Re: Split a Replica Job Into Two

I believe Brian was referring to the initial scan after the archive files
are removed. The entire contents of the replica must be scanned then. This
is always going to take time because it is bound by the storage speed and
the entire 190 GB is read in. After the initial scan it will be mostly a
metadata scan and should complete in seconds.


On Wed, 17 Apr 2024 at 23:09, Eberhard W Lisse <[email protected]> wrote:

> I have been using Unison for more than 20 years, mainly on Macs, but also
> a little on Windows and Ubuntu and currently have 65 GB home directory on 3
> Desktops and 2 Laptops in an Intel and Silicon mix (all Mac). I use
> Homebrew and unison -version shows 2.53.4 (ocaml 4.14.1)
>
> Reconstruction of the archives takes around 30 seconds on the same WiFi.
> From the outside it takes perhaps a minute or less. I am convinced that
> tripling the size will not make this much worse.
>
> Making Backup of the Backup sounds silly to me. Rather upgrade on all
> sides and see what that does.
>
> el
>
> --
> Sent from my iPhone
> On Apr 17, 2024 at 20:27 +0200, 'Brian Spraker' via unison-users <
> [email protected]>, wrote:
>
> That is a good idea.. and then potentially script something that makes a
> backup once a week.
>
> On Wednesday, April 17, 2024 at 12:49:38 PM UTC-5 [email protected]
> wrote:
>
>> "'Brian Spraker' via unison-users" <[email protected]> writes:
>> > The storage is up to about 190 GB now. Over the past few months, the
>> > archive files are getting corrupt. This requires that the archive file
>> on
>> > both systems be deleted - and the whole replica has to start over again.
>> > The first time the archive files are set up, it takes several hours for
>> > Unison to scan and set up.
>>
>> One cheat you can do is that once you get a Unison run to complete
>> successfully, copy the archive files to a safe place. (Probably the
>> simplest is to copy ~/.unison whole.) If the archive files get
>> corrupted, you can replace them with a copy of the saved version.
>> Unison will still have to do extra checking when it is run next with the
>> restored archives, but likely a lot less work than it would take to
>> recreate them completely.
>>
>> Dale
>>
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