From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Subject: ANNOUNCE: mdadm 3.3 - A tools for managing md Soft RAID under Linux Date: Tue, 3 Sep 2013 14:57:36 +1000 Message-ID: <20130903145736.39e11aa0@notabene.brown> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/A9eZef=6/w8BSUfyjTUVHyv"; protocol="application/pgp-signature" Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux RAID List-Id: linux-raid.ids --Sig_/A9eZef=6/w8BSUfyjTUVHyv Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable I am pleased to announce the availability of mdadm version 3.3 It is available at the usual places: http://www.kernel.org/pub/linux/utils/raid/mdadm/ and via git at git://github.com/neilbrown/mdadm git://neil.brown.name/mdadm http://git.neil.brown.name/git/mdadm 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 all. 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=3Dmetadata" can convert a 0.90 array to a 1.0 array. - bad-block-logs are supported (but not heavily tested yet) - "--assemble --update=3Drevert-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=3Dyes >> /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=3Dyes > /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 --Sig_/A9eZef=6/w8BSUfyjTUVHyv Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iQIVAwUBUiVsQDnsnt1WYoG5AQKEfQ//RwE9zyBYENfcCweFi/qqrQRNsks7Nmlg oZF3fqTH+IS5jQ303D+p+qW06MS7H9cxmV8FJaLzIW6ev3g8aempY13wrHLP1rff g3U3y5ymljMrOcZDamiik08/0FOjK3BlVACK8IIrLuObBLN3MXK8xOUmFsvpeDXB hufM1bdBDiVlyscVmULO4UHEQ0IrV/QC3Pf5iH41tAuMKAFQqgFX7RXcMJU0f96I qAg1tHpNHa0UUxoZT5fHl+l7QDgeA4iIBgpI9MYiiCc9+vNc6ltE2qHmV+lit8c4 qV7BwUIGhMxagw33Lhjhux/XhatSveadNaetCdSXuR3ojWl/vwRh8Dj3gcrxVL8k pMaGBMxyYn603mWrRHDdSKcTb3GKfBiDkrxBtv1OY7sPL2eOIMDXDeHtIO+3Hexh GWs7X1W8ARqk8alrVGBmCFKtXGz0uAH5ORrP9LbdDZrBZwYnJ6UqNH7Pof66kWAJ oeH0Sr5yOeIrXC4TPWzlqlZhf4ryRet5PZrlDRCcrZRhdvOIp3lbWRspGnmYiUAi X8CbdNjykyXR9py0VBubBgvUxxmvRbn0IuEOUYBojyFoNrSBZ4/UuyGviEDkD0Lq jlEf/B7niX4/WIm5HqZihVaWAd7kMr0Pqb/l03V/ye4hcPkYZfC1sp9a5wqPdJU4 WgvzzT1Dubs= =MB6c -----END PGP SIGNATURE----- --Sig_/A9eZef=6/w8BSUfyjTUVHyv--