Questions tagged [snapshot]

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

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VMWare old snapshot consolidation

I have been tasked to manage an old VMWare 4.0.1 installation, which is due to be replaced in the near future but it must be kept running at the moment. I immediately noticed that some virtual ...
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AWS EC2 snapshot reaches IOPS limit occasionally

For an EC2 server I have running I am creating a snapshot of the EBS every night. The EBS has 500GB of space and 1500 / 3000 IOPS. On some days past week the snapshot creating process reached it ...
Bart Bergmans's user avatar
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What is the best practice taking a snapshot VMWare

Is there a difference between taking a snapshot of a VMWare Windows server with it powered on and it being powered down. I have always took a snapshot for quick changes and reverting back to the ...
user401029's user avatar
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Gcloud transfer snapshots to nearline storage

I've setup my servers in google cloud to take regular snapshots. This is working fine, but I would like to move the snapshots to nearline storage because there's a big difference in pricing: For ...
Albert's user avatar
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LVM - Reducing COW size down to maximum usable size

I am doing snapshots on an LVM Volume. It works, but since a few minutes I do get a warning message. The command is: sudo lvcreate -s /dev/$VG/$LV -n $SNAP_NAME $VS 2>>$LOG The VG has enough ...
merlin's user avatar
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Why NetApp snapshot spill happen?

I am confused about what Snapshot Copy Reserve actually stores. From what I understand, a snapshot copy is a copy of pointers which points to blocks on disk which were occupied by a file at some point ...
Alex's user avatar
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Pruning ZFS snapshot contents -- impossible?

I have a problem in a server that has several dozen snapshots of a ZFS fileset. Back in November we received files that turned out to be for another organization. The content of the files is very ...
Juan Jimenez's user avatar
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Domain Controller Hyper-V Snapshot usage

I have read a lot about how bad domain controller snaphots are due to possible inconsistencies being created. They all seem to be only related to the case of having multiple DCs, like you have in a ...
Andreas Reiff's user avatar
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3 answers
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VMware Snapshot Longer than 3 days

Referring to this article https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1025279 I know it is not good practice to keep a snapshot longer than ...
Anthony Fornito's user avatar
2 votes
1 answer
165 views

Deleting Xenserver Virtual Machine used for Template

I created a custom Windows VM in Xenserver 6.5. I took a snapshot and used the snapshot to create a template that can be used for future reference. Is it possible to delete the VM I used to create the ...
jrd1989's user avatar
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elasticsearch - delete specific indices from snapshot

I used Snapshot And Restore | Elasticsearch Reference to setup snapshot, however I did not specify which one of many indices I need to take snapshot of, which lead to 390 (at the moment) unneeded ...
alexus's user avatar
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Snapshot Backups for qemu VMs on Centos

we are running a couple of qemu/kvm based VMs in a pcs cluster which I want to backup via live snapshots. currently we use qcow2 disk images so there is the possibity to use the qcow external ...
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Disk Is Running Full - While Snapshotting, Coincidence Or Possible Cause?

My disk is running full so I checked server logs and largest files and everything is ok. IOTOP also fine. I deleted 1 GB of files for testing purposes and it takes a minute until the disk runs full ...
mashup's user avatar
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libvirt: guest performance during backup

Here is a simplified version of my backup script that runs in the host: # shutdown the guest to ensure its filesystem is in a stable state virsh shutdown web --mode=acpi sleep 20s # the real script ...
Lucio Crusca's user avatar
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AWS EC2 instance (Windows Server 2008): daily EBS snapshot without downtime

TL;TR I need to backup an AWS EBS-volume without downtime. In details I have a "Windows Server 2008" instance "EC2" on Amazon AWS with two EBS-volumes as C: and D: system drivers. On C: driver ...
ar099968's user avatar
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elastic's snapshot and restore module repository_exception

I'm using elk-docker and trying to follow Snapshot And Restore | Elasticsearch Reference [2.4] | Elastic and getting following error: # curl --request PUT --data '{ "type": "fs", "settings": {"...
alexus's user avatar
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Deleted the data while Amazon EBS Volume While Snapshot in Pending

After I triggered the snapshot of a volume, I go ahead to work on the mounting due to the long hours of waiting and accidentally deleted the data in the volume. Will the snapshot still snap-shoting ...
user3227412's user avatar
3 votes
1 answer
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How to calculate space required to delete snapshot

I wish to to some work on a virtual server, work which requires there to be no snapshots on the virtual machine. At the moment I have one snapshot on the machine, taken yesterday. If I use the ...
user68616's user avatar
5 votes
1 answer
914 views

How much space NAS snapshots consume?

I am trying to understand how snapshots on NAS work. Let's say that I have a 10GB share on NAS. I create a 1GB file. A daily snapshot is taken. After that I delete the file, but the snapshot remains. ...
Alex's user avatar
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3 votes
3 answers
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How long will it take to create a new EBS volume from a 1TB snapshot?

I am taking periodic snapshots of a 1TB EBS (Amazon Web Services Elastic Block Store) volume as backup. In the case of the whole AZ (Availability Zone) becoming unavailable, my Disaster Recovery plan ...
brendan's user avatar
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Ceph Pool Snapshot for CephFS Backup and/or Data Recovery

Since CephFS does not support snapshot yet, could we use Ceph Pool Snapshot for backup purpose from accidental deletion of files inside CephFS? ceph osd pool mksnap {pool-name} {snap-name} ceph osd ...
chrone's user avatar
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Amazon EC2: Is it ok to delete snapshot while it's being copied

We have a process of creating snapshot and copying them to other region. Previously I thought that only after copying progress completed I can delete the original one, but just find out that even if I ...
Arcobaleno's user avatar
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Deleting a Hyper-V checkpoint restores unwanted state

I had hoped that applying and then deleting a CheckPoint would result in all changes since the CheckPoint being discarded, but unfortunately this has proved to not be the case. Here's what I did with ...
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hyper-v accidentally removed snapshot

I (very stupidly) moved a Hyper-V snapshot via Windows explorer and then, of course the VM server would not boot. I moved it back and then removed the snapshot via Hyper-V so there are no snapshots ...
John's user avatar
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Will a Xen Server v5.5 Snaphot run on Xen Server v7.0

I have a Citrix Xen Server version 5.5 running with a few VM's. I want to upgrade the hardware (new hard disks) and also upgrade the OS to the new Citrix Xen Server v7.0. Can I just make a snaphot of ...
Paul Verschoor's user avatar
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3 answers
1k views

AWS Windows SQL EC2/EBS application consistent snapshot

Has anyone found a way to take a EBS snapshot for a Windows Server that maintains Application Consistency? In my case it's with SQL and I'd like to maintain SQL app consistency. Either via quiescing ...
Mike C's user avatar
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2 votes
1 answer
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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 ...
Eltorrooo's user avatar
1 vote
1 answer
958 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 ...
user121391's user avatar
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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 ...
IT_User's user avatar
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1 answer
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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 ...
Craig Ringer's user avatar
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1 vote
1 answer
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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 ...
SPRBRN's user avatar
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2 votes
1 answer
2k 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 ...
Brandon's user avatar
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3 votes
3 answers
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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 ...
J.B.'s user avatar
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5 votes
2 answers
5k 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 ...
tim's user avatar
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2 votes
2 answers
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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 - ...
Norphus's user avatar
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3 answers
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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 ...
Derek Foulk's user avatar
2 votes
1 answer
971 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 -...
defiler's user avatar
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4 votes
2 answers
1k 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 ...
Gregory MOUSSAT's user avatar
1 vote
0 answers
1k 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 ...
Jdamian's user avatar
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3 votes
2 answers
4k 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: ...
TSG's user avatar
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0 votes
2 answers
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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 – ...
yael's user avatar
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20 votes
2 answers
15k 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 volumes,...
SPRBRN's user avatar
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1 vote
1 answer
986 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 ...
Marco Marino's user avatar
1 vote
1 answer
725 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. ...
Simone Nigro's user avatar
0 votes
1 answer
1k 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 COW-...
RobM's user avatar
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0 votes
1 answer
5k 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 ...
Edgars's user avatar
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6 votes
0 answers
2k 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 vg_root/...
gudge's user avatar
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1 answer
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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 ...
Vishnu Nair's user avatar
1 vote
1 answer
114 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 ...
Husain Bhala's user avatar
3 votes
0 answers
667 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 ...
Reaces's user avatar
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