On 7/18/20 12:36 PM, Steven Davies wrote:
On 17/07/2020 06:57, Zygo Blaxell wrote:
On Thu, Jul 16, 2020 at 09:11:17PM -0400, John Petrini wrote:
--snip--
/dev/sdf, ID: 12
Device size: 9.10TiB
Device slack: 0.00B
Data,RAID10: 784.31GiB
Data,RAID10: 4.01TiB
Data,RAID10: 3.34TiB
Data,RAID6: 458.56GiB
Data,RAID6: 144.07GiB
Data,RAID6: 293.03GiB
Metadata,RAID10: 4.47GiB
Metadata,RAID10: 352.00MiB
Metadata,RAID10: 6.00GiB
Metadata,RAID1C3: 5.00GiB
System,RAID1C3: 32.00MiB
Unallocated: 85.79GiB
[...]
RFE: improve 'dev usage' to show these details.
As a user I'd look at this output and assume a bug in btrfs-tools because of the repeated conflicting information.
What would be the expected output ?
What about the example below ?
/dev/sdf, ID: 12
Device size: 9.10TiB
Device slack: 0.00B
Data,RAID10: 784.31GiB
Data,RAID10: 4.01TiB
Data,RAID10: 3.34TiB
Data,RAID6[3]: 458.56GiB
Data,RAID6[5]: 144.07GiB
Data,RAID6[7]: 293.03GiB
Metadata,RAID10: 4.47GiB
Metadata,RAID10: 352.00MiB
Metadata,RAID10: 6.00GiB
Metadata,RAID1C3: 5.00GiB
System,RAID1C3: 32.00MiB
Unallocated: 85.79GiB
Another possibility (but the output will change drastically, I am thinking to another command)
Filesystem '/'
Data,RAID1: 123.45GiB
/dev/sda 12.34GiB
/dev/sdb 12.34GiB
Data,RAID1: 123.45GiB
/dev/sde 12.34GiB
/dev/sdf 12.34GiB
Data,RAID6: 123.45GiB
/dev/sda 12.34GiB
/dev/sdb 12.34GiB
/dev/sdc 12.34GiB
Data,RAID6: 123.45GiB
/dev/sdb 12.34GiB
/dev/sdc 12.34GiB
/dev/sdd 12.34GiB
/dev/sde 12.34GiB
/dev/sdf 12.34GiB
The number are the chunks sizes (invented). Note: for RAID5/RAID6 a chunk will uses near all disks; however for (e.g.) RAID1 there is the possibility that CHUNKS use different disks pairs (see the two RAID1 instances).
BR
G.Baroncelli
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