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Re: [Gnu-arch-users] Re: Tar as filesystem
From: |
Brian May |
Subject: |
Re: [Gnu-arch-users] Re: Tar as filesystem |
Date: |
Tue, 06 Jan 2004 09:22:13 +1100 |
User-agent: |
Gnus/5.1002 (Gnus v5.10.2) Emacs/21.3 (gnu/linux) |
>>>>> "John" == John Goerzen <address@hidden> writes:
John> On 2003-12-29, Aaron Bentley
John> <address@hidden> wrote:
>> Perhaps these observations can be helpful the next time
>> tar-as-filesystem comes up:
John> Not really novel here. You may, however, find zip to be a
John> much more useful "filesystem". It is designed to random
John> access. Tools already exist to do true
John> adding/updating/deleting. And you get some compression for
John> free.
John> Zip's traditional downsides are that it does not handle
John> Unixy metadata terribly well, but that is not of great
John> importance here, since only plain files and directories are
John> being stored, and it is fine with those.
There are also alternatives to tar, eg. dar; from the man page:
"At the difference of the tar command, dar is not suited to
directly use tapes. So keep using tar for tape archives.
Because, even using tar to write a slice on a tape, you
will loose all the interest of another feature of dar
which is its ability to directly access the data of saved
file even when compression is used. This way and in conĀ
trast to the tar command, dar is able to extract a given
file much faster from a backup and to also recover files
that follow a data corruption (loosing just the file in
which data corruption occurred)."
I don't know if dar is suitable for this project for this purpose or
not, but it does strike me that it would appear to overcome at least
some of the limitations that were encountered in tar (I am not sure of
file deletion).
The web page is <URL:http://dar.linux.free.fr/>.
--
Brian May <address@hidden>