So yesterday, I had Ubuntu 12.04 on a 1tb standalone drive, and a hardware RAID 1 array of two 1.5tb drives. The RAID is setup in the BIOS, and has functioned as expected on Windows and on Ubuntu 13.04.
Today, I installed Xubuntu 13.10 on the standalone drive. So NO changes made to the RAID 1 array.
Booted into Xubuntu, and now the RAID disks show up as two separate disks, (SDa and SDb,) and can both me mounted and modified. However, changes do not "sync" between the two disks.
So, with no changes made on the hardware RAID side, why did Ubuntu recognize my RAID array as 1 unit, and function properly with it, but Xubuntu does not?
Will I have to implement a software solution in order to resolve this? And if so, is there any way to implement that software solution without having to wipe the drives and start fresh? I don't exactly have 1.5tb of free space hanging around to back everything up to and start over.
Thanks. Results of fdisk -l
below, and the top two drives are the two that are supposed to be in hardware RAID 1:
Disk /dev/sda: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 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: 0x0b2dac61
Device Boot Start End Blocks Id System
/dev/sda1 2048 2929684479 1464841216 7 HPFS/NTFS/exFAT
Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 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: 0x0b2dac61
Device Boot Start End Blocks Id System
/dev/sdb1 2048 2929684479 1464841216 7 HPFS/NTFS/exFAT
Disk /dev/sdc: 640.1 GB, 640135028736 bytes
255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 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: 0x72ad4fdb
Device Boot Start End Blocks Id System
/dev/sdc1 * 2048 206847 102400 7 HPFS/NTFS/exFAT
/dev/sdc2 206848 1250129919 624961536 7 HPFS/NTFS/exFAT
Disk /dev/sdd: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 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: 0x000f205c
Device Boot Start End Blocks Id System
/dev/sdd1 1945524224 1953523711 3999744 82 Linux swap / Solaris
/dev/sdd2 * 2048 976564547 488281250 83 Linux
/dev/sdd3 976566272 1945524223 484478976 83 Linux
Partition table entries are not in disk order