Re: [gentoo-user] NAS and replacing with larger drives

[Frank Steinmetzger]

Am Fri, Dec 09, 2022 at 01:13:50PM +0000 schrieb Michael:

> > > I get the impression Dale isn't actually PLANNING his disk storage. It's
> > > just a case of "help I'm downloading all this stuff where do I put it!!!"
> >
> > Haha, thanks for the laugh.
>
> Actually this had me thinking what is the need to back up the ... Internet?
> […]
>
> I appreciate some of these video files may be rare finds, or there may be a
> risk some of these may be taken off the interwebs sooner or later.  This
> should leave a rather small subset of all downloads, which may merit a local
> backup, just in case.  I'd thought the availability of higher fiber download
> speeds negates the need for local backups, of readily downloadable media.

Good points. I am a big fan of having stuff locally as well, because I don’t
want to be dependent on a company’s servers and a working Internet connection.
But this mostly applies to my mobile device, because I don’t have a data plan
for mobile Internet.

> > Well, ts uses mpeg2 encoding, just like old video DVDs, which is very
> > inefficient when compared with modern h264/h265. Modern digital TV broadcast
> > uses h264 by now.
>
> Depending on the PVR make/model I've seen 1080p resolution recordings with
> .m2ts and .ts file extensions, while the codecs inside them are the same.

I wasn’t aware that ts could contain h264. But then again—I never really
bothered with live TV recordings in recent years. These days, if I find
something interesting, I download the show form the TV channel’s website
(called Mediathek in Germany, a word play on Bibliothek, meaning library).
Interestingly though, the picture quality is noticably worse than what I
receive via DVB-T.

> > ¹ I do have several external USB disks, plus the big NAS. All of which don’t
> > run very often. And I don’t want to turn them on just to look for a certain
> > file. That’s why I have another little script. ;-) It uses the `tree`
> > command to save the complete content listing of a directory into a text
> > file and names the file automatically by the name of the directory it
> > crawls. So if I want to find a file, I just need to grep through my text
> > files.
>
> Backup scripts utilising rsync, tar, etc. can output a log file which contains
> (some) details of all the backed up files.  Nothing as sophisticated as
> Frank's script, but it allows for a quick search against the name of the file
> or directory, before extraction.

Naturally, I just discovered two bugs in the script while I was re-reading
my mail. One of them broke the creation of the symlink which points to the
most recent version of a script output. The other prevented normal operation
if only gzip was available amongst the used compressors.

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