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Author Topic: squashfs-lzma “linux-live-script”  (Read 11823 times)

Offline curaga

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Re: squashfs-lzma “linux-live-script”
« Reply #15 on: May 26, 2009, 04:18:39 AM »
The 7zip algorithm for gzip only affects compression, increasing both time and ratio (but still being about as fast as bzip2 to compress, and with no speed decrease decompressing). Because the stream is standard, 7zip compressed gzip streams can be decompressed with any compliant implementation.

Oh, and we already have such :) advdef in advcomp.tce can be used to recompress gzipped files with the 7zip algorithm for smaller files. It's used both for extensions and the base image.
The only barriers that can stop you are the ones you create yourself.

Offline TraperJohn

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Re: squashfs-lzma “linux-live-script”
« Reply #16 on: May 26, 2009, 04:24:05 PM »
I thought that lzma used 7zip compression with a slightly different format.
 ???Then I don't understand: how come lzma is not up to squashfs 4 yet if 7zip is ????
I guess that 7zip is the way to go 8).
Thanks.

Offline curaga

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Re: squashfs-lzma “linux-live-script”
« Reply #17 on: May 27, 2009, 04:26:56 AM »
This is a bit confusing, I agree :)

7zip is a program, and a format. When talking about the program 7zip, they have a more efficient gzip algorithm there than in gzip. The 7zip format instead uses lzma compression.
The only barriers that can stop you are the ones you create yourself.

Offline TraperJohn

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Re: squashfs-lzma “linux-live-script”
« Reply #18 on: May 27, 2009, 02:00:24 PM »
O

Offline jpeters

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Re: squashfs-lzma “linux-live-script”
« Reply #19 on: May 28, 2009, 01:25:37 AM »
What is tc using for its backup.tgz ?  I manually tried cpio and tar ...neither worked.   

Offline curaga

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Re: squashfs-lzma “linux-live-script”
« Reply #20 on: May 28, 2009, 04:10:45 AM »
backup.tgz is a regular gzipped tarball, perhaps yours is corrupted?
The only barriers that can stop you are the ones you create yourself.

Offline jpeters

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Re: squashfs-lzma “linux-live-script”
« Reply #21 on: May 28, 2009, 08:27:25 AM »
backup.tgz is a regular gzipped tarball, perhaps yours is corrupted?

It unpacked okay with tar, but after repacking with 'tar -czf', the file would disappear when booting and load norestore,  I did this several times, with the same result, and had to add files and backup from within tc for it to work.   Also, when I moved  a 'myfiles.tgz' it created a circular dir structure (link to ".") that appears to be impossible to delete.  

edit: I'm thinking maybe there's an issue with the file or file location being in use, since I was also getting "Stale NFS file handle" issues when simply trying to move "tinycore.tgz.bak" to "tinycore.tgz"  I think I had to do something like first move it to another folder,  
« Last Edit: May 28, 2009, 11:41:40 AM by jpeters »

Offline TraperJohn

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Re: squashfs-lzma “linux-live-script”
« Reply #22 on: May 31, 2009, 04:20:39 PM »
I got back from vacation ;D and back to work :-\.
After are discussion I mounted the tinycore iso, decompressed the tinycore.gz and expanded the CPIO'ed tinycore.
Now I see the typical linux fs but where is the tce, tcz and other images I expected ????
I thought TC used compressed  images in tce, tcz formats on the iso.
Don't get me wrong I am used to one big fs to edit like in the core lzm of Slax ;) but when you were talking about replacing applications you noted the  tce, tcz extensions.
 ???So now I'd like to know what you were talking about?

Offline jpeters

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Re: squashfs-lzma “linux-live-script”
« Reply #23 on: May 31, 2009, 06:40:38 PM »
Extensions are kept in a separate folder that can be pointed to in  boot options  (eg, tce=/hdax/tcz).  That way, they'll load even if you change to a an updated boot folder.  Check out the intro help docs.  
« Last Edit: May 31, 2009, 06:45:37 PM by jpeters »

Offline TraperJohn

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Re: squashfs-lzma “linux-live-script”
« Reply #24 on: June 01, 2009, 11:55:29 AM »
But are the applications installed in to the fs or mountable during boot from tce...?
If they are the latter then I'd expect to see some of them in the iso already.

Offline jpeters

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Re: squashfs-lzma “linux-live-script”
« Reply #25 on: June 01, 2009, 12:06:00 PM »
But are the applications installed in to the fs or mountable during boot from tce...?
If they are the latter then I'd expect to see some of them in the iso already.
The iso contains grub, the kernel and pristine setup that can be rebooted at any time using
the "norestore, base" bootoptions. All the rest is modular, using extensions in a separate folder.    
See wiki, remaster, for info regarding opening tinycore.gz.
« Last Edit: June 01, 2009, 12:10:32 PM by jpeters »

Offline TraperJohn

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Re: squashfs-lzma “linux-live-script”
« Reply #26 on: June 01, 2009, 07:18:13 PM »
What's the name of the separate folder?

Offline jpeters

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Re: squashfs-lzma “linux-live-script”
« Reply #27 on: June 02, 2009, 12:31:48 AM »
your choice (see my previous post) . Please read the intro help docs  :)
« Last Edit: June 02, 2009, 12:33:51 AM by jpeters »

Offline TraperJohn

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Re: squashfs-lzma “linux-live-script”
« Reply #28 on: June 02, 2009, 07:45:20 PM »
The iso contains
boot with sub directories isolinux, bzImage (the kernel), and tinycore.gz (the compressed CPIOed fs/linux-stuff).

boot options...
Quote
"norestore, base" bootoptions.

Quote
All the rest is modular, using extensions in a separate folder.
???separate folder??

Offline jpeters

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