btrfs scrub example

# /sbin/btrfs fi show /mnt/VB0250EAVER/

Label: ‘VB0250EAVER’ uuid: e76cefe1-7ce3-43fa-953a-31602616d9ca
Total devices 2 FS bytes used 106.34GiB
devid 1 size 232.88GiB used 109.03GiB path /dev/mapper/sdd
devid 2 size 232.88GiB used 109.01GiB path /dev/mapper/sde

Btrfs v3.18

# /sbin/btrfs scrub start -Bd /mnt/VB0250EAVER/

scrub device /dev/dm-3 (id 1) done
scrub started at Mon Mar 30 16:48:32 2015 and finished after 1150 seconds
total bytes scrubbed: 106.34GiB with 0 errors
scrub device /dev/mapper/sde (id 2) done
scrub started at Mon Mar 30 16:48:32 2015 and finished after 1133 seconds
total bytes scrubbed: 106.34GiB with 0 errors

# btrfs filesystem df /mnt/VB0250EAVER/

Data, RAID1: total=106.00GiB, used=104.84GiB
Data, single: total=8.00MiB, used=0.00B
System, RAID1: total=8.00MiB, used=16.00KiB
System, single: total=4.00MiB, used=0.00B
Metadata, RAID1: total=3.00GiB, used=1.50GiB
Metadata, single: total=8.00MiB, used=0.00B
GlobalReserve, single: total=512.00MiB, used=0.00B

Tag(s): btrfs
btrfs subvolumes and Snapshots

Just a mini old page about btrfs: subvolumes and snapshots

Tag(s): btrfs
Btrfs with Multiple Devices on LUKS

I’ve written down some simple (i hope) instructions on creating an encrypted btrfs raid1 disk !

My notes have the form of a mini howto, you can read all about them here:

Btrfs with Multiple Devices on LUKS

Time at hackerspace

I am a very proud member of Athen’s Hackerspace.

I am enjoying the entire 3+ years time (and money) that i’ve spend at this hackerspace. Love it.

Today was a very productive day.

With a good friend of mine, are working to setup an ansible, docker, btrfs workshop !

We want to contribute back to the community and we thought that this is a great opportunity.
We are not guru or anything like that - no, we just want to share the knowledge we are getting by spending time at hackerspace. Nothing more, nothing less. Just share our feedback to all the people that have helped us till now.

So, we are working together (collaboration) by making small steps towards to build these workshop.
Today’s work: Creating a tiny compressed archlinux docker image.

My instruction set is documented here: archlinux installation for docker.

Hopefully my next blog post will be about a simple ssh docker file.
We are trying to keep simple notes so that many people can read and use them.

mini Btrfs workshop at HSGR

Click here Mini Btrfs workshop

Open participation / free entry

Tag(s): btrfs, hsgr