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f2902a1990
Calculate the alignment value as maximum of physical block sizes of
disks participating in the mirrored setup. Earlier the alignment was
calculated as a physical block size of the first disk of a mirrored
setup.
Without this change, the assertion in disk_get_blocklist_from_file()
'assert(reg->offset % info->phy_block_size == 0)' is triggered in case
when blocksize of base disk #J > blocksize of base disk #I && (J>I).
To reproduce the problem, build a mixed mirrored setup with first SCSI
disk, second DASD disk and prepare it for IPL.
Fixes: 731f00202c ("zipl/src: Enable heterogeneous mirrors support")
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>