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Hello all, Is there any patches for btrfs to use enhanced area in eMMC (it will allow to boost performance i.e. it very useful to keep metadata within this area) ? If it''s exist let me know how to find it and use it. Thanks, -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at

Hi all, I have two multi-disk btrfs filesystems on a Arch linux 3.4.0 system. After a power failure, both filesystems refuse to mount [ 10.402284] Btrfs loaded [ 10.402714] device fsid 1e7c18a4-02d6-44b1-8eaf-c01378009cd3 devid 4 transid 65282 /dev/sdc [ 10.403108] btrfs: force zlib compression [ 10.403130] btrfs: enabling inode map caching [ 10.403152] btrfs: disk space caching is

For using SSDs: Are there any format/mount parameters that should be set for using btrfs on SSDs (other than the "ssd" mount option)? General questions: How long is the ''delay'' for the delayed alloc? Are file allocations aligned to 4kiB boundaries, or larger? What byte value is used to pad unused space? (Aside: For some, the erased state reads all 0x00, and for

Greetings, I have a few questions pertaining to BTRFS RAID. I know it''s been rumored a lot recently that kernel 3.4 will have RAID5/6 support, is this still the case. Also, is it possible to change from a single drive system to a raid system or even a multi drive system without raid to a raid system while there is data on the drives an successfully convert them without loosing data?

Hello, btrfs is failing to mount if I use the mount option acl. I am running debian testing with a debian experimental version of kernel 3.7.3: uname -a Linux nimby 3.7-trunk-486 #1 Debian 3.7.3-1~experimental.1 i686 GNU/Linux from fstab LABEL=btrfs-exthd /mnt/exthd btrfs defaults,noatime,compress=zlib,acl 0 2 from dmesg [ 14.785716] device label btrfs-exthd devid 1 transid

Hello, I''ve got a quick question: Does btrfs adapt to size changes of the underlying block device(s)? My specific situation is as follows: I''ve got a luks-volume on which I want to put btrfs. If this luks-volume grows in the future (i.e. by ''cryptsetup resize''), will btrfs automatically (and reliably) "see" this and be able to use the additional

Hi all, below a configuration for udev/initramfs which I propose to scan the block devices looking for a multi-volume btrfs filesystem. Btrfs has the capability to span a file-system on multiple device. In order to do that, the involved devices have to be "registered" in the kernel. In order to do that there are two options: # btrfs device scan <device> (or the old

At the beginning of August, Mikulas Patocka posted to linux-kernel mailing list about adding snapshot merging to LVM[1]. Basicaly, snapshot merging means that it is possible to turn a snapshot back into its origin. Using LVM, however, means that you need to have free place outside of the filesystem (i.e., in physical volume) to make snapshots, which is not always possible on workstations and

If we''ve abandoned the idea of putting the number of redundant blocks into the top bits of the type bitmask (and I hope we have), then we''re fairly much there. Current code is at: git://, http://git.infradead.org/users/dwmw2/btrfs-raid56.git git://, http://git.infradead.org/users/dwmw2/btrfs-progs-raid56.git We have recovery working, as well as both full-stripe writes

Here are patches to do offline deduplication for Btrfs. It works well for the cases it''s expected to, I''m looking for feedback on the ioctl interface and such, I''m well aware there are missing features for the userspace app (like being able to set a different blocksize). If this interface is acceptable I will flesh out the userspace app a little more, but I believe the