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diff --git a/ANNOUNCE-2.5 b/ANNOUNCE-2.5 new file mode 100644 index 0000000..8515015 --- /dev/null +++ b/ANNOUNCE-2.5 @@ -0,0 +1,67 @@ +Subject: ANNOUNCE: mdadm 2.5 - A tool for managing Soft RAID under Linux + +I am pleased to announce the availability of + mdadm version 2.5 + +It is available at the usual places: + http://www.cse.unsw.edu.au/~neilb/source/mdadm/ +and + http://www.{countrycode}.kernel.org/pub/linux/utils/raid/mdadm/ + +mdadm is a tool for creating, managing and monitoring +device arrays using the "md" driver in Linux, also +known as Software RAID arrays. + +Release 2.5 adds a host of minor updates and one major update. + +The major update involves an "Auto Assemble" function which will, +with certainly limits, scan all available devices for anything that +looks like an md array, and will try to assemble it. +This code should be treated with some caution as it is very new, +and could be revised in future, though hopefully not very much. + +The main problem I have always had will auto-assembly is that it +is too easy for it to assemble thing that you don't want assembled, +e.g. if you have moved some devices from a different computer. +To remove this problem, arrays can now be tagged for the computer +that is their home (homehost) and only arrays with the correct +homehost will be auto-assembled. + +Feedback on the effectiveness and usefulness of this feature and it's +documentation is encouraged. + +Changelog Entries: + - 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 sent 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. + - Support for 'homehost' concept. This is a fairly major update. + It includes a configfile option and a command line option for + specifying a homehost, records that host in the superblock, + and reports the homehost where possible. + - Support for Auto Assembly. "mdadm -As" will, if provided with + the name of a homehost, try to assemble all arrays it can find + that were created for that homehost. See man pages for more details. + +Development of mdadm is sponsored by + SUSE Labs, Novell Inc. + +NeilBrown 26th May 2006 + |