Duncan, 

Thanks for the reply (apologies, I am not subscribed to the list). 

I compiled 4.14.0-rc7 and tried balance again with increasing amounts of dusage 
but it errored out again at dusage=60 with enospc. Will try downgrading to 
4.9.x and try again.

# uname -a
Linux nas 4.14.0-rc7+ #1 SMP Thu Nov 2 00:35:35 HKT 2017 x86_64 x86_64 x86_64 
GNU/Linux
 
# dmesg | grep enospc
[ 6989.220434] BTRFS info (device sdm): 8 enospc errors during balance

Cheers,

Ben


> On 2 Nov 2017, at 12:18 am, Ben Hooper <[email protected]> wrote:
> 
> Hello,
> 
> I am trying to upgrade capacity on by btrfs filesystem by replacing smaller 
> disks with larger ones. I added 2x8TB drives to the existing RAID10 but am 
> not seeing the expected increase in space and am experiencing enospc errors 
> during balance. This array has been extended several times but this is the 
> first time I have seen any issues.
> 
> Looking at the list archives, it seems that some others have had similar 
> problems. Has anyone found a solution or any recommendations?
> 
> Thanks,
> 
> Ben
> 
> Cannot remove device, no space left on device
> https://marc.info/?l=linux-btrfs&m=150684414519356&w=2
> 
> how to run balance successfully (No space left on device)?
> https://marc.info/?l=linux-btrfs&m=150566058009527&w=2
> 
> 
> # btrfs balance start -v -dusage=0 /data
> Dumping filters: flags 0x1, state 0x0, force is off
>  DATA (flags 0x2): balancing, usage=0
> ERROR: error during balancing '/data': No space left on device
> There may be more info in syslog - try dmesg | tail
> 
> # dmesg | tail
> [49518.949915] BTRFS info (device sdg): relocating block group 
> 241419042029568 flags data|raid10
> [49519.899061] BTRFS info (device sdg): relocating block group 
> 241419041767424 flags data|raid10
> [49521.448691] BTRFS info (device sdg): relocating block group 
> 241419041505280 flags data|raid10
> [49522.136725] BTRFS info (device sdg): relocating block group 
> 241419041243136 flags data|raid10
> [49522.877266] BTRFS info (device sdg): relocating block group 
> 241419040980992 flags data|raid10
> [49524.702461] BTRFS info (device sdg): relocating block group 
> 241419040718848 flags data|raid10
> [49525.068713] BTRFS info (device sdg): relocating block group 
> 241419040456704 flags data|raid10
> [49525.656543] BTRFS info (device sdg): relocating block group 
> 241419040194560 flags data|raid10
> [49549.168836] BTRFS info (device sdg): relocating block group 
> 241419039932416 flags data|raid10
> [49622.578101] BTRFS info (device sdg): 1 enospc errors during balance
> 
> 
> # btrfs --version
> btrfs-progs v4.13.3
> 
> # uname -a
> Linux nas 4.13.9-1.el7.elrepo.x86_64 #1 SMP Sun Oct 22 10:02:34 EDT 2017 
> x86_64 x86_64 x86_64 GNU/Linux
> 
> # btrfs filesystem df /data
> Data, RAID10: total=59.79TiB, used=59.77TiB
> System, RAID10: total=176.00MiB, used=133.80MiB
> Metadata, RAID10: total=97.69GiB, used=96.47GiB
> GlobalReserve, single: total=512.00MiB, used=16.00KiB
> 
> # df -h | grep data
> /dev/sdj                      67T   60T  269G 100% /data
> 
> 
> # btrfs filesystem show /data
> Label: 'data'  uuid: 3742056f-7ff0-4ce1-9131-ab2cfd7b8736
>        Total devices 24 FS bytes used 59.87TiB
>        devid    2 size 1.82TiB used 1.82TiB path /dev/sdj
>        devid    3 size 1.82TiB used 1.70TiB path /dev/sdk
>        devid    5 size 3.64TiB used 3.64TiB path /dev/sdo
>        devid    7 size 2.73TiB used 2.73TiB path /dev/sdr
>        devid   11 size 3.64TiB used 3.64TiB path /dev/sdm
>        devid   12 size 3.64TiB used 3.64TiB path /dev/sdn
>        devid   13 size 3.64TiB used 3.64TiB path /dev/sdp
>        devid   14 size 3.64TiB used 3.64TiB path /dev/sdq
>        devid   15 size 3.64TiB used 3.64TiB path /dev/sdw
>        devid   16 size 3.64TiB used 3.64TiB path /dev/sdx
>        devid   17 size 7.28TiB used 7.28TiB path /dev/sdv
>        devid   18 size 7.28TiB used 7.28TiB path /dev/sdu
>        devid   19 size 7.28TiB used 7.28TiB path /dev/sds
>        devid   20 size 7.28TiB used 7.28TiB path /dev/sdt
>        devid   21 size 7.28TiB used 7.28TiB path /dev/sdc
>        devid   22 size 7.28TiB used 7.28TiB path /dev/sdd
>        devid   23 size 7.28TiB used 7.28TiB path /dev/sdf
>        devid   24 size 7.28TiB used 7.27TiB path /dev/sde
>        devid   25 size 7.28TiB used 7.28TiB path /dev/sdl
>        devid   26 size 7.28TiB used 7.28TiB path /dev/sdh
>        devid   27 size 7.28TiB used 7.28TiB path /dev/sdi
>        devid   28 size 7.28TiB used 6.86TiB path /dev/sda
>        devid   29 size 7.28TiB used 586.88GiB path /dev/sdg
>        devid   30 size 7.28TiB used 586.88GiB path /dev/sdb
> 
> 
> # btrfs device usage /data
> /dev/sda, ID: 28
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:             1.16TiB
>   Data,RAID10:           447.48GiB
>   Data,RAID10:           687.27GiB
>   Data,RAID10:             8.00GiB
>   Data,RAID10:           371.32GiB
>   Data,RAID10:           173.51GiB
>   Data,RAID10:           144.21GiB
>   Data,RAID10:            14.36GiB
>   Data,RAID10:           437.67GiB
>   Data,RAID10:            36.90GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.42GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:       200.31MiB
>   Metadata,RAID10:       104.00MiB
>   Metadata,RAID10:       121.81MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.84TiB
> 
> /dev/sdb, ID: 30
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:            12.42GiB
>   Data,RAID10:           166.26GiB
>   Data,RAID10:           655.50MiB
>   Data,RAID10:           107.53MiB
>   Data,RAID10:           361.59MiB
>   Data,RAID10:            27.49GiB
>   Data,RAID10:             9.51GiB
>   Data,RAID10:            80.34MiB
>   Data,RAID10:            21.52GiB
>   Data,RAID10:             6.01GiB
>   Data,RAID10:            48.73GiB
>   Metadata,RAID10:       104.00MiB
>   Metadata,RAID10:        94.75MiB
>   Metadata,RAID10:        32.00KiB
>   Metadata,RAID10:       121.81MiB
>   Unallocated:             6.99TiB
> 
> /dev/sdc, ID: 21
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:             1.61TiB
>   Data,RAID10:           223.12GiB
>   Data,RAID10:           254.82GiB
>   Data,RAID10:           677.37GiB
>   Data,RAID10:           113.25GiB
>   Data,RAID10:           328.06GiB
>   Data,RAID10:             1.82GiB
>   Data,RAID10:            13.57GiB
>   Data,RAID10:           435.91GiB
>   Data,RAID10:            28.16GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.42GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:       128.00MiB
>   Metadata,RAID10:       104.00MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdd, ID: 22
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:             1.61TiB
>   Data,RAID10:           223.13GiB
>   Data,RAID10:           253.89GiB
>   Data,RAID10:           676.93GiB
>   Data,RAID10:           108.80GiB
>   Data,RAID10:           333.68GiB
>   Data,RAID10:             1.07GiB
>   Data,RAID10:            13.58GiB
>   Data,RAID10:           436.84GiB
>   Data,RAID10:            28.16GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:        98.12MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.42GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:       128.00MiB
>   Metadata,RAID10:       104.00MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sde, ID: 24
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:             1.61TiB
>   Data,RAID10:           223.12GiB
>   Data,RAID10:           256.53GiB
>   Data,RAID10:           684.66GiB
>   Data,RAID10:            94.81GiB
>   Data,RAID10:           342.01GiB
>   Data,RAID10:             5.54GiB
>   Data,RAID10:            13.58GiB
>   Data,RAID10:           437.63GiB
>   Data,RAID10:            16.96GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.42GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:       128.00MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdf, ID: 23
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:             1.61TiB
>   Data,RAID10:           223.13GiB
>   Data,RAID10:           251.77GiB
>   Data,RAID10:           677.52GiB
>   Data,RAID10:            80.12GiB
>   Data,RAID10:           347.13GiB
>   Data,RAID10:             7.98GiB
>   Data,RAID10:            13.59GiB
>   Data,RAID10:           437.67GiB
>   Data,RAID10:            36.90GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.42GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:       128.00MiB
>   Metadata,RAID10:       104.00MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdg, ID: 29
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:            12.42GiB
>   Data,RAID10:           166.26GiB
>   Data,RAID10:           655.50MiB
>   Data,RAID10:           107.53MiB
>   Data,RAID10:           361.59MiB
>   Data,RAID10:            27.49GiB
>   Data,RAID10:             9.51GiB
>   Data,RAID10:            80.34MiB
>   Data,RAID10:            21.52GiB
>   Data,RAID10:             6.01GiB
>   Data,RAID10:            48.73GiB
>   Metadata,RAID10:       104.00MiB
>   Metadata,RAID10:        94.75MiB
>   Metadata,RAID10:        32.00KiB
>   Metadata,RAID10:       121.81MiB
>   Unallocated:             6.99TiB
> 
> /dev/sdh, ID: 26
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:           334.81GiB
>   Data,RAID10:             1.11TiB
>   Data,RAID10:           447.48GiB
>   Data,RAID10:           679.58GiB
>   Data,RAID10:           349.80GiB
>   Data,RAID10:           173.51GiB
>   Data,RAID10:           144.19GiB
>   Data,RAID10:            13.94GiB
>   Data,RAID10:           428.25GiB
>   Data,RAID10:            10.06GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.42GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:       200.31MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdi, ID: 27
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:           334.81GiB
>   Data,RAID10:             1.11TiB
>   Data,RAID10:           447.43GiB
>   Data,RAID10:           679.59GiB
>   Data,RAID10:           349.80GiB
>   Data,RAID10:           173.51GiB
>   Data,RAID10:           144.20GiB
>   Data,RAID10:            13.97GiB
>   Data,RAID10:           428.25GiB
>   Data,RAID10:            10.06GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.42GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:       200.31MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdj, ID: 2
>   Device size:             1.82TiB
>   Device slack:            3.50KiB
>   Data,RAID10:            98.56GiB
>   Data,RAID10:           635.93GiB
>   Data,RAID10:           150.94GiB
>   Data,RAID10:            11.37GiB
>   Data,RAID10:            80.34MiB
>   Data,RAID10:             2.00GiB
>   Data,RAID10:             8.26GiB
>   Data,RAID10:             3.64GiB
>   Data,RAID10:            20.66GiB
>   Metadata,RAID10:        51.00MiB
>   Metadata,RAID10:        32.00KiB
>   System,RAID10:           8.00MiB
>   Unallocated:           931.52GiB
> 
> /dev/sdk, ID: 3
>   Device size:             1.82TiB
>   Device slack:            3.50KiB
>   Data,RAID10:            99.87GiB
>   Data,RAID10:           564.02GiB
>   Data,RAID10:           148.58GiB
>   Data,RAID10:             7.15GiB
>   Data,RAID10:            71.91MiB
>   Data,RAID10:            80.34MiB
>   Data,RAID10:            48.70GiB
>   Data,RAID10:           755.44MiB
>   Data,RAID10:           299.34MiB
>   Data,RAID10:             1.50MiB
>   Data,RAID10:             3.34MiB
>   Metadata,RAID10:         4.25MiB
>   Metadata,RAID10:       121.81MiB
>   System,RAID10:           8.00MiB
>   Unallocated:           993.38GiB
> 
> /dev/sdl, ID: 25
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:           334.81GiB
>   Data,RAID10:             1.11TiB
>   Data,RAID10:           447.48GiB
>   Data,RAID10:           679.56GiB
>   Data,RAID10:           349.80GiB
>   Data,RAID10:           173.51GiB
>   Data,RAID10:           144.20GiB
>   Data,RAID10:            13.88GiB
>   Data,RAID10:           428.26GiB
>   Data,RAID10:            10.12GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.42GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:       200.31MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdm, ID: 11
>   Device size:             3.64TiB
>   Device slack:              0.00B
>   Data,RAID10:           314.68GiB
>   Data,RAID10:           145.99GiB
>   Data,RAID10:            99.09MiB
>   Data,RAID10:           402.87GiB
>   Data,RAID10:           677.46GiB
>   Data,RAID10:           173.08GiB
>   Data,RAID10:           143.39GiB
>   Data,RAID10:           810.34MiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         2.84GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         1.63GiB
>   System,RAID10:           8.00MiB
>   Unallocated:             1.82TiB
> 
> /dev/sdn, ID: 12
>   Device size:             3.64TiB
>   Device slack:              0.00B
>   Data,RAID10:           314.79GiB
>   Data,RAID10:           145.98GiB
>   Data,RAID10:            36.97MiB
>   Data,RAID10:           401.44GiB
>   Data,RAID10:           677.21GiB
>   Data,RAID10:           718.41MiB
>   Data,RAID10:           173.43GiB
>   Data,RAID10:           143.81GiB
>   Data,RAID10:             1.04GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         2.84GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         1.54GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:        96.00KiB
>   System,RAID10:           8.00MiB
>   Unallocated:             1.82TiB
> 
> /dev/sdo, ID: 5
>   Device size:             3.64TiB
>   Device slack:              0.00B
>   Data,RAID10:           314.80GiB
>   Data,RAID10:           146.28GiB
>   Data,RAID10:            40.91MiB
>   Data,RAID10:           256.00KiB
>   Data,RAID10:           402.16GiB
>   Data,RAID10:           677.12GiB
>   Data,RAID10:           173.32GiB
>   Data,RAID10:           143.70GiB
>   Data,RAID10:           920.22MiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         2.84GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         1.66GiB
>   System,RAID10:           8.00MiB
>   Unallocated:             1.82TiB
> 
> /dev/sdp, ID: 13
>   Device size:             3.64TiB
>   Device slack:              0.00B
>   Data,RAID10:           314.78GiB
>   Data,RAID10:           146.04GiB
>   Data,RAID10:            22.66MiB
>   Data,RAID10:           402.35GiB
>   Data,RAID10:           676.72GiB
>   Data,RAID10:           222.78MiB
>   Data,RAID10:           173.39GiB
>   Data,RAID10:           143.56GiB
>   Data,RAID10:             1.02GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         2.84GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         1.82GiB
>   Metadata,RAID10:        55.94MiB
>   Metadata,RAID10:         1.06MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             1.82TiB
> 
> /dev/sdq, ID: 14
>   Device size:             3.64TiB
>   Device slack:              0.00B
>   Data,RAID10:           314.70GiB
>   Data,RAID10:           145.88GiB
>   Data,RAID10:            39.69MiB
>   Data,RAID10:           402.59GiB
>   Data,RAID10:           677.36GiB
>   Data,RAID10:           173.28GiB
>   Data,RAID10:           143.65GiB
>   Data,RAID10:           942.38MiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         2.84GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         1.57GiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:        32.00KiB
>   System,RAID10:           8.00MiB
>   Unallocated:             1.82TiB
> 
> /dev/sdr, ID: 7
>   Device size:             2.73TiB
>   Device slack:              0.00B
>   Data,RAID10:           314.71GiB
>   Data,RAID10:           120.72GiB
>   Data,RAID10:           674.68GiB
>   Data,RAID10:            56.00MiB
>   Data,RAID10:           171.74GiB
>   Data,RAID10:           112.30GiB
>   Data,RAID10:             6.44MiB
>   Data,RAID10:            57.94MiB
>   Data,RAID10:            80.34MiB
>   Data,RAID10:           320.00KiB
>   Metadata,RAID10:         2.84GiB
>   Metadata,RAID10:        53.12MiB
>   Metadata,RAID10:         4.41MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             1.36TiB
> 
> /dev/sds, ID: 19
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:           752.17GiB
>   Data,RAID10:           198.48GiB
>   Data,RAID10:           159.09GiB
>   Data,RAID10:             9.28GiB
>   Data,RAID10:             1.11TiB
>   Data,RAID10:           447.43GiB
>   Data,RAID10:           682.66GiB
>   Data,RAID10:           173.51GiB
>   Data,RAID10:           144.20GiB
>   Data,RAID10:            13.98GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         4.26GiB
>   Metadata,RAID10:         1.00GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:        72.31MiB
>   Metadata,RAID10:       104.00MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdt, ID: 20
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:           752.17GiB
>   Data,RAID10:           198.90GiB
>   Data,RAID10:           159.09GiB
>   Data,RAID10:             8.84GiB
>   Data,RAID10:             1.11TiB
>   Data,RAID10:           447.43GiB
>   Data,RAID10:           682.64GiB
>   Data,RAID10:           173.51GiB
>   Data,RAID10:           144.20GiB
>   Data,RAID10:            14.01GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         4.26GiB
>   Metadata,RAID10:         1.00GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:        72.31MiB
>   Metadata,RAID10:       104.00MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdu, ID: 18
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:           752.25GiB
>   Data,RAID10:           197.90GiB
>   Data,RAID10:           159.11GiB
>   Data,RAID10:             9.80GiB
>   Data,RAID10:             1.11TiB
>   Data,RAID10:           447.43GiB
>   Data,RAID10:           682.66GiB
>   Data,RAID10:           173.51GiB
>   Data,RAID10:           144.17GiB
>   Data,RAID10:            13.98GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         4.26GiB
>   Metadata,RAID10:         1.00GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:        72.31MiB
>   Metadata,RAID10:       104.00MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdv, ID: 17
>   Device size:             7.28TiB
>   Device slack:              0.00B
>   Data,RAID10:           752.18GiB
>   Data,RAID10:           198.17GiB
>   Data,RAID10:           159.09GiB
>   Data,RAID10:             9.63GiB
>   Data,RAID10:             1.11TiB
>   Data,RAID10:           447.45GiB
>   Data,RAID10:           682.59GiB
>   Data,RAID10:           173.51GiB
>   Data,RAID10:           144.20GiB
>   Data,RAID10:            13.99GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         4.26GiB
>   Metadata,RAID10:         1.00GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.06MiB
>   Metadata,RAID10:        72.31MiB
>   Metadata,RAID10:       104.00MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             3.64TiB
> 
> /dev/sdw, ID: 15
>   Device size:             3.64TiB
>   Device slack:              0.00B
>   Data,RAID10:           315.83GiB
>   Data,RAID10:           136.75GiB
>   Data,RAID10:           109.34MiB
>   Data,RAID10:             8.84GiB
>   Data,RAID10:           402.50GiB
>   Data,RAID10:           676.22GiB
>   Data,RAID10:           173.32GiB
>   Data,RAID10:           143.54GiB
>   Data,RAID10:           984.22MiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         2.84GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         1.91GiB
>   System,RAID10:           8.00MiB
>   Unallocated:             1.82TiB
> 
> /dev/sdx, ID: 16
>   Device size:             3.64TiB
>   Device slack:              0.00B
>   Data,RAID10:           317.18GiB
>   Data,RAID10:           144.33GiB
>   Data,RAID10:           110.44MiB
>   Data,RAID10:             8.84GiB
>   Data,RAID10:           390.79GiB
>   Data,RAID10:           677.60GiB
>   Data,RAID10:           173.41GiB
>   Data,RAID10:           143.58GiB
>   Data,RAID10:             2.05GiB
>   Data,RAID10:            80.34MiB
>   Metadata,RAID10:         2.84GiB
>   Metadata,RAID10:        99.00MiB
>   Metadata,RAID10:         4.41MiB
>   Metadata,RAID10:         2.03GiB
>   Metadata,RAID10:        56.06MiB
>   Metadata,RAID10:         1.06MiB
>   System,RAID10:           8.00MiB
>   Unallocated:             1.82TiB
> 
> 
> 
> 
> 

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