Bug#465491: mdadm use wrong metadata version as default

Ruben Puettmann ruben at puettmann.net
Tue Feb 12 19:32:51 UTC 2008


Package: mdadm
Version: 2.6.4-1
Severity: critical
Justification: breaks lilo boot from raid1


Lilo can only boot from Raid1 devices with raid 0.9 metadata. Not with
raid 1.x. The manpage from mdadm says:

              Options are:

              0, 0.90, default
                     Use  the  original  0.90  format superblock.  This format
                     limits arrays to 28 component devices and  limits  compo‐
                     nent devices of levels 1 and greater to 2 terabytes.

              1, 1.0, 1.1, 1.2
                     Use  the  new  version-1 format superblock.  This has few
                     restrictions.   The  different  sub-versions  store   the
                     superblock  at  different locations on the device, either
                     at the end (for 1.0), at the start (for 1.1) or  4K  from
                     the start (for 1.2).


but the mdadm from debian doesn't use 0.9 as default. For more information 
please look at : https://anti.teamidiot.de/nei/2006/10/softraid_lilo/

                Ruben


-- 
Ruben Puettmann
ruben at puettmann.net
http://www.puettmann.net
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