I'm getting a strange error quark 11 on renaming my filesystems on Ubuntu 12.10 64. I'm sure 100% I've already done it in the past without issues using the disk utility. Maybe some recent upgrade or I don't know what, but now I get an error:
Don't know how to change label on device of type filesystem:btrfs (udisks-error-quark, 11))
It's not critical to me, but you may find it useful for the records. I've not been able to find anything around about this quark 11 error.
I chose btrfs as the format of my / filesystem in the Ubuntu 12.04 LTS installer. After the installation completed, I added compress=lzo to the mount options in /etc/fstab and rebooted.
Will the existing files be automatically compressed now, or must I explicitly do something to cause that to happen?
My /home partition consists of an entire physical disk. It is formatted as btrfs. I want to snapshot it. I'm confused regarding subvolume naming, in particular.
I am aware that there are similar questions, but each similar question seems to be asking something different from what I'm asking (and they are older, which means probably outdated, given the rapid development of btrfs). For example, the answer to this question is apparently not the answer to my question because my /home partition is a separate volume and the man page for btrfs shows a different command for creating snapshots now.
another similar problem, no solid solution.
someone else as confused as me on the naming issues
Starting simple: is this the correct command to take a simple snapshot of my home partition?
btrfs subvolume snapshot /home/@home /home/@home_snapshot_20120421
I got really brave and tested it and it does not work. The error is error accessing /home/@home. As shown below, @home is listed.
I'm obviously confused on subvolume names. Do I need to use them in creating snapshots? Some examples show taking snapshots of home using /home as the source parameter, but based on examples of root volumes, it seems to me that I need to use /home/@home.
Would this command work? And if not, why?
btrfs subvolume snapshot /home /home/@home_snapshot_20120421
Is the @ just a naming convention? Is it meaningful at all?
Here's some output that may be relevant:
btrfs subvolume list /home
ID 256 top level 5 path @home
I'm not sure what that means, exactly. When I try btrfs device scan it gives an error (e.g. unable to scan the device /dev/sda1). My file system doesn't have any errors. Everything is fine.
Here are my partitions. In response to one reply, no /home is not my only btrfs partition.
/dev/sda1: (boot partition) TYPE="ext2"
/dev/sda2: (root partition) TYPE="btrfs"
/dev/sdb1: (home partition) TYPE="btrfs"
/dev/sdc1: (shared partition) TYPE="btrfs"
/dev/sdc2: TYPE="swap"
I've installed Ubuntu without creating a swap partition and with / on a btrfs.# Now I get the message "Sparse file is not allowed" on each boot. This message appears before the splash-screen. Is there a way to kill this warning?
I have my /home on a BTRFS partition and I need to shrink it.
Unfortunately, Gparted does not have the resize option for this FS.
Can I resize it in any other way without losing my data?