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Questions tagged [snapshot]

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3 votes
1 answer
1k 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 ...
0 votes
0 answers
14 views

What are the Vagrant limitations for VMware disks with snapshots?

The docs are a bit cryptic about this: If snapshots exist for a VM, disk functionality will be limited. What limitations does Vagrant impose exactly on a VMware VM that has snapshots?
10 votes
4 answers
12k views

How to rollback a specific directory in ZFS snapshot?

Is it possible to rollback to a certain directory within a snapshot? For example, given the snapshot tank/home@snapshot_week_01 can I rollback to something like tank/home/louis@snapshot_week_01 ...
5 votes
4 answers
25k views

Is there a Snipping tool for WIndows XP

Is there a tool available for Windows XP which is similar to the Snipping Tool for Windows 7?
0 votes
0 answers
51 views

Btrfs snapshots are empty

I am using btrbk to make snapshots of my @home subvolume, but the snapshots are empty, zero bytes. I think I need to automount home, somehow. I see in the Btrfs Assistant File Viewer that the root ...
1 vote
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 ...
0 votes
1 answer
90 views

How to unmount /home on a BTRFS system?

In order to restore a BTRFS snapshot of /home, on NixOS, the Wiki says to first unmount /home. "home must be unmounted for this operation" https://nixos.wiki/wiki/Btrfs So my question is how ...
1 vote
1 answer
134 views

How extract currently displayed frame with ffmpeg?

I'm conducting a test with a 10-second video that plays at a rate of 1 frame per second. My goal is to capture a specific frame as a snapshot. Currently, I use the following ffmpeg command for this ...
23 votes
5 answers
51k views

How do I go back to a snapshot in VirtualBox?

I've made three snapshots on VirtualBox virtual machine (Windows XP). I want to go back to Snapshot 2. If I click on "Snapshot 2" and click Start, it goes back to the current state. I can ...
3 votes
1 answer
7k views

Is stopping a VM before taking its snapshot best practice?

Background I tend to save my VirtualBox VM snapshots while 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 ...
6 votes
2 answers
2k 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 ...
2 votes
1 answer
120 views

Can I control which file jdupes preserves when using hardlinks?

The jdupes deduplication program allows you to create hardlinks, so that the files are not deleted, but linked together so that the disk space is used only once for multiple copies. Is there a way to ...
0 votes
0 answers
157 views

Btrfs local Snapshots vs Incremental remote Backup

In a NAS context, I'm wondering about the pros of btrfs local snapshots when incremental remote backup is made on a remote server. I'm also wondering about the interest to have both snapshots and ...
6 votes
1 answer
8k views

How to delete a file in all snapshots on a btrfs system?

I've set up a sophisticated backup scheme with hourly, daily, weekly, monthly backups that take up (thanks to the glory of the btrfs cow-filesystem) almost no extra space on the device. But ...
1 vote
2 answers
744 views

Accurately taking a snapshot from a video using a command line tool

I am looking for a way to take accurate screenshots from a video. Accurate to the milliseconds. I have tried using ffmpeg using the following command: ffmepg.exe -ss position-in-hours-minutes-...

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