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

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9
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3answers
227 views

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 ...
1
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1answer
58 views

ESXi alerts to consolidate but there were no snapshots taken

I recently came a cross a disk failure on our server and got the disk replaced. Due to this disk failure there were certain issues which raised and now its going up and down. What my problem is that, ...
1
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0answers
22 views

reclaim space from xen server

i found xencenter stotage => general tah display 1096.6 GB used of 1107.7 GB total (708.5 GB allocated) seen some space have been eaten and not release. the SMLog show that [13816] 2014-03-28 ...
0
votes
2answers
24 views

Windows Server 2003 activity monitoring and reporting

I have BackupExec 2012 attempting to backup a Windows Server 2003 VMWare instance. I often get unable to quiesce error: "The virtual machine may be too busy to quiesce to take the snapshot." I've ...
0
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1answer
34 views

How to exclude VHDX disk from snapshots on Hyper-v

(I'm using the built-in Hyper-V that comes with Windows Server 2012 R2) I want to play with my snapshots while I have a separate disk that would not be affected by those snapshots, thus I can store ...
0
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1answer
27 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
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1answer
22 views

How do I determine the actual size of a NetApp filer snapshot?

We have a volume serving up CIFS data, which seems to have a lot more snapshot data than the rest. I suspect that this is due to a higher rate of change, and that I could determine this using the snap ...
3
votes
2answers
95 views

LVM snapshot of btrfs volume changes mounted device

I have a btrf volume on top of LVM. Now I want to do a snapshot on the lvm level (NOT on the btrfs level). But every time I create the LVM snapshot, btrfs changes the mounted block device to the ...
1
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1answer
53 views

bad page map bug during snapshot

I ran the following command to create a snapshot volume. But the kernel received a bug and the kvm hypervisor stopped responding. Why is the error and how to fix it? lvcreate -L20G -s -n ...
13
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8answers
1k views

Do snapshots + RAID count as a good on-site backup solution?

The two main reasons I can think of for taking backups seems to be taken care of when I use both snapshots and RAID together with btrfs. (By RAID here, I mean RAID1 or 10) Accidental deletion of ...
0
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2answers
44 views

Scale-out distributed storage with snapshots

I'm aware there are many similar questions around, several with great answers. I still haven't quite found what I'm looking for though: a distributed, scale-out FS that supports snapshots. Gluster ...
1
vote
0answers
26 views

Change the logical volume

I am quite new this snapshot process. Let, I have three logical volumes as A, B, C. I worked on logical volume C. But accidentally when I restart the system, it goes to the snapshot A. How can I ...
0
votes
1answer
64 views

Detailed explanation of how virtual machine snapshots work

I would like to fully understand how virtual machine snapshots work. Although I have researched this subject I cannot seem to find a "high-level" overview of how snapshots work practically. My ...
1
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1answer
33 views

Snapshots - where are they running from?

I have an odd 'issue'. And I feel a little dumb asking. Just after Christmas, 2013, I added a cronjob on one of my EC2 instances to snapshot all of my EBS volumes that had a tag where backup=true, ...
3
votes
1answer
206 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: ...
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votes
1answer
51 views

Create centOS6 snapshots

How can I create snapshots of system (similar to what VM have) of a centOS 6 to a network location? That is I need to know what software/package should I use and maybe some ways to work with it.
3
votes
2answers
98 views

See progress of lvm --merge

Is there any way I can see the progress of a merge of my snapshot back to the origin? The only thing I know is that there is an ongoing merge because I can't create a new snapshot.
0
votes
0answers
18 views

Is there a way to script a snapshot for the purposes of application installation and package creation?

I know there are solutions that do this in the wild (and some are free) that perform difference based app packaging (hard drive based snapshots), but for some reason when I use them for those tough ...
0
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2answers
30 views

Snapshot Reporting via Email

I've got the current script that is supposed to log onto vsphere, get all snapshots that are over a week old, and email the results. Connect-ViServer server $weekOldSnapshots = ...
1
vote
1answer
95 views

What will be deleted when I delete snapshot?

Using ESXi 5.0, I had a disk which was converted from VHD to VMDK using Winimage which left me with a sparse VMDK. I tried to snapshot the VM after importing it which caused a problem. I believe I ...
0
votes
2answers
61 views

Can I re-attach my EBS while a snapshot is pending?

I have my database backed up to an EBS drive. My current backup method is 1) queue all writes (not important how) 2) kill database process 3) detach + umount ebs volume 4) take snapshot 5) ...
2
votes
2answers
55 views

ESXI Snapshots on a CentOS VM

On reverting back to a snapshot on one of my CentOS VM's the date is obviously set back to the original snapshot date. I was wondering if anyone knew of any other changes to the server (apart from ...
1
vote
1answer
90 views

Delete all snapshots over 30 days old

I'm currently using VMware 5.1 and looking for a method to keep snapshots that users create from becoming too old. Is there any tool inside of VMware that allows you to manage snapshots (or possibly a ...
0
votes
1answer
85 views

LVM2: How to copy snapshots?

I read What does an LVM2 Snapshot contain? and LVM Snapshot confusion. What I'm trying to figure out is if there is a way to create a copy of an LVM snapshot for use with different Xen VMs. I know ...
1
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1answer
86 views

Security of AWS automated backup via snapshots

I need to automate backup of a Linux AWS instance. I would like to do this via one of the many scripts available that rely on the API access of AWS to do snapshots of the underlying EBS volume. What ...
0
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0answers
49 views

Hyper-v takes a long time to create snapshots

I'm not sure when, but I've noticed as of recently, whenever I go to make a snapshot of certain machines, it hangs at 2% for a good while and then eventually finishes (fairly quickly, actually). I ...
0
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1answer
82 views

EC2 backup strategy, 2 EBS volumes

i've currently set up a Windows EC2 instance with MySQL installed on the root/C: drive, with the database files, logs, etc on another volume. Is it safe to use snapshots to back up the instance? My ...
0
votes
1answer
213 views

An LVM snapshot of an ext4 fs does not seem very clean

I create an LVM snapshot of a mounted ext4 fs: lvcreate -L 10GiB -s -n "root-snapshot" "/dev/myvgname/root" If I then run e2fsck on /dev/myvgname/root-snapshot, it says: e2fsck 1.42.5 ...
0
votes
1answer
138 views

Qcow2 backing image and overlay idea

I have 2 KVM servers running Windows Guests. I want to create a Qcow2 image with Windows 7 on it, install the base software needed, and then make that a backing image, read-only, with one qcow2 ...
0
votes
1answer
130 views

Mounting an LVM snapshot and converting file: is it safe?

I have KVM running and need to convert some qcow2 disk images from running guests into vmdk format. Is it safe to take an LVM snapshot of the logical volume that the qcow2 file resides on, mount it, ...
0
votes
1answer
145 views

Clone/Backup Strategy for VMs between ESXi and KVM requiring clones to run concurrently with original VMs

I am stuck on this problem and need help. ESXi Free version 5 and qemu-kvm/libvirtd version 0.10. I will put the TL;DR first since it captures the problem fairly well. TL;DR I have 2 VMs on a KVM ...
0
votes
1answer
316 views

Qcow2 converted to vmdk show as spare and can't be snapshot

As the title says, kvm disks that I converted and moved to ESXi are useless because I cannot use snapshots due to the fact that they are sparse disks. Does anyone have a resolution for this issue? ...
0
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0answers
45 views

virsh-snapshot delete behavior in libvirt

What happens to the data after performing a virsh-snapshot delete of the most current snapshot for a domain? Does it merge the data into the existing qcow2 file? Will any new data as of the snapshot ...
1
vote
1answer
153 views

Is it safe to delete this snapshot?

Building on a previous question I had asked re: a VM freezing at the end of the backup, one of the solutions Veeam has offered is to make sure that there are no other snapshots that exist of that vm. ...
0
votes
0answers
244 views

Virtual Machine cannot be used for any checkpoint actions, when VM is already in running state

I've got some Microsoft Hyper-V VMs that I manage via System Center 2012 Virtual Machine Manager. There's one VM that I am trying to create a new checkpoint for (it has 3 previous checkpoints ...
0
votes
2answers
129 views

ESX Free: Creating clones of VMs to run concurrently as a branch version

I have ESX free (most recent version 5.X) installed on a standalone server with an internal datastore in a RAID 5 setup. The VMs will be Windows mostly with some Linux and will be dedicated to ...
6
votes
2answers
219 views

VMWare/ESX Snapshots vs Libvirt snapshots vs LVM2 snapshots

In VMWare, when a snapshot is taken, my understanding is that it creates delta disks, and any writes that occur after the snapshot is created will be written to these new delta disk images, and not ...
0
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0answers
61 views

ESX: allowing users to snapshot VMs without vSphere Client Access

I am using ESX (latest free version 5.X) to host multiple VMs (mainly Windows with some Linux). Users will have control of these VMs and should be able to snapshot them, however I don't want to deal ...
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votes
1answer
87 views

best way to create lvm snapshot of / partition [closed]

I need to know the best way to implement the snapshot of root partition "/" on a kvm guest. What I have is as follows 1- /dev/vda ..... 10G free -- /dev/vda1 boot partition (ext - 83) -- ...
0
votes
1answer
68 views

Can i have 400 snapshots in Amazon Ec2 if they are incremental only

I want to know about snapshotting. Amazon says that they make Incremental backups Only charge for the data chnaged between snapshots Now my question is let us suppose the only data which change ...
2
votes
2answers
426 views

Server Backup Strategy for Amazon EC2

Where and how should I backup my EC2 / EBS based snapshots OUTSIDE of EC2? EC2 provides a great product with their EBS based snapshots. However it is also a high risk point that someone could ...
0
votes
0answers
27 views

EBS Snapshot backs up Instance - Is S3 also needed?

I have spent lots of hours reading about EBS & S3 backups. I believe this is the proper approach for our needs but I am not a SysAdmin. Setup: 1 EC2 Server w/ apache & database Over 250000 ...
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votes
1answer
46 views

Switching Applications server on different VM snapshot

I have a VMware VM running with a specific Application Server. Instead of creating a new VM for install a new application server, Is it a good practice creating a snapshot of old Application Server ...
7
votes
2answers
455 views

Does speed of ZFS snapshot rollback depend on number of files?

I have tested a 10Gbit connection between two hosts to be able to read a 10GB file from host1 and write it to host2 using netcat, where the speed was 410MB/s. When I ZFS send/receive again with ...
6
votes
2answers
430 views

What does zfs receive -F do?

When I read man zfs for zfs receive I see -F Force a rollback of the file system to the most recent snap- shot before performing the receive operation. If receiving an ...
-1
votes
1answer
171 views

Hyper-V Missing Virtual Server From Hyper-V Manager List

We are running Hyper-V on a Window 2008 server that doesn't have a desktop (only console login is provided). We access Hyper-V using Hyper-V Manager which connects to this host-server and it provides ...
0
votes
1answer
46 views

Is it possible to quiesce a snapshot of a running server on an Esxi and back it up to a remote network several times a day?

There's an outside consulting company claiming that they are taking a snapshot of our local servers which reside on a VMWare Esxi, 4 times a daily while our servers are running. This snapshot is then ...
2
votes
1answer
160 views

Multi-Generation Snapshots using Device Mapper (Linux)

LVM is an amazingly useful tool, however, it seems to still lack support for snapshotting a drive that is already a snapshot. I made a script to handle this automatically but ran into some troubles. ...
2
votes
2answers
873 views

Quickest way to merge snapshots in VirtualBox

I have vdi with quite a number of snapshots taken from it - say, 50 or 70 snapshots. I want to have one plain vdi with a current state. These snapshots take way too much disk space and are not needed ...
2
votes
3answers
78 views

vmware 5.1 Upgrading and Snapshots

I'm planning on upgrading my environment to vmware 5.1 soon and was wondering if anyone here might know anything regarding snapshots taken prior to the upgrade: Will I need to take a snap shot after ...