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Thread: 12.04 in raid 0 - doesn't contain a valid partition table

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hello, had been using raid 0 hdd 2tb.
recently, update ubuntu 11.04 12.04 don't raid partition table previously.

sdc os 200gb
sda, sdab data 2 x 2tb --> raid 0

don't think raid unlinked so.
code:
lovelain@seedingbox:~$ sudo dmraid -tay isw_bcgihffca_data_4tb: 0 7814048256 striped 2 256 /dev/sda 0 /dev/sdb 0 isw_bcgihffca_data_4tb1: 0 3907024002 linear /dev/mapper/isw_bcgihffca_data_4tb 63
but, message fdisk -l
/dev/mapper/isw_bcgihffca_data_4tb1 doesn't contain valid partition table
can me?

code:
lovelain@seedingbox:~$ sudo fdisk -l  disk /dev/sda: 2000.4 gb, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors units = sectors of 1 * 512 = 512 bytes sector size (logical/physical): 512 bytes / 512 bytes i/o size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x27836da4  device boot start end blocks id system /dev/sda1 63 3907024064 1953512001 fd linux raid autodetect  disk /dev/sdb: 2000.4 gb, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors units = sectors of 1 * 512 = 512 bytes sector size (logical/physical): 512 bytes / 512 bytes i/o size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x974200c3  device boot start end blocks id system /dev/sdb1 63 3907024064 1953512001 fd linux raid autodetect  disk /dev/sdc: 250.1 gb, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors units = sectors of 1 * 512 = 512 bytes sector size (logical/physical): 512 bytes / 512 bytes i/o size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x0001566e  device boot start end blocks id system /dev/sdc1 * 2048 480188415 240093184 83 linux /dev/sdc2 480190462 488396799 4103169 5 extended /dev/sdc5 480190464 488396799 4103168 82 linux swap / solaris  disk /dev/mapper/isw_bcgihffca_data_4tb: 4000.8 gb, 4000792707072 bytes 255 heads, 63 sectors/track, 486402 cylinders, total 7814048256 sectors units = sectors of 1 * 512 = 512 bytes sector size (logical/physical): 512 bytes / 512 bytes i/o size (minimum/optimal): 131072 bytes / 262144 bytes disk identifier: 0x27836da4  device boot start end blocks id system /dev/mapper/isw_bcgihffca_data_4tb1 63 3907024064 1953512001 fd linux raid autodetect partition 1 not start on physical sector boundary.  disk /dev/mapper/isw_bcgihffca_data_4tb1: 2000.4 gb, 2000396289024 bytes 255 heads, 63 sectors/track, 243200 cylinders, total 3907024002 sectors units = sectors of 1 * 512 = 512 bytes sector size (logical/physical): 512 bytes / 512 bytes i/o size (minimum/optimal): 131072 bytes / 262144 bytes alignment offset: 98816 bytes disk identifier: 0x00000000  disk /dev/mapper/isw_bcgihffca_data_4tb1 doesn't contain valid partition table  root@seedingbox:/home/lovelain# cat /proc/partitions  major minor  #blocks  name     8        0 1953514584 sda    8       16 1953514584 sdb    8       32  244198584 sdc    8       33  240093184 sdc1    8       34          1 sdc2    8       37    4103168 sdc5  252        0 3907024128 dm-0  252        1 1953512001 dm-1   11        0    1024000 sr0



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