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Ritika Srivastava c8487d854b lsblk: Ignore hidden devices
Lsblk throws the following error for nvmeNcXnY devices.

lsblk: nvme1c1n1: unknown device name

This is because nvmeNcXnY devices are hidden and do not have
the file /sys/block/<nvmeNcXnY>/dev.

Following patch was added
https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=d51f05bfecb299a830897106460bf395be440c0a
Which made lsblk read from /sys/block/<nvmeNcXnY>/device/dev
which do exist for nvmeNcXnY devices.

After the above patch, the unknown error goes away.
However, another error is encountered in the very next step.

nvme1c1n1: failed to initialize sysfs handler

This is because lsblk looks for /sys/dev/block/242:1
(nvmeNcXnY major:minor) pathname which usually exists for other
block devices but not for the nvmeNcXnY devices as they are hidden.

Below patch does not even print this error for hidden devices
and exits silently.

[kzak@redhat.com: - add prefix to make sysfs_devname_is_hidden()
                    usable for  /sys dumps
                  - use the function in initialize_device() more early]

Signed-off-by: Ritika Srivastava <ritika.srivastava@oracle.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
2020-05-14 15:48:26 +02:00
Documentation docs: add rev(1) to TODO 2020-03-09 11:07:48 +01:00
bash-completion bash-completion: umount explicitly needs gawk 2020-04-29 12:27:14 +02:00
config build-sys: gtkdoc-fixxref v1.27 requires module option 2018-02-01 13:23:40 +01:00
disk-utils sfdisk: avoid unneeded empty lines with '--list-free' 2020-05-12 10:09:46 +02:00
include lsblk: Ignore hidden devices 2020-05-14 15:48:26 +02:00
lib lsblk: Ignore hidden devices 2020-05-14 15:48:26 +02:00
libblkid libblkid: fix fstatat() use in blkid__scan_dir() 2020-05-12 09:16:49 +02:00
libfdisk libfdisk: fix partition calculation for BLKPG_* ioctls 2020-05-06 13:32:46 +02:00
libmount libmount: fix mount -a EBUSY for cifs 2020-04-27 15:46:02 +02:00
libsmartcols libsmartcols: don't calculate with encoding on scols_table_enable_noencoding() 2020-04-22 12:24:33 +02:00
libuuid [clang-tidy] do not use else after return 2020-04-20 13:20:59 -07:00
login-utils login: keep default MOTD_FILE= backwardly compatible 2020-05-12 15:37:39 +02:00
m4 build-sys: add missing NR underscore to UL_CHECK_SYSCALL() 2019-11-25 20:33:05 +00:00
misc-utils lsblk: Ignore hidden devices 2020-05-14 15:48:26 +02:00
po po: update uk.po (from translationproject.org) 2020-01-22 20:52:11 +02:00
schedutils chrt: Use sched_setscheduler system call directly 2020-01-30 10:45:32 +01:00
sys-utils docs: add swap to 1st fstab field 2020-05-04 11:44:03 +02:00
term-utils scriptlive: fix typo 2020-05-05 14:37:56 +02:00
tests tests: Fix for misc/fallocate test build failure. 2020-05-06 15:14:48 +02:00
text-utils more: make page and arrow up/down to update view 2020-05-12 10:22:09 +02:00
tools build-sys: add --with-cryptsetup to config-gen.d/all.conf 2019-12-05 14:57:50 +01:00
.editorconfig add .editorconfig 2016-01-25 00:12:14 +01:00
.gitignore lsirq: add new command 2020-03-06 16:21:10 +01:00
.travis-functions.sh travis: fix sudo command line 2019-12-16 14:29:33 +01:00
.travis.yml docs: add info about branches; update travis.yml 2018-10-24 13:02:59 +02:00
AUTHORS docs: update AUTHORS file 2020-01-21 11:07:27 +01:00
COPYING docs: corrections to FSF license files, and postal address 2012-02-24 14:13:35 +01:00
ChangeLog docs: Correct ChangeLog URL to history log. 2020-05-11 09:48:43 +02:00
Makefile.am getopt: use examples installation directory in man page 2020-02-15 15:24:01 +00:00
NEWS build-sys: release++ (v2.35) 2020-01-21 11:15:21 +01:00
README docs: add link to mail list archive 2018-12-17 10:16:22 +01:00
README.licensing docs: add GPLv3 text 2019-11-08 11:10:54 +01:00
autogen.sh build-sys: improve bison version detection 2018-04-30 09:43:32 +02:00
configure.ac more: use libmagic to identify binary files 2020-05-12 10:22:09 +02:00
util-linux.doap docs: replace FTP by HTTPS in kernel.org URLs 2016-12-19 11:22:26 +01:00

README

				  util-linux

		util-linux is a random collection of Linux utilities

     Note: for the years 2006-2010 this project was named "util-linux-ng".

MAILING LIST:

      E-MAIL:  util-linux@vger.kernel.org
      URL:     http://vger.kernel.org/vger-lists.html#util-linux
      ARCHIVE: https://lore.kernel.org/util-linux/

      The mailing list will reject email messages that contain:
       - more than 100K characters
       - html
       - spam phrases/keywords
      See: http://vger.kernel.org/majordomo-info.html#taboo

IRC CHANNEL:

      #util-linux at freenode.net:

      irc://chat.freenode.net/util-linux

      The IRC channel and Mailing list are for developers and project
      maintainers. For end users it is recommended to utilize the
      distribution's support system.

BUG REPORTING:

      E-MAIL: util-linux@vger.kernel.org
      Web:    https://github.com/karelzak/util-linux/issues

      This project has no resources to provide support for distribution specific
      issues. For end users it is recommended to utilize the distribution's
      support system.

NLS (PO TRANSLATIONS):

      PO files are maintained by:
	  http://translationproject.org/domain/util-linux.html

VERSION SCHEMA:

      Standard releases:
	  <major>.<minor>[.<maint>]
	     major = fatal and deep changes
	     minor = typical release with new features
	     maint = maintenance releases; bug fixes only

      Development releases:
	 <major>.<minor>-rc<N>

SOURCE CODE:

 Download archive:
	  https://www.kernel.org/pub/linux/utils/util-linux/

 SCM (Source Code Management) Repository:

    Primary repository:
	  git clone git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git

    Backup repository:
	  git clone git://github.com/karelzak/util-linux.git

    Web interfaces:
	  http://git.kernel.org/cgit/utils/util-linux/util-linux.git
	  https://github.com/karelzak/util-linux

      Note: the GitHub repository may contain temporary development branches too.

      The kernel.org repository contains master (current development) and stable/*
      (maintenance) branches only. All master or stable/* changes are always pushed
      to both repositories at the same time.

    Repository Branches: 'git branch -a'
	  master branch
	   - current development
	   - the source for stable releases when deemed ready.
	   - day-to-day status is: 'it works for me'. This means that its
	     normal state is useful but not well tested.
	   - long-term development or invasive changes in active development are
	     forked into separate 'topic' branches from the tip of 'master'.

	  stable/ branches
	   - public releases
	   - branch name: stable/v<major>.<minor>.
	   - created from the 'master' branch after two or more release
	     candidates and the final public release. This means that the stable
	     releases are committed, tagged, and reachable in 'master'.
	   - these branches then become forked development branches. This means
	     that any changes made to them diverge from the 'master' branch.
	   - maintenance releases are part of, and belong to, their respective
	     stable branch. As such, they are tags(<major>.<minor>.<maint>) and
	     not branches of their own. They are not part of, visible in, or
	     have anything to do with the 'master' development branch. In git
	     terminology: maintenance releases are not reachable from 'master'.
	   - when initially cloned (as with the 'git clone' command given above)
	     these branches are created as 'remote tracking branches' and are
	     only visible by using the -a or -r options to 'git branch'. To
	     create a local branch use the desired tag with this command:
	     'git checkout -b v2.29.2 v2.29.2'

    Tags: 'git tag'
	   - a new tag object is created for every release.
	   - tag name: v<version>.
	   - all tags are signed by the maintainer's PGP key.

    Known Bugs:
	- don't use tag v2.13.1 (created and published by mistake),
	  use v2.13.1-REAL instead.

WORKFLOW EXAMPLE:

 1) development (branch: <master>)

 2) master release (tags: v2.29-rc1, v2.29-rc2, v2.29, branch: <master>)

 3) development (work on v2.30, branch: <master>)

 4) fork -- create a new branch <stable/v2.29> based on tag v2.29

     4a) new patches or cherry-pick patches from <master> (branch: <stable/v2.29>)

     4b) stable release (tag: v2.29.1, branch: <stable/v2.29>)

     4c) more patches; another release (tag: v2.29.2, branch: <stable/v2.29>)

 5) master release v2.30 (branch: <master>)
    ...

where 3) and 4) happen simultaneously.