015 iMac. I have a set of applications and websites that I use as part of a demo. Currently, I have to manually load everything at the beginning of the demo and make a set of ...
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1 answer
4k views

For automating a full backup of a VM, is exporting as an appliance better than cloning the VM?

I recently had a mishap on my VM, where for somereason the settings of my BridgeNetwork got changed randomly. I had to spend quite a bit of time to figure out the root cause. Rightnow, I manually copy ...
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2 answers
3k views

Hyper-V snapshot/checkpoint behavior with physical hard disk

What is the behavior of the snapshot/checkpoint feature in Hyper-V when there are physical hard disks attached to the virtual machine? I have a virtual machine with four physical disks passed through ...
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3 answers
1k views

Test if btrfs subvolume exists

I have a problem in a bash procedure, which should port my old rsync disk backup (and archive) to my future btrfs snapshot backup. I want to use the line: # btrfs subvolume snapshot /targetdir/@...
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2 votes
2 answers
4k views

How to access a ZFS zvol SNAPSHOT block device?

I have an Ubuntu 16.04 box running ZFS. I'm using the zfs-auto-snapshot script to create regular snapshots. Included in my ZFS setup is a ZVOL block device. I want to access (read-only) a ...
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Terminal fails to show the local snapshots on my computer

I typed sudo tmutil listlocalsnapshots / in terminal and entered the password. However, nothing happened. I suppose terminal to return all local snapshots on my computer, but it only returns xxxs-...
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1 vote
1 answer
303 views

VirtualBox vdi not growing over 32 GB, NS_ERROR_CALL_FAILED when trying to delete snapshot

I am running VirtualBox 5.2.0 on Ubuntu 16.04 64-bit. The quest system is Win 10 64-bit. At some point guest went jammed because vdi disk of dynamic size 100GB refused to grow over 32GB. I have ...
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2 answers
1k views

Can I export appliance with all the snapshots in VirtualBox (Version 5.1.28)?

I use Oracle VM VirtualBox Version 5.1.28 r117968 (Qt5.6.2) . I have two virtual machines (Windows 7 64bit and Ubuntu 14.04.5 LTS) with 8 snapshots in Windows and 6 snapshots in Ubuntu. I want to have ...
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5 votes
1 answer
546 views

Is there a ZFS-aware diff?

I often make snapshots of a ZFS volume (containing AOSP) make some changes (often extracting ZIP files over then top, or running scripts) and then run diff to see what has changed. This is really ...
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0 answers
723 views

VMWare warns about consolidation after cancelling snapshot creation

I'm using VMWare vSphere client on Windows 10 to connect to my company DC (OVH). I wanted to create a snapshot of a VM (Debian) before updating the packages. So I tried to create a snapshot of a ...
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  • 113
2 votes
1 answer
631 views

How much data is transferred in case of zfs send with incremental snapshots?

My scenario is two servers in a hot-standby setup using ZFS to host VMs and using ZFS incremental snapshots for replication of changes to the VMs from one server to the other using something like zrep ...
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1 vote
1 answer
387 views

Btrfs automatically bitrot correction with snapshots?

I want to set up a notebook (debian) with 1 SSD and 1 HDD each with Luks and Btrfs on it. Because the SSD and the HDD doesn't have the same speed, i don't want to use Btrfs' Raid-1 on it, but i also ...
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1 answer
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Chrome extension to save all downloaded media for the current page

I know of winhttrack but it doesn't go well with javascript. Is there a Google extension that will save all the ressources that have been downloaded since you're visiting a site in a tab ? (all the ...
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2 votes
1 answer
1k views

How do I set up a bootable incremental ZFS-on-root backup on a seperate drive?

I installed antergos Linux with ZFS-on-root. The system is up and running and I’m glad because that alone is a success for me. Now apparently ZFS is mainly for NAS, RAID, Server configs etc. (and I ...
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1 answer
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How to setup a Ubuntu server 16.04 host machine, for running several virtual machines

i need some help with setting up my host machine for running virtual servers on ubuntu server. I have a server with 4x2TB SAS which are in raid6 using raid adapter (dell perc h730p). The idea is to ...
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3 votes
1 answer
2k views

How do I revert to latest external snapshot in KVM?

I have created an external snapshot with KVM using virsh snapshot-create-as domain --name snap1 --disk-only Then, I started the domain with “virsh start domain”. I know that reverting to external ...
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2 votes
0 answers
366 views

Does ZFS support something like "nodatacow" of BTRFS?

This is a follow up to a former question about BTRFS and in the end I want to have a file system supporting at least the manual creation of snapshots for backup and test purposes. The data I'm hosting ...
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0 votes
1 answer
2k views

How to get NTFS like snapshot behaviour in BTRFS?

I would like to use BTRFS to host VMs in VirtualBox to be able to use Snapshots without LVM or such. In theory I don't need CoW behaviour all the time because of performance reasons and using ...
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1 vote
0 answers
116 views

VM very slow after snapshot recover

We have here a Citrix XenCenter with few Virtualized machines. So last week we had to recover a VM from an old snapshot (the current one got lost because of a miss configuration in file permissions). ...
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16 votes
2 answers
25k views

Export a VM with the snapshots?

I have a machine with snapshots at different key points in the configuration. Now I need to back up this VM, with its snapshots, to another machine. I tried the "Export" function, but the .ova file ...
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