Now that /run seems to be a good standard, make that
the default for storing various run-time files, rather than
/var/run or /dev/.mdadm.
Signed-off-by: NeilBrown <neilb@suse.de>
Both --detail and --monitor can report the names of member
devices on an array, and do so by searching /dev and finding
the shortest name that matches.
If
--prefer=foo
is given, they will instead prefer a name that contain /foo/.
So
mdadm --detail /dev/md0 --prefer=by-path
will list the component devices via their /dev/disk/by-path/xxx
names.
Signed-off-by: NeilBrown <neilb@suse.de>
manpage for mdadm(8) contains typo - missing "d" at the end of "describe" word.
Signed-off-by: Roman Ovchinnikov <coolthecold@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
When --offroot is specified, mdadm will change the first character of
argv[0] to '@'. This is used to signal to systemd that mdadm was
launched from initramfs and should not be shut down before returning
to the initramfs.
Acked-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Patch adds to mdadm man the following information:
--continue
This option is complementary pair to assembly --freeze-reshape option.
It is needed when --grow operation is interrupted and it is not restarted
automatically due to --freeze-reshape usage during array assembly.
Option --continue has to be used together with -G , ( --grow ) command
and device that it should be executed on. All parameters required for
reshape continuation will be read from array metadata. If initial
--grow command had required --backup-file= option to be set,
continuation option will require to have exactly the same backup
file pointed to also.
Any other parameter passed together with --continue option will be ignored.
Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Patch adds to mdadm man the following information:
--freeze-reshape
Option is intended to be used in start-up scripts during initrd boot
phase. When array under reshape is assembled during initrd phase,
this option stops reshape after reshape critical section is being
restored. This happens before file system pivot operation and avoids lost
of file system context. Loosing file system context would cause
reshape to be broken.
Reshape can be continued later using -continue option for grow command.
Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This set the metadata to 1.2, not 1.0.
When the default was changed to 1.2 I forgot to update this part of
the man page.
Bug-Debian: http://bugs.debian.org/607375
Signed-off-by: NeilBrown <neilb@suse.de>
- explain it's use in guarding against small replacements
- clarify relationship with containers.
- include information about --grow --size not being supported by IMSM metadata.
Reported-by: maciej.naruszewicz <maciej.naruszewicz@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Fix random typos and add a few of missing words/macros.
Also update RAID website URL as it is not accessible anymore.
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
It is supposed to be under Grow mode. Since Create/Build/Grow modes
use common options and '-a' is already used for '--auto' in Create/
Build modes, describe it to avoid confusion.
Signed-off-by: NeilBrown <neilb@suse.de>
When an array is resized to have larger members, --assume-clean will
disable any resync if the kernel supports it (2.6.40 and later).
Signed-off-by: NeilBrown <neilb@suse.de>
RAID0 has accepted chunksizes that are not a power of 2 since 2.6.30.
So it time mdadm allowed that to be used.
Signed-off-by: NeilBrown <neilb@suse.de>
This was #if-ed out for 3.0, but it really should go.
Gcc 4.6.0 complains that auto_update_home is set but not used
(which is true).
Reported-by: Tobias Powalowski <t.powa@gmx.de>
Add note to man that auto-assembly cannot be used for reshaped arrays.
Revisions: NeilBrown
Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Update man for MDADM_EXPERIMENTAL flag.
Minor revisions by Mathias Burén <mathias.buren@gmail.com> and Neil Brown.
Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Suggesting by Rory Jaffe <rsjaffe@gmail.com> to make the danger
of shrinking, and to recommended avoidance technique, more explicit.
Signed-off-by: NeilBrown <neilb@suse.de>
Before resizing an array with --size or --array-size, then filesystem
should be resized. mdadm cannot do this so the user should.
Reported-by: Gavin Flower <gavinflower@yahoo.com>
Signed-off-by: NeilBrown <neilb@suse.de>
We somehow got to version of documentation for --array-size.
So merge them it one.
Reported-by: Ville Skyttä <ville.skytta@iki.fi>
Signed-off-by: NeilBrown <neilb@suse.de>
Before resizing an array with --size or --array-size, then filesystem
should be resized. mdadm cannot do this so the user should.
Reported-by: Gavin Flower <gavinflower@yahoo.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Includes description of POLICY line in /etc/mdadm.conf
and of changes in Monitor and Incremental related to autorebuild.
Signed-off-by: Anna Czarnowska <anna.czarnowska@intel.com>
Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This is useful with 1.1 and 1.2 metadata to update the metadata if
the device size has changed.
The same functionality can be achieved by writing to the device size
in sysfs after re-adding normally, but in some cases this might be
easier.
Signed-off-by: NeilBrown <neilb@suse.de>
Though not having the proper backup file can cause data corruption, it
is not enough to justify not being able to start the array at all.
So allow "--invalid-backup" to be specified which says "just continue
even if a backup cannot be restored".
Signed-off-by: NeilBrown <neilb@suse.de>
We already allow K,M,G suffixes for --size and --array-size.
Allow it for --chunk and --bitmap-chunk as well.
Also add this info to man page, and remove the duplication of info
about --array-size.
Signed-off-by: NeilBrown <neilb@suse.de>
- other differences between 0.90 and 1.x metadata explained
- reshape text enhanced to properly acknowledge shrinks and in-place
reshapes, particularly in the context of --backup-file.
Signed-off-by: NeilBrown <neilb@suse.de>
If the device name "missing" is given for --re-add, then mdadm will
attempt to find any device which should be a member of the array but
currently isn't and will --re-add it to the array.
This can be useful if a device disappeared due to a cabling problem,
and was then re-connected.
The appropriate sequence would be
mdadm /dev/mdX --fail detached
mdadm /dev/mdX --remove detached
mdadm /dev/mdX --re-add missing
Signed-off-by: NeilBrown <neilb@suse.de>
This can be used for hot-unplug. When a device has been remove,
udev can call
mdadm --incremental --fail sda
and mdadm will find the array holding sda and remove sda from
the array.
Based on code from Doug Ledford <dledford@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
In some places it is referred to as "--rebuild", and while
that works due to getopt allowing prefixes, it could appear
confusing (rebuild means other things too) and being explicit
is some safeguard if we want to add e.g. --rebuild-foo later.
Reported-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit introduces DEFAULT_OLD_METADATA as a preprocessor
definition. If defined, it causes mdadm to assume metadata version 0.9
as default. If not defined, version 1.x (currently 1.2) is used as
default.
The man page mdadm.8 is also modified to reflect the chosen default.
The selftests will not work if the old default is chosen.
This patch was requested by Debian so they could distribute a current
mdadm together with boot loaders that only understand 0.90 metadata
for md-raid.
Preferred usage is simply
make DEFAULT_OLD_METADATA=yes
Signed-off-by: martin f. krafft <madduck@debian.org>
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown
CoolCold
Jes Sorensen
Adam Kwolek
Namhyung Kim
Przemyslaw Czarnowski
John Robinson
Dan Williams
martin f. krafft