Are there any potential problems with backup of AmigaOS files to Windows ftpd?
In terms of problems when importing back I mean ...
Actual Amiga is AmigaOne running AmigaOS 4.1 update 6,
actual PC is running Windows 7 with NTFS filesystem.

I am speaking of thousands of files ...

Last edited by alef on 17-May-2015 at 06:47 PM.

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Quote:

alef wrote: Are there any potential problems with backup of AmigaOS files to Windows ftpd? In terms of problems when importing back I mean ...

Yes. You'll lose Amiga spesific file attributes, and that's bad.

Unless you first archive them all in the way that attributes are preserved, of course.

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With what should I archive then?

I know there is one preferred archiver for preserving attributes ...
... but I don't recall the name of it.

Last edited by alef on 17-May-2015 at 09:33 PM.
Last edited by alef on 17-May-2015 at 08:21 PM.

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@alef

Lha

@salass00

I know that one of the archivers made for OS4 is ok in this perspective.
What is the name of that? I don't recall ...

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These threads might give more info:
http://amigaworld.net/modules/newbb/viewtopic.php?mode=viewtopic&topic_id=38879&forum=14&start=0&viewmode=flat&order=0
http://amigaworld.net/modules/newbb/viewtopic.php?topic_id=36361&forum=14#750462

UPDATE... I gave up. But here's a tool to copy file links:
http://aminet.net/package/disk/bakup/SortCopy

Last edited by KimmoK on 18-May-2015 at 11:14 AM.
Last edited by KimmoK on 18-May-2015 at 11:14 AM.

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// For freedom, for honor, for AMIGA
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@KimmoK

Useful links when it comes to general Amiga backup, thank you.

But in my case I only need to know the name of that OS4 compression tool
that is recommended in terms of preserving the file attributes flags.

I guess I will find it ...

(and what I am thinking of is not lha ...)

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@alef

LZX?

Quote:

I know that one of the archivers made for OS4 is ok in this perspective. What is the name of that? I don't recall ...

If it was made especially for AmigaOS4, then it must be one of them

Last edited by Raziel on 18-May-2015 at 11:16 AM.

@alef

Maybe you're thinking of Cranu?

To make the process of archiving and transfering more transparent, additionally you could use FTPMount to make the remote storage appear local to the archiver.

However, if you ever want to automate the whole process of backing up, then you'd be better off using the LHA command as Cranu can't take CLI arguments.

Last edited by AlexC on 18-May-2015 at 11:33 AM.

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@alef

It's a good idea to make a backup, but did you also think about how to restore it?

The situation when you want to restore a backup ually is special. Most likely there will be something wrong with your harddrive which means you cannot boot your familiar OS but boot from the OS CD. You might not have all drivers at hand or might not have a network connection. And most important, you might not have access to all software you need.

So using a proprietary software to make a backup might quickly lead into a dead-end when time comes to restore it. You should rather use something which is pretty standard everywhere and can easily be used even in a reduced basic environment.

LhA is the de facto standard on AmigaOS since ages and has made it to other platforms, too, so in the worst case you can even use your PC to copy files from your backup.

Last edited by thomas on 18-May-2015 at 12:02 PM.
Last edited by thomas on 18-May-2015 at 12:01 PM.
Last edited by thomas on 18-May-2015 at 12:01 PM.

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@alef

Quote:

alef wrote: Are there any potential problems with backup of AmigaOS files to Windows ftpd? In terms of problems when importing back I mean ... Actual Amiga is AmigaOne running AmigaOS 4.1 update 6, actual PC is running Windows 7 with NTFS filesystem. I am speaking of thousands of files ...

I'm not sure how it works using two imaginary Amigas like you do, but if I back up thousands of files from my real Amiga and over to my imaginary AmigaTwo, it's simply just to unplug my SCSI box from the back of my Amiga1200 and plug it in the back of my AmigaTwoUAE X. Then I can copy all files back and forth between NTFS or FAT and FFS using a directory or hardfile, plays no role and no need to use LHA, ZIP, RAR or any bullshit. No problems and everything works with no changes to the files or attributes. So why do it complicated when it can be done easy.

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@Hillbillylitre

Quote:

So why do it complicated when it can be done easy.

Dismantling hardware is not "easy" and will wear out connectors etc.

There is a reason why 'removable media' were invented.

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@broadblues

The on and off switch works very nicely on Amiga computers. I have heard it works really well and is much in use on AmigaOne machines too by the way.

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@thomas

I really only need a backup of Work:
SYS: is ok to recover with the AmigaOS4.x ISO images.

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@Raziel

Hmm, I looked around in my Workbench partition, seems like I was thinking of UnArc, hehe, but it will only unpack, not pack. I remembered the problem about file attributes because Hyperion (or somebody else) recommended to use UnArc instead of all other available unarchiving tools at that momen 'cause all the rest could not handle to preserve the file attributes

@All

Yesterday I took a whole backup of Work: using petesFTP over to a ftpd running locally in Windows 7. To my surprise, my AmigaOne remained stabled until all of the backup was done. During this operation I came to think about the file attributes problem, this is why I started this thread.

Ok, then. Sorry I gotta sound like a newbie, but in case of using lha or lxz, could somebody give me the needed lha and/or lzx flags to archive a whole partition with 0% compression? I understand and remember now that using the new version of lha or using lzx has fixed the potential problem with preserving file attributes.

I really appreciate your help, fellas. There is no community like the Amigans!

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Amiga is the One...

@alef

lha -H0 -r -z a archive.lha

Note do not add trailing / if you want the directory itself in the file tree.

the -H0 ensures compatabilty.

the '-z' option chooses not to compress the files, though why do you want 0% compression?t

It goes without saying that archive.lha should not be on the volume you are archiving....

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@alef

lha a -arz Work_Backup.lha Work:

Where "a" is to add files, "-a" is to preserve the attributes, "-r" is to recursively go to your Work partition and gather everything and "-z" to not compress the archive (and yes, you can group the options.

By running lha in a shell without options will give you exactly that

Quote:

10.System:> lha LhA Freeware Version 2.15 AOS4 Copyright (c) 1991-94 by Stefan Boberg. Copyright (c) 1998,1999 by Jim Cooper and David Tritscher. Copyright (c) 2004-2011 by Sven Ottemann. Usage: LhA [-] [[homedir] ...] [@file] [destdir] Where is one of: a Add files c Concatenate/Append archives d Delete files e Extract files f Freshen files h Hunt for diffs arc filesys l[q] List archive (terse) m Move files to archive p Print files to stdout r Replace files t Test archive integrity u Update archive v[q] List archive (verbose) vv Show archive contents (full) x Extract files with full path y Copy archive with new options And is one or more of: -a Preserve file attributes (D) -A Set archive attributes (D) -b Set I/O buffer size (KB) -B Keep backup of archive -c Confirm files -C Clear arc-bit on extract (D) -d Archive date = newest file -D Alternate progress display -e Archive empty directories -E Touch extracted files -f Ignore filenotes -F Use fast progress display -G Only extract newer files -h Disable homedirectories -H Write header level ( 0,1,2 ) -i Read filelist from file -I Ignore ENV:LHAOPTS -k Keep partial files -K Kill empty directories (move) -l Make filenames lowercase -L Create filelist -m No messages for query -M No autoshow files -n No byte progress indicator -N No progress indicator -o On or after date (newer than) -O On or before date (older than) -p Pause after loading -P Set task priority -q Be quiet -Q Alternate option set introducer -r Collect files recursively -R Collect archives recursively -s Only add files with A flag unset -S Set A flag on added files (D) -t Only extract new files -T Only extract new & newer files -u Make filenames uppercase -V Enable/set multivolume size(KB) -w Set work directory -W Exclude filenames -x Preserve and use path names -X Do not append LZH/LHA suffix -y Always append LZH/LHA suffix -Y Store big files w.ratio < 3% -z Do not compress files -Z Compress archives -0 Use LhArc V1.x compression -2 Use LHA V2.x compression (-lh5-) -3 Use LHA V2.x compression (-lh6-) Alternate options: -Qa Use simple console I/O -Qb Test archive before extract -Qd Delete autoshow files -Qh Set Huffman buffer size (KB) -Qm Use filename 'munging' -Qn Set national character mode -Qo Ignore options after cmd -Qp Ignore delete protection flag -Qq Quick add -Qr Skip datestamp check -Qv Set multivolume arc devices -Qw Disable wildcards Options are case-sensitive and may be specified anywhere on the command line, the option letter followed by a 0 disables the option, any non-zero digit will enable it. If no digit follows the option letter, it will be enabled. Some options are enabled by default (depending on used command), the default compression is LHA V2.x-style (-lh5-) compression. For more info please consult the user's manual. The destination directory must have a trailing slash (/) or colon (:).

If you want to have a little more GUI and Amiga feel i can fully recommend "Backup" by Deniil...using it for all my partitions myself (to an USB HDD) and it will work if you give it a volume to back up to (so FTPMount or similar would be needed)

@alef

Cranu is the reverse of UnArc - it creates archives using a GUI so you don't have to use the command line. It can be downloaded from OS4Depot, and IIRC you need to have LhA installed already.

Backing up using removable drives is also an option of course, but as others have said, to keep your file attributes you need an Amiga formatted drive and that can only be read on other Amigas or by using an emulator on your Windows machine, so not a particularly elegant option. If you're only ever going to read the files on Amiga-type machines and don't particularly need them on your Windows 7 box, it might be worth considering an external hard drive formatted with an Amiga file system such as SFS.

Having said all that, I'm not worried about file comments or attributes for most of my files, and back up directly to a network drive without compressing. I lose the attributes but for those files it's the content that matters, and I can read them instantly from any machine on my network if I need to. Most of the files for which attributes are important are on my SYS: partition and I back that up by archiving.

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@archiver name hunt or something

I forgot xpk:

http://aminet.net/search?query=xpk

http://os4depot.net/index.php?function=search&tool=simple

IIRC, it was/is possible to mount some "xpk_dh1" device that packs automatically everything that goes in and unarchives everything that comes out. I have not used it in last 15 years, but before....

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// For freedom, for honor, for AMIGA
//
// Thing that I should find more time for: CC64 - 64bit Community Computer?

@alef

Are you using an FTP client or doing an FTP mount? A client will limit what you can do. Especially regarding protection bits. Though I'd thought by now they would have included a special file in each direcroty that kept a backup of these for cross platform transfer. Kind of like a .fastdir.

If archiving and you have enough space, I recommend turning off compression, as it will just slow the whole operation down. I've done stuff like this before and it can be time consuming. Then again sending an 80GB file over FTP isn't pretty either.