Server Fault Stack Exchange
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Questions tagged [snapshot]

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

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

460 questions
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VMware ESXi running on dual NFS NAS Configuration using rsync and snapshot scheduling

I'm considering a setup for a client. GOALS 10 users 2 servers maximum redundance (with minimal costs) maximum scalability (with minimal costs) HARDWARE Here's the hardware I'm considering: 2 x Dell PowerEdge R610 with Intel Xeon L5520 CPU and 8 GB…
user23815
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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 usable. A secondary backup of 4 x 2 Tb disks (4 Tb…
Gregory MOUSSAT
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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…
eKKiM
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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. In other words, will a small change in a file…
Álex
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Remove a file from a btrfs snapshot and still use btrfs send/receive?

I'm planing to use btrfs send/receive to synchronize two filesystems and keep a few older snapshots (like a time machine) on the backup. Now what happens if a user ask me to remove a file or directory from all the backup snapshots because it…
ascobol
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LVM snapshot of btrfs volume changes mounted device

I have a btrf volume on top of LVM. Now I want to do a snapshot on the lvm level (NOT on the btrfs level). But every time I create the LVM snapshot, btrfs changes the mounted block device to the snapshot like I was using some kind of --bind mount…
Thilo
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See progress of lvm --merge

Is there any way I can see the progress of a merge of my snapshot back to the origin? The only thing I know is that there is an ongoing merge because I can't create a new snapshot.
Andreas Wederbrand
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Is it safe to delete this snapshot?

Building on a previous question I had asked re: a VM freezing at the end of the backup, one of the solutions Veeam has offered is to make sure that there are no other snapshots that exist of that vm. After looking into it, I've found the following…
DKNUCKLES
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How to determine optimal size for LVM snapshot?

I'd like to create a backup script that uses LVM snapshots during backup. This script will run on several Linux machines. I'd like to avoid creating snapshot that is too small and gets full during backup. I have only volume size, percentage of used…
DmitriD
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Downloaded -flat.vmdk from snapshoted machine is different everytime

I have a virtual machine running on VMware ESXi 4.1.0, machine has one Thick provisioned disk stored in VM forder (residing on local datastore). I am planning to move the virtual machine to another ESXi host with minimal downtime - I was planning to…
DavisNT
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What would cause huge amounts of snapshot lag with NetApp Snapvault?

Our NetApp filer shows huge amounts of lag for snapvault operations. What could be possible causes of such large snapshot lag? Snapvault is ON. Source Destination State Lag Status home:/vol/home/ …
Edilaic
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Is there a reason(s) I should not create a datastore to house a single VM?

I was at a Dell EqualLogic training event and the speaker threw out the idea that it may not be a bad idea to create a single datastore to house a single VM rather than making a large datastore and putting several VMs on it. His reasoning was that a…
Chris76786777
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Is it possible to convert a LVM2 snapshot to a linear LV?

We have DRBD volumes that are presented to guests, and we often snapshot them with the intention of reverting back to the snapshots. I understand in LVM, snapshoting then working with the snapshot is preferred when doing something experimental but…
hellomynameisjoel
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Hidden Periodic Screenshots on a corporate workstation?

Can anyone recommend something that allows us to take hidden periodic screenshots of a workstation? We have a user who we believe is abusing his computer privileges. We have our suspicions that he may be playing games, etc. We need to monitor his…
ssxuser80
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Are ZFS snapshots + S3 a viable backup system for several VMs and general fileserver storage?

I've been tasked with setting up a backup system for my small office (around 12 people). Most of our production stuff is on the AWS cloud, so what I need to back up are some small office/development files (under 100G right now), plus our operational…
AllanA
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