Emanuele Morozzi wrote: > I use mdadm and I have not compiled md and raid0 as modules, but > directly into the kernel. The problem is that while booting md doesn't > find the raid properly. > > If you,re interested, this is part of the output of "fdisk -l" > > ****************************************************************** > Disk /dev/sda: 203.9 GB, 203928109056 bytes > 255 heads, 63 sectors/track, 24792 cylinders > Units = cylinders of 16065 * 512 = 8225280 bytes > > Device Boot Start End Blocks Id System > /dev/sda1 * 1 2677 21502971 7 HPFS/NTFS > /dev/sda2 2678 25624 184321777+ 7 HPFS/NTFS > /dev/sda3 25625 39137 108543172+ 7 HPFS/NTFS > /dev/sda4 39138 49585 83923560 7 HPFS/NTFS > > Disk /dev/sdb: 203.9 GB, 203928109056 bytes > 255 heads, 63 sectors/track, 24792 cylinders > Units = cylinders of 16065 * 512 = 8225280 bytes > > Device Boot Start End Blocks Id System > /dev/sdb1 * 1 1581 12699351 fd Linux raid > autodetect > /dev/sdb2 1582 1706 1004062+ fd Linux raid > autodetect > /dev/sdb3 1707 1902 1574370 fd Linux raid > autodetect > /dev/sdb4 1903 24792 183863925 5 Extended > ****************************************************************** > > And this is my mdadm.conf: > > ****************************************************************** > DEVICE /dev/sda1 > DEVICE /dev/sdb1 > DEVICE /dev/sda2 > DEVICE /dev/sdb2 > DEVICE /dev/sda3 > DEVICE /dev/sdb3 > DEVICE /dev/sda4 > DEVICE /dev/sdb4 > > ARRAY /dev/md0 devices=/dev/sda1,/dev/sdb1 > ARRAY /dev/md1 devices=/dev/sda2,/dev/sdb2 > ARRAY /dev/md2 devices=/dev/sda3,/dev/sdb3 > ARRAY /dev/md3 devices=/dev/sda4,/dev/sdb4 > > PROGRAM /usr/sbin/handle-mdadm-events > ****************************************************************** >
Ok, I don't use mdadm, but that looks completely screwed up to me. First, if you want the md driver to autodetect your raid arrays, the partitions types on sda, as well as sdb4, need to be 0xfd. Use fdisk to fix them. You also need to create the arrays with "persistent superblocks." But, more importantly, your partition sizes are not even close to a match for raid 0. For example, /dev/md1 consists of sda2 and sdb2 according to your mdadm.conf file...but sda2 is ~92GB while sdb2 is 0.5GB. That means /dev/md1 (assuming raid0 or raid1) should come out about 1GB total size, wasting 91GB of space!!!! -Richard -- [email protected] mailing list
