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

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Deleting a Hyper-V checkpoint restores unwanted state

I had hoped that applying and then deleting a CheckPoint would result in all changes since the CheckPoint being discarded, but unfortunately this has proved to not be the case. Here's what I did with ...
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hyper-v accidentally removed snapshot

I (very stupidly) moved a Hyper-V snapshot via Windows explorer and then, of course the VM server would not boot. I moved it back and then removed the snapshot via Hyper-V so there are no snapshots ...
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21 views

Will a Xen Server v5.5 Snaphot run on Xen Server v7.0

I have a Citrix Xen Server version 5.5 running with a few VM's. I want to upgrade the hardware (new hard disks) and also upgrade the OS to the new Citrix Xen Server v7.0. Can I just make a snaphot of ...
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63 views

Is it possible to clone a snapshot of a KVM vm?

I only find an option to clone the last state, but not the state of a snapshot. Is there a solution? I'm using virsh and virt-manager to manage the vm's. The Hypervisor is Ubuntu Server 16.04. The vm'...
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16 views

AWS Windows SQL EC2/EBS application consistent snapshot

Has anyone found a way to take a EBS snapshot for a Windows Server that maintains Application Consistency? In my case it's with SQL and I'd like to maintain SQL app consistency. Either via quiescing ...
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53 views

is it safe to create a snapshot of a volume of a running ec2 instance

I'm running a MongoDB Cluster on 3 Instances on AWS Each instance has 2 EBS attached to it - / [8GB] - /data [50GB] To backup a cluster MongoDB recommends to create a snapshot of the /data driver ...
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35 views

LVM difference between LV size and Cow-table size?

I created a snapshot: lvcreate -n Snapshot -L 512M -pr -s /dev/fedora_2016/home now with lvdisplay it says that LV size is 2GB and Cow-table size is 512MB. 1.What is the difference between LV size ...
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169 views

Can ZFS snapshots on a NAS (accessed via Windows Previous Versions) be made more flexible in regard to renaming files?

I have a NAS running on OpenSolaris/illumos/OmniOS with several shared ZFS file systems where autosnaps are active to preserve a history (keep 4 15-minute snaps, 24 hourly snaps, 7 daily snaps and so ...
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29 views

Copying snapshot to another machine

I currently have exported an OVA of certain systems so I have a complete backup. After certain changes were made ( additional users added to LDAP for example), I created a snapshot. Would I be able to ...
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25 views

Improving I/O rates for EBS snapshot backed volumes

I'm working with a system that takes a set of 42 rotating daily EBS snapshots of each of its numerous (40) volumes for disaster recovery purposes. EBS volumes are aggregated into a RAID volume. A set ...
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66 views

Amazon EC2 Snapshot corrupt

The snapshots for one of our AWS volumes are corrupt. We use these snapshots as backup, and in the past they have been a great help. (NB: This is not our only backup method!) A corrupt snapshot is ...
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67 views

Boot from VMware snapshot file after accidentally deleting related snapshots

I'll preface this with the obvious: I am dumb. I am currently working from home on some scheduled maintenance on a production server running on a vm -- a bitnami redmine/svn stack to be specific. I ...
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12 views

Creating a new libvirt VM based on existing snapshots

I have a libvirt/qemu-VM with multiple snapshots. (I can for example use virt-manager to see those snapshots.) Is there a way to clone this VM completely keeping all the snapshots? Is it otherwise ...
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437 views

Unable to revert snapshot: “the vendor of the processors in this machine is not the same”

Recently we moved to a new Intel-based ESXi 6.0 server from an older ESXi 5.5 AMD-based server, both with 64bit processors. We just copied the VMs folders from the old server to the new one, then ...
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60 views

Merge btrfs subvolumes of lxc container

Problem: I've made some snapshots of an lxc container in the past. When I tried to make one earlier using the command lxc-snapshot -n base -c commentfile it echo'd Container is not defined. I ran that ...
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26 views

XenServer 6.5 - VM from snapshot and SID

I have been reading up on the myths behind the need to change an SID for a cloned system and how a system never exposes his SID outside his own self (so there's no need for it). Previously i used to ...
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1answer
106 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 ...
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274 views

SCOM Rule - NTFS - Delayed Write Lost

I have just installed SCOM and it is monitoring a subset of the Windows servers that we have installed. There is one rule which is generating alerts which is giving me a little trouble: NTFS - ...
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16 views

Are changes since snapshots still stored as changelogs?

It's been four years. Is the accepted answer of this question about VMWare still accurate? In other words (in case for some reason that link ever breaks), is this still true? When you create a ...
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164 views

How Do I Remove Files Stored In a VMDK?

I am a developer, not an IT guy, but I am the one responsible for managing our servers currently. I have run into a problem... apparently our SQL backups are much bigger than I anticipated, and on ...
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1answer
17 views

BTRFS remove directory from snapshot

There is the: btrfs subvolume delete <subvolume> command for deleting snapshots, but is there any solution if you need to delete a single directory from 60 snapshots? Not possible with rm -...
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ZFS: very big files + compression + snapshots

I backup several virtual disks (total = around 4 Tb), with several weeks of retention time. I use 4 x 4 Tb disks in the computer dedicated to primary backup. The filesystem is ZFS RAIDZ2, so 8 Tb ...
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96 views

RHEL6.1 VM machines frozen when a quiesced snapshot is created for backup purpose

My RHEL 6.1 virtual machines running on ESXi hosts 5.1.0 get frozen when the backup procedure tries to get a quiesced snapshot. I have to reset the virtual machines from VMware console. The tool used ...
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551 views

VMware snapshot merge vs delete on “DELETE ALL”

A simple version of this question has been asked before (and links to VMware site for simple scenarios exist) - but this is a bit more complicated. I have 4 snapshot scenarios under VMware esxi 5.5: ...
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115 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 – ...
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177 views

AWS EC2 what is a reservation ID exactly and what does it represent?

I made a script that creates snapshots of our EC2 volumes. The script looks at which instances are running, which volumes are connected to those instances, and then creates snapshots for those volumes,...
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67 views

Use Lvm snapshot for a new (KVM) virtual machine

I need to migrate one CentOS5 (32bit) physical server to in a virtual machine. My idea is to take a snapshot of the LV and then import in kvm creating a new vm. Is this a good idea? More precisely, I ...
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52 views

AWS EC2: EBS snapshot without reboot in read only context it is safe (consistent)?

I have a Windows Server 2012 R2 EC2 instance on AWS platform, with 2 EBS volume attached, the first (C:) for Windows SO (root volume) and the second (D:) for static file storage served by http server. ...
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72 views

Scan only new files whit clamav [duplicate]

I have a cron script witch makes snapshots every day and scan the whole partition whit clamav. But if possible it would bee a better idea to scan only the modified files i think. The snapshot is ...
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1answer
66 views

LVM2: Can I change the LV size (not COW-table size) of a snapshot?

I'm curious if it is possible to create a snapshot of (e.g.) 10G volume, and then resize the snapshot to be 20G, along with the file-system within? Using lvresize or lvextend only alters the COW-...
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60 views

Centos LiveCD Buffer I/O error. How to increase snapshot size?

Now I have liveCD for CentOS receive many error with buffer i/o error . however when I do check -- dmsetup status live-rw: 0 2097152 snapshot 244712/1048576 968 the 1048576 is 1 Megabit bitmap ...
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305 views

snapshot script for vmware esxi host

I am searching for way to create scheduled snapshot creation script. With possibility to set retention days/ count. Maybe someone can share some example or say what are using to create auto snapshots ...
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14 views

Issues with 2008R2 Hyper-V Snapshot [Permission Issues]

We have an issue while taking snapshot of a VM machine hosted on Hyper-V host. The Hyper-V host is a Windows 2008R2 Sp1 Ent edition server and we have couple of VMs hosted on them. Whenever I try to ...
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57 views

Figure out the used space on the snapshot thin volume

I have the following lvm configuration. Hard Disk: /dev/sdb (Size 10 GB) VG: vg_root on /dev/sdb THIN_POOL thin_pool occupying the whole physical extent lvcreate -y --extents 100%free --thin vg_root/...
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130 views

Is there a way to force restore an ElasticSearch snapshot with “unsupported snapshot state”

I am trying to restore a snapshot, but there were problems in some indices when we took the snapshot. We didn't get any errors when getting the backup, so we deleted the previous instance, but when we ...
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1answer
278 views

Live Backup using Proxmox's snapshot-drive command

I have a KVM server(not on a proxmox node), my VPS is based on qcow2 format and I would like to do a live backup of the vms. I have understood there are two types of backup, Internal and External, I ...
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34 views

Qemu qmp snaphot-drive

what is the correct method to use qemu qmp snapshot-drive ? Is there any other way to create snapshot of qcow2 based VPS without using virsh snapshot-create ? They seem to corrupt the filesystem on ...
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SQL Server VSS writer interfering with VMWare snapshots

After changing to TSM for the VMWare backups, we've started experiencing an odd issue with our Snapshot backups. We take system drive snapshots as a backup solution for the machine states. All the ...
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1answer
149 views

“Reinstall” FreeBSD using ZFS snapshots

I am using a dedicated server, and unlike on VPS providers or VM machines, getting back to a clean state (untouched, after install) is quite a laborious thing to do (lots of clicking around in a web ...
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48 views

NAUbackup features + Snapshots

Does anybody know whether or not NAUbackup captures the memory of a vm, along with the disk, when it takes a snapshot? I'm running xenserver 6.5 on three blade servers and I setup NAUbackup to backup ...
2
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1answer
1k views

Delete “orphan” libvirt snapshot

I am trying to live-snapshot using KVM as per this procedure. I must have messed up at some point because I'm in a state I don't understand. My VM is called prod. It was created in file /srv/vm/prod....
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81 views

ZFS - zfs destroy snapshot during zfs send incremental

How does zfs handle destroying snapshots during an incremental send? Example: 2 servers using ZFS: zfshost1 [root@zfshost1~]# zfs list -t snapshot NAME zones/40e66d56-4ea8-11e5-885d-feff819cdc9f@...
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61 views

rsnapshot vs EC2 EBS Snapshot

Question What are the pros and cons of using rsnapshot [on a live drive] to a separate EBS volume vs using Amazon's EBS snapshot on a live drive? Background I just moved a small single server from ...
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1answer
129 views

How to create an AMI excluding all attached volumes for all instance within VPC using shell script

I have written script to find instance-id from VPC n create AMI of each instance-id : #!/bin/bash #Script to Automate AMI backup echo "----------------------------------\n `date` \n--------------...
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ec2 create-image will it backup attached ebs volumes?

$aws ec2 create-image --instance-id xxx --name yyy --description "zzzz" --no-reboot This created AMI image of EC2 instance but did not created extra attached volume's snapshot ! So is there any ...
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3k 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: ...
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252 views

VMware Sync Driver - fsfreeze - consistent snapshot

I'm looking for now quiet some time to the following answer, does the snapshot taken by VMWare with VMWare Tools installed with the Sync Driver are consistent on linux ? According to this article I ...
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1answer
33 views

AWS snapshots before O.S. updates

I've read over the AWS Snapshot docs, but still have a question: When taking a snapshot of an instance before doing yum updates to the O.S.: - I have to snapshot each mounted volume separately, even ...
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19 views

delete a snapshot created before LVM extension

I believe that snapshots and disk extensions are not friends, having said that... Is it safe to delete a VMWare snapshot created before adding a new virtual hdd to my LVM partition? What I mean is: ...
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494 views

After I clear a large number of Snapshots (approximately 1500), FreeNAS 9.3 Web GUI displays “An error occurred.” After two days

My FreeNAS 9.3 Web GUI crushed after I clear a large number of Snapshots (approximately 1500) And now, It only displays these words: An error occurred. Sorry, the page you are looking for is ...