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From "Stefan Bodewig (JIRA)" <>
Subject [jira] [Commented] (COMPRESS-132) Add support for unix dump files
Date Tue, 16 Aug 2011 04:47:27 GMT


Stefan Bodewig commented on COMPRESS-132:

Later revisions have fixed some issues detected by findbugs, made some methods less public
or fixed javadocs, so it has changed quite a bit.

My initial attempt to run your testcase resulted in Java spinning in an infinite loop, I'll
investigate this further.

I tried to create a dump file on my Linux box - preferably one that has the same contents
as src/test/resources/bla.* in Compress' trunk source tree - but failed so far.  Cursory reading
of the manual page is obviously not enough to make it work.  Right now I don't know what to
make of

stefan@birdy:~/cc$ sudo dump -v -f bla.dump test1.xml test2.xml 
  DUMP: Date of this level 0 dump: Tue Aug 16 06:34:18 2011
  DUMP: Dumping /dev/sda6 (/home (dir /stefan/cc/test1.xml)) to bla.dump
  DUMP: Excluding inode 8 (journal inode) from dump
  DUMP: Excluding inode 7 (resize inode) from dump
  DUMP: Label: none
  DUMP: Writing 10 Kilobyte records
  DUMP: mapping (Pass I) [regular files]
/dev/sda6: File not found by ext2_lookup while translating .xml

> Add support for unix dump files
> -------------------------------
>                 Key: COMPRESS-132
>                 URL:
>             Project: Commons Compress
>          Issue Type: New Feature
>          Components: Archivers
>            Reporter: Bear Giles
>            Priority: Minor
>             Fix For: 1.3
>         Attachments:,, test-z.dump, test.dump
> I'm submitting a series of patches to the ext2/3/4 dump utility and noticed that the
commons-compress library doesn't have an archiver for it. It's as old as tar and fills a similar
niche but the later has become much more widely used. Dump includes support for sparse files,
extended attributes, mac os finder, SELinux labels (I think), and more. Incremental  dumps
can capture that files have been deleted.
> I should have initial support for a decoder this weekend. I can read the directory entries
and inode information (file permissions, etc.) but need a bit more work on extracting the
content as an InputStream.

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