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

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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 ...
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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 ...
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1answer
372 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 ...
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3answers
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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. ...
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1answer
798 views

Strange log messages from LVM and server hang

On one of our OpenSUSE (11.3) virtualization servers we have had some stability problems recently. The server is pretty heavily loaded, with up to 100 virtual domains, all running on LVM snapshots. We ...
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3answers
318 views

LVM snapshot keeps changing file timestamps

I searched the web but did not find any info about this. I'm mounting an LVM snapshot and I notice the timestamps of the files there keep changing. I though LVM snapshot was a one time freeze in time ...
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1answer
457 views

LVM snapshot of linux 2.2 KVM guest

I have a KVM host running a linux 2.2 guest. The virtual disk for the guest is an LVM logical volume. This is seen by the guest as a real disk, so it's partitioned, has a boot sector, etc. Now my ...
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2answers
622 views

Question about Consolidate Helper - 0

Recently I had an issue where a virtual machine had ran out of space and was suspended, a restart was able to to fix the issue but when I SSH'd in I noticed there were two large files (both delta.vmdk ...
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1answer
183 views

LVM 2 snapshots and free blocks

LVM 2 snapshots works as COW. However the block may change even if it is not used anymore. As SSD disks may need marking of free/used blocks to better manage blocks, the API was introduced into Linux ...
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2answers
141 views

VirtualBox problem: cannot take snapshot

I have just setup a Lucid Lynx desktop machine. I have installed VirtualBox 3.2.6 on this machine to run several server. I have created a new Lucid Lynx server in one VM, the VM creation is fine but ...
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1answer
126 views

Problems with USB-Devices using VDR

I'm using VDR on vSphere4. It works sucessfully. I've already backuped several VMs with VDR and I like it very much. But now we got a problem. We have 2 VMs, using an USB-Device Server with a stick ...
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1answer
426 views

VirtualBox, physical disks, and snapshots

I have an Ubuntu guest installed on a raw HDD (entire disk, not a partition). It runs just fine under WinXP. In addition, I was able to boot directly into it (using the BIOS boot-device selector). At ...
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3answers
702 views

How to take snapshot of the filesystem in linux (files, their sizes only, not their data)

We need to take a snapshot of your linux server. We don't want to backup the data, just a snapshot we can compare against changes.
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2answers
3k views

VirtualBox Snapshot - How to stop them to grow and take more and more space?

I am using VirtualBox on Ubuntu with some programs installed in it. And the snapshot file does not stop to grow. I don't need this feature. I just want my data to be saved on the virtual windows hard ...
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2answers
496 views

CentOS and Snapshots

I'm planning on purchasing a virtual-dedicated server today and would like to pass a quick question by the community here before I do. I'm likely going to be getting CentOS, as that seems to be a ...
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2answers
1k views

Restoring snapshot for Microsoft Exchange server

The background: I need to do some testing with Microsoft exchange server. Specifically, I'll be installing some software on the Microsoft exchange server machine and uninstalling that same software ...
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2answers
538 views

In place SQL 2008 upgrade vs. Side by side?

I have a SQL 2005 Std edition server with 5 databases in production, 4 db's are used by web-based apps the 5th is a desktop application. My question is should I perform an in-place upgrade or a ...
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1answer
1k views

Make a snapshot of a live mySQL database with myISAM & innoDB tables without locking

We have a live database in production where we are running out of space on the server. So I would like to transfer to a new server without any downtime (or as little downtime as possible). In general, ...
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3answers
871 views

Immutable hard links on ext3/4?

In my research on file versioning at the fs level, snapshotting, and related ideas, I took a look at hard-links and exactly what they are and how they behave. Using rsync you can get a pretty slick ...
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2answers
215 views

Deploy virtual PC based on snapshot using Hyper-V

I have a server with Hyper-V configured, it is easy to create a new virtual machine using the management tools, but it can take some time. I often see those hosts that say "We can have your server ...
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2answers
537 views

SAN based Snapshots and Disaster Recovery

I wanted to know if anyone has has any expirience of using SAN based snapshots and replication between SANs for disaster recovery. My main worries are around databases and applications like Exchange ...
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2answers
489 views

VMware Server 2 Snapshots Crashing Ubuntu Guests

I have about 20+ Ubuntu Guests running on Vmware Server 2.0.2 and every night a backup script takes a snapshot of all running VMs, backs them up, then removes the snapshots. Every morning I check the ...
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6answers
11k views

How do I best archive VMWare VMs for reuse?

I'm using VMWare ESX 3.5. I've just created a couple of different-flavour VMs (a Windows 2008 one and a Windows 2003 one), installed windows updates, and am generally happy with their pristine ...
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1answer
213 views

is CBT used for snapshots?

1) Just wondering, is Change Block Tracking utilised for snapshots (ESX 4.x)? or is the mechanism the same as ESX 3.x 2) I know its used for SVM after reading a punching clouds article ...
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2answers
2k views

Schedule Recreate Snapshot and Reinitialize Subscriptions - SQL 2005

Monthly I have to generate a new snapshot for replication and reinitialize subscriptions in SQL 2005. I would really like to automate and schedule this, but I'm not having much luck discovering how. ...
2
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1answer
880 views

Unremovable invisible snapshot

We are running ESX 3.5.0 and are using VCB for making backups. Yesterday VCB failed to remove its snapshot. That has happened a couple of times before, and I removed it manually as usual. But this ...
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2answers
927 views

Live Xen snapshotting?

If I use xm save domain dumpfile, this pretty much accomplishes what I want to do. However, this does cause some downtime, and I really don't want to close network connections or take the machine out ...
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4answers
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How do snapshot backups work?

How are snapshot backups different from traditional backups? I know that snapshot backups take a minimum of time, but I don't understand how they can do this. Can anyone explain this to me?
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1answer
1k views

Virtual Machine Snapshot revert issue

After reverting to an older snapshot, Windows Server 2008 VM running on VMWare gives me the following error when I tried to login: The trust relationship between this workstation and primary ...
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2answers
208 views

SQL server 2005 Checkdb - no room for snapshot files

I have a 2Tb+ SAP database with 8 datafiles, the first files have grown to fill the available disk space on our HP EVA5000, and the growth is now on the new files. We upgraded SQL from SQL server 2000 ...
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1answer
163 views

Backups, JFS2 Snapshots and powerloss

I have recently been tasked with improving the backup strategy of a legacy server supporting 150 users via a terminal based interface. The issue is currently that the server has a single backup taken ...
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1answer
822 views

Create a SQL Server full backup without affecting maintenance plan?

We use a centralized SQL Server 2005 server for web development. The server has a maintenance plan to take a full backup each Sunday and incremental backups on all other nights. All databases use ...
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3answers
1k views

LVM and snapshots

I have a fileserver that I just setup lvm on. I have two LVM partitions /dev/fileserverLVM/home /dev/fileserverLVM/backup I'd like to take and store the snapshots in /dev/fileserverLVM/backup. The ...
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1answer
690 views

Speeding Up MSSQL Snapshot Replication to SQLExpress Replica

I have a well-connected remote site that I'm delivering snapshots to twice-daily of certain tables. Snapshot replication is the only method that I can use based on the schema limitations of the ...
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5answers
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What might cause a VMWare snapshot to timeout?

I'm using BackupExec and VCB to backup a few VMs. As I understand it, the pre-job script creates a snapshot of my VMs, mounts them as virtual directories on my backup server, and then my backup exec ...