Re: Reading from a .tgz takes a long long time
Since tgz is .tar.gz (a tar file compressed via gzip) there is no
surprise that it's slow to get a single file from it. The whole
tarball will be decompressed first and it's definitely expensive.
If you have enough space on your hdd you can store a plain tarball
instead of compressed file - that should work faster. It's also worth
splitting a single archive into multiple files. E.g. you can store
your /home in home.tgz and your /etc (which is small) in a separate
etc.tar file.
Alexey
On Mon, Nov 2, 2009 at 4:54 PM, Merciadri Luca
<Luca.Merciadri@student.ulg.ac.be> wrote:
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> Hello folks,
>
> I use tar to make (not necessarily incremental) backups of my /etc/*,
> /home/*, and other important folders. I am encountering a problem:
> reading a file in a .tgz takes a really long time. I use the
> Archive Manager GUI (of GNOME) to go through all the folders of my
> .tgz. My archive is ~5 Gigs.
>
> For example, let's say that I want to read my old /etc/fstab in my
> .tgz. It takes something like 10 min to open it. The external HDD
> where the .tgz is saved is connected through USB2 (same problem with
> firewire) and other tasks are performed in a reasonable amount of
> time.
>
> Any ideas?
>
> Thanks.
> - --
> Merciadri Luca
> See http://www.student.montefiore.ulg.ac.be/~merciadri/
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