Hello there,
I'm running a btrfs RAID-1 on two 128GB SSDs that were getting kind
of full. I found two 256GB SSDs that I plan to use to replace the 128TB
versions.
I've managed to do the actual swap using a series of btrfs replace
commands with no special arguments, and the system is now live and
booting from the 256GB drives. However, I haven't actually noticed any
difference in btrfs fi show output, and usage looks weird. Has anyone
seen this before or have a clue as to who?
The relevant partition sizes are now (sdb is identical):
/dev/sda1 * 2048 83888127 41943040 83 Linux
/dev/sda3 92276736 427821055 167772160 83 Linux
Here's the show output:
Label: 'root' uuid: 670d1132-00dc-4511-a2f6-d28ce08b4d3a
Total devices 2 FS bytes used 9.33GiB
devid 1 size 13.97GiB used 11.78GiB path /dev/sda1
devid 2 size 13.97GiB used 11.78GiB path /dev/sdb1
Label: 'var' uuid: 815b3280-e90f-483a-b244-1d2dfe9b6e67
Total devices 2 FS bytes used 56.14GiB
devid 1 size 80.00GiB used 80.00GiB path /dev/sda3
devid 2 size 80.00GiB used 80.00GiB path /dev/sdb3
Those sizes have not changed over the resize; i.e. the original sda1/sdb1 pair
was 14GB and the sda3/sdb3 pair was 80GB, and after the replace, they haven't
changed.
And usage for / is now weird:
Overall:
Device size: 27.94GiB
Device allocated: 21.56GiB
Device unallocated: 6.38GiB
Device missing: 0.00B
Used: 18.66GiB
Free (estimated): 3.99GiB (min: 3.99GiB)
Data ratio: 2.00
Metadata ratio: 2.00
Global reserve: 208.00MiB (used: 0.00B)
Data,RAID1: Size:9.00GiB, Used:8.20GiB
/dev/sda1 9.00GiB
/dev/sdb1 9.00GiB
Metadata,RAID1: Size:1.75GiB, Used:1.13GiB
/dev/sda1 1.75GiB
/dev/sdb1 1.75GiB
System,RAID1: Size:32.00MiB, Used:16.00KiB
/dev/sda1 32.00MiB
/dev/sdb1 32.00MiB
Usage for /var also looks wrong, but in a different way:
Overall:
Device size: 160.00GiB
Device allocated: 160.00GiB
Device unallocated: 2.00MiB
Device missing: 0.00B
Used: 112.28GiB
Free (estimated): 21.20GiB (min: 21.20GiB)
Data ratio: 2.00
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 0.00B)
Data,RAID1: Size:74.97GiB, Used:53.77GiB
/dev/sda3 74.97GiB
/dev/sdb3 74.97GiB
Metadata,RAID1: Size:5.00GiB, Used:2.37GiB
/dev/sda3 5.00GiB
/dev/sdb3 5.00GiB
System,RAID1: Size:32.00MiB, Used:16.00KiB
/dev/sda3 32.00MiB
/dev/sdb3 32.00MiB
Unallocated:
/dev/sda3 1.00MiB
/dev/sdb3 1.00MiB
Version information:
async@riff:~$ uname -a
Linux riff 4.2.0-30-generic #36~14.04.1-Ubuntu SMP Fri Feb 26 18:49:23
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
async@riff:~$ btrfs --version
btrfs-progs v4.0
Thanks,
--
Christian Robottom Reis | [+55 16] 3376 0125 | http://async.com.br/~kiko
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