Bug 201498

Summary:	tar cannot archive some files on ZFS with compression.
Product:	Base System	Reporter:	Shuichi KITAGUCHI <ki>
Component:	bin	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	Closed DUPLICATE
Severity:	Affects Some People	CC:	marcus
Priority:	---
Version:	CURRENT
Hardware:	Any
OS:	Any

Description Shuichi KITAGUCHI 2015-07-12 12:43:49 UTC

When I archive VirtualBox's VM directory on ZFS with compression,
tar seems to create incorrect archive.

I create plain Linux VM and archive on ZFS, but archive size is
very small and incorrect.

 % ls -l Linux/
 total 43
 -rw-------  1 kit  wheel        6883 Jul 12 21:11 Linux.vbox
 -rw-------  1 kit  wheel        6602 Jul 12 21:11 Linux.vbox-prev
 -rw-------  1 kit  wheel  8592031744 Jul 12 21:11 Linux.vdi
 % tar -cf Linux.tar Linux/
 a Linux
 a Linux/Linux.vdi
 a Linux/Linux.vbox
 a Linux/Linux.vbox-prev
 % ls -l Linux.tar
 -rw-r--r--  1 kit  wheel  280576 Jul 12 21:28 Linux.tar
 % tar tvf Linux.tar
 drwxr-xr-x  0 kit    wheel       0 Jul 12 21:11 Linux/
 -rw-------  0 kit    wheel 8592031744 Jul 12 21:11 Linux/Linux.vdi

I found GNU tar works fine, and bsdtar works correctly on UFS or
ZFS without compression.

I suppose that bsdtar uses compressed size to process, but I cannot
find what function has problem.

Comment 1 Marcus Reid 2015-07-12 21:36:25 UTC

This appears to be related to another bug that I submitted, which I think may have been fixed in upstream libarchive

  https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201506
  https://github.com/libarchive/libarchive/issues/464

Comment 2 Shuichi KITAGUCHI 2015-07-18 11:13:37 UTC

Thanks for information.
I close this PR because it is duplicated.

*** This bug has been marked as a duplicate of bug 201506 ***