Am 04.03.2016 um 23:05 schrieb doark@xxxxxxxx:
On Tue, 1 Mar 2016 19:18:12 Sven Eschenberg wrote:
While this is off-topic for this list, if you want to include all data
look at tools like partimage or projects like clonezilla?
If you just want to backup the metadata of all layers in the storage
stack, I'm not aware of any tool for this task.
Am 01.03.2016 um 13:50 schrieb Sumaya1960@xxxxxx:
Hi,
I just wonder, if anyone knows how to save the complete
disklayout/disk partititions for restoring the partitions with the
same layout and UUIDs on another disk.
To establish a disatser recovery plan is the goal of my question.
I am using a NVMe M.2 SSD from Samsung. There you see /dev/nvme0n1 and
it's partitions....
Any ideas and help would be wonderful!
Thanks to everybody!!!!
Susu
AFAIK UUIDs are unique to the device and to the partition. You can't
back them up or restore them to any device. If I'm wrong on this please
say so, I'm willing to be wrong.
Also, it seems to me that a backup solution for encrypted data should
backup and compress the unencrypted data and then reencrypt it. Your free
to do the backup of the whole encrypted partition though.
The very purpose of UUIDs is to be UNIQUE in every respect. It is
however no problem to i.e. backup metadata including UUIDs and use it
for another disk at a later time, i.e. on a replacement disk after a
failure. (Depends of the setup used to a certain extent)
A mirror (i.e.) will have the very same FS UUID on both legs
(obviously). If the mirror falls apart, then the fs driver will usually
prevent you from mounting both copies of the FS, as the UUIDs are
identical and a double mounts ask for major wreckage. But, as you can
observe, the context defines uniqueness.
Sincerely, David
Regards
-Sven
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