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

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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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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 VPS n create AMI of each instance-id : #!/bin/bash #Script to Automate AMI backup echo "----------------------------------\n `date` ...
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35 views

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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35 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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18 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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2answers
25 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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11 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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64 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 ...
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29 views

Cannot remove snapshot Hyper-V Server 2008 R2

I am slowing going through and removing snapshots that for some inexplicable reason have been running since 2012!!!!!!! Most have been fine to delete and let the merge happen offline or at worst ...
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1answer
148 views

NetApp Backup Strategy - Snapshots to SnapMirrors to Tape?

In a previous question we discussed the pros and cons of relying exclusively on NetApp snapshots for backups. I now find myself in this situation as our aging legacy Symantec BackupExec tape server ...
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1answer
93 views

Restore “snapshot” of OS partition on physical Linux server to spare partition then boot - caveats?

We're planning to bring a new physical server online in the near future and as part of the disaster recovery / change management plan, I want to be able to easily roll back the operating system and ...
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30 views

MongoDB fsyncUnlock won't unlock occasionally on Windows

We have a MongoDB replica set installed on Windows servers, with a scheduled backup job. MongoDB is configured to use journaling. The job runs db.fsyncLock() via script on MongoDB (primary server), ...
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1answer
32 views

Restore an entire virtualized domain to earlier state?

We have set up a lab environment in our office to run various cybersecurity simulations. We are using ESXi 6.0 (VMWare) and we have a domain controller with 3 servers. I know that snapshotting domain ...
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1answer
42 views

AWS EC2 snapshots - how long should they be retained? [closed]

How long should daily EBS-backed EC2 snapshots be retained? We're using ec2-automate-backup to backup (daily) two EBS volumes - OS and data - pertaining to a web application. If I've understood, in ...
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1answer
38 views

NetApp - Snapshot Full

I am seeing a bunch of Snapshot Full warning events being generated recently from various volumes on our filers: A Warning event at 22 Jun 10:03 Alaskan Daylight Time on Snapshot ...
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1answer
209 views

Incredibly slow snapshot removal

I have an ESXi box with HP LeftHand storage exposed via iSCSI. I have a virtual machine with a 1TB disk, of which 800GB is consumed. The disk is thick provisioned on the LeftHand storage. A snapshot ...
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1answer
113 views

Is there anything I can do to speed up snapshot speeds?

I have 3 SSD EBS volumes mounted to my database server. The main data volume is 10TB, the journal volume is 1TB, and a 3rd volume is 100GB. When I take a snapshot of the 3 volumes, the 1TB journal ...
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2answers
84 views

Where are diskshadow snapshots stored?

I am evaluating DISKSHADOW utility to take MSSQL database snapshots. I use the below set context persistent set option rollbackrecover txfrecover set verbose on begin backup add volume d: alias ...
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1answer
326 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 ...
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2answers
102 views

Linux live hot backup snapshot

I have a VPS with linode and they have hot backup of running system. I have multiple times restored the image when I do something stupid or mess up some install etc How do they do live hot backup , ...
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2answers
41 views

during snapshot merging… are deleted transactions ignored?

If i take a snapshot in vmware/vbox for example and soon after i delete a 5GB file.. the snapshot delta file will grow +5GB with the deleted files content to allow it to be recovered by restoring the ...
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2answers
52 views

Azure Snapshot without losing IP

I have several VMs running, but sometimes i have to clone them to make a sandbox server on where i can run trials and procedures, the problem is that everytime i make an image the VM stops and reboots ...
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122 views

Backup / restoring a snapshot on Linode

I am trying to automate a process of creating an image/snapshot/backup (whatever it is called) of my disk at a certain point, and then restoring it back to that point later. So I am experimenting ...
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1answer
57 views

creating snapshot for mongodb

I am trying to create snapshot for mongodb on centos 6.6. root@ ~]# lvscan File descriptor 12 (pipe:[23409]) leaked on lvscan invocation. Parent PID 3579: /bin/bash File descriptor 13 ...
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1answer
37 views

Does btrfs share file parts across snapshots?

I know that modern filesystem snapshots take very little space until they start to diverge by changes in files. However, I have been unable to identify at which granularity btrfs manages the changes. ...
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106 views

RDS snapshot to mysqldump

We have accidentally deleted some of the data entries from the RDS db and came to know after 10 days, so to recover data from rds snapshots,we figured out these possible solutions Restore the db ...
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1answer
90 views

Revert libvirt external snapshot

Having some issues understanding how to revert snapshots on ubuntu 14.04 using KVM... Until now i have been using internal snapshots, however due to space issues (space not being re-allocated after ...
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1answer
44 views

libvirt external snapshots: snapshot chain linked through filenames or inodes

If I have the following chain (it was created using external snapshots through virsh): base.qcow2 --> snap1 --> snap2[current] Now if I copy "base.qcow2" to a remote location, del the original ...
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1answer
1k views

Shutting down machine while deleting large snapshot

On ESXi 5.1, i started deleting a snapshot some hours ago.. A big snapshot of about 800gb. the machine is an SQL Server. It is only at 34% on deleting. can i just shutdown the machine while ...
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252 views

Repairing OpsCenter rollups60 Results in Snapshot Errors

I am running a 6 node cluster using Apache Cassandra 2.1.2 with DataStax OpsCenter 5.0.2 from the AWS EC2 AMI "DataStax Auto-Clustering AMI 2.5.1-hvm" (DataStax Community AMI). When I try to run a ...
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2answers
311 views

Will a Veeam 8 Snapshot Backup be be unable to restore my non-quiescable file-based databases if someone is logged in to them at the time?

We have some very old file-based databases (multi-user, but not Server-based) that are running on some VMs on an VMWare ESXi. Setup HyperVisor The ESXi is running ESXi version 5.1.0 Virtual ...
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138 views

Mysql table doesnt exist error after trying run from lvm snapshot

I'm trying to set up mysql replication by making lvm snapshot of master datadir and copying it to slave. The procedure is quite simple, on master server I execute "FLUSH TABLES WITH READ LOCK" and on ...
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550 views

How are Dell Equallogic Snapshots different from a Clone as it relates to disk space consumption?

I have a volume that is 125GB in space. Each snapshot I have is 125GB, exactly. I thought snapshots only grabbed data that changed, using its pointers. If not what the difference between a snapshot ...
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101 views

lvm archive and backup files not purging

I do hourly backups doing snapshots, and every time I do it creates files in /etc/lvm/archive. But lvm doesn't appear to pay any attention to the "retain_days" parameter under "backup" in ...
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1k 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. ...
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106 views

LVM2 Thin pool transaction_id mismatch

I believe we trashed some LVM thinpool metadata while moving 2 volume groups to a different machine. We now trying to reactivate the volume groups on the original machine. The physical volumes, volume ...
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1answer
147 views

Git a Windows file system as an alternative to virtual machine snapshots

I am a software developer and I want to test several versions of my software, with different configuration files and different contents in the database (everything running on Windows). For example, I ...
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3answers
264 views

Long running VMWare snapshots are bad… but what about VMDKs on a ZFS\LVM snapshot?

The VMWare KB and multiple blogs state that long running snapshots are bad for both performance reasons and integrity. They have valid points. Granted this is not with ESXi but rather ...
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205 views

AWS RDS CLI: AccessDenied on CreateDBSnapshot

I want to use the AWS RDS command line tool to create a snapshot of my database my-database using create-db-snapshot. I have created a special backup role in IAM with a policy that allows me to ...
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140 views

How do I enable backup(snapshot) on redis elasticache t2.medium

I was able to create a snapshots of my m1.small caches but the backup button is disabled when I select my t2.medium. Is there a way for me to enable backup of a t2.medium redis elasticache?
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96 views

Snapshot of BTRFS Device on top of luks Volume

I have the following problem: I can't figure out, how to create a snapshot of a btrfs volume residing on a crypted disk. This is the setup: /dev/sdb is a 1TB USB 3 disk. it has a partition ...
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1answer
124 views

VMWare: Are long running snapshots really THAT bad?

This is ESXi 5.5. I know that the VMWare KB is very against long running snapshots, however I do not know of another way to do this. Let's say I have a base Linux system and want to spin up a unique ...
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1answer
74 views

Best practice for VMWare Snapshots for lab VMs

I am setting up test\dev machines in VMWare. We have about six users that I would like to give a VM to. They are all going to be based off a single base image (Ubuntu). I could always create six ...
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1answer
152 views

Can't delete a btrfs snapshot

I have a system that creates periodic btrfs snapshots and deletes old ones. Today, I've started receiving warnings that the system can't delete some old snapshots. This is the output I get: ...
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1answer
29 views

Removing snapshot after removing guest hard disc

I have a server with ESXi 5.5 installed. I recently wanted to add a new hard disk to one of the guests. After adding the virtual disk to it, I took a snapshot just to be sure that nothing would go ...
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369 views

How to incrementally backup XenServer VMs [closed]

I am looking for a way to backup XenServer (or XAPI) VMs incrementally. backup just changed data every time. without performance penalty, slowing down the server after the backup is done (snapshots ...
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245 views

Windows 2012R2 as RDSH and rollback to clean state

I am in the process of installing a new Windows 2012R2 server in Remote Desktop Session Host mode that will work as a "terminal server" inside a classroom. The idea then is that after the server is ...
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224 views

How to create a snapshot volume to a remote server using kvm?

I want to backup a few virtual machines to a backup server. Here're the backup steps. suspend a virtual machine create a snapshot of the virtual machine using lvcreate -s resume a virtual machine dd ...
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Determine what has changed a specific key on Windows registry [closed]

History : My C drive disappeared from "Computer" on my Win7. After fixing it a couple of days ago by changing a registry key, I notice today that my C drive has disappeared AGAIN. ...
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2answers
3k views

How to delete a btrfs snapshot?

I'm new to btrfs and I am trying to delete some snapshots I made a few months ago. They're taking up about 20GB of space, and I need that space back. This seems to list the snapshots: ↪ sudo btrfs ...