On 18. 4. 2010 8:57, Ciprian Dorin, Craciun wrote:
* there is an option for the kernel that must be enabled at
compile time that enables automatic RAID detection and assembly by the
kernel before mounting /, but it works only for MD metadata 0.96 (see
[1]);
* the default metadata for `mdadm` is 1.2 (see `man mdadm`, and
search for `--metadata`), so when creating the RAID you must
explicitly select the metadata you want;
[1]
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=Documentation/md.txt;h=188f4768f1d58c013d962f993ae36483195fd288;hb=HEAD
Which version of mdadm are you using? I have 3.0, and defalut metadata
is 0.90:
-e , --metadata=
Declare the style of RAID metadata (superblock) to be used. The
default is 0.90 for --create, and to guess for other operations.
The default can be overridden by setting the metadata value for
the CREATE keyword in mdadm.conf.
BTW [1] says about kernel 2.6.9, things might have changed since then...
Jarry
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