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LVM2 mirror repository https://sourceware.org/lvm2/
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Zdenek Kabelac 7c9fd3ea84 Don't use floor() in _bitset_with_random_bits 
Use _even_rand() function instead of floor() in _bitset_with_random_bits().
floor() function is missing in dietlibc (on architectures other than x86).
Moreover using floor() to clip rand results does not assure even result
distribution. _even_rand() uses integer arithmetic only and is designed to
return evenly distributed results.

> Looks OK to me. It took a while to decipher what is the exact meaning of
> the loop in _even_rand (to a non-pseudorandomness-expert) but I am
> fairly comfortable with it now. If I understand this correctly, it
> rejects numbers that come from an "incomplete" slice of the RAND_MAX
> space (considering the number space [0, RAND_MAX] is divided into some
> "max"-sized slices and at most a single smaller slice, between [n*max,
> RAND_MAX] for suitable n -- numbers from this last slice are discarded
> because they could distort the distribution in favour of smaller
> numbers).

Signed-off-by: Przemyslaw Iskra <sparky <at> pld-linux.org>
Reviewed-by: Petr Rockai <prockai <at> redhat.com>
2010-10-13 12:18:53 +00:00
autoconf extended configure with --enable-profiling for compiling code with gcov info 2008-06-27 15:35:09 +00:00
daemons Add dm_zalloc and use it and dm_pool_zalloc throughout. 2010-09-30 21:06:50 +00:00
doc Make example.conf description for 'default_data_alignment' more generic. 2010-08-25 13:06:03 +00:00
include Refactor metadata.[ch] into lv.[ch] for lv functions. 2010-09-30 13:05:45 +00:00
lib Don't use floor() in _bitset_with_random_bits 2010-10-13 12:18:53 +00:00
libdm Add dm_zalloc and use it and dm_pool_zalloc throughout. 2010-09-30 21:06:50 +00:00
liblvm Add pv_uuid_dup, vg_uuid_dup, and lv_uuid_dup, and call id_format_and_copy. 2010-09-30 14:07:47 +00:00
man Implement vgextend --restoremissing (BZ 537913), which makes it possible to 2010-10-13 10:34:31 +00:00
old-tests Move tests from old-tests/regex to unit-tests/regex. unit-tests will 2010-07-20 15:18:57 +00:00
po INSTALL rules updates 2010-04-09 21:42:48 +00:00
report-generators add copyright notices to new files 2010-07-28 12:20:38 +00:00
reports [REPORT-GENERATORS] cut down stylsheet.css to what we actually use 2010-07-21 10:00:38 +00:00
scripts Add support for noninterctive shell execution 2010-10-08 15:02:05 +00:00
test Add a test for vgextend --restoremissing. 2010-10-13 10:36:26 +00:00
tools Implement vgextend --restoremissing (BZ 537913), which makes it possible to 2010-10-13 10:34:31 +00:00
udev Fix udev rules to support udev database content generated by older rules. 2010-08-12 13:41:18 +00:00
unit-tests [MM] Make valgrind aware of the pool allocators 2010-08-09 10:56:01 +00:00
configure Update configure after last change. 2010-08-23 13:44:31 +00:00
configure.in Don't use floor() in _bitset_with_random_bits 2010-10-13 12:18:53 +00:00
COPYING Outline docs 2001-12-31 16:12:40 +00:00
COPYING.LIB Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1. 2007-08-20 20:55:30 +00:00
INSTALL quick review of docs 2008-11-04 17:49:22 +00:00
make.tmpl.in Allow CC to be overridden at build time (for 'scan-build make'). 2010-10-07 16:33:34 +00:00
Makefile.in [MM] Make valgrind aware of the pool allocators 2010-08-09 10:56:01 +00:00
README quick review of docs 2008-11-04 17:49:22 +00:00
VERSION Speed up CRC32 calculations by using a larger lookup table. 2010-09-27 19:09:34 +00:00
VERSION_DM Speed up CRC32 calculations by using a larger lookup table. 2010-09-27 19:09:34 +00:00
WHATS_NEW Update WHATS_NEW. 2010-10-13 10:37:27 +00:00
WHATS_NEW_DM Speed up CRC32 calculations by using a larger lookup table. 2010-09-27 19:09:34 +00:00

README 

This tree contains the LVM2 and device-mapper tools and libraries.

For more information about LVM2 read the changelog in the WHATS_NEW file.
Installation instructions are in INSTALL.

There is no warranty - see COPYING and COPYING.LIB.

Tarballs are available from:
  ftp://sources.redhat.com/pub/lvm2/

To access the CVS tree use:
  cvs -d :pserver:cvs@sources.redhat.com:/cvs/lvm2 login
  CVS password: cvs
  cvs -d :pserver:cvs@sources.redhat.com:/cvs/lvm2 co LVM2

Mailing list for general discussion related to LVM2:
  linux-lvm@redhat.com
  Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm

Mailing list for LVM2 development, patches and commits:
  lvm-devel@redhat.com
  Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm

Mailing list for device-mapper development, including kernel patches
and multipath-tools:
  dm-devel@redhat.com
  Subscribe from https://www.redhat.com/mailman/listinfo/dm-devel