Btrfs is a new copy on write filesystem for Linux aimed at implementing advanced features while focusing on fault tolerance, repair and easy administration. Initially developed by Oracle, Btrfs is licensed under the GPL and open for contribution from anyone.

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896 views

How to layout the filesystem for a small SSD and a big HDD?

Since I don't use my laptop's CD-drive I want to put a small (8 GB) SSD into the CD-drive slot (I'll use a caddy similar to this one). I want to use compressed btrfs on the SSD and put all the data on ...
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votes
4answers
2k views

btrfs - Unknown filesystem?

Today when I went ahead with Natty installation I had selected btrfs for root filesystem. To my utter surprise I was presented with the screen Unknown filesystem grub rescue > None of the ...
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2answers
2k views

Resilience of Btrfs inside RAID5

Btrfs currently lacks fsck, risking corruption if there's a power failure. To what extent, if at all, would creating a btrfs filesystem within a RAID5 array mitigate this?
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2answers
10k views

How can I convert my root partition from BTRFS to EXT4?

Is it possible to convert btrfs to ext4 without losing data? I'm experiencing a very low speed on read/write operations on btrfs.
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votes
2answers
1k views

How can I solve my boot error with Natty and btrfs?

I'm getting this boot error on Natty: mount: mounting /dev on /root/dev failed: No such file or directory mount: mounting /sys on /root/sys failed: No such file or directory mount: mounting /proc on ...
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votes
3answers
3k views

btrfs snapshot management

1) Is there a gui or curses tool that allows you to view/manage btrfs subvols/snapshots? 2) Is there a utility or already made script that would automatically create and delete snapshots ...
6
votes
1answer
2k views

How does apt-btrfs-snapshot work?

I read on the planet that apt-btrfs-snapshot would be available for Natty. The brief description of what it does sounds very nice: it will automatically create filesystem snapshot (of everything ...
2
votes
0answers
1k views

How do I recover a BTRFS filesystem with “parent transid verify failed” errors? [closed]

I've got an external USB disk running btrfs. I use it for backups, and each time I do a backup I take a snapshot. However, it's giving me this error now: parent transid verify failed on 109973766144 ...
5
votes
2answers
816 views

Is there another way for me to backup /home/user other than creating a subvolume?

I think I'm having difficulty fully understanding subvolumes and snapshots. The /home partition is btrfs. I want to create a "backup" snapshot of /home/user (for example) but user has existed for ...
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vote
3answers
1k views

Using btrfs in RAID arrays and partitioning

Probably stupid questions but here goes: Can btrfs use only a portion of a HDD in a raid "array"? I have 3 HDDs: 80GB, 160GB, and 200GB external USB. I want to put root+boot in the first 20GB of the ...
0
votes
1answer
2k views

btrfs default file system for Natty? [duplicate]

Possible Duplicate: Will 11.04 use other filesystem than ext4? Will btrfs be the default file system in Natty Narwhal?
5
votes
1answer
3k views

What is the best way to partition, and what is the best file-system for a new Hard Disk? [duplicate]

Possible Duplicate: What's your recommendation on drive partitioning schemes for a desktop and home server? Is Btrfs in Maverick considered stable? Bonus: What is the "best" filesystem ...
2
votes
1answer
870 views

Does btrfs support thin provisioning and quota management like zfs?

I checked the btrfs command and didn't find anything related to thiese features.
3
votes
2answers
6k views

How to format btrfs partition?

How to format spare disk space to btrfs filesystem? I can't see btrfs in format dialog neither in gparted, nor in Disk Utility. Only Fat,ext2,ext3,ext4 etc.
8
votes
9answers
9k views

Trick installer to use btrfs root with compression

I want to install Maverick onto a BTRFS root partition. Not for fun or testing, but because I need compression due to a small flash disk (4GB). Now the 10.10 installer finally supports btrfs, but ...
14
votes
5answers
2k views

Is Btrfs in 10.10 considered stable?

I'm upgrading my laptop to Maverick (10.10) and I noticed btrfs is an option for the filesystem. I read a while ago that the Ubuntu team weren't sure if it was going to be stable for Maverick. Does ...
6
votes
3answers
1k views

What is btrfs? What advanced features does it have?

I heard that Kernel 2.6.35 will have btrfs and that Ubuntu 10.10 could have btrfs by default. What will be its features? Will I be able to migrate my data from my current ext4 partition?