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David Teigland ab27d5dc2a metadata: prevent writing beyond metadata area
lvm uses a bcache block size of 128K.  A bcache block
at the end of the metadata area will overlap the PEs
from which LVs are allocated.  How much depends on
alignments.  When lvm reads and writes one of these
bcache blocks to update VG metadata, it can also be
reading and writing PEs that belong to an LV.

If these overlapping PEs are being written to by the
LV user (e.g. filesystem) at the same time that lvm
is modifying VG metadata in the overlapping bcache
block, then the user's updates to the PEs can be lost.

This patch is a quick hack to prevent lvm from writing
past the end of the metadata area.
2018-10-29 16:46:03 -05:00
autoconf autoconf: Fix py-compile permissions 2016-02-18 01:05:05 +00:00
base radix-tree: fix some bugs in remove_prefix and iterate 2018-05-30 14:21:27 +01:00
conf clean-up: example.conf.in typo 2018-05-14 16:17:01 -05:00
coverity coverity: model few more functions 2017-06-27 12:17:16 +02:00
daemons dmeventd: lvm2 plugin uses envvar registry 2018-09-05 14:39:14 +02:00
device_mapper build: rename device-mapper to device_mapper 2018-05-12 18:18:23 +02:00
doc release note: typos 2018-05-24 12:32:16 +01:00
include build: configure detect libaio 2018-05-15 22:02:41 +02:00
lib metadata: prevent writing beyond metadata area 2018-10-29 16:46:03 -05:00
libdaemon tidy: Add missing underscores to statics. 2017-10-18 15:58:13 +01:00
libdm libdm: fix buffer overflow 2018-06-21 10:22:24 +02:00
liblvm liblvm2app: add a couple tests 2018-05-17 15:55:44 -05:00
man build: make generate 2018-07-31 17:41:35 +02:00
nix lockd: Clean up spec 2015-07-04 14:36:57 +02:00
po doc: change fsf address 2016-01-21 12:11:37 +01:00
python python: specify libdm path for linking 2018-05-15 22:02:41 +02:00
scripts scripts: add After=rbdmap.service to {lvm2-activation-net,blk-availability}.service 2018-09-05 14:41:55 +02:00
spec spec: Fix python and applib interactions 2018-10-29 16:48:42 +01:00
test tests: add new test for lvm on md devices 2018-10-18 12:36:11 -05:00
tools lvmetad: fix pvs for many devices 2018-08-27 14:39:49 -05:00
udev udev: keep systemd vars on change event in 69-dm-lvm-metad.rules for systemd reload 2018-04-17 11:38:12 +02:00
.gitignore gitignore 2018-05-23 16:53:18 +02:00
acinclude.m4 [build] uncomment 'serial 3' in an m4 file. 2018-04-30 09:44:27 +01:00
aclocal.m4 [lib/device/bcache] Tweaks after Kabi's review 2018-04-20 11:10:45 -05:00
configure dmeventd: base vdo plugin 2018-07-31 14:53:27 +02:00
configure.ac dmeventd: base vdo plugin 2018-07-31 14:53:27 +02:00
COPYING doc: change fsf address 2016-01-21 12:11:37 +01:00
COPYING.BSD Add BSD 2-Clause License 2018-07-27 17:09:03 +02:00
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 Revert "build: Calculate dependencies at same time as compiling." 2018-05-04 09:48:40 +01:00
Makefile.in build: lcov reporting for unit tests 2018-05-12 18:18:23 +02:00
README README: Include new github links 2017-09-13 20:20:04 +01:00
TESTING docs: Add TESTING file 2017-12-14 16:45:47 +01:00
VERSION post-release 2018-08-02 08:08:34 +02:00
VERSION_DM post-release 2018-08-02 08:08:34 +02:00
WHATS_NEW lvconvert: fix interim segtype regression on raid6 conversions 2018-09-10 11:21:02 +02:00
WHATS_NEW_DM dmeventd: lvm2 plugin uses envvar registry 2018-09-05 14:39:14 +02:00

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://sourceware.org/pub/lvm2/
  ftp://sources.redhat.com/pub/lvm2/
  https://github.com/lvmteam/lvm2/releases

The source code is stored in git:
  https://sourceware.org/git/?p=lvm2.git
  git clone git://sourceware.org/git/lvm2.git
mirrored to:
  https://github.com/lvmteam/lvm2
  git clone https://github.com/lvmteam/lvm2.git
  git clone git@github.com:lvmteam/lvm2.git

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

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

  lvm2-commits@lists.fedorahosted.org (Read-only archive of commits)
  Subscribe from https://fedorahosted.org/mailman/listinfo/lvm2-commits

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

Website:
  https://sourceware.org/lvm2/

Report upstream bugs at:
  https://bugzilla.redhat.com/enter_bug.cgi?product=LVM%20and%20device-mapper
or open issues at:
  https://github.com/lvmteam/lvm2/issues

The source code repository used until 7th June 2012 is accessible here:
  http://sources.redhat.com/cgi-bin/cvsweb.cgi/LVM2/?cvsroot=lvm2.