path: root/ANNOUNCE-3.3
diff options
authorMichael Tokarev <>2014-12-20 08:48:44 +0000
committerMichael Tokarev <>2014-12-20 08:48:44 +0000
commit489bea7ee8e1dbecfa517b8415568044ab57c73a (patch)
tree44d4878d4c7da3f4908ea9a765ef9b8f9c141756 /ANNOUNCE-3.3
mdadm (3.3.2-5) unstable; urgency=medium
* use-tempnode-not-devnode.patch: change udev rules file to use $tempnode which works both on wheezy and jessie udev, instead of $devnode which only works in jessie. At this stage it is better to make rules file compatible with old version instead of adding versioned dependency. Should be removed for jessie+1. (Closes: #770883) * fix Closes: list in previous entry (Closes: #771852) # imported from the archive
Diffstat (limited to 'ANNOUNCE-3.3')
1 files changed, 63 insertions, 0 deletions
diff --git a/ANNOUNCE-3.3 b/ANNOUNCE-3.3
new file mode 100644
index 00000000..f770aa13
--- /dev/null
+++ b/ANNOUNCE-3.3
@@ -0,0 +1,63 @@
+Subject: ANNOUNCE: mdadm 3.3 - A tools for managing md Soft RAID under Linux
+I am pleased to announce the availability of
+ mdadm version 3.3
+It is available at the usual places:
+and via git at
+ git://
+ git://
+This is a major new release so don't be too surprised if there are a
+few issues. If I hear about them they will be fixed in 3.3.1.
+git log reports nearly 500 changes since 3.2.6 so I won't list them
+Some highlights are:
+- Some array reshapes can proceed without needing backup file.
+ This is done by changing the 'data_offset' so we never need to write
+ any data back over where it was before. If there is no "head space"
+ or "tail space" to allow data_offset to change, the old mechanism
+ with a backup file can still be used.
+- RAID10 arrays can be reshaped to change the number of devices,
+ change the chunk size, or change the layout between 'near'
+ and 'offset'.
+ This will always change data_offset, and will fail if there is no
+ room for data_offset to be moved.
+- "--assemble --update=metadata" can convert a 0.90 array to a 1.0 array.
+- bad-block-logs are supported (but not heavily tested yet)
+- "--assemble --update=revert-reshape" can be used to undo a reshape
+ that has just been started but isn't really wanted. This is very
+ new and while it passes basic tests it cannot be guaranteed.
+- improved locking between --incremental and --assemble
+- uses systemd to run "mdmon" if systemd is configured to do that.
+- kernel names of md devices can be non-numeric. e.g. "md_home" rather than
+ "md0". This will probably confuse lots of other tools, so you need to
+ echo CREATE names=yes >> /etc/mdadm.conf
+ or the feature will not be used. (you also need a reasonably new kernel).
+- "--stop" can be given a kernel name instead of a device name. i.e
+ mdadm --stop md4
+ will work even if /dev/md4 doesn't exist.
+- "--detail --export" has some information about the devices in the array
+- --dump and --restore can be used to backup and restore the metadata on an
+ array.
+- Hot-replace is supported with
+ mdadm /dev/mdX --replace /dev/foo
+ and
+ mdadm /dev/mdX --replace /dev/foo --with /dev/bar
+- Config file can be a directory in which case all "*.conf" files are
+ read in lexical order.
+ Default is to read /etc/mdadm.conf and then /etc/mdadm.conf.d
+ Thus
+ echo CREATE name=yes > /etc/mdadm.conf.d/names.conf
+ will also enable the use of named md devices.
+- Lots of improvements to DDF support including adding support for
+ RAID10 (thanks Martin Wilck).
+and lots of bugfixes and other little changes.
+NeilBrown 3rd September 2013