2
votes
0answers
27 views

Change the logical volume

I am quite new this snapshot process. Let, I have three logical volumes as A, B, C. I worked on logical volume C. But accidentally when I restart the system, it goes to the snapshot A. How can I ...
0
votes
1answer
64 views

Detailed explanation of how virtual machine snapshots work

I would like to fully understand how virtual machine snapshots work. Although I have researched this subject I cannot seem to find a "high-level" overview of how snapshots work practically. My ...
0
votes
1answer
86 views

LVM2: How to copy snapshots?

I read What does an LVM2 Snapshot contain? and LVM Snapshot confusion. What I'm trying to figure out is if there is a way to create a copy of an LVM snapshot for use with different Xen VMs. I know ...
0
votes
1answer
218 views

An LVM snapshot of an ext4 fs does not seem very clean

I create an LVM snapshot of a mounted ext4 fs: lvcreate -L 10GiB -s -n "root-snapshot" "/dev/myvgname/root" If I then run e2fsck on /dev/myvgname/root-snapshot, it says: e2fsck 1.42.5 ...
-5
votes
1answer
88 views

best way to create lvm snapshot of / partition [closed]

I need to know the best way to implement the snapshot of root partition "/" on a kvm guest. What I have is as follows 1- /dev/vda ..... 10G free -- /dev/vda1 boot partition (ext - 83) -- ...
2
votes
1answer
163 views

Multi-Generation Snapshots using Device Mapper (Linux)

LVM is an amazingly useful tool, however, it seems to still lack support for snapshotting a drive that is already a snapshot. I made a script to handle this automatically but ran into some troubles. ...
1
vote
2answers
1k views

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 ...
2
votes
2answers
465 views

Export snapshot from VMWare Workstation 8

How to export virtual machine from VMWare Workstation 8 to another physical computer with installed VMWare Workstation 8? i.e. how to move snapshots between different instances of VMWare Workstation ...
1
vote
1answer
136 views

lvm snapshot differences

All machines are centos 6, 64bit My rpm-build machine ends up with a directory it runs createrepo against. This is then NFS mounted (read-only) to an rpm repository hosting machine in a ...
-2
votes
2answers
546 views

File replication program for Linux

For my disaster recovery plan I am looking for a free/open source file replication program which could copy all files including open/busy files to a remote server. Would appreciate any suggestions or ...
2
votes
2answers
623 views

LVM-snapshot based KVM VMs

As far as I know, LVM snapshots basically don't take any "real" space on hard drives. I'm using KVM virtualization on my hosts and let's say I create an LVM volume for my Linux VM, then install it ...
1
vote
1answer
310 views

Can I create a LVM snapshot on a “full” logical volume?

I want to try using LVM snapshots for backups. I'm working on an older CentOS 5 box, but I'm not sure if I can do it. From what I read, it seems like I need extra space on the physical disk in which ...
0
votes
1answer
864 views

What can go wrong with dmsetup suspend / resume?

I have a backup procedure for ec2 instances with lvm spanned volumes that does the following: 1) ssh to the box as root using an ssh forced command to dmsetup suspend the spanned volume. 2) take an ...
2
votes
4answers
1k views

where are kvm-snapshots stored?

I run several VM's on KVM/ubuntu, which all get started with the -snapshot parameter (the VM's only compute several things which can be destroyed after reboot). Out of the docs I've read, the changes ...
4
votes
4answers
2k 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 ...
0
votes
1answer
179 views

LVM 2 snapshots and free blocks

LVM 2 snapshots works as COW. However the block may change even if it is not used anymore. As SSD disks may need marking of free/used blocks to better manage blocks, the API was introduced into Linux ...
3
votes
3answers
553 views

How to take snapshot of the filesystem in linux (files, their sizes only, not their data)

We need to take a snapshot of your linux server. We don't want to backup the data, just a snapshot we can compare against changes.
7
votes
4answers
9k 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 ...
10
votes
4answers
20k 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 ...
1
vote
3answers
4k 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 ...
3
votes
2answers
3k views

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 ...