Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [snapshot]

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

1
vote
1answer
1k views

Hyper-V How to define “auto revert” to a snapshot after each reboot

I'm using the built-in Hyper-V that comes with Windows Server 2012 R2 and I'm looking for the option that lets me to set "auto revert" (or "auto apply") to a specific snapshot after the machine is ...
-1
votes
0answers
14 views

Scheduled snapshots for windows 2008 R2 VM setup

I need help setting up scheduled snapshots for a windows 2008 R2 virtual machine running on google-compute-engine. I have found several howtos for Linux but nothing for windows virtual machines. I am ...
2
votes
1answer
26 views

Can xvdc block devices on a Windows AMI be ignored?

After performing the steps in Is it possible to create an EBS AMI for windows EC2 instance? to create a Windows AMI from an "other linux" snapshot, I created an image of the fixed instance and the ...
17
votes
3answers
3k views

Is running permanently in a VMWare snapshot bad for performance?

I understand that the VMWare KB frowns upon long running snapshots mainly due to two things (In my opinion) Taking tons of snapshots can fill up the data store. Snapshots are simply delta files. ...
0
votes
0answers
9 views

Configure fog services on non-default ports

I am using fog server for deploying images on clients and take snapshots. Everything works fine when used with default ports configurations like Http on port 80, tftp on 69. Now I have configured my ...
3
votes
0answers
281 views

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 ...
0
votes
1answer
31 views

How to delete a snapshot not seen with virsh but can be seen with qemu-img info?

[msingh@centos images]$ qemu-img info IE11-Win7-VMWare-disk1.qcow2 image: IE11-Win7-VMWare-disk1.qcow2 file format: qcow2 virtual size: 40G (42949672960 bytes) disk size: 82G cluster_size: 65536 ...
1
vote
1answer
4k views

Troubleshooting 'Could Not Start' scheduled task error:

I'm trying to run snapshot on my server to back up the drive onto a local NAS server. I'm currently using this on a Win2k, Win2k3, and Win2k8 servers. Both the Win2k and Win2k8 servers are correctly ...
15
votes
13answers
14k views

Best compression for ZFS send/recv

I'm sending incremental ZFS snapshots over a point-to-point T1 line and we're to a point where a day's worth of snapshots can barely make it over the wire before the next backup starts. Our send/recv ...
0
votes
1answer
30 views

Create Azure VM from Snapshot if Disk Deleted Possible?

We deleted a VM as it was no longer needed. Prior to deleting we took a snapshot. The VM hard drive (OS) disk still exists but we're looking to clean up unused resources. If I delete this disk, can I ...
1
vote
0answers
68 views

rsync --link-dest. Time to 'building file list" incrementing

I've been running rsync as a cygwin task on Windows Server 2008 for about two months now. I'm using the --link-dest option to do a daily 'snapshot' of the contents of a server containing about 10TB ...
1
vote
0answers
48 views

Q: Unable to create 'live' snapshot of running KVM using virsh

I was kindly directed to here, Serverfault from Stackoverflow to pose my question. I'm running the following command on a RHEL7 hypervisor to create a live backup (disc image) of a running kvm, ...
3
votes
1answer
981 views

ZFS test rollback doesn't work as expected

I am confused about how ZFS snapshots and rollback are supposed to work. I have a zpool containing a couple zvols (each made from partitions of a mirrorvdev). I make a snapshot like this: ~$ sudo zfs ...
7
votes
2answers
10k views

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: ...
0
votes
1answer
66 views

AWS AMI from Snapshot - Unable to Create Instance of Same Type

I've scoured Google and the AWS developer forums pretty thoroughly (I think) and can't seem to find an answer. I'm snapshotting EBS volumes with boto3 daily for DR purposes. Some of the instances ...
0
votes
0answers
19 views

Evidences for VMWare Snapshot restoration from Guest OS

I have few VMWare servers managed by an external company and I suspect a snapshot restoration happened on one of my server (MS Windows 2008 Server). I suspected this because there was a windows ...
0
votes
2answers
2k views

VMware snapshot + An error occurred while saving the snapshot msg.snap-hot error

I am using VMware version 5.5 (that manage 57 different VM Linux machines –red-hat version 6 until 7 ) In the VSphere Client (tasks and event), I saw the following error: (on Linux machine name – ...
1
vote
3answers
41 views

Clone AWS instance and volume and apply new network settings

I have a machine instance and attached volume that I would like to clone, but apply new network settings to it. What is the best process for doing this, which will leave the original instance ...
1
vote
1answer
45 views

How to save scheduled XenServer VM backups to external drive

Server: XenServer 7.1 Management: XenCenter Goal: Have a Scheduled Snapshot saved to an external drive connected to the server via USB Issue: The server recognizes the external drive as a removable ...
0
votes
1answer
48 views

Is using snapshots in AWS a reliable way to back up data?

I am looking at backup options within AWS and while instance snapshots are the obvious way to go I am have some concerns about using that method. I'd like to take daily snapshots of each instance ...
0
votes
0answers
23 views

How do I resolve a Xen VM import that never completes but doesn't time out or print any errors?

I have several XenServers which backup their VMs to NFS storage by taking a snapshot and then exporting it to an .ova file. This is done using the script from here: https://tecadmin.net/backup-running-...
0
votes
0answers
77 views

Is there a way to make VM snapshots in PROXMOX LVM storage

Acording to official docs https://pve.proxmox.com/wiki/Storage:_LVM the LVM storage option does not support VM snapshots. You need to setup Thin LVM for snapshots to work. My question is if there's a ...
1
vote
1answer
46 views

Replacing root filesystem with EC2 snapshot

This documentation describes "Restoring an Amazon EBS Volume from a Snapshot". Having done that this documentation explains "Making an Amazon EBS Volume Available for Use on Linux" What I'd now ...
0
votes
1answer
38 views

network configuration after restoring a snapshot on newly created VPS instance

I have a website up and running on a VPS instance from Vultr running Ubuntu 18.04LTS, everything is fine. I wanted to try out a snapshot of the instance in a restore session just in case something bad ...
0
votes
1answer
118 views

Mongodb on AWS EC2 backup strategy

I'm running Mongodb on AWS EC2 instance. Data/log/and journal are stored in a separate volume, formatted as xfs. Currently we are stopping the mongodb instance to take a snapshot, but reading this: ...
0
votes
1answer
21 views

Why is my Syno NAS creating a snapshot each hour instead of one per day?

[Background information] I am running a Synology DS916+ consisting of 4 disks forming 2 storage pools. Storage pool 1 is made up of 3 disks holding all my data on a SHR (Syno Hybrid RAID). Storage ...
0
votes
0answers
133 views

I have configured Samba file server on Centos 7 but Previous version shadow copy not available for windows 7 client

I have configured Samba file server on Centos 7 and configured vfs objects = shadow_copy2 using LVM snapshot so that windows 7 client can access Previous version shadow copy same like MS windows.But I ...
5
votes
2answers
2k views

Is this btrfs snapshot removal performance normal?

I have several boxes running Debian 8, dovecot and btrfs. I'm using btrfs snapshots for short term backup. For this purpose I keep 14 snapshots of the mail subvolume. Performance is OK until it comes ...
0
votes
1answer
27 views

I can not snap a pair of LVMs associated with a KVM

I use a snaphost for backup my machines based on KVM But on one server I can`t make snapshots of one machine Get a error, I dont how to repair the problem. Using default stripesize 64.00 KiB. ...
2
votes
2answers
6k views

qemu-img snapshot on live VM

I have created multiple KVM VMs using QCOW2 images. Each VM has its own qcow2 file and is not based on any backing file. My question is specifically related to snapshots of QCow2 images on these ...
0
votes
1answer
121 views

Google Cloud VM Windows instance wallpaper Snapshot Time:

I am managing two VM instances in Google Cloud and have a question about the Snapshot Time: field. Where is this coming from and does it mean that an actual snapshot was taken? In both cases 'gcloud ...
1
vote
1answer
150 views

Google Cloud Platform: Physical snapshot storage location

This document says: Compute Engine stores multiple copies of each snapshot redundantly across multiple locations with automatic checksums to ensure the integrity of your data. I'm wondering about ...
2
votes
0answers
246 views

Hyper-V 2016 not merging on checkpoint delete, “Cannot locate parent virtual hard disk”

This is semi-consistent behavior. I set a checkpoint on my guest VMs when I update an application, and run it for a month or so until the next one is due. At least half the time, when I right-click ...
1
vote
1answer
289 views

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:...
0
votes
0answers
74 views

AWS KMS keys when copying snapshots

Background I've recently opened an Amazon Web Services account to run a small-business webserver. I launched an EC2 instance with an unencrypted volume, and now I want to encrypt that volume. A ...
0
votes
1answer
55 views

virsh error: domain is already quiesced

My VM backup script fails while creating the snapshot. virsh snapshot-create-as --domain machine_1 snap --diskspec vda,file=/srv/test/test-snap.qcow2 --disk-only --atomic --no-metadata --quiesce ...
1
vote
2answers
317 views

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 ...
0
votes
0answers
76 views

hyper-V - Production checkpoint doesn't work until I restart the service on the VM

My problem: Production snapshot on my VM doesn't work until I restart the Hyper-V volume shadow copy service (on the VM). Which is a problem because each time I apply a snapshot I should restart the ...
0
votes
0answers
41 views

Error running Zoopkeeper Snapshot Command

Navigated to the zookeeper folder Ran this command (I'm on Windows server) java -cp zookeeper-3.4.8.jar:lib/log4j-1.2.16.jar:lib/slf4j-log4j12-1.6.1.jar:lib/slf4j-api-1.6.1.jar org.apache.zookeeper....
0
votes
2answers
119 views

Snapshot google cloud

When I run this command, the first time it makes a full disk snapshot: gcloud compute disks snapshot mydisk1 –-zone=asia-east1-a but the next time it only save the modified data. Is it possible to ...
5
votes
2answers
23k views

Robocopy, do not overwrite existing files, but copy the changed / new ones

Is it possible to mirror the two directories without overwritting the files in destination directory with new/changed/deleted files. Something like snapshots. Example: Copy the source directory with ...
0
votes
0answers
26 views

LVM snapshots which are not marked as snapshot anymore

I'm running some VM backups using a script that I wrote on my Centos 6 and 7-based hypervisors. The virtual disks are stored as LVM volumes on shared ISCSI storage. The script performs basically these ...
27
votes
4answers
32k views

Why VM snapshots are affecting performance?

I read in one of the VMware KB articles that snapshots will directly affect VM performance. But my team keeps asking me how snapshots can affect performance. I would like to give them solid reason ...
0
votes
0answers
48 views

qemu error while restoring snapshot

I made a snapshot of a Windows 10 VM and now if I try to restore it with virt-manager or with this command virsh snapshot-revert win10 "bef kg" I get this error: error: internal error: qemu ...
0
votes
1answer
172 views

How can I see how long an EBS snapshot took?

I'm trying to do some planning and have been experimenting with EBS snapshots for data backups. I want to see how long a snapshot took of a 50G volume, but I only see the start time, not the ...
0
votes
1answer
284 views

LVM over RAID1 in XFS - is this a bad idea?

I came across a comment in this question which states that LVM over RAID or RAID over LVM is evil, and many people have up-voted the comment, so there must be some truth to it (I guess)! However, I ...
1
vote
2answers
51 views

How do I make a VMWare VM not be running on a snapshot?

I'm not sure I understand snapshots. I took a snapshot of a VM on ESXi. The Snapshot manager in VSPhere show the tree and at the bottom of that three is "You are here." It is underneath the ...
13
votes
4answers
14k views

How to keep or drop LVM snapshot?

I have made an LVM snapshop by lvcreate --name snap --size 10G -s /dev/vg00/vm What command should I write if I want to drop the snapshot, and not keep the changes that have happened since the ...
1
vote
1answer
403 views

Are EBS snapshots deleted when the volume itself is deleted?

I have a client who are 'upgrading' their OS but tearing down the entire instance, creating a new one based on the updated AMI and creating the setup including EBS volume. When they delete the EBS ...
3
votes
1answer
4k views

How to replace QEMU binary with newer version for libvirt live snapshots

This is my first post, so please be gentle. :) My CentOS 6.5 box has a QEMU binary that does not support live external snapshots. This is the command I attempt on the virsh CLI, and its output: ...