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

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14
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5answers
15k views

How to delete all but last [n] ZFS snapshots?

I'm currently snapshotting my ZFS-based NAS nightly and weekly, a process that has saved my ass a few times. However, while the creation of the snapshot is automatic (from cron), the deletion of old ...
4
votes
2answers
2k views

Amazon EC2: Restoring Windows EBS snapshots into AMIs or Instances?

As my Windows EC2 instance lives, starting and stopping many times a week, it evolves. These changes get saved to it's EBS volume, so state is persistent across reboots. Now, periodically I backup ...
3
votes
2answers
480 views

open source backup system with user-driven recovery

At my old company we used NetApp, which supported a ".snapshot" feature. Whenever I did something stupid to my files, I could cd .snapshot and find hourly and nightly directories which contain ...
1
vote
2answers
220 views

Can You Specify Where LVM Snapshots Are (Initially) Stored?

Disclaimer: this is my first time using lvm. Upon RTFM, it appears that LVM snapshots are automatically stored in the same directory as the original logical volume. In my case, that would mean the /...
2
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2answers
2k views

Disable automatic snapshots on vmware server

Is there a way turn off the automatic snapshot feature in vmware server? (Or is that a bad idea for some reason?) We have the files on the machine backed up separately, so I don't see the need for ...
1
vote
2answers
444 views

Configuring high-availability with snapshots

I wanted to know if it is possible to configure HA in VMware vSphere to start virtual servers using snapshots. For example, if one of my physical server fails, the virtual machine would start on ...
1
vote
3answers
283 views

LVM snapshot missing /dev and /proc tree

I created a lvm snapshot like so: lvcreate -L 5G -s -n root-snapshot /dev/VolGroup00/LogVol00 Then I mounted the snapshot like so: mount /dev/VolGroup00/root-snapshot /mnt/root-snapshot/ Now, ...
0
votes
1answer
476 views

Netapp SMVI and SMSQL Backup strategies

Netapp VMWare Sql Server VM's using SMVI to backup OS and SMSQL to backup DB's Windows and generic data drive on one volume, SQL MDF's on another, SQL TempDB on another and SQL Logs and SMSQL SI on a ...
1
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1answer
1k views

How to take periodic snapshots of VMs and efficiently transport them off-site

I'm running KVM on Debian Squeeze and have VMs ranging from Debian to Windows Server 2003 to XP and W7 My plan is to move these VMs to qcow2 and use libvirt's snapshot-create to take periodic ...
1
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1answer
95 views

How to get the latest version of a disk from a snapshoted vmware virtual disk when I have only the disk files?

I have a virtual disk with one snapshot. I want to acces the latest data after the snapshot. One way would be to merge the delta into the disk. But the rest of the vm does not exist any more. How ...
1
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3answers
3k views

How do I fix a VMWare disk of a broken machine that has snapshots?

A guest on VMWare ESXi 4 is not booting anymore and I want to attach its disk to another machine. Both are almost identical ubuntu 64 bit server instances. But the broken machine had snapshots, so ...
3
votes
2answers
2k views

Can ESXi (4.1) mount a VMFS datastore alongside a read-only snapshot of it?

I have a ESXi (4.1) server talking with a Windows Server 2008 R2 storage server, which presents some volumes as iSCSI targets using Microsoft's iSCSI software target; ESXi uses them as its datastores. ...
1
vote
1answer
162 views

ZFS ACL's with Snapshots

Let's say I have a ZFS filesystem set up to share to users via CIFS, but ACLs are fine grained into the subfolders of the share to where certain users can't go into. Let's also say I'm leveraging ZFS ...
4
votes
3answers
320 views

Is there a reason(s) I should not create a datastore to house a single VM?

I was at a Dell EqualLogic training event and the speaker threw out the idea that it may not be a bad idea to create a single datastore to house a single VM rather than making a large datastore and ...
2
votes
1answer
1k views

kvm snapshot (libvirt)

Iam managing kvm by libvirt and using qcow2 file format. I can create snapshots of running wm with snapshot-create command, but if I transfer my qcow2 image to another host and define transfered host ...
7
votes
3answers
2k views

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 ...
1
vote
1answer
539 views

How to force commit a snapshot on vmware ESX virtual machine?

I have a virtual machine in ESX with snapshot; unfortunately when trying to commit the snapshots, vmware somehow lost track of the whole structure; the virtual machine got one week back, while on the ...
0
votes
1answer
1k views

Script to remove VMWare snapshots?

I'd like to centrally remove all non-active snapshots on a vMA host before performing central backups of VMs. I am hoping such a script exists already??? Anyone know of one? Edit: Here is a script ...
24
votes
4answers
7k views

LVM snapshots vs. file system snapshots

As far as I know, LVM makes it possible to take snapshots of a volume. There are also a number of file systems (ZFS, Btrfs, reiserfs, ...) which supports snapshots. However, I've never understood the ...
1
vote
0answers
3k 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 ...
1
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1answer
116 views

windows server creation from amazon ec2 snapshot

I created a windows 2003 instance on Amazon EC2, I created the snapshot for backup. Now I am creating the volume from that snapshot and try to attach to a new windows 2003 server. I am able to up ...
3
votes
2answers
6k views

Recovering a Hyper-V vhd from a snapshot

I'm going to leave out tons of related info that I hope isn't relevant to keep this lean - feel free to ask for detail. My host is a Windows Server 2008 Standard SP2 (not R2). Last February we had ...
1
vote
1answer
75 views

Merge Publication Data Partition Snapshot generation

I have a merge publication in SQL 2008 R2 with data partitions and I am wondering when I should generate the snapshots for the data partitions. I get an error sometimes when bringing a new subscribe ...
2
votes
3answers
206 views

Replication or?

Recently, we have been hammered by Google Bots and all kinds of other bots( 60% of the website traffic that we experience on an average are from Bots. We are trying to segment out the Google Bot ...
0
votes
1answer
1k views

What can go wrong with dmsetup suspend / resume?

I have a backup procedure for ec2 instances with lvm spanned volumes that does the following: 1) ssh to the box as root using an ssh forced command to dmsetup suspend the spanned volume. 2) take an ...
3
votes
5answers
1k views

Backup solution for 10TB using ubuntu

I am setting up a backup server with roughly ten 2TB hard drives raided. The purpose of this machine is simply to back up about 3-10TB of data from another server. What is the best way to achieve ...
3
votes
5answers
3k views

Handling XenServer snapshotting and cloning with ZFS SAN

I'm planning on setting up a XenServer machine that uses a NexentaOS/ZFS-based SAN for storage of the Virtual Disk Images (VDIs) through iSCSI. I know I could just setup a big Storage Repository (SR) ...
5
votes
2answers
4k views

After restoring a HyperV snapshot, I get “the trust relationship between this workstation and the primary domain failed”

I have a Windows Server 2008 R2 HyperV machine. I had to restore it to an old snapshot, and now I'm getting the following error when logging in through remote desktop using a domain ID: "the trust ...
2
votes
1answer
609 views

Virtualbox snapshot manager

I'm using Oracle Virtualbox from commandline to manage my VMs. I'm talking a daily snapshot of them in a cronjob. But after all I just want to keep the 7 newest snapshots. Is there a way I can do ...
1
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2answers
761 views

Using LVM Snapshot To Backup Database Servers

Could we use LVM snapshots to backup database servers? Or we can only use it for file system backups?
2
votes
2answers
1k views

Automatic ZFS Snapshots on Solaris 10

I'm trying to enable automatic ZFS snapshotting on a Solaris 10 server. From extensive googling, I've managed to understand that there are/were some automated services to do this, like: http://mij....
3
votes
2answers
3k views

How to export a specific virtualbox snapshot as a raw disk image

I created a Linux appliance for my friends. It's a small Ubuntu installation with Trac, lighthttp and ufw configured. I made it using VirtualBox. Now I want to export the latest snapshot version ...
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0answers
193 views

VMWare ESX4 snapshot failing with “file is larger than the maximum size supported”

I created my virtual machine hard drives with thin provisioning at the maximum of the block size (256gb for 1mb blocks) and then tried to snapshot them, failing with the error "file is larger than the ...
2
votes
4answers
3k views

where are kvm-snapshots stored?

I run several VM's on KVM/ubuntu, which all get started with the -snapshot parameter (the VM's only compute several things which can be destroyed after reboot). Out of the docs I've read, the changes ...
1
vote
2answers
769 views

Automate Amazon EBS Snapshot creation?

Once in a while I would go to http://aws.amazon.com/console and manually right click my EBS volume and create a snapshot. This is kind of tedious and I would forget sometimes. Is it possible to ...
1
vote
1answer
295 views

Synchronization of volume snapshots when doing whole system backups

Is there a way to guarantee consistency across volumes when doing backups from LVM snapshots? Consider this scenario: Some system upgrade is in progress. It will write some files to the /usr ...
3
votes
4answers
5k views

Hidden Periodic Screenshots on a corporate workstation?

Can anyone recommend something that allows us to take hidden periodic screenshots of a workstation? We have a user who we believe is abusing his computer privileges. We have our suspicions that he ...
1
vote
1answer
190 views

EC2 AMI, does it mean state or just the program files and OS?

I was wondering if creating an EC2 AMI backup, which means taking a snapshot would just save the OS, along with its settings or say, if a program were running and during that I take an EC2 AMI ...
3
votes
2answers
3k views

Are ZFS snapshots + S3 a viable backup system for several VMs and general fileserver storage?

I've been tasked with setting up a backup system for my small office (around 12 people). Most of our production stuff is on the AWS cloud, so what I need to back up are some small office/development ...
1
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2answers
2k views

Browse files inside a Hyper-V snapshot

If it possible to browse the inside of a snapshot file for a specific file? It is not possible for us to merge this particular snapshot file so we are looking for an alternative to recover a specific ...
0
votes
1answer
366 views

Does xfs_freeze suffice to snaphot MySQL db?

I am writing a script to snapshot EBS volumes on AWS. One of the volumes contains the data for a mysql database. I am aware that I need to somehow stop data being written to the database while the ...
1
vote
1answer
2k views

VMware ESXi 4.1 snapshot of server 2008R2 machine generates 2 indentical snapshots

I have 2 VMs that are failing to get veeam backups, and it appears that the culprit is vmware snapshots. We are running Vsphere ESXi 4.1 build 320092, we have multiple server 2008R2 machines that take ...
0
votes
1answer
131 views

What VM control panels support snapshots?

Which web based control panels provide snapshots? Please include free software and paid software < $1000. If you can, be specific as to if it supports: VMWare Xen Virtuozzzo OpenVZ Other ...
0
votes
1answer
207 views

Huge Server: Backing Up Many TB of Data with Instant Failover?

We have a very challenging system to back up: 1. We have 20 TB of data right now. 2. Each month we get another 3 TB of data, and about 5 TB of data changes each month. 3. We are currently a Windows-...
0
votes
2answers
377 views

Loading a snapshot on a live instance to replace the root volume without terminating or stopping

I have a small EC2 instance running Ubuntu 9.10. I cannot stop or terminate it because it's a production server and we cannot lose our IP. I have an Amazon EBS volume that is our root drive and I ...
4
votes
4answers
2k views

How to have ZFS make snapshots of a directory only when files are changed?

Is it possible to have ZFS make snapshots of a filesystem i.e. pool/filesystem/ only when files are changed? Instead of using cron or something to automatically create a snapshot every 5 minutes is it ...
1
vote
3answers
250 views

NAS solution for server image backups

We need at least 1TB of redundant storage for server image snapshots to be backed-up using shadow protect. What do you recommend for $1K or so budget? What else should I be considering for this ...
0
votes
2answers
2k views

Help finding ZFS .zfs/snapshots directory in OpenSolaris

My home directory in OpenSolaris 0906 is part of the zpool rpool. I can view the pool in zpool list. I can view the file system in zfs list. I can create snapshots. I can use zfs list and see a list ...
0
votes
2answers
1k views

What's a good backup system to use on ubuntu?

I'm running an internal network LAMP server on ubuntu 10.10. I have another ubuntu running on an older ppc g5 with a 640gb drive in it. I'd like to run some software on that G5 that does some snapshot ...
1
vote
1answer
399 views

Taking Hyper-V Snapshots to a Network Location

Is it possible to take snapshots in Hyper-V (on Windows Server 2008 R2) directly to a network location? I want to set the Snapshot Location under Settings on the VM to \server\c$\StoreVMsHere. We ...