Cloning an EXT4 partition

[Colin Law]

On Mon, 5 Aug 2019 at 22:03, Kevin O'Gorman <kogorman at gmail.com> wrote:

>
>
> On Tue, Jul 9, 2019 at 3:04 PM Liam Proven <lproven at gmail.com> wrote:
>
>> On Tue, 9 Jul 2019 at 23:49, Kevin O'Gorman <kogorman at gmail.com> wrote:
>> >
>> >  It persists in giving me errors with messages that don't make sense:
>> File too big when there's plenty of space, for starters.
>>
>> If you're backing up onto FAT disks, you need to remember the size limits.
>>
>> On FAT32 a file can only be up to 2GB (less 1 sector), no more.
>>
>> exFAT allows bigger but it is not enabled by default on most Linuxes
>> because it's MS patent protected. Cynically I think this is 1 reason
>> they did exFAT -- because they tried to copyright FAT32 but it was too
>> late, dozens of 3rd parties had implemented it.
>>
>>
> All my backup media are ext4 (maybe an occasional NTFS, but not lately).
> So I still don't get it.  Nowadays it's almost always a 4 TB internal
> drive in
> a USB 3 drive dock, and I formatted it EXT4 myself to give it names that
> make sense in my backup scheme.  I have a dozen or so of these.
>

Clonezilla uses partclone and has a very good name.  I use it (though not
with massive partitions) without problems. It might be interesting for you
to try clonezilla to whether it succeeds.  It tells you the low level
command it uses so you can use that manually from the command line or
script to repeat similar operations.

Colin
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