On 4/13/20 12:28 PM, Joshua Houghton wrote:
On Monday, 13 April 2020 10:08:50 UTC Joshua Houghton wrote:
On Wednesday, 18 March 2020 21:11:56 UTC Goffredo Baroncelli wrote:
Hi all,
this patch adds support for the raid5/6 profiles in the command
'btrfs filesystem usage'.
[...]
[...]
Hi Goffredo
Thanks you for this. It's something I've been wanting for a while. Do
you know why I get significantly different results in the overall summary
when I do not run it as root. I'm not sure if this is a bug or a
limitation.
When I run it as root it looks to be showing the correct values.
joshua@r2400g:~/development/btrfs-progs$ colordiff -u <(./btrfs fi us
/mnt/raid/) <(sudo ./btrfs fi us /mnt/raid/) WARNING: cannot read detailed
chunk info, per-device usage will not be shown, run as root --- /dev/fd/63
2020-04-13 10:54:26.833747190 +0100
+++ /dev/fd/62 2020-04-13 10:54:26.843746984 +0100
@@ -1,17 +1,32 @@
Overall:
Device size: 29.11TiB
- Device allocated: 284.06GiB
- Device unallocated: 28.83TiB
- Device missing: 29.11TiB
- Used: 280.99GiB
- Free (estimated): 0.00B (min: 14.95TiB)
- Data ratio: 0.00
+ Device allocated: 19.39TiB
+ Device unallocated: 9.72TiB
+ Device missing: 0.00B
+ Used: 18.67TiB
+ Free (estimated): 7.82TiB (min: 5.39TiB)
+ Data ratio: 1.33
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 0.00B)
Data,RAID5: Size:14.33TiB, Used:13.80TiB (96.27%)
+ /dev/mapper/traid3 4.78TiB
+ /dev/mapper/traid1 4.78TiB
+ /dev/mapper/traid2 4.78TiB
+ /dev/mapper/traid4 4.78TiB
Metadata,RAID1: Size:142.00GiB, Used:140.49GiB (98.94%)
+ /dev/mapper/traid3 63.00GiB
+ /dev/mapper/traid1 64.00GiB
+ /dev/mapper/traid2 63.00GiB
+ /dev/mapper/traid4 94.00GiB
System,RAID1: Size:32.00MiB, Used:1.00MiB (3.12%)
+ /dev/mapper/traid1 32.00MiB
+ /dev/mapper/traid4 32.00MiB
+Unallocated:
+ /dev/mapper/traid3 2.44TiB
+ /dev/mapper/traid1 2.44TiB
+ /dev/mapper/traid2 2.44TiB
+ /dev/mapper/traid4 2.41TiB
This is in contrast to raid1 which seems to be mostly correct, irrespective
of what user I run as.
joshua@arch:/var/joshua$ colordiff -u <(btrfs fi us raid/) <(sudo btrfs fi
us raid/) WARNING: cannot read detailed chunk info, per-device usage will
not be shown, run as root --- /dev/fd/63 2020-04-13 09:52:54.630750079
+0000
+++ /dev/fd/62 2020-04-13 09:52:54.637416835 +0000
@@ -2,7 +2,7 @@
Device size: 8.00GiB
Device allocated: 1.32GiB
Device unallocated: 6.68GiB
- Device missing: 8.00GiB
+ Device missing: 0.00B
Used: 383.40MiB
Free (estimated): 3.55GiB (min: 3.55GiB)
Data ratio: 2.00
@@ -10,8 +10,17 @@
Global reserve: 3.25MiB (used: 0.00B)
Data,RAID1: Size:409.56MiB, Used:191.28MiB (46.70%)
+ /dev/loop0 409.56MiB
+ /dev/loop1 409.56MiB
Metadata,RAID1: Size:256.00MiB, Used:416.00KiB (0.16%)
+ /dev/loop0 256.00MiB
+ /dev/loop1 256.00MiB
System,RAID1: Size:8.00MiB, Used:16.00KiB (0.20%)
+ /dev/loop0 8.00MiB
+ /dev/loop1 8.00MiB
+Unallocated:
+ /dev/loop0 3.34GiB
+ /dev/loop1 3.34GiB
Does anyone know if this is something we can fix? I'm happy to take a look.
Joshua Houghton
Sorry missed this last bit never mind
If both are merged we will have a 'btrfs fi us'
commands with full support a raid5/6 filesystem without needing root
capability.
Unfortunately we need root to access the chunks information.
Thanks for giving an eye to that. I will "ping" the status of this patch
BR
G.Baroncelli
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