I have installed proxmox with raid10 on 4hd each of 2tb - but I see 16gb left and md0 as raid1 ?
/var/lib/vz # mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Mon Apr 6 19:05:12 2020
Raid Level : raid1
Array Size : 523264 (511.00 MiB 535.82 MB)
Used Dev Size : 523264 (511.00 MiB 535.82 MB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Mon Apr 6 19:41:57 2020
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Consistency Policy : resync
Name : rescue:0
UUID : 110f4447:74913085:8d844ede:6cf140cd
Events : 106
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
2 8 33 2 active sync /dev/sdc1
3 8 49 3 active sync /dev/sdd1
root@px-go2 /var/lib/vz # cat /proc/mdstat
Personalities : [raid1] [raid10] [linear] [multipath] [raid0] [raid6] [raid5] [raid4]
md1 : active raid10 sdb2[1] sda2[0] sdc2[2] sdd2[3]
3905712128 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU]
bitmap: 1/30 pages [4KB], 65536KB chunk
md0 : active raid1 sdb1[1] sda1[0] sdd1[3] sdc1[2]
523264 blocks super 1.2 [4/4] [UUUU]
unused devices: <none>
root@px-go2 /var/lib/vz # df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 820K 3.2G 1% /run
/dev/mapper/vg0-root 15G 4.9G 9.1G 35% /
tmpfs 16G 43M 16G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 16G 0 16G 0% /sys/fs/cgroup
/dev/md0 487M 110M 353M 24% /boot
/dev/fuse 30M 16K 30M 1% /etc/pve
tmpfs 3.2G 0 3.2G 0% /run/user/0
root@px-go2 /var/lib/vz #
/var/lib/vz # mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Mon Apr 6 19:05:12 2020
Raid Level : raid1
Array Size : 523264 (511.00 MiB 535.82 MB)
Used Dev Size : 523264 (511.00 MiB 535.82 MB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Mon Apr 6 19:41:57 2020
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Consistency Policy : resync
Name : rescue:0
UUID : 110f4447:74913085:8d844ede:6cf140cd
Events : 106
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
2 8 33 2 active sync /dev/sdc1
3 8 49 3 active sync /dev/sdd1
root@px-go2 /var/lib/vz # cat /proc/mdstat
Personalities : [raid1] [raid10] [linear] [multipath] [raid0] [raid6] [raid5] [raid4]
md1 : active raid10 sdb2[1] sda2[0] sdc2[2] sdd2[3]
3905712128 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU]
bitmap: 1/30 pages [4KB], 65536KB chunk
md0 : active raid1 sdb1[1] sda1[0] sdd1[3] sdc1[2]
523264 blocks super 1.2 [4/4] [UUUU]
unused devices: <none>
root@px-go2 /var/lib/vz # df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 820K 3.2G 1% /run
/dev/mapper/vg0-root 15G 4.9G 9.1G 35% /
tmpfs 16G 43M 16G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 16G 0 16G 0% /sys/fs/cgroup
/dev/md0 487M 110M 353M 24% /boot
/dev/fuse 30M 16K 30M 1% /etc/pve
tmpfs 3.2G 0 3.2G 0% /run/user/0
root@px-go2 /var/lib/vz #
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