ANOKNUSA wrote:1) Please post /etc/fstab to give us an idea of how you mount your filesystems.2) How do you start X?
I would like to make use of Btrfs' transparent compression on an external drive.
Which tool is best for formatting the drive? Disk Utility or GParted?
How do I activate the compression? During formatting or when I mount the drive? I guess at mount time. I'm using usbmount to automatically mount newly attached devices, because nobody is logged in on the desktop.
I recently switched from Windows to Lubuntu as my sole OS.
My filesystem now has a NTFS partition with all my data (which I now would like to convert to EXT4), a EXT4 partition with Lubuntu on it and a swap partition.
I have a full backup of the data, so wiping the NTFS partition is not the problem. But I want to be sure that, after wiping/converting it I can still boot Lubuntu just as before.
A Beginner's Guide To btrfs
This guide shows how to work with the btrfs file system on Linux. It
covers creating and mounting btrfs file systems, resizing btrfs file
systems online, adding and removing devices, changing RAID levels,
creating subvolumes and snapshots, using compression and other things.
The idea of subvolumes defeats the purpose of separate partitions, those are soo 2001.Format it with GPT, create a subvol for / so you can do easy snapshotting and fallback.Don't put /var into a separate subvol as it contains your pacman db.But definately one for /home.And compress=lzo for all of them, the compression is smart and will not bother trying to compress things that can't be c
cfr wrote:So how does it test if it can achieve a good compression ratio?Since performance is also bad, when compression is disabled it doesn't matter. i guess i should edit my first post it would be interesting to know if somebody else sees this cpu-spikes when copying big files.
ccc1
https://bbs.archlinux.org/profile.php?id=24987
2013-05-02T01:14:11Z
When using the compress mount option, there's usually a message in dmesg with btrfs recognizing that compression is enabled.I guess one way to confirm compression is enabled is to do something likedd if=/dev/zero of=file bs=1M count=1024
btrfs fi sync /btrfsmountpoint
du -h file then check the file size.Also, I think it should be lzo and not Lzo.
Quote:
The advanced Butter/Better/B-tree Filesystem, Btrfs, is still labeled as experimental in the Btrfs Wiki and on Oracle's Btrfs page though the Oracle page looks outdated.
I performed a standard Debian install using wheezy/testing netinst iso for amd64. After the install completed I booted into a live environment so that I could snapshot the root as a btrfs subvolume named 'root'. To do so I renamed the /root directory to /rootuser temporarily however I am not able to move /rootuser back to /root in the new subvolume.
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