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David Teigland 7497bca317 lvreduce: check for file system that cannot be reduced
Add a new command line option --detectfs y|n, along with
the capability to detect if the LV contains a shrinkable
file system (using libblkid).

The new fs detection is performed by default to avoid
acccidental data loss by users who reduce an LV without
knowing that the file system cannot be reduced, or without
including the --resizefs option to reduce the reducible fs.
The new errors reported for these cases are:

$ lvreduce -L64M --detectfs y vg/lv
  Detected file system type xfs that cannot be reduced (from --detectfs).

$ lvreduce -L64M --detectfs y vg/lv
  Detected file system type ext4 that can be reduced (see --resizefs).

When detectfs is enabled, the lvreduce command will activate
the LV to check the fs type.

Using --detectfs n results in the same historical (and
somewhat dangerous) lvreduce behavior.
2021-05-05 11:01:21 -05:00
autoconf autoconf: Fix py-compile permissions 2016-02-18 01:05:05 +00:00
base hash: replace hash with better function 2021-03-08 15:33:15 +01:00
conf make: generate 2021-04-23 23:02:58 +02:00
coverity cov: drop model for origin_from_cow 2020-09-12 13:23:49 +02:00
daemons clang: avoid possible use-after-free 2021-04-23 23:00:55 +02:00
device_mapper clang: always initialized values 2021-04-23 23:00:55 +02:00
doc all: fix typos 2021-03-30 13:08:14 +02:00
include configure: support builds without versioning 2021-03-30 13:06:19 +02:00
lib lvreduce: check for file system that cannot be reduced 2021-05-05 11:01:21 -05:00
libdaemon daemon-server: handle reaping threads better 2021-04-06 21:26:57 +02:00
libdm clang: always initialized values 2021-04-23 23:00:55 +02:00
man make: generate 2021-04-23 23:02:58 +02:00
nix lockd: Clean up spec 2015-07-04 14:36:57 +02:00
po makefiles: fix pofile generation 2021-03-02 22:54:40 +01:00
scripts shellcheck: updates 2021-04-23 23:00:55 +02:00
spec device usage based on devices file 2021-02-23 16:43:32 -06:00
test tests: use should for expected state 2021-04-23 23:00:55 +02:00
tools lvreduce: check for file system that cannot be reduced 2021-05-05 11:01:21 -05:00
udev udev rule: remove lvmetad comments 2020-11-25 16:57:54 -06:00
.gitignore git: update .gitignore 2021-03-19 23:21:18 +01:00
acinclude.m4 [build] uncomment 'serial 3' in an m4 file. 2018-04-30 09:44:27 +01:00
aclocal.m4 configure: update 2020-12-11 12:16:16 +01:00
configure man: with internal build install cache, thin, vdo 2021-04-19 14:37:08 +02:00
configure.ac man: with internal build install cache, thin, vdo 2021-04-19 14:37:08 +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 17:09:46 +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 makefiles: add devmapper for devmapper-event 2021-04-12 10:35:55 +02:00
Makefile.in makefiles: reuse CSCOPE_DIRS for ctags 2021-04-12 09:54:16 +02:00
README Update README 2020-08-12 12:05:36 +02:00
TESTING docs: Add TESTING file 2017-12-14 16:45:47 +01:00
VERSION post-release 2021-01-08 10:08:36 +01:00
VERSION_DM post-release 2021-01-08 10:08:36 +01:00
WHATS_NEW lvmcache: fix memory leak 2021-04-23 22:54:41 +02:00
WHATS_NEW_DM WHATS_NEW: updates 2021-04-12 09:54:16 +02:00

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

This is development branch, for stable 2.02 release see stable-2.02 branch.

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/
  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 using CVS:

  cvs -d :pserver:cvs@sourceware.org:/cvs/lvm2 login cvs
  cvs -d :pserver:cvs@sourceware.org:/cvs/lvm2 checkout LVM2

The password is cvs.