Sending to ports@ to continue this part of the discussion.
Please remove misc@ in any replies.
On Thu, Jul 20, 2017 at 01:20:41AM +0200, Stefan Wollny wrote:
> >> When it comes to backups one usual advice (among others) is to make use
> >> of different storage types. So I have tar'ed one folder (~32GB) and
> >> zip'd with p7zip. man p7 explains the '-v{size}bkmg'-switch but I got
> >> "System ERROR: E_NOTIMPL".
> >
> > I am unable to recreate this problem on amd64. I just used
> >
> > $ vmctl create 100mb.file -s 100m
> > $ 7z a test.7z 100mb.file -v5k
> >
> > I obtained 4 output files, test.7z.0001 thru test.7z.0004.
> >
>
> This is the actual command and result:
>
> $ tar cf - /home/sw/Bilder/Nikon\ Transfer/20170430_Keukenhof/ | 7z a
> -t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on -v4880m -si
> Keukenhof_20170430.tar.7z
> tar: Removing leading / from absolute path names in the archive
>
> 7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
> p7zip Version 16.02 (locale=de_DE.UTF-8,Utf16=on,HugeFiles=on,64 bits,4
> CPUs x64)
>
> System ERROR:
> E_NOTIMPL
I ran the same command with a small 100MB test file, and didn't bump into
this either. I can guess that your large pipe is bumping up against a
limit. There's only one module where "System ERROR:" is produced:
CPP/7zip/UI/Console/MainAr.cpp. But it's a catch(). I can try to
reproduce but it will take me some time to prepare a test environment
large enough. You may be able to set a breakpoint there and obtain
a backtrace to determine the source of the error. That's what I will
do when I try to recreate with a 32GB test stream.
