* filesystem usage - give an overview of fs usage in a way (道, みち,
michi) that's more
* device usage - more detailed information about per-device allocations
* same restrictions as for 'fi usage'
Interesting.
Used these to create a filesystem, with btrfs-progs v3.17.3:
# mkfs.btrfs -O skinny-metadata -d raid1 -m raid1 /dev/sda4 /dev/sdb4 -f
Now, with btrfs-progs 3.18 and these new options I can see that the fs
is partially single, not RAID-1 - how come?
# btrfs fil us /srv
Overall:
Device size: 5.25TiB
Device allocated: 510.04GiB
Device unallocated: 4.76TiB
Used: 505.39GiB
Free (estimated): 2.38TiB (min: 2.38TiB)
Data ratio: 2.00
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 0.00B)
Data,single: Size:8.00MiB, Used:0.00B
/dev/sda4 8.00MiB
Data,RAID1: Size:252.00GiB, Used:250.56GiB
/dev/sda4 252.00GiB
/dev/sdb4 252.00GiB
Metadata,single: Size:8.00MiB, Used:0.00B
/dev/sda4 8.00MiB
Metadata,RAID1: Size:3.00GiB, Used:2.13GiB
/dev/sda4 3.00GiB
/dev/sdb4 3.00GiB
System,single: Size:4.00MiB, Used:0.00B
/dev/sda4 4.00MiB
System,RAID1: Size:8.00MiB, Used:64.00KiB
/dev/sda4 8.00MiB
/dev/sdb4 8.00MiB
Unallocated:
/dev/sda4 2.38TiB
/dev/sdb4 2.38TiB
root@backup01 ~ # btrfs dev us /srv
/dev/sda4, ID: 1
Device size: 2.63TiB
Data,single: 8.00MiB
Data,RAID1: 252.00GiB
Metadata,single: 8.00MiB
Metadata,RAID1: 3.00GiB
System,single: 4.00MiB
System,RAID1: 8.00MiB
Unallocated: 2.38TiB
/dev/sdb4, ID: 2
Device size: 2.63TiB
Data,RAID1: 252.00GiB
Metadata,RAID1: 3.00GiB
System,RAID1: 8.00MiB
Unallocated: 2.38TiB
--
Tomasz Chmielewski
http://www.sslrack.com
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