Hello Vladimir, Tuesday, July 11, 2006, 11:41:31 AM, you wrote: VS> Hi, VS> I created to 3 x /dev/md1 to /dev/md3 which consist of six identical VS> 200GB hdd VS> my mdadm --detail --scan looks like VS> Proteus:/home/vladoportos# mdadm --detail --scan VS> ARRAY /dev/md1 level=raid1 num-devices=2 VS> UUID=d1fadb29:cc004047:aabf2f31:3f044905 VS> devices=/dev/sdb,/dev/sda VS> ARRAY /dev/md2 level=raid1 num-devices=2 VS> UUID=38babb4d:92129d4a:94d659f1:3b238c53 VS> devices=/dev/sdc,/dev/sdd VS> ARRAY /dev/md3 level=raid1 num-devices=2 VS> UUID=a0406e29:c1f586be:6b3381cf:086be0c2 VS> devices=/dev/sde,/dev/sdf VS> ARRAY /dev/md0 level=raid1 num-devices=2 VS> UUID=c04441d4:e15d900e:57903584:9eb5fea6 VS> devices=/dev/hdc1,/dev/hdd1 VS> and mdadm.conf VS> DEVICE partitions VS> ARRAY /dev/md4 level=raid0 num-devices=3 VS> UUID=1c8291ba:2d83cf54:2698ce30:e49b1e6c VS> devices=/dev/md1,/dev/md2,/dev/md3 VS> ARRAY /dev/md3 level=raid1 num-devices=2 VS> UUID=a0406e29:c1f586be:6b3381cf:086be0c2 VS> devices=/dev/sde,/dev/sdf VS> ARRAY /dev/md2 level=raid1 num-devices=2 VS> UUID=38babb4d:92129d4a:94d659f1:3b238c53 VS> devices=/dev/sdc,/dev/sdd VS> ARRAY /dev/md1 level=raid1 num-devices=2 VS> UUID=d1fadb29:cc004047:aabf2f31:3f044905 VS> devices=/dev/sda,/dev/sdb VS> ARRAY /dev/md0 level=raid1 num-devices=2 VS> UUID=c04441d4:e15d900e:57903584:9eb5fea6 VS> devices=/dev/hdc1,/dev/hdd1 VS> as you can see i created than from md1-3 RAID0 - md4 its works fine... VS> but i cant get it again after reboot i need to create it again... VS> I dont get it why it wont creat at boot... any body had similar problem ? I haven't had a problem like this, but taking a wild guess - did you try putting the definitions in mdadm.conf in a different order? In particular, you define md4 before the system knows anything about the devices md[1-3]... You can speed up the checks (I think) by using something like this instead of rebooting full-scale, except for the last check to see if it all actually works :) mdadm --stop /dev/md4 mdadm --stop /dev/md3 mdadm --stop /dev/md2 mdadm --stop /dev/md1 mdadm -As or mdadm -Asc /etc/mdadm.conf.test Also you seem to make the md[1-3] devices from whole disks. Had you made them from partitions you could 1) Set a partition type to 0xfd so that a proper kernel could make your raid1 sets at boot-time and then make md4 correctly even with the current config file 2) Move the submirrors to another disk (i.e. a new larger one) if you needed to rebuild, upgrade, recover, etc. by just making a new partition of the same size. Also keep in mind that "200Gb" (and any other) disks of different models and makers can vary in size by several tens of megabytes... Bit me once with certain 36Gb SCSI disks which were somewhat larger than any competition, so we had to hunt for the same model to rebuild our array. A question to the general public: am I wrong? :) Are there any actual bonuses to making RAIDs on whole raw disks? -- Best regards, Jim Klimov mailto:klimov@xxxxxxxxxxx - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
