All Questions
31
questions
0
votes
0
answers
51
views
Btrfs snapshots are empty
I am using btrbk to make snapshots of my @home subvolume, but the snapshots are empty, zero bytes.
I think I need to automount home, somehow.
I see in the Btrfs Assistant File Viewer that the root ...
- 246
1
vote
1
answer
244
views
Where is mounted LVM snapshot volume's size come from?
I'm learning to do backup database with LVM snapshot.
While on it, I found some behavior of snapshot that I can't get it.
Here is my setup:
1 Physical Volume and Volume Group from it with size 1.95T (...
- 11
0
votes
1
answer
34
views
Apache Ignite - Automatic Cluster Snapshot Create / Restore Procedure
When trying the Apache Ignite cluster snapshot procedure (snapshot create, restore), the restore operation is not successful.
Before the restore procedure, we have destroyed the cache which we want to ...
1
vote
0
answers
30
views
How to determine how the data was set when creating the ext4 on the raid0 LVM
I am working on consistent snapshots verifications. We snapshotted the raw device attached (saying two drives sdb and sdc) to a host and want to check the data was preserved with the desired orders as ...
- 21
1
vote
1
answer
690
views
Does multiple snapshots influence the performance?
My desktop system(Kubuntu-20.04.4, with LVM2 root-fs) need to be frequently adjusted the configurations, but some configuration would be fault.
I take a new LVM2 snapshot of root fs, before every time ...
- 239
0
votes
1
answer
5k
views
How to remove a snapper config when getting error “deleting snapshot failed”?
I am using snapper to take snapshots of btrfs volumes. I have one for /var as well, but decided that I want to get rid of it. It corresponds to the _var snapper config. I can't manage to do this, ...
- 465
0
votes
0
answers
605
views
AWS Instance Created from Snapshot Failing "Instance reachability check"
I have a dev environment hosted by AWS (t2.large, RHEL 7.4) that is backed up with a snapshot every couple of hours. Today, I tried to create a new instance from one of those snapshots to run some ...
1
vote
2
answers
168
views
Running du on timeshift folders give different results
My goal is to find which files/folders take the most space in a snapshot from the backup tool timeshift but, when using du it yields different results:
# du -hs *
18G 2018-09-21_16-14-57
910M ...
- 45
1
vote
1
answer
58
views
virtualbox snapshot - is it a safe back-up if I want to over-write (dd to) sda1?
I want to do some testing useing chroot to overwrite sda1 (my main partition) in a ubuntu VM. Is taking a virtualbox snapshot a safe way to create a backup?
i.e. in the VM I want to create a chroot ...
- 1,577
5
votes
1
answer
815
views
Is there a ZFS-aware diff?
I often make snapshots of a ZFS volume (containing AOSP) make some changes (often extracting ZIP files over then top, or running scripts) and then run diff to see what has changed.
This is really ...
- 195
2
votes
1
answer
2k
views
How do I set up a bootable incremental ZFS-on-root backup on a seperate drive?
I installed antergos Linux with ZFS-on-root. The system is up and running and I’m glad because that alone is a success for me. Now apparently ZFS is mainly for NAS, RAID, Server configs etc. (and I ...
- 123
3
votes
0
answers
628
views
Does ZFS support something like "nodatacow" of BTRFS?
This is a follow up to a former question about BTRFS and in the end I want to have a file system supporting at least the manual creation of snapshots for backup and test purposes. The data I'm hosting ...
0
votes
1
answer
147
views
Deleted AutoProtect snapshots and can't boot VM's
I've had 3 VM's running AutoProtect fine for several months but decided it was pointless and wanted to disable it.
I also simultaneously wanted to enable Persistent Independent disk access. I wasn't ...
- 3,411
1
vote
1
answer
1k
views
How to create a snapshot of current ubuntu installed programs, so that I can copy it to another fresh installation of ubuntu?
I have some installed programs on Ubuntu on my remote server (which I have root access to it). Now I need to install a fresh Ubuntu on some other machine/server, and I don't want to go through ...
- 119
3
votes
1
answer
876
views
How to make (and restore) an application snapshot in runtime?
I'm trying to make a snapshot of a running application, in runtime, and restore it afterwards. By 'snapshot' I mean complete state of my application - I suppose that's just memory pages and CPU ...
- 141