I have 4x 3TB WD RED disks that are in mdadm RAID5, which should total an array size of 9TB usable space, however I only have 6TB.
I have confirmed all disks are in the array, the only strange thing is that fdisk returns different partition IDs, head sizes, and sector sizes, etc. for each of the drives. As these drives were added at different times it's possible I followed a different tutorial and this lead to some mishap.
I of course don't want to start trying things willy-nilly, as I don't want to lose data. So I'm hoping it's an easy fix and just something that I'm missing. Once I know which disk is at fault I can re-add this to the array correctly.
root@bobserv:~# cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid5 sdb1[5] sdc1[3] sdd1[1] sde1[4] 6442053120 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/4] [UUUU] unused devices: none
root@bobserv:~# mdadm --detail /dev/md/0 /dev/md/0: Version : 1.2 Creation Time : Thu Oct 17 20:19:10 2013 Raid Level : raid5 Array Size : 6442053120 (6143.62 GiB 6596.66 GB) Used Dev Size : 2147351040 (2047.87 GiB 2198.89 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Tue Feb 11 09:36:33 2014 State : active Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K Name : bob:0 UUID : aa43b63e:1c359341:077e94c8:36875aaf Events : 84216 Number Major Minor RaidDevice State 4 8 65 0 active sync /dev/sde1 1 8 49 1 active sync /dev/sdd1 3 8 33 2 active sync /dev/sdc1 5 8 17 3 active sync /dev/sdb1
root@bobserv:~# fdisk -l Disk /dev/sda: 85.9 GB, 85899345920 bytes 255 heads, 63 sectors/track, 10443 cylinders, total 167772160 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: 0x00045481 Device Boot Start End Blocks Id System /dev/sda1 * 2048 165675007 82836480 83 Linux /dev/sda2 165677054 167770111 1046529 5 Extended /dev/sda5 165677056 167770111 1046528 82 Linux swap / Solaris WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdb: 3000.6 GB, 3000592982016 bytes 255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 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: 0x79c7d1c7 Device Boot Start End Blocks Id System /dev/sdb1 1 4294967295 2147483647+ ee GPT Disk /dev/sdc: 3000.6 GB, 3000592982016 bytes 90 heads, 3 sectors/track, 21705678 cylinders, total 5860533168 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: 0x6b7a81a1 Device Boot Start End Blocks Id System /dev/sdc1 2048 4294967294 2147482623+ fd Linux RAID autodetect Disk /dev/sdf: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 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: 0x00083e19 Device Boot Start End Blocks Id System /dev/sdf1 2048 123844607 61921280 83 Linux /dev/sdf2 123846654 156248063 16200705 5 Extended /dev/sdf5 123846656 156248063 16200704 82 Linux swap / Solaris WARNING: GPT (GUID Partition Table) detected on '/dev/sde'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sde: 3000.6 GB, 3000592982016 bytes 255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 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 Device Boot Start End Blocks Id System /dev/sde1 1 4294967295 2147483647+ ee GPT Disk /dev/sdd: 3000.6 GB, 3000592982016 bytes 90 heads, 3 sectors/track, 21705678 cylinders, total 5860533168 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: 0x83a606dd Device Boot Start End Blocks Id System /dev/sdd1 2048 4294967294 2147482623+ fd Linux RAID autodetect Disk /dev/md0: 6596.7 GB, 6596662394880 bytes 2 heads, 4 sectors/track, 1610513280 cylinders, total 12884106240 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 524288 bytes / 1048576 bytes Disk identifier: 0x00000000 Disk /dev/md0 doesn't contain a valid partition table root@bobserv:~#
EDIT: I have also unmounted the array and tried both fsck.ext4 -f /dev/md0 & resize2fs /dev/md0 to no avail.
# parted -l Model: VMware, VMware Virtual S (scsi) Disk /dev/sda: 85.9GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 84.8GB 84.8GB primary ext4 boot 2 84.8GB 85.9GB 1072MB extended 5 84.8GB 85.9GB 1072MB logical linux-swap(v1) Model: VMware, VMware Virtual S (scsi) Disk /dev/sdb: 3001GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 3001GB 3001GB ntfs primary Model: VMware, VMware Virtual S (scsi) Disk /dev/sdc: 3001GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 2199GB 2199GB primary raid Model: VMware, VMware Virtual S (scsi) Disk /dev/sdd: 3001GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 2199GB 2199GB primary raid Model: VMware, VMware Virtual S (scsi) Disk /dev/sde: 3001GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 3001GB 3001GB primary Model: VMware, VMware Virtual S (scsi) Disk /dev/sdf: 500GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 63.4GB 63.4GB primary ext4 2 63.4GB 80.0GB 16.6GB extended 5 63.4GB 80.0GB 16.6GB logical linux-swap(v1) Model: Linux Software RAID Array (md) Disk /dev/md0: 6597GB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size File system Flags 1 0.00B 6597GB 6597GB ext4 root@kierserv:/media/store/TV Shows/Bob's Burgers#
parted -l
? Also it is kind of strange to have some partitions with Idee
and some withfd
(but that did not seem to confuse mdadm). Resizing does not help until the output frommdadm
tells you have > 8Gb)