Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [snapshot]

A snapshot is a copy of data taken at a specific point in time.

A snapshot is a copy of data taken at a specific point in time.

452 questions
14
votes
2 answers

What happens to children when deleting a snapshot in vmware?

I'm new to virtualization and want to make sure I understand what will happen when I delete a snapshot Say I have a tree like this Base SnapshotA SnapshotB SnapshotC Two questions: If I delete SnapShotB does anything happen to SnapShotC?…
Cody
13
votes
3 answers

Snapshot/rollback for libvirt+KVM?

I've recently begun using KVM for my development/test environment on a Linux host system with 8G memory. Prior, I was using VMware Fusion for my virtual environment, but my Macbook only has 2G memory. I tried VMware Server and ESX on the host…
jtimberman
  • 7,511
  • 2
  • 33
  • 42
13
votes
3 answers

How to make/compare filesystem/registry snapshots in Windows?

What's a simple way to get a list of all files installed/modified and keys added/removed by a Windows (XP, Vista or 7) program installer? I'd like to take a before and after snapshot, and see what has changed. Leaving a program running while I…
username
  • 4,725
  • 18
  • 54
  • 78
12
votes
3 answers

Proper way of handling LXC containers on btrfs

Lets say we have one server with lxc installed, and a lxc container used for as a base img /var/lib/lxc/ubuntu_base. For simplicity let's forget the config changes after copying the base img. some people suggest using subvolumes and snapshots for…
zidarsk8
  • 384
  • 1
  • 3
  • 12
11
votes
3 answers

Can NetApp Snapshots be used as Backups?

Our shop relies very heavily on NetApp Volume Snapshots for backups. We use traditional agent-based tape backups for some of our data but by and large we rely on the Snapshots for the majority of our systems. Furthermore we do not have a rigorous…
user62491
11
votes
2 answers

Why does OpenStack distinguish images from snapshots?

Usually, https://serverfault.com/a/268727/126950: snapshot = an exact capture of what a volume looked like at a particular moment in time, including all it's data. image = a total snapshot of a system (doesn't save the user data) However,…
Franck Dernoncourt
  • 940
  • 1
  • 12
  • 28
10
votes
2 answers

Backup of running KVM qcow2 VPS

I want a robust method of taking backup of KVM VPS of qcow2 file, while running. After searching for a long time I found that we can use rsync for live backup. I used following command for rsync: rsync -avh /vms/base.qcow2 /backup/backup.qcow2 It…
Bosco D'mello
  • 101
  • 1
  • 1
  • 4
9
votes
1 answer

How can I restore an LVM snapshot without deleting the snapshot?

Steps to reproduce create a snapshot of a volume using lvm lvcreate -L 200GB -s -n snapshotname /dev/hostname-vg/root make changes to the filesystem restore the filesystem to the state it was in when the snapshot was made lvconvert --merge…
falsePockets
  • 195
  • 5
9
votes
2 answers

How to hot backup/snapshot an ext4 partition (in the absence of LVM)?

I'm currently tasked with bringing up a existing server to (at least more) professional standards - with as little disruption as possible to end-users. To have a proper rollback, I need to backup the existing server's root fs, which is currently…
Roman
  • 3,825
  • 3
  • 20
  • 33
9
votes
4 answers

Which filesystems offer snapshot functionality for users to recover data?

I'm working on a project that will teach linux to youth. Knowing they will have a tendency to delete or corrupt items in their home directories we are looking for a good snapshot option. We will not have access to fancy tools available from major…
Gray Race
  • 833
  • 2
  • 10
  • 20
8
votes
1 answer

RDS snapshot: how long does I/O suspension occur?

As we're relying on RDS Postgresql manual backup for our backup strategy, we encountered the issue with the possible downtime of the RDS instance (single AZ) during snapshot creation. According to AWS: Creating this DB snapshot on a Single-AZ DB…
Arcobaleno
  • 191
  • 1
  • 3
8
votes
2 answers

How to know the snapshot completion time in AWS EC2?

I started a snapshot of 1TB volume that carries 750GB of data in AWS EC2 without shutting the instance down. It gave completed status, progress 100% when I noted after 10hrs. I can see the started time. But how to know the exact completion time of…
supercontra
  • 225
  • 1
  • 3
  • 10
8
votes
4 answers

How to set the number of snapshots zfs-auto-snapshot should retain?

Using the below zfs-auto-snapshot commands, how to specify to keep 52 weekly snapshots and infinite number of monthly snapshots? sudo zfs set com.sun:auto-snapshot=true storage sudo zfs set com.sun:auto-snapshot:weekly=true storage sudo zfs set…
Greg
  • 1,557
  • 5
  • 24
  • 35
8
votes
2 answers

How to delete a btrfs snapshot?

I'm new to btrfs and I am trying to delete some snapshots I made a few months ago. They're taking up about 20GB of space, and I need that space back. This seems to list the snapshots: ↪ sudo btrfs subvolume list / ID 257 gen 82021 top level 5 path…
mlissner
  • 990
  • 3
  • 8
  • 17
8
votes
3 answers

Backing up VirtualBox VMs

Does anyone have a good complete strategy for backing up a bunch of virtual machines running under VirtualBox? I intend to run a handful of virtual machines on a single hardware platform and back them up nightly to external disks, which will be…
James Green
  • 895
  • 1
  • 9
  • 23
1
2
3
…
30 31