| Subject: ANNOUNCE: mdadm 3.1.1 - A tool for managing Soft RAID under Linux |
| |
| I am pleased to announce the availability of |
| mdadm version 3.1.1 |
| |
| It is available at the usual places: |
| countrycode=xx. |
| http://www.${countrycode}kernel.org/pub/linux/utils/raid/mdadm/ |
| and via git at |
| git://neil.brown.name/mdadm |
| http://neil.brown.name/git?p=mdadm |
| |
| This is a bugfix release over 3.1, which was withdrawn due to serious |
| bugs. So it might be best to ignore 3.1 and say that this is a significant |
| feature release over 3.0.x |
| |
| Significant changes are: |
| - RAID level conversion between RAID1, RAID5, and RAID6 are |
| possible were the kernel supports it (2.6.32 at least) |
| - online chunksize and layout changing for RAID5 and RAID6 |
| where the kernel supports it. |
| - reduce the number of devices in a RAID4/5/6 array. |
| |
| - The default metadata is not v1.1. This metadata is stored at the |
| start of the device so is safer in many ways but could interfere with |
| boot loaded. The old default (0.90) is still available and fully |
| supported. |
| |
| - The default chunksize is now 512K rather than 64K. This seems more |
| appropriate for modern devices. |
| |
| - The default bitmap chunksize for internal bitmaps is now at least |
| 64Meg as fine grained bitmaps tend to impact performance more for |
| little extra gain. |
| |
| This release is believed to be stable and you should feel free to |
| upgrade to 3.1.1. |
| |
| NeilBrown 19th November 2009 |