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

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is it safe to create a snapshot of a volume of a running ec2 instance

I'm running a MongoDB Cluster on 3 Instances on AWS Each instance has 2 EBS attached to it - / [8GB] - /data [50GB] To backup a cluster MongoDB recommends to create a snapshot of the /data driver ...
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3answers
7k views

VMware Workstation Error: Cannot find a valid peer process

I am running VMware Workstation 6.1.5 (build-126130) on CentOS 5.3 (Final). One of the guest machines is reporting an error when I try to power on the most recent snapshot. Snapshots further back in ...
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18 views

ESXI VM Snapshot Automation

Currently I'm writing some documentation for a client who is running multiple outdated VM's of ESXI 4.1.0 and it's slowing performance on the server due to the snapshots sizes increasing, its also ...
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19 views

LVM difference between LV size and Cow-table size?

I created a snapshot: lvcreate -n Snapshot -L 512M -pr -s /dev/fedora_2016/home now with lvdisplay it says that LV size is 2GB and Cow-table size is 512MB. 1.What is the difference between LV size ...
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1answer
2k 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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0answers
341 views

How to Reclaim Space from XenServer?

I found that the XenCenter storage tab claims there is 1096.6 GB used of 1107.7 GB total (708.5 GB allocated). It appears that some space has been eaten and not released. The SMLog shows: [13816] ...
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1answer
155 views

Can ZFS snapshots on a NAS (accessed via Windows Previous Versions) be made more flexible in regard to renaming files?

I have a NAS running on OpenSolaris/illumos/OmniOS with several shared ZFS file systems where autosnaps are active to preserve a history (keep 4 15-minute snaps, 24 hourly snaps, 7 daily snaps and so ...
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1answer
213 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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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 ...
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1answer
27 views

Copying snapshot to another machine

I currently have exported an OVA of certain systems so I have a complete backup. After certain changes were made ( additional users added to LDAP for example), I created a snapshot. Would I be able to ...
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1answer
20 views

Improving I/O rates for EBS snapshot backed volumes

I'm working with a system that takes a set of 42 rotating daily EBS snapshots of each of its numerous (40) volumes for disaster recovery purposes. EBS volumes are aggregated into a RAID volume. A set ...
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1answer
35 views

Amazon EC2 Snapshot corrupt

The snapshots for one of our AWS volumes are corrupt. We use these snapshots as backup, and in the past they have been a great help. (NB: This is not our only backup method!) A corrupt snapshot is ...
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1answer
51 views

Boot from VMware snapshot file after accidentally deleting related snapshots

I'll preface this with the obvious: I am dumb. I am currently working from home on some scheduled maintenance on a production server running on a vm -- a bitnami redmine/svn stack to be specific. I ...
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0answers
67 views

RHEL6.1 VM machines frozen when a quiesced snapshot is created for backup purpose

My RHEL 6.1 virtual machines running on ESXi hosts 5.1.0 get frozen when the backup procedure tries to get a quiesced snapshot. I have to reset the virtual machines from VMware console. The tool used ...
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12 views

Creating a new libvirt VM based on existing snapshots

I have a libvirt/qemu-VM with multiple snapshots. (I can for example use virt-manager to see those snapshots.) Is there a way to clone this VM completely keeping all the snapshots? Is it otherwise ...
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3answers
418 views

Unable to revert snapshot: “the vendor of the processors in this machine is not the same”

Recently we moved to a new Intel-based ESXi 6.0 server from an older ESXi 5.5 AMD-based server, both with 64bit processors. We just copied the VMs folders from the old server to the new one, then ...
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0answers
34 views

Merge btrfs subvolumes of lxc container

Problem: I've made some snapshots of an lxc container in the past. When I tried to make one earlier using the command lxc-snapshot -n base -c commentfile it echo'd Container is not defined. I ran that ...
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4answers
31k views

Is this how LVM snapshots work?

I'm trying to figure out how LVM snapshots work so I can implement it on my fileserver but I'm having difficulty finding anything on google that explains how it works, instead of how to use it for a ...
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1answer
68 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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0answers
23 views

XenServer 6.5 - VM from snapshot and SID

I have been reading up on the myths behind the need to change an SID for a cloned system and how a system never exposes his SID outside his own self (so there's no need for it). Previously i used to ...
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2answers
124 views

SCOM Rule - NTFS - Delayed Write Lost

I have just installed SCOM and it is monitoring a subset of the Windows servers that we have installed. There is one rule which is generating alerts which is giving me a little trouble: NTFS - ...
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2answers
76 views

How Do I Remove Files Stored In a VMDK?

I am a developer, not an IT guy, but I am the one responsible for managing our servers currently. I have run into a problem... apparently our SQL backups are much bigger than I anticipated, and on ...
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15 views

Are changes since snapshots still stored as changelogs?

It's been four years. Is the accepted answer of this question about VMWare still accurate? In other words (in case for some reason that link ever breaks), is this still true? When you create a ...
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1answer
14 views

BTRFS remove directory from snapshot

There is the: btrfs subvolume delete <subvolume> command for deleting snapshots, but is there any solution if you need to delete a single directory from 60 snapshots? Not possible with rm ...
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2answers
63 views

ZFS: very big files + compression + snapshots

I backup several virtual disks (total = around 4 Tb), with several weeks of retention time. I use 4 x 4 Tb disks in the computer dedicated to primary backup. The filesystem is ZFS RAIDZ2, so 8 Tb ...
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1answer
243 views

Live Backup using Proxmox's snapshot-drive command

I have a KVM server(not on a proxmox node), my VPS is based on qcow2 format and I would like to do a live backup of the vms. I have understood there are two types of backup, Internal and External, I ...
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1answer
522 views

VMware snapshot merge vs delete on “DELETE ALL”

A simple version of this question has been asked before (and links to VMware site for simple scenarios exist) - but this is a bit more complicated. I have 4 snapshot scenarios under VMware esxi 5.5: ...
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2answers
61 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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2answers
108 views

AWS EC2 what is a reservation ID exactly and what does it represent?

I made a script that creates snapshots of our EC2 volumes. The script looks at which instances are running, which volumes are connected to those instances, and then creates snapshots for those ...
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1answer
53 views

Use Lvm snapshot for a new (KVM) virtual machine

I need to migrate one CentOS5 (32bit) physical server to in a virtual machine. My idea is to take a snapshot of the LV and then import in kvm creating a new vm. Is this a good idea? More precisely, I ...
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1answer
44 views

AWS EC2: EBS snapshot without reboot in read only context it is safe (consistent)?

I have a Windows Server 2012 R2 EC2 instance on AWS platform, with 2 EBS volume attached, the first (C:) for Windows SO (root volume) and the second (D:) for static file storage served by http server. ...
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Scan only new files whit clamav [duplicate]

I have a cron script witch makes snapshots every day and scan the whole partition whit clamav. But if possible it would bee a better idea to scan only the modified files i think. The snapshot is ...
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1answer
51 views

LVM2: Can I change the LV size (not COW-table size) of a snapshot?

I'm curious if it is possible to create a snapshot of (e.g.) 10G volume, and then resize the snapshot to be 20G, along with the file-system within? Using lvresize or lvextend only alters the ...
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46 views

Centos LiveCD Buffer I/O error. How to increase snapshot size?

Now I have liveCD for CentOS receive many error with buffer i/o error . however when I do check -- dmsetup status live-rw: 0 2097152 snapshot 244712/1048576 968 the 1048576 is 1 Megabit bitmap ...
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1answer
204 views

snapshot script for vmware esxi host

I am searching for way to create scheduled snapshot creation script. With possibility to set retention days/ count. Maybe someone can share some example or say what are using to create auto snapshots ...
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3answers
4k views

Proper way of handling LXC containers on btrfs

Lets say we have one server with lxc installed, and a lxc container used for as a base img /var/lib/lxc/ubuntu_base. For simplicity let's forget the config changes after copying the base img. some ...
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0answers
10 views

Issues with 2008R2 Hyper-V Snapshot [Permission Issues]

We have an issue while taking snapshot of a VM machine hosted on Hyper-V host. The Hyper-V host is a Windows 2008R2 Sp1 Ent edition server and we have couple of VMs hosted on them. Whenever I try to ...
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44 views

Figure out the used space on the snapshot thin volume

I have the following lvm configuration. Hard Disk: /dev/sdb (Size 10 GB) VG: vg_root on /dev/sdb THIN_POOL thin_pool occupying the whole physical extent lvcreate -y --extents 100%free --thin ...
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117 views

Is there a way to force restore an ElasticSearch snapshot with “unsupported snapshot state”

I am trying to restore a snapshot, but there were problems in some indices when we took the snapshot. We didn't get any errors when getting the backup, so we deleted the previous instance, but when we ...
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1answer
28 views

Qemu qmp snaphot-drive

what is the correct method to use qemu qmp snapshot-drive ? Is there any other way to create snapshot of qcow2 based VPS without using virsh snapshot-create ? They seem to corrupt the filesystem on ...
0
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1answer
106 views

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

SQL Server VSS writer interfering with VMWare snapshots

After changing to TSM for the VMWare backups, we've started experiencing an odd issue with our Snapshot backups. We take system drive snapshots as a backup solution for the machine states. All the ...
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12answers
9k 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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0answers
211 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 ...
1
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1answer
122 views

“Reinstall” FreeBSD using ZFS snapshots

I am using a dedicated server, and unlike on VPS providers or VM machines, getting back to a clean state (untouched, after install) is quite a laborious thing to do (lots of clicking around in a web ...
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2answers
81 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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44 views

NAUbackup features + Snapshots

Does anybody know whether or not NAUbackup captures the memory of a vm, along with the disk, when it takes a snapshot? I'm running xenserver 6.5 on three blade servers and I setup NAUbackup to backup ...
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1answer
974 views

Delete “orphan” libvirt snapshot

I am trying to live-snapshot using KVM as per this procedure. I must have messed up at some point because I'm in a state I don't understand. My VM is called prod. It was created in file ...
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2answers
376 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 ...
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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 ...