Hi,
Drop me an email; there are other ways to perform this without "destroying" the old snapshot.
Regards Tomas
Den tors 3 jan. 2019 kl 10:29 skrev Davis, Matthew <Matthew.Davis.2@xxxxxxxxxxxxxxxx>:
Hi,
I want to restore a snapshot without deleting the snapshot.
My use case is that I'm experimenting with a lot of different drivers, kernel modules, and file modifications all over my machine.
I want to
1. take a snapshot of the working system
2. make changes
3. restore the snapshot (` sudo lvconvert --merge /dev/ubuntu-vg/$SNAPSHOT` then reboot)
4. make new changes
5. restore to the snapshot again
The problem is that step 3 deletes the snapshot, so step 5 fails.
My current workaround is:
1. take a snapshot of the working system
2. make changes
3. restore the snapshot (` sudo lvconvert --merge /dev/ubuntu-vg/$SNAPSHOT` then reboot)
4. Wait 1.5 hours, without making any changes to the machine
5. Take a new snapshot, with the same name as the original
6. make new changes
7. restore to the snapshot
This is not great because:
* I sometimes forget to do step 5
* I can't take a snapshot of the volume while it is still merging. This takes 1.5 hours. I want to be able to restore my snapshots multiple times per day
Is there a flag I can add to `lvconvert` to make it not delete the snapshot?
Alternatively, is there a way I can make a copy of the snapshot before I restore it?
It looks like someone else asked this question 10 years ago.
https://www.redhat.com/archives/linux-lvm/2008-November/msg00000.html
Has this problem been solved since then?
Thanks,
Matt Davis
Technical Specialist
Telstra | Product Strategy & Innovation - Telstra Labs | Programmable Infrastructure
E Matthew.Davis.2@xxxxxxxxxxxxxxxx
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