2
votes
3answers
147 views

Difference between fsfreeze and lvm snapshot

I heard recently about fsfreeze and I'm very interested in making snapshots of my VM with VMware and get a consistent state of disk using quiescence. All my file-systems are LVM volumes, and man ...
0
votes
0answers
51 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 / ...
0
votes
1answer
116 views

LVM Snapshot without copy-on-write

I've been experimenting with LVM and how I can use it for managing data on my NFS server. With everything that I've read about snapshots, I am still unsure about how they perform in real life. Why ...
2
votes
1answer
126 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 ...
0
votes
1answer
50 views

Taking a sparse snapshot

I would like to take a dm snapshot of a drive. I do not want to take the snapshot of the unused and deallocated blocks. Is there any way of determining the used blocks and sectors of a hard drive ...
0
votes
1answer
83 views

Linux snapshotting issues [duplicate]

Is there any way to deal with incoming writes while a backup is in progress in linux. Example, you are writing to your sql database and lvm snapshotting at the same time. This will result in corrupted ...
1
vote
2answers
382 views

Should I be worried? Segfaults reported in syslog when merging LVM snapshot (reverting the original back to the snapshot)

I was just experimenting with snapshots in LVM on Ubuntu 12.10. I created a snapshot logical volume of 6.5 GiB, and after making some changes to the origin decided to merge the snapshot back in to ...
7
votes
1answer
288 views

Do LVM snapshots ultimately cause fragmentation?

I'm planning on using LVM in order to be able to take atomic snapshots of large files and rsync them to a remote site. What I'd like to know is whether there is any long-term impact on the main ...
3
votes
3answers
2k views

Temporary restore LVM snapshot of root

I have a snapshot of the root filesystem that I want to boot with - bring the machine into a state it was a few days ago, run some tests and then go back to where I am right now. I tried editing ...
2
votes
1answer
1k views

How much can the space allocated for an LVM snapshot be reduced?

I created an LVM snapshot, then I modified the original logical volume, and now I see that I probably allocated too much space to hold the snapshot. And I want to reclaim some free space by reducing ...
3
votes
1answer
263 views

Create Logical Volume Snapshot at boot and before mount

I'm using Kubuntu 11.10 and before I upgrade to 12.04, I want to make snapshots of my filesystems. Coming to think of that, I realized that it can be very useful to create snapshots of logical volumes ...