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Questions tagged [snapshot]

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

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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 ...
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1answer
836 views

ZFS test rollback doesn't work as expected

I am confused about how ZFS snapshots and rollback are supposed to work. I have a zpool containing a couple zvols (each made from partitions of a mirrorvdev). I make a snapshot like this: ~$ sudo zfs ...
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2answers
10k 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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1answer
38 views

AWS AMI from Snapshot - Unable to Create Instance of Same Type

I've scoured Google and the AWS developer forums pretty thoroughly (I think) and can't seem to find an answer. I'm snapshotting EBS volumes with boto3 daily for DR purposes. Some of the instances ...
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16 views

Evidences for VMWare Snapshot restoration from Guest OS

I have few VMWare servers managed by an external company and I suspect a snapshot restoration happened on one of my server (MS Windows 2008 Server). I suspected this because there was a windows ...
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2answers
2k 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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3answers
33 views

Clone AWS instance and volume and apply new network settings

I have a machine instance and attached volume that I would like to clone, but apply new network settings to it. What is the best process for doing this, which will leave the original instance ...
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1answer
22 views

How to save scheduled XenServer VM backups to external drive

Server: XenServer 7.1 Management: XenCenter Goal: Have a Scheduled Snapshot saved to an external drive connected to the server via USB Issue: The server recognizes the external drive as a removable ...
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1answer
45 views

Is using snapshots in AWS a reliable way to back up data?

I am looking at backup options within AWS and while instance snapshots are the obvious way to go I am have some concerns about using that method. I'd like to take daily snapshots of each instance ...
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21 views

How do I resolve a Xen VM import that never completes but doesn't time out or print any errors?

I have several XenServers which backup their VMs to NFS storage by taking a snapshot and then exporting it to an .ova file. This is done using the script from here: https://tecadmin.net/backup-running-...
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0answers
29 views

Is there a way to make VM snapshots in PROXMOX LVM storage

Acording to official docs https://pve.proxmox.com/wiki/Storage:_LVM the LVM storage option does not support VM snapshots. You need to setup Thin LVM for snapshots to work. My question is if there's a ...
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1answer
45 views

Replacing root filesystem with EC2 snapshot

This documentation describes "Restoring an Amazon EBS Volume from a Snapshot". Having done that this documentation explains "Making an Amazon EBS Volume Available for Use on Linux" What I'd now ...
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1answer
28 views

network configuration after restoring a snapshot on newly created VPS instance

I have a website up and running on a VPS instance from Vultr running Ubuntu 18.04LTS, everything is fine. I wanted to try out a snapshot of the instance in a restore session just in case something bad ...
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1answer
78 views

Mongodb on AWS EC2 backup strategy

I'm running Mongodb on AWS EC2 instance. Data/log/and journal are stored in a separate volume, formatted as xfs. Currently we are stopping the mongodb instance to take a snapshot, but reading this: ...
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1answer
21 views

Why is my Syno NAS creating a snapshot each hour instead of one per day?

[Background information] I am running a Synology DS916+ consisting of 4 disks forming 2 storage pools. Storage pool 1 is made up of 3 disks holding all my data on a SHR (Syno Hybrid RAID). Storage ...
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0answers
84 views

I have configured Samba file server on Centos 7 but Previous version shadow copy not available for windows 7 client

I have configured Samba file server on Centos 7 and configured vfs objects = shadow_copy2 using LVM snapshot so that windows 7 client can access Previous version shadow copy same like MS windows.But I ...
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2answers
2k 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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1answer
26 views

I can not snap a pair of LVMs associated with a KVM

I use a snaphost for backup my machines based on KVM But on one server I can`t make snapshots of one machine Get a error, I dont how to repair the problem. Using default stripesize 64.00 KiB. ...
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2answers
6k 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 ...
0
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1answer
111 views

Google Cloud VM Windows instance wallpaper Snapshot Time:

I am managing two VM instances in Google Cloud and have a question about the Snapshot Time: field. Where is this coming from and does it mean that an actual snapshot was taken? In both cases 'gcloud ...
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1answer
101 views

Google Cloud Platform: Physical snapshot storage location

This document says: Compute Engine stores multiple copies of each snapshot redundantly across multiple locations with automatic checksums to ensure the integrity of your data. I'm wondering about ...
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0answers
162 views

Hyper-V 2016 not merging on checkpoint delete, “Cannot locate parent virtual hard disk”

This is semi-consistent behavior. I set a checkpoint on my guest VMs when I update an application, and run it for a month or so until the next one is due. At least half the time, when I right-click ...
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1answer
178 views

RDS snapshot: how long does I/O suspension occur?

As we're relying on RDS Postgresql manual backup for our backup strategy, we encountered the issue with the possible downtime of the RDS instance (single AZ) during snapshot creation. According to AWS:...
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0answers
49 views

AWS KMS keys when copying snapshots

Background I've recently opened an Amazon Web Services account to run a small-business webserver. I launched an EC2 instance with an unencrypted volume, and now I want to encrypt that volume. A ...
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1answer
44 views

virsh error: domain is already quiesced

My VM backup script fails while creating the snapshot. virsh snapshot-create-as --domain machine_1 snap --diskspec vda,file=/srv/test/test-snap.qcow2 --disk-only --atomic --no-metadata --quiesce ...
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2answers
191 views

How to know the snapshot completion time in AWS EC2?

I started a snapshot of 1TB volume that carries 750GB of data in AWS EC2 without shutting the instance down. It gave completed status, progress 100% when I noted after 10hrs. I can see the started ...
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0answers
38 views

hyper-V - Production checkpoint doesn't work until I restart the service on the VM

My problem: Production snapshot on my VM doesn't work until I restart the Hyper-V volume shadow copy service (on the VM). Which is a problem because each time I apply a snapshot I should restart the ...
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0answers
27 views

Error running Zoopkeeper Snapshot Command

Navigated to the zookeeper folder Ran this command (I'm on Windows server) java -cp zookeeper-3.4.8.jar:lib/log4j-1.2.16.jar:lib/slf4j-log4j12-1.6.1.jar:lib/slf4j-api-1.6.1.jar org.apache.zookeeper....
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2answers
110 views

Snapshot google cloud

When I run this command, the first time it makes a full disk snapshot: gcloud compute disks snapshot mydisk1 –-zone=asia-east1-a but the next time it only save the modified data. Is it possible to ...
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2answers
23k views

Robocopy, do not overwrite existing files, but copy the changed / new ones

Is it possible to mirror the two directories without overwritting the files in destination directory with new/changed/deleted files. Something like snapshots. Example: Copy the source directory with ...
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0answers
26 views

LVM snapshots which are not marked as snapshot anymore

I'm running some VM backups using a script that I wrote on my Centos 6 and 7-based hypervisors. The virtual disks are stored as LVM volumes on shared ISCSI storage. The script performs basically these ...
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4answers
31k views

Why VM snapshots are affecting performance?

I read in one of the VMware KB articles that snapshots will directly affect VM performance. But my team keeps asking me how snapshots can affect performance. I would like to give them solid reason ...
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0answers
36 views

qemu error while restoring snapshot

I made a snapshot of a Windows 10 VM and now if I try to restore it with virt-manager or with this command virsh snapshot-revert win10 "bef kg" I get this error: error: internal error: qemu ...
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1answer
129 views

How can I see how long an EBS snapshot took?

I'm trying to do some planning and have been experimenting with EBS snapshots for data backups. I want to see how long a snapshot took of a 50G volume, but I only see the start time, not the ...
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1answer
191 views

LVM over RAID1 in XFS - is this a bad idea?

I came across a comment in this question which states that LVM over RAID or RAID over LVM is evil, and many people have up-voted the comment, so there must be some truth to it (I guess)! However, I ...
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2answers
49 views

How do I make a VMWare VM not be running on a snapshot?

I'm not sure I understand snapshots. I took a snapshot of a VM on ESXi. The Snapshot manager in VSPhere show the tree and at the bottom of that three is "You are here." It is underneath the ...
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4answers
14k views

How to keep or drop LVM snapshot?

I have made an LVM snapshop by lvcreate --name snap --size 10G -s /dev/vg00/vm What command should I write if I want to drop the snapshot, and not keep the changes that have happened since the ...
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0answers
203 views

How can I restore an LVM snapshot without deleting the snapshot?

Steps to reproduce create a snapshot of a volume using lvm lvcreate -L 200GB -s -n snapshotname /dev/hostname-vg/root make changes to the filesystem restore the filesystem to the state it was in ...
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13answers
14k views

Best compression for ZFS send/recv

I'm sending incremental ZFS snapshots over a point-to-point T1 line and we're to a point where a day's worth of snapshots can barely make it over the wire before the next backup starts. Our send/recv ...
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1answer
249 views

Are EBS snapshots deleted when the volume itself is deleted?

I have a client who are 'upgrading' their OS but tearing down the entire instance, creating a new one based on the updated AMI and creating the setup including EBS volume. When they delete the EBS ...
3
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1answer
4k 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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1answer
133 views

How to image a GCE instance with multiple persistent disks

I'm looking for a way to snapshot/image a Google Cloud instance that uses multiple disks. From what I've found so far, this does not seem to be supported, as I haven't seen a way to create an image ...
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0answers
181 views

Libvirt snapshots - How to ignore a physical drive?

I have a libvirt guest that has 2 drives: QCOW2 image RAW access to a whole physical drive. From time to time I wish to take a snapshot of the QCOW2 image so I could easily revert if I chose to, ...
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2answers
246 views

AWS EBS snapshot. Does FileSystem consistency REALLY required?

I've been reading a lot about aws ebs and a lot of people seems to encourage people to freeze the filesystem during the snapshot. However, this piece of amazon documentation beg to differ : While ...
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0answers
245 views

How can I know who created this VMware snapshot?

Someone made a snapshot of a production VM (vSphere 5.1) a month ago. The snapshot is still there. Apparently this person doesn't know that snapshots are not backup operation... I would like to find ...
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1answer
437 views

Can a big VMware snapshot be deleted this way?

I heard that if you have a big snapshot to delete (keep the modifications) you should take a small snapshot again and then "delete all" so that the consolidation takes place in background. Is it a ...
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2answers
114 views

Backup all from my E-commerce (Magento)

I have a VM instances located on Google Cloud Compute Engine custom (6 vCPUs, 32 GB memory)Intel Sandy Bridge which use Debian. It's an E-commerce on Magento 1.9.3 If I want to create a full backup of ...
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1answer
379 views

How does “Add Snapshot” work in the Azure Pricing Calculator?

In the Azure Pricing Calculator, under Managed OS Disks, there is a switch you can flip to "Add Snapshot", which lets you choose the size of the snapshot. This doesn't make sense to me, because I ...
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6answers
29k 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 ...
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1answer
43 views

How to backup all the information from my E-commerce located in Google Cloud?

I'm new using Google Cloud but we have an E-commerce (Magento) located in one of our VM instances. I was reading about Snapshots. My question is Snapshots create a backup of all data from my store? ...