Questions tagged [snapshot]

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32 questions with no upvoted or accepted answers
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763 views

Compiling and running Snapper for Ubuntu

I am trying to get snapper working in my Mint 14. (The version from launchpad is old and not compatible with Ubuntu 12.10. The OpenSuSe's build project failed to build it, too). So I try my luck with ...
3
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0answers
161 views

Revert to snapshot at boot

Can I take a snapshot of a physical machine and revert to that stage every time the machine boots? This can be done with virtual machines, but I want to do it for a physical machine. Background I ...
3
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0answers
715 views

How can I mount a VDI with snapshot?

Working on Linux Mint 18.1, VirtualBox 5.0.40_Ubuntu. I have a VDI file from a VirtualBox VM: ~/VirtualBox\ VMs/Win10x64/Win10x64.vdi I've taken a Snapshot: ~/VirtualBox\ VMs/Win10x64/Snapshots/{...
3
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1answer
588 views

Snapper to only take snapshots if something has changed, or at a lower cadence

I'm using snapper for automatic timeline snapshots of my filesystem. The issue I have is that it continues to take hourly snapshots even when nothing on the filesystem has changed, which causes the ...
3
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0answers
317 views

LXC with both GUI apps and snapshots on unmodified Fedora kernel

I am looking for a tool or library to run LXC that supports: running X applications conveniently snapshotting root filesystems (using a Fedora system with an unmodified kernel), so that I don't have ...
3
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1answer
474 views

Having trouble with LVM snapshot

I have a funtoo linux machine which I am trying to add ubuntu to (thats a whole other issue). It is encrypted with luks and has lvm on top of that. I have a 2 TB harddrive (sdb) which I would like ...
3
votes
1answer
244 views

How to test if two btrfs snapshots are identical or not?

As far as I know, in order to determine if a snapshot is identical with another one or not, we should check if Received UUID of destination is equal to UUID of source snapshot or not. But this time, ...
2
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0answers
526 views

remount boot partition as readonly

I am working on a snapshot driver for the block devices on RHEL 6 and RHEL7 and there is some problem during snapshot specific to boot on RHEL 7, which i am suspecting due to COW related. When I ...
2
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0answers
518 views

create a device-mapper snapshot of an lvm volume multiple linear device with cow data outside of volume group

I need to make an in-memory snapshot of a running mounted root filesystem. The filesystem itself is on an lvm device, but there is zero free space in the VG and there is no way to expand it. However ...
2
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0answers
77 views

using motion to trigger snapshot when movement stops

I am trying to use motion software (but I could use just any other linux software) in order to "log" some manual work by snapshots. So imagine I want to make a stop-motion film with my LEGO(r) toys (...
2
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1answer
595 views

When using dm-cache, how do you do snapshots on a cached LV?

In dm-cache, how do you make snapshots on a cached LV? I tried the usual way on a CentOS 6.7 installation and got the following results: # lvs LV VG Attr LSize Pool ...
2
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0answers
2k views

Creating ISO Bootable Image from a CentOS (Linux) system

I have a Linux machine (CentOS 5.8) on which I have installed multiple applications and tools (with yum and few others after compiling the source code) on it. As I have spent considerable time in ...
2
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0answers
352 views

How do I align my new btrfs default subvolume with the real root of my filesystem?

I rolled back my system by using snapper rollback Unfortunately this caused my current default volume to not be at the root of my filesystem anymore. As you can see in this screenshot: The question ...
2
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0answers
243 views

bad inodes reappear after fsck() for vps guests

I have several vps guests that were created by virt-resize. I do daily backups on the guests by creating a snapshot and rsync file contents. But some of them don't have a clean disk image. As soon as ...
1
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0answers
26 views

Upgrade Ubuntu without btrfs snapshot

On every do-release-upgrade Ubuntu does a btrfs snapshot. What sounds like a good idea is quite annoying if you don't have enough disk space. The update requires the same amount of space as currently ...
1
vote
1answer
616 views

Are BtrFS snapshots killing my SSD?

As I know, BtrFS snapshots don't actually copy data. I suppose, actual copying executes on every change of snapshoted data. So is it right that BtrFS partition on SSD with enabled Snapshots doubles ...
1
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0answers
711 views

FreeNAS: Snapshots on replicated datasets disappear

I am running 2 FreeNAS boxes (let's call them A and B). A is the production server which contains multiple datasets on mirrored/striped ZFS volumes for sharing via cifs, nfs, etc. A is configured to ...
1
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1answer
62 views

Software reccomendation: diff based restore points

i'm looking for software that lets me create multiple restore points that allow me to go back to these points and have my system be in the exact same state as when these restore points were taken. I ...
1
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0answers
458 views

KVM - List snapshots in order of creation

I've only just realized that KVM snapshots default to being listed in alphabetical order, rather than chronological. This can be confusing if you sometimes use the command virsh snapshot-create-as $ID ...
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0answers
397 views

IO Error when trying to create a Btrfs snapshot

In Fedora 23, my / partition is formatted as Btrfs: /dev/nvme0n1p4 / btrfs rw,seclabel,relatime,ssd,space_cache,subvolid=257,subvol=/root 0 0 Full output: $ sudo cat /proc/mounts sysfs /sys sysfs ...
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0answers
133 views

Snapper - how to undo changes, preserving timestamps?

I've damaged modification dates of files on my drive and I wanted to revert them using snapper snapshots but it doesn't seem to work, snapper only reverts content of files not modification dates. ...
1
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0answers
808 views

Centos web camera, fast application for snapshot?

I'm using ffmpeg for taking snapshots / still images with web cameras. I'm going to use several web cameras to take photos at the same time or one after the other (timelapse). It's important for me ...
1
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0answers
182 views

how can I backup and restore of partitions and logical volumes?

This is my disk scheme sda1 /boot ext4 sda2 /somefiles ext4 sda3: lvm volgroup1/lvolume1 / ...
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0answers
91 views

How to efficiently create (read-only) both a snapshot and a diffshot at the same time?

I use rsync to regularly create snapshots of some directories via PAR="-aP --chmod=a-w --no-owner" # Create diffshot rsync $PAR --compare-dest=$CURRENT_SNAPSHOT $SOURCE/ $DEST.changeset.incomplete ...
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0answers
36 views

Backup configuration for Ubuntu Server

How can I make a restore point for a Ubuntu Server 18.04? I have a clean install of the Ubuntu Server OS and before installing any Web Server I want to perform a backup and if something goes wrong ...
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0answers
348 views

CentOS fs (or folder) snapshot without LVM

I do not have an LVM volume in my CentOS7 setup, since RAID1 on XFS with LVM on top = possibly sub-optimal performance (as stated here, have a look at Andres719's comment) However, I want to take a ...
0
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1answer
208 views

Doesn't the existence of LVM snapshots slows down writing a file system wich doesn't support them natively?

As far as understand snapshots in LVM (please, do correct me if I'm wrong): since they are not persistent and work even with a file system which doesn't itself support snapshots => I suppose it must ...
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0answers
25 views

Exclude attached storage from snapshot

I'm trying to setup nightly snapshots of our VMs that exclude our attached storage. I've been looking into lvcreate but can't figure out how to make it pass over certain directories. Is this possible ...
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0answers
30 views

The snapshot is masked, not in raw colors

I capture screen using gnome-screenshot 3.18.0. When we select the region to capture, the region is masked and becomes blue. When saving to picture files, the snapshot is expected to be back to raw ...
0
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1answer
171 views

Restore a disk from a snapshot in XEN 4.6

I created a snapshot with lvcreate -n snap01.vm01 -L 5G -s vg0/vm01.eclabs.de now I did some stuff on my disk i don't want to keep and want to revert it to the snapshot point. How do I restore the ...
0
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2answers
825 views

Solaris 11 /var used significant space, but I cannot see it on filesystem

I have a mirrored rpool: NAME USED AVAIL REFER MOUNTPOINT rpool 72.1G 1.22G 39.5K /rpool rpool/ROOT 67.9G 1.22G 31K legacy rpool/...
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1answer
30 views

Is it better to wait for Snapper to finish before rebooting?

I run various openSUSE systems with btrfs file systems. On these setups, openSUSE uses Snapper to manage filesystem snapshots. Every time I finish updating the system using Zypper or the YaST ...