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

learn more… | top users | synonyms

1
vote
1answer
148 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 ...
0
votes
2answers
83 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 ...
0
votes
0answers
48 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 ...
2
votes
1answer
1k 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 /srv/vm/prod....
0
votes
2answers
378 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 ...
1
vote
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 ...
3
votes
4answers
5k views

libvirt and qemu/kvm -snapshot option

Using libvirt, I want to use QEMU's '-snapshot' option. That way, when the machine shuts down, all of the disk changes that were made get destroyed. Here is the manual for the -snapshot option: ...
6
votes
1answer
4k views

Why does OpenStack distinguish images from snapshots?

Usually, http://serverfault.com/a/268727/126950: snapshot = an exact capture of what a volume looked like at a particular moment in time, including all it's data. image = a total snapshot of a ...
2
votes
2answers
2k views

xenserver snapshot chain too long

I've been running a XenServer 6.2 server for a month or so and recently one of my VMs will not perform snapshots. I receive the error "The snapshot chain is too long" although I have removed all of ...
2
votes
0answers
81 views

ZFS - zfs destroy snapshot during zfs send incremental

How does zfs handle destroying snapshots during an incremental send? Example: 2 servers using ZFS: zfshost1 [root@zfshost1~]# zfs list -t snapshot NAME zones/40e66d56-4ea8-11e5-885d-feff819cdc9f@...
0
votes
0answers
61 views

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 ...
1
vote
1answer
118 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 ...
2
votes
1answer
3k 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: ...
8
votes
3answers
12k views

vmware esxi 5, cant create snapshots and consolidate fails, how to delete old or consolidate redo logs?

I have a VM that seems to be working ok, but when VMWare DR (or I) tries to create a snap shot, it fails, and when I view the summary page of the VM it has a warning at the top showing that the disks ...
23
votes
4answers
15k 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 ...
0
votes
1answer
33 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 ...
10
votes
5answers
14k views

Linux LVM snapshot commit or revert?

I'm about to perform an experimental upgrade on my CentOS 5 server. If the upgrade fails, I want to be able to back out the changes to the filesystem. This scenario seems similar to the example in ...
2
votes
0answers
641 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 ...
0
votes
1answer
19 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: ...
0
votes
1answer
41 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 ...
0
votes
0answers
494 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 ...
1
vote
1answer
140 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 ...
1
vote
0answers
77 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), ...
5
votes
1answer
755 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 ...
0
votes
1answer
175 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 ...
2
votes
1answer
554 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 ...
2
votes
1answer
375 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 ...
11
votes
1answer
4k 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 ...
3
votes
5answers
3k views

Handling XenServer snapshotting and cloning with ZFS SAN

I'm planning on setting up a XenServer machine that uses a NexentaOS/ZFS-based SAN for storage of the Virtual Disk Images (VDIs) through iSCSI. I know I could just setup a big Storage Repository (SR) ...
3
votes
2answers
322 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 ...
3
votes
1answer
410 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 ...
16
votes
2answers
2k 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. ...
0
votes
1answer
549 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 ...
3
votes
2answers
4k views

Is it possible to create an EBS AMI for windows EC2 instance?

We have a Windows server (EBS backed) running in EC2. We make regular snapshots for data backups. I'd like to create a new EC2 instance from one of these snapshots. Yes, I realise this is the same as ...
3
votes
2answers
377 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 , ...
-1
votes
1answer
201 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 (pipe:[23409]...
0
votes
2answers
55 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 ...
3
votes
1answer
72 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. ...
0
votes
1answer
407 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 ...
-1
votes
1answer
250 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 ...
0
votes
1answer
75 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 "...
2
votes
3answers
11k views

Is it possible to copy a snapshot and associate it to another VM (which has same configuration)?

I am having two virtual machines with same OS and software list. (In fact they were cloned). Now I have installed an application in a VM and taken a snapshot. Is it possible to copy this snapshot ...
3
votes
2answers
779 views

ext3 Snapshot Support

Does the ext3 filesystem support snapshotting? If so, is can this be done with straight partitions with no LVM? An example of "straight partitions" would be the following: /dev/sda1 /boot ext3 /...
1
vote
1answer
300 views

Replication with Veeam causes timeouts on large VM's

I have been trying to replicate two of my larger VM's one being Exchange 2003 and once the snapshot begins to commit the server begins to time out. I have updates my ESX hosts from 4.0.0 to 4.1 and ...
2
votes
2answers
393 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 ...
4
votes
1answer
4k 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 ...
1
vote
0answers
463 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 ...
1
vote
2answers
9k views

export XenServer snapshot as file via console

I have created a snapshot of a Citrix XenServer virtual machine using XenCenter, and now I would like to save this snapshot as an *.xva file, just as if I right-click on the snapshot icon in XenCenter ...
1
vote
0answers
263 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 ...
1
vote
1answer
3k views

SQL Server 2008 R2 - Cannot create database snapshot

Server: Windows Server 2008 R2 X64 Enterprise SQL: SQL Server 2008 R2 Enterprise X64 I have a default SQL Server instance, the SQL Server service account is running as a domain user. I am trying ...