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Re: creating size-limited tar files

References (1 earlier) <509ab0fa$0$6636$9b4e6d93@newsspool2.arcor-online.net> <roy-2C9B4D.15322307112012@news.panix.com> <509AD812.2060605@gmail.com> <CAHVvXxTH7WrfT41GDj15f9FS4eguBF2dj4Khpu_vw2TWMkvPYg@mail.gmail.com> <CAF_E5JbY71J3ix9PiXu7wvvkzc_aG9ZtdwKkuxXXAU-SFeRDsw@mail.gmail.com>
Date 2012-11-08 10:29 +0000
Subject Re: creating size-limited tar files
From andrea crotti <andrea.crotti.0@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.3429.1352370578.27098.python-list@python.org> (permalink)

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2012/11/8 andrea crotti <andrea.crotti.0@gmail.com>:
>
>
>
> Yes yes I saw the answer, but now I was thinking that what I need is
> simply this:
> tar czpvf - /path/to/archive | split -d -b 100M - tardisk
>
> since it should run only on Linux it's probably way easier, my script
> will then only need to create the list of files to tar..
>
> The only doubt is if this is more or less reliably then doing it in
> Python, when can this fail with some bad broken pipe?
> (the filesystem is not very good as I said and it's mounted with NFS)

In the meanwhile I tried a couple of things, and using the pipe on
Linux actually works very nicely, it's even faster than simple tar for
some reasons..

[andrea@andreacrotti isos]$ time tar czpvf - file1.avi file2.avi |
split -d -b 1000M - inchunks
file1.avi
file2.avi

real	1m39.242s
user	1m14.415s
sys	0m7.140s

[andrea@andreacrotti isos]$ time tar czpvf total.tar.gz file1.avi file2.avi
file1.avi
file2.avi

real	1m41.190s
user	1m13.849s
sys	0m5.723s

[andrea@andreacrotti isos]$ time split -d -b 1000M total.tar.gz inchunks

real	0m55.282s
user	0m0.020s
sys	0m3.553s

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Thread

creating size-limited tar files andrea crotti <andrea.crotti.0@gmail.com> - 2012-11-07 17:13 +0000
  Re: creating size-limited tar files Neil Cerutti <neilc@norwich.edu> - 2012-11-07 18:40 +0000
  Re: creating size-limited tar files Alexander Blinne <news@blinne.net> - 2012-11-07 20:05 +0100
    Re: creating size-limited tar files Roy Smith <roy@panix.com> - 2012-11-07 15:32 -0500
      Re: creating size-limited tar files Andrea Crotti <andrea.crotti.0@gmail.com> - 2012-11-07 21:52 +0000
      Re: creating size-limited tar files Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2012-11-07 23:15 +0000
      Re: creating size-limited tar files andrea crotti <andrea.crotti.0@gmail.com> - 2012-11-08 10:11 +0000
      Re: creating size-limited tar files andrea crotti <andrea.crotti.0@gmail.com> - 2012-11-08 10:29 +0000
      Re: creating size-limited tar files andrea crotti <andrea.crotti.0@gmail.com> - 2012-11-09 10:39 +0000
      Re: creating size-limited tar files andrea crotti <andrea.crotti.0@gmail.com> - 2012-11-13 10:31 +0000
      Re: creating size-limited tar files Ian Kelly <ian.g.kelly@gmail.com> - 2012-11-13 09:07 -0700
      Re: creating size-limited tar files Ian Kelly <ian.g.kelly@gmail.com> - 2012-11-13 09:25 -0700
      Re: creating size-limited tar files Ian Kelly <ian.g.kelly@gmail.com> - 2012-11-13 09:30 -0700
      Re: creating size-limited tar files Kushal Kumaran <kushal.kumaran+python@gmail.com> - 2012-11-14 11:35 +0530
      Re: creating size-limited tar files Ian Kelly <ian.g.kelly@gmail.com> - 2012-11-14 00:22 -0700
      Re: creating size-limited tar files Kushal Kumaran <kushal.kumaran+python@gmail.com> - 2012-11-14 14:21 +0530
      Re: creating size-limited tar files andrea crotti <andrea.crotti.0@gmail.com> - 2012-11-14 11:52 +0000
      Re: creating size-limited tar files andrea crotti <andrea.crotti.0@gmail.com> - 2012-11-14 15:56 +0000
      Re: creating size-limited tar files Dave Angel <d@davea.name> - 2012-11-14 11:10 -0500
      Re: creating size-limited tar files andrea crotti <andrea.crotti.0@gmail.com> - 2012-11-14 16:16 +0000
  Re: creating size-limited tar files Dave Angel <d@davea.name> - 2012-11-14 11:33 -0500
  Re: creating size-limited tar files Andrea Crotti <andrea.crotti.0@gmail.com> - 2012-11-14 20:43 +0000
  Re: creating size-limited tar files Dave Angel <d@davea.name> - 2012-11-14 15:57 -0500

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