Hi all,
I've been testing OMV, to check if it is a match for my usage scenario.
Have run into this issue :
Started with 4 (2TB+2TB+1.5TB+2TB) drives in RAID5, this gave just over 4TB of usable storage space - bc of the odd 1.5TB drive.
Then removed the 1.5TB disk and replaced it with another 2TB drive, did a repair, the array is clean, but the wasted space still can not be recovered.
I can't grow the array, nor resize the XFS filesystem.
Code
root@nas:~# mdadm --detail /dev/md*
mdadm: /dev/md does not appear to be an md device
/dev/md0:
Version : 1.2
Creation Time : Fri Dec 25 10:58:41 2015
Raid Level : raid5
Array Size : 4395021312 (4191.42 GiB 4500.50 GB)
Used Dev Size : 1465007104 (1397.14 GiB 1500.17 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Sun Dec 27 15:58:10 2015
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : nas:softraid5 (local to host nas)
UUID : 09b96ada:76e38ecb:1a568536:d3243466
Events : 11290
Number Major Minor RaidDevice State
0 8 16 0 active sync /dev/sdb
1 8 32 1 active sync /dev/sdc
4 8 48 2 active sync /dev/sdd
3 8 64 3 active sync /dev/sde
root@nas:~# fdisk -l
Disk /dev/sda: 60.0 GB, 60022480896 bytes
255 heads, 63 sectors/track, 7297 cylinders, total 117231408 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: 0x000b3e11
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 113043455 56520704 83 Linux
/dev/sda2 113045502 117229567 2092033 5 Extended
/dev/sda5 113045504 117229567 2092032 82 Linux swap / Solaris
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: 0x00000000
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc: 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: 0x00000000
Disk /dev/sdc doesn't contain a valid partition table
Disk /dev/sdd: 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: 0x00000000
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sde: 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: 0x00000000
Disk /dev/sde doesn't contain a valid partition table
Disk /dev/md0: 4500.5 GB, 4500501823488 bytes
2 heads, 4 sectors/track, 1098755328 cylinders, total 8790042624 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 524288 bytes / 1572864 bytes
Disk identifier: 0x00000000
Disk /dev/md0 doesn't contain a valid partition tablehelp?