Changes Prior to this release
+ - Support 'mailfrom' line in mdadm.conf so the From: line in alert
+ emails can be explicitly set.
+ - Arrange that SparesMissing (which is similar in import to
+ DegradedArray) generates an Email.
+ - Assume "DEVICE partitions" if no DEVICE line is given.
+ - Support new 'offset' layout for raid10.
+ - When creating a bitmap file, choose a chunksize to limit number
+ of bitmap chunks to 2 million. More than this can cause kmalloc
+ failure.
+ - New 'CREATE' line in mdadm.conf for defaults such as owner, group,
+ mode and auto-flag
+ - --detail checks if array has been started or not and includes that
+ in report.
+ - When using --update=uuid on an array with a bitmap, update the
+ bitmap's uuid too.
+ - Add a copy of /proc/mdstat to the mail message send by mdadm
+ --monitor.
+ - New flag --no-degraded to avoid starting arrays if there are
+ fewer devices available than last time the array was started.
+ This is only needed with --scan, as with --scan, that behaviour
+ is the default.
+
+Changes Prior to 2.4.1 release
+ - Honour --write-mostly when adding to an array without persistent
+ superblocks.
+ - Fix alignment problem in version-1 superblocks.
+ NOTE: This is an incompatable change affecting raid5 reshape.
+ If you want to reshape a raid5 using version-1 superblocks,
+ use 2.6.17-rc2 or later, and mdadm-2.4.1 or later.
+
+Changes Prior to 2.4 release
+ - Rewrite 'reshape' support including performing a backup
+ of the critical region for a raid5 growth, and restoring that
+ backup after a crash.
+ - Put a 'canary' at each end of the backup so a corruption
+ can be more easily detected.
+ - Remove useless 'ident' arguement from ->getinfo_super method.
+ - Support --backup-file for backing-up critical section during
+ growth.
+ - Erase old superblocks (of different versions) when creating new
+ array.
+ - Allow --monitor to work with arrays with >28 devices
+ - Report reshape information in --detail
+ - Handle symlinks in /dev better
+ - Fix mess in --detail output which a device is missing.
+ - Manpage tidyup
+ - Support 'bitmap=' in mdadm.conf for auto-assembling arrays with
+ write-intent bitmaps in separate files.
+ - Updates to md.4 man page including section on RESTRIPING and SYSFS
+
+Changes Prior to 2.3.1 release
+ - Fixed -O2 compile so I could make and RPM.
+ - Type cast number to be printed %llu so it compiles on 64bit
+ machines. (Thanks Luca).
+ - Stop using asm/byteorder.h - to make Redhat happy :-(
+ - Require bitmap files to have a '/' in their name.
+ - Error-check a few syscalls - code from SuSE package.
+
+Changes Prior to 2.3 release
+ - Try /etc/mdadm/mdadm.conf if /etc/mdadm.conf doesn't exist.
+ This provided compatability for Debian.
+ - Fixed for version-1 superblock:
+ report chunksize for raid6 and raid10
+ make sure device size used is a multiple of chunksize
+ - Fix "--assemble --scan" crash.
+ - Fix completely failure to create array on ppc64
+ - Fix memcmp in place of memcpy
+ - A few minor improvements to online help
+ - Clean up usage of 'long long' for used-size of devices, so
+ that it is possible to create a raid1 of 7TB devices!
+ - Make internal bitmaps work on 7TB raid1 arrays.
+ - Provide error message if --examine doesn't find any superblock.
+ - Report 'reshape' status in --examine - this depends on kernel
+ patches that are not yet finalised.
+ - Report bitmap status in --detail and --examine
+ - Default to v1 superblocks instead of v0.90 if the array
+ is too big for 0.90 to handle.
+ - Sort the output of "mdadm --detail --scan" so that it is
+ in a suitable order for assembling arrays. i.e. components come
+ before an array that they are part of.
+ - Print size of large reiserfs array properly went warning of
+ possible confilcts.
+
+Changes Prior to 2.2 release
+ - Assorted bug fixes
+ - Support write-intent-bitmaps on raid10
+ - Support little-endian (Rather than hostendian) bitmaps.
+ - Return correct error code from 'mdadm -S'
+ - Remove extra blank line from 'mdadm -Eb' output.
+ - Improve option parsing so that -a and -b do not have
+ optional arguements: the arg is either required or not
+ depending on context.
+ - Allow scanning of devices listed in /proc/partitions even
+ if they don't appear in /dev.
+ - Support --assume-clean in --create mode as well as --build
+ - Add support for --monitor to report to syslog: -y or --syslog.
+ Thanks to Ross Vandegrift
+ - --monitor now reports which device failed in a 'Fail' message
+ This broke with 2.6
+ - Improve chance of array starting properly after a crash.
+ mdadm was insisting the event numbers were identical, but this
+ isn't needed, and is a problem if the crash was while the metadata
+ was being updated.
+ - Support --update==uuid
+ - Added README.initramfs and mkinitramfs to help people use an
+ initram for starting md arrays at boot.
+
+Changes Prior to 2.1 release
+ - Fix assembling of raid10 array when devices are missing.
+ mdadm now correctly detects if a array is workable or not
+ depending on which devices are present, and so will correctly
+ handle "--assemble --force" if multiple devices have failed.
+ - Report raid10 layout in --examine output.
+ - Fix assembling of arrays that use the version-1 superblock and
+ have spares. Previously the spares would be ignored.
+ - Fix bug so that multiple drives can be re-added at once.
+ - Fix problem with hot-adding a bitmap to version-1-superblock
+ arrays.
+
+Changes Prior to 2.0
+ - Support assembling from byte-swapped superblocks
+ metadata type "0.swap" and --update=byteorder
+ - write-mostly and write-behind support for raid1.
+ - Support --name= and 'name=' config entry for identifying
+ arrays be name.
+ - RAID10 in man pages.
+ - Lot of minor manpage updates
+
+Changes Prior to 2.0-devel-3 release
+ - Assorted fixes for multiple bugs...
+ - Add test suite
+
+Changes Prior to 1.12.0 release
+ Several of these are backported from the Debian package
+ - Don't use 'lstat' to check for blockdevices, use stat.
+ - Document --size=max option for --grow
+ - Document SparesMissing event and DeviceDisappeared/WrongLevel
+ - --stop --scan repeatly cycles until no more progress can be made
+ so that stack devices are stopped properly
+ - Minor type rationalisation for ident->uuid - now always 'int[]'
+ - Fix type in online help for --grow (was -F, now -G)
+ - Allow --auto command line option to set default auto=
+ value when running "--assemble --scan". Previously
+ --auto was ignored if --scan was given
+ - Fix a few type casts
+ - Fix parsing of /dev/md/N in is_standard
+ - Fix rounding errors in human_size()
+ - Fix silly example in mdadm.conf-examples
+ - When finding a /dev name for a device, prefer shorter names
+ - Suppress listing of devices= in --brief output of -D or -E,
+ unless -v is given (-vv gives the old behaviour with -Dsv).
+ This is because the device list can change and so is not a
+ stable aspect of the array
+ - Allow --force with --grow so '-Gfn1' works (on raid1)
+ - Replace sprintf calls with snprintf (to quiet diet-libc)
+ - Add man page for mdassemble
+ - Fix compilation with tinyc
+
+Changes Prior to 1.11.0 release
+ - Fix embarassing bug which causes --add to always fail.
+
+Changes Prior to 1.10.0 release
+ - Fix bug with --config=partitions
+ - Open sub-devices with O_EXCL to detect if already in use
+ - Make sure superblock updates are flushed directly to disk.
+
+Changes Prior to 2.0-devel-1 release
+ - Support for version-1 superblock. See --metadata option.
+ - Support for bitmap based intent logging.
+ - Minor fixes.
+
+Changes Prior to 1.9.0 release
+ - Fix rpm build problem (stray %)
+ - Minor manpage updates
+ - Change "dirty" status to "active" as it was confusing people.
+ - --assemble --auto recognises 'standard' name and insists on using
+ the appropriate major/minor number for them.
+ - Remove underscore from partition names, so partitions of
+ "foo" are "foo1", "foo2" etc (unchanged) and partitions of
+ "f00" are "f00p1", "f00p2" etc rather than "f00_p1"...
+ - Use "major", "minor", "makedev" macros instead of
+ "MAJOR", "MINOR", "MKDEV" so that large device numbers work
+ on 2.6 (providing you have glibc 2.3.3 or later).
+ - Add some missing closes of open file descriptors.
+ - Reread /proc/partition for every array assembled when using
+ it to find devices, rather than only once.
+ - Make "mdadm -Ss" stop stacked devices properly, by reversing the
+ order in which arrays are stopped.
+ - Improve some error messages.
+ - Allow device name to appear before first option, so e.g.
+ mdadm /dev/md0 -A /dev/sd[ab]
+ works.
+ - Assume '-Q' if just a device is given, rather than being silent.
+ - Change "dirty" status to "active" as it was confusing people.
+
+Changes Prior to 1.8.0 release
+ - Makefile cleanup from Luca Berra <bluca@comedia.it>
+ - --pid-file (-i) to set a pid file to use with --monitor --daemonise
+ - Fix typo in mdadm man page
+ - Fix coredump when "-s" used with no config file present.
+ - Support new "faulty" personality which can inject synthetic
+ faults. (Not in kernel.org yet at 1Nov2004)
+ - Support raid0/linear on devices > 2 Terabytes
+ - Make sure raid6 resyncs when created with one missing device
+
+Changes Prior to 1.7.0 release
+ - Support "--grow --add" to add a device to a linear array, if the
+ kernel supports it. Not documented yet.
+ - Restore support for uclibc which was broken recently.
+ - Several improvements to the output of --detail, including
+ reporting "resyncing" or "recovering" in the state.
+ - Close filedescriptor at end of --detail (exit would have closed it
+ anyway, so this isn't abig deal).
+ - Report "Sync checkpoint" in --examine output if appropriate.
+ - Add --update=resync for --assemble mode to for a resync when the
+ array is assembled.
+ - Add support for "raid10", which is under development in 2.6.
+ Not documented yet.
+ - --monitor now reads spare-group and spares info from config file
+ even when names of arrays to scan are given on the command line
+
+Changes Prior to 1.6.0 release
+ - Device name given in -Eb is determined by examining /dev rather
+ than assuming /dev/md%d
+ - Fix bug in --monitor where an array could be held open an so
+ could not be stopped without killing mdadm.
+ - Add --grow mode. Currently only --size and --raid-disks can be
+ changed. Both require kernel support which, at the time of
+ writing, is not in a release kernel yet.
+ - Don't print out "errors" or "no-errors" in -D and -E, as the bit
+ is never set or used.
+ - Use md event notification in 2.6.??? to make --monitor mode
+ respond instantly to events.
+ - Add --auto= option and auto= configfile entry to tell mdadm to
+ create device files as needed. This is particularly useful
+ with partitioned arrays where the major device number can change.
+ - When generating --brief listing, if the standard name doesn't
+ exist, search /dev for one rather than using a temp name.
+ - Allow --build to build raid1 and multipath arrays.
+ - Add "--assume-clean" for Create and Build, particularly for raid1
+ Note: this is dangerous. Only use it if you are certain.
+ - Fix bug so that Rebuild status monitoring works again.
+ - Add "degraded" and "recovering" options to the "Status:"
+ entry for --detail
+
+Changes Prior to 1.5.0 release
+ - new commands "mdassemble" which is a stripped-down equivalent of
+ "mdadm -As", that can be compiled with dietlibc.
+ Thanks to Luca Berra <bluca@comedia.it>.
+ It can be using in an initramfs or initrd.
+ - Fix compiling error with BLKGETSIZE64 and some signed/unsigned
+ comparison warnings.
+ - Add Rebuild Status (% complete) to --detail output.
+ - Support "--monitor --test" which will generate a test alert
+ for each array once, to test notification paths.
+ - Generate RebuildFinished event when rebuild finishes.
+ - Support for raid6 as found in 2.6.2 - thanks to
+ H. Peter Anvin <hpa@zytor.com>
+ - Support partitioned md arrays with a different major number and
+ naming scheme (md_dX in /proc/mdstat, /dev/md/dXpY in /dev).
+
+Changes Prior to 1.4.0 release
+ - Document fact that creating a raid5 array really creates a
+ degraded array with a spare.
+ - Add "spares=" tag to config file and generate it wit --detail and
+ --examine
+ - Add "SparesMissing" event when --monitor first sees an array and
+ it doesn't have the enough spare devices.
+ - Add --update=summaries for --assemble to update summary
+ information in superblock, and correct other inconsistancies in
+ the superblock.
+ - Add --test option to --detail to set a meaningful exit status.
+
+Changes Prior to 1.3.0 release
+ - Make 'size' and unsigned long in Create to allow creation of
+ larger arrays.
+ - Explicitly flag spare devices as 'spare' in --detail and --examine
+ output. Previously they simply had no flags lists.
+ - Make MailCmd (for monitor) configurable in Makefile, and default
+ to "/usr/sbin/sendmail -t". Also split out the warning related
+ flags into CWFLAGS for easier build configurability.
+ - Minor bugfix in Manage code.
+ - --monitor now notices and reports degraded arrays at startup using
+ "DegradedArray" event, and also has a --oneshot option to only
+ report DegradedArrays, and then exit.
+ - Small man-page clarification w.r.t. raid levels and raid4 in
+ particular.
+ - Disallow creation of arrays with only one device as this is
+ probably a mistake. --force will override this check.
+ - Correct some misleading documentation in the "mdadm --create --help"
+ message.
+ - Ignore chunksize if raid1 or multipath.
+ - Explicit statement in man page that raid-disks cannot be changed
+ after array is created.
+ - Improve message when attempting to start an array with
+ insufficient devices. Instead of required the array to be full,
+ we only require it has as many active devices as last time.
+
+Changes Prior to 1.2.0 release
+ - Fix bug where --daemonise required an argument.
+ - In --assemble --verbose, print appropriate message if device is
+ not in devices= list
+ - Updated mdadm.conf.5 to reflect fact that device= takes wildcards
+ - Typos: componenet -> component
+ - Reduce size of "--help" message put excess into "--help-options"
+ - Fix bug introduced when MD_SB_DISKS dependancy removed, and which
+ caused spares not be assembled properly.
+ - Print appropriate message if --monitor --scan decides not to
+ monitor anything.
+Changes Prior to 1.1.0 release
+ - add --deamonise flag for --monitor - forks and prints pid to stdout
+ - Fix bug so we REALLY clear dirty flag with -Af
+ - -Db now prints a 'devices=' word for each array.
+ - "mdadm -A /dev/md0" will get info from configfile, even without scan
+ - When assembling multipath arrays, ignore devices which are flagged
+ as having errors.
+ - take --super-minor=dev to mean "use the minor number of the mddev
+ being assembled.
+ - take --config=none to mean "completely ignore config file"
+ - Make --monitor require --scan or a device list.
+Changes Prior to 1.0.9 release
+ - Documentation updates including kernel parameters documented
+ in md.4
+ - --assemble --force for raid4/5 will mark clean, needed for 2.5
+ - --detail prints out the events counter as well
+ - flush device before reading superblock to be sure to get
+ current data
+ - added mdadm.static target to makefile for static linking
+ - --monitor was ignoring /dev/md0 due to off-by-one error
+ - Fix assorted typos
+ - Fix printing of Gibibytes - calc was wrong.
+ - Fix printing of Array Size in --detail when very big.
+ - --monitor no longer tries to work for raid0 or linear as these
+ have nothing to be monitored.
+ - The word 'partitions' on a DEVICE line will cause all partitions
+ listed in /proc/partitions to be considered
+ - If the config file is called 'partitions' then it will be treated
+ as though it contained exactly 'device partitions' so e.g.
+ mdadm -Ebsc partitions
+ will find all raid partitions easily.
+ - successfully assemble multipath devices by ignoring raid_disk
+ value from superblock (it is always the same).
+ - --assemble not tied to MD_SB_DISKS limit quite so much
+ - Support compiling with tcc
+ - Support compiling with uclibc - just skip scan of /dev
+ - Add --update= option for Assemble mode. Either sparc2.2
+ or super-minor updates are possible. See mdadm.8
+
+Changes Prior to 1.0.1 release
+ - Round off MB/GiB etc values instead of round down.
+ - Add --sparc2.2 option to examine to shift superblock around
+ and --sparc2.2update to rewrite the superblock
+ - Fix assorted typos in online help
+
+Changes Prior to 1.0.0 release
+ - Allow --config with Misc mode (for --examine --scan)
+ - Add $(CXFLAGS) to end of CFLAGS in makefile
+ - When making an N disk raid5 array, the Nth drive
+ is moved to the end of the array as a spare rather than
+ being shifted up one place. This means that when the
+ kernel builds onto the last spare and inserts it,
+ the devices will be in the expected order.
+ - Man page improvements
+Changes Prior to 0.8.2 release
- Correct spelling of persist[ae]nce/persist[ae]nt.
- Change "disk" to "device" in options and config file
- convert array size to "long long" *before* shift-left in -D and -Q
- Remove the limit on the number of device names that can be
given on the command line.
- - Fix bug in --assemble --force where it would only update a
+ - Fix bug in --assemble --force where it would only update a
single superblock.
- Fix bogus printing of big numbers not being block devices
when given names of devices that don't exist.
- When --assemble --force, consider superblocks with an event
count that is 1 behind as out-of-date. Normally they are
considered up-to-date (as the kernel assumes this too).
- - When marking drives as not-failed in the superblock,
+ - When marking drives as not-failed in the superblock,
we also mark them as ACTIVE and SYNC.
- Don't start arrays for which not all drives are available unless:
--scan which implies that all drives were found automatically
not started yet.
- man page update
- Taught Examine to handle --scan. It examines all devices listed
- on DEVICE lines in the config file.
+ on DEVICE lines in the config file.
- Added --brief (-b) flag for Examine and Detail to print out
and mdctl.conf compatible description with uuid=, level=,
disks= and - for Examine - devices=
- --examine --brief collects all devices the make the one array and
+ --examine --brief collects all devices the make the one array and
list them as one entry.
- Added level= and disks= options to ARRAY lines in config files
so --brief output could be used as-is.
superblock that says the minor number of the array is 4.
If the blocks with the right minor number do not all have the
same UUID, an error is flags and no assembly happens.
-
+
array /dev/md3 devices=/dev/hd[abc]2
Assembles /dev/md3 drom /dev/hda2 /dev/hdb2 and/dev/hdc2. All
array /dev/md2 devices=/dev/hd?2 super-minor=2
- will assemble /dev/md2 using all /dev/hd?2 devices which have a
+ will assemble /dev/md2 using all /dev/hd?2 devices which have a
raid superblock with minor number 2.
-
+
--create:
When listing devices for --create, the word "missing" can be
used to indicate that the respective slot does not have a
and drive listed for the last slot added as a spare. If a
"missing" slot is given, or if --force is given, then --create
does exactly what you ask and doesn't try to be clever.
-
+
--follow / --monitor:
This is a new mode. I couldn't stop my self from picking a name
starting with F (as current modes start A,B,C,D,E) but I
relented and provided an alternate name that is somewhat more
- meaningful.
-
+ meaningful.
+
In this mode, mdctl does not exit, but runs continuously and
periodically polls all the md devices to see if they have had
any interested state change.
Options:
--mail mailaddress - send Email on any Fail* event
- --program program - run the program on any event.
+ --program program - run the program on any event.
Args are: eventname mddevice subdevice(if-known)
--delay seconds - change from the default 60second pause
between polls.
There is now a man page and mdctl.spec (for rpm) thanks to
Danilo Godec <danci@agenda.si>.
-
+
Ofcourse, the man page is now out of date and despite being based on
the --help output, is not wholy correct. After I get --follow
working properly, I plan to revise the various documentation and/or
the code to make sure the two match.
-
projects / thirdparty / mdadm.git / blobdiff