BTRFS migration - maby

[vinnywright]

I find that "usage" gives fairly close approximations to total HD usage:
[code]
:~$ sudo btrfs fi usage /
[sudo] password for jerry:
Overall:
Device size: 691.19GiB
Device allocated: 95.07GiB
Device unallocated: 596.12GiB
Device missing: 0.00B
Used: 92.33GiB
Free (estimated): 597.48GiB (min: 299.42GiB)
Data ratio: 1.00
Metadata ratio: 2.00
Global reserve: 159.48MiB (used: 0.00B)

Data,single: Size:92.01GiB, Used:90.64GiB
/dev/sda1 92.01GiB

Metadata,DUP: Size:1.50GiB, Used:863.64MiB
/dev/sda1 3.00GiB

System,DUP: Size:32.00MiB, Used:16.00KiB
/dev/sda1 64.00MiB

Unallocated:
/dev/sda1 596.12GiB
[/cpde]

yes it dose well at TOTAL usage of the btrfs file system ,,,,,,,but not just the running system .

I have 2 installs in this file system ,,,,so I am getting the combined usage of both installs in that output ,,,,and like I said "df" gives the same (approximately) usage ,,,,,,,saying / is using 9-10GB when in fact this install is using only 3.3GB as dolphin calculates it ,,,,if I mount /dev/sda1 first so I can see the subvolumes and right click>properties.

Humm

VINNY

[oshunluvr]

Vinny, what version of btrfs-tools btrfs-progs do you have? If it's greater than 4.5 you should be able to:

sudo btrfs fi du -s

I think this may work on the device rather than the mountpoint.

[oshunluvr]

Correction, it works on mount point. Running it here on a Kubuntu 17.04 virtual install (btrfs-progs v. 4.9.1-1) it shows;

5.12GiB for /
183.03MiB for /mnt/sda1/@home
5.24GiB for /mnt/sda1 (whole device)

[vinnywright]

Vinny, what version of btrfs-tools btrfs-progs do you have? If it's greater than 4.5 you should be able to:

sudo btrfs fi du -s

I think this may work on the device rather than the mountpoint.

btrfs-tools is what I have ver 4.4-1 ,,,,no du option

vinny@vinny-Bonobo-Extreme:~$ sudo btrfs fi du -s
[sudo] password for vinny: 
btrfs filesystem: unknown token 'du'
usage: btrfs filesystem [<group>] <command> [<args>]

  btrfs filesystem df [options] <path>
      Show space usage information for a mount point
  btrfs filesystem show [options] [<path>|<uuid>|<device>|label]
      Show the structure of a filesystem
  btrfs filesystem sync <path>
      Force a sync on a filesystem
  btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]
      Defragment a file or a directory
  btrfs filesystem resize [devid:][+/-]<newsize>[kKmMgGtTpPeE]|[devid:]max <path>
      Resize a filesystem
  btrfs filesystem label [<device>|<mount_point>] [<newlabel>]
      Get or change the label of a filesystem
  btrfs filesystem usage [options] <path> [<path>..]
      Show detailed information about internal filesystem usage .

on new Neon-lts

VINNY

[oshunluvr]

OK, thought maybe your were on Zesty.

[vinnywright]

OK, thought maybe your were on Zesty.

Aaa good point lets go try that ,,,,,,,,,,,,,,,,,,,,,

VINNY

[GreyGeek]

What's the story on btrfs-progs?
I see from the launchpad site here that version 4.9.1 (in the Other section) for Xenial is available.

Install btrfs-progs and leave them both, or remove btrfs-tools?

[oshunluvr]

Seems like its the same package that got renamed after 4.4 or so. See the Ubuntu page and look at the various versions. Xenial and before it's btrfs-tools, Yakkety and after it's btrfs-progs

[oshunluvr]

According to Glenn Washburn's PPA, btrfs-tools is now a "transitional dummy package"

[oshunluvr]

I added his PPA, run update/upgrade and it installed btrfs-progs and upgraded btrfs-tools (likely for compatibility):

$ sudo btrfs fi du -s /
Total       Exclusive    Set shared   Filename
150.71GiB   122.51GiB    13.34GiB        /

[GreyGeek]

Thanks, Oshunluver! I'm going to do the same.
I am getting ready to convert my two internal drives to a RAID1 system.

[#]BTRFS[/#]

[oshunluvr]

[FONT=monospace][COLOR=#000000]$ sudo btrfs fi du -s /subvol/*[/COLOR]
    Total   Exclusive  Set shared  Filename
 30.46GiB     2.26GiB    13.34GiB  /subvol/@KDEneon
103.74GiB   103.74GiB   144.00KiB  /subvol/@KDEneon_home
 10.19GiB    10.19GiB       0.00B  /subvol/@Kubuntu_16_04
  3.46GiB     3.46GiB       0.00B  /subvol/@Kubuntu_16_04_home

[/FONT]

[GreyGeek]

Mine took about 45 seconds to finish:

[FONT=monospace][COLOR=#000000]:[/COLOR][COLOR=#5454FF][B]~[/B][/COLOR][COLOR=#000000]$ [B]sudo btrfs fi du -s /  [/B][/COLOR]
     Total   Exclusive  Set shared  Filename
  87.93GiB     1.01GiB    86.91GiB  /
[/FONT][FONT=monospace]
[/FONT]

[FONT=monospace][COLOR=#000000]:[/COLOR][COLOR=#5454FF][B]~[/B][/COLOR][COLOR=#000000]$ [B]sudo mount /dev/sda1 /mnt[/B][/COLOR]
[COLOR=#000000]:[/COLOR][COLOR=#5454FF][B]~[/B][/COLOR][COLOR=#000000]$ [B]sudo btrfs fi du -s /mnt/@[/B][/COLOR]
     Total   Exclusive  Set shared  Filename
  11.75GiB   586.84MiB    11.18GiB  /mnt/@

[COLOR=#000000]:[/COLOR][COLOR=#5454FF][B]~[/B][/COLOR][COLOR=#000000]$[B] sudo btrfs fi du -s /mnt/@home[/B][/COLOR]
     Total   Exclusive  Set shared  Filename
  76.17GiB   453.05MiB    75.73GiB  /mnt/@home
[/FONT]

[vinnywright]

Kubuntu-17.04 ,,,,,,,

btrfs-progs/zesty,now 4.9.1-1ubuntu1 amd64 [installed]
 Checksumming Copy on Write Filesystem utilities

vinny@vinny-Bonobo-Extreme:~$ sudo btrfs fi du -s /
    Total   Exclusive  Set shared  Filename
  5.50GiB     5.50GiB       0.00B  /

vinny@vinny-Bonobo-Extreme:~$ sudo mkdir /mnt/sda1
vinny@vinny-Bonobo-Extreme:~$ sudo mount -t btrfs /dev/sda1 /mnt/sda1

and dolphin closely agrees at 5.2GIB



VINNY

[GreyGeek]

"du -s" does the trick!

My raid1 system is performing beautifully!