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mdadm.changes
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mdadm.changes
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-------------------------------------------------------------------
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Mon Apr 2 15:00:10 CEST 2007 - mmarek@suse.cz
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- updated to 2.6.1
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* --monitor was producing some meaningless warnings due to a bug.
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* Fix some compiler warnings.
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* Fully support --grow for raid6. If a reshape crashed during
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the critical period, mdadm wouldn't restore the Q information
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properly.
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* Update documentation for --grow.
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* Report bitmap status in --detail and --examine
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* Default to v1 superblocks instead of v0.90 if the array
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is too big for 0.90 to handle.
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* Sort the output of "mdadm --detail --scan" so that it is
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in a suitable order for assembling arrays. i.e. components come
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before an array that they are part of.
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* Require bitmap files to have a '/' in their name.
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* Rewrite 'reshape' support including performing a backup
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of the critical region for a raid5 growth, and restoring that
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backup after a crash.
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* Put a 'canary' at each end of the backup so a corruption
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can be more easily detected.
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* Support --backup-file for backing-up critical section during
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growth.
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* Erase old superblocks (of different versions) when creating new
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array.
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* Allow --monitor to work with arrays with >28 devices
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* Report reshape information in --detail
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* Handle symlinks in /dev better
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* Fix mess in --detail output which a device is missing.
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* Support 'bitmap=' in mdadm.conf for auto-assembling arrays with
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write-intent bitmaps in separate files.
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* Fix alignment problem in version-1 superblocks.
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NOTE: This is an incompatable change affecting raid5 reshape.
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If you want to reshape a raid5 using version-1 superblocks,
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use 2.6.17-rc2 or later, and mdadm-2.4.1 or later.
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* Support 'mailfrom' line in mdadm.conf so the From: line in alert
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emails can be explicitly set.
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* Arrange that SparesMissing (which is similar in import to
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DegradedArray) generates an Email.
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* Assume "DEVICE partitions" if no DEVICE line is given.
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* Support new 'offset' layout for raid10.
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* When creating a bitmap file, choose a chunksize to limit number
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of bitmap chunks to 2 million. More than this can cause kmalloc
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failure.
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* New 'CREATE' line in mdadm.conf for defaults such as owner, group,
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mode and auto-flag
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* --detail checks if array has been started or not and includes that
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in report.
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* When using --update=uuid on an array with a bitmap, update the
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bitmap's uuid too.
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* Add a copy of /proc/mdstat to the mail message sent by mdadm
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--monitor.
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* New flag --no-degraded to avoid starting arrays if there are
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fewer devices available than last time the array was started.
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This is only needed with --scan, as with --scan, that behaviour
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is the default.
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* Support for 'homehost' concept. This is a fairly major update.
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It includes a configfile option and a command line option for
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specifying a homehost, records that host in the superblock,
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and reports the homehost where possible.
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* Support for Auto Assembly. "mdadm -As" will, if provided with
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the name of a homehost, try to assemble all arrays it can find
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that were created for that homehost. See man pages for more details.
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* Don't try to create devices with --manage or --grow
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* allow default metadata (superblock) type to be specified
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in mdadm.conf
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* Avoid some misdetection of overlapping partitions
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* Add 'Array Slot' line to --examine for version-1 superblocks
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to make it a bit easier to see what is happening.
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* Work around bug in --add handling for version-1 superblocks
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in 2.6.17 (and prior).
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* Make -assemble a bit more resilient to finding strange
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information in superblocks.
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* When creating devices in /dev/md/ create matching symlinks
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from /dev. e.g. /dev/md0 -> /dev/md/0.
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Allow this to be disabled in mdadm.conf or on command line.
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* Allow a number (of partitions) after the 'yes' option to --auto=
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This is particularly useful in the 'create' line in mdadm.conf.
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* Remove partitions from any whole device that is made part of
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an md array. This is a work-around for annoying messages
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when the first block on some drive accidentally looks like a
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partition table.
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* Close stray fd in mdassemble so that it can assemble stacked
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devices
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* If mdassemble finds an array already assembled, it marks it
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read-write.
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* Remove error in md_open if array is already active. This isn't
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needed and gets in the ways if an array was created e.g. in
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initramfs, but device doesn't yet exist in /dev.
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* When --assemble --scan is run, if all arrays that could be found
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have already been started, don't report an error.
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* Allow --assemble --force to mark a raid6 clean when it has two
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missing devices (which is needed else if won't assemble.
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Without this fix it would only assemble if one or zero
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missing devices.
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* Support --update=devicesize for cases where the underlying device
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can change size.
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* Default to --auto=yes so the array devices with 'standard' names
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get created automatically, as this is almost always what is wanted.
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* Give useful message if raid4/5/6 cannot be started because it is
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not clean and is also degraded.
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* Increase raid456 stripe cache size if needed to --grow the array.
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The setting used unfortunately requires intimate knowledge of the
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kernel, and it not reset when the reshape finishes.
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* Change 'Device Size' to 'Used Dev Size' because it only shows how
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much of each device is actually used, not how big they are.
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* --wait or -W will wait for resync activity to finish on the given
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devices.
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* If two drives in a raid5 disappear at the same time, then "-Af"
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will add them both in rather than just one and forcing the array
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to 'clean'. This is slightly safer in some cases.
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* Don't hold md device open for so long in --monitor mode - map_dev
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can be slow and interferes with trying to stop the array.
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* Support --uuid= with --create to choose your own UUID.
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* New major more "--incremental" for incremental assemble of arrays,
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intended for use with udev.
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* lots of bugfixes
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* manpage updates
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-------------------------------------------------------------------
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Wed Jan 10 11:58:14 CET 2007 - mmarek@suse.cz
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