similar to: Converting 1-drive ext4 to 4-drive raid10 btrfs

Greetings, until yesterday I was running a btrfs filesystem across two 2.0 TiB disks in RAID1 mode for both metadata and data without any problems. As space was getting short I wanted to extend the filesystem by two additional drives lying around, which both are 1.0 TiB in size. Knowing little about the btrfs RAID implementation I thought I had to switch to RAID10 mode, which I was told is

Does not load. Wondering if this should work or has been moved ? Thanks, Anand -- 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 http://vger.kernel.org/majordomo-info.html

Hi What is the general state of btrfs RAID6 as of kernel 3.13-rc1 and the latest btrfs tools? More specifically: - Is it able to correct errors during scrubs? - Is it able to transparently handle disk failures without downtime? - Is it possible to convert btrfs RAID10 to RAID6 without recreating the fs? - Is it possible to add/remove drives to a RAID6 array? Regards, Hans-Kristian -- To

I''ve just pushed out a new integration branch to my git repo. This is purely bugfix patches -- there are no new features in this issue of the integration branch. I''ve got a stack of about a dozen more patches with new features in them still to go. I''ll be working on those tomorrow. As always, there''s minimal testing involved here, but it does at least compile on

Hi, my btrfs "hangs" when doing a balance operation. I''m using a 3.7.1 kernel from opensuse: linux-opzz 3.7.1-2.10-m4 #11 SMP PREEMPT Fri Jan 11 18:04:04 CET 2013 x86_64 x86_64 x86_64 GNU/Linux and Btrfs v0.19+ I did a scrub which completed without errors. Then I tried "btrfs filesystem balance /" which work fine for the first 23 of 46 chunks, then ist stopped

I came across the tidbit that ZFS has a contract guarantee that the data read back will either be correct (the checksum computed over the data read from the disk matches the checksum stored on disk), or you get an I/O error. Obviously, this greatly reduces the probability that the data is invalid. (Particularly when taken in combination with the disk firmware''s own ECC and checksumming.)

Hi, I wanted to create a new btrfs fs for my backups. When trying to mkfs.btrfs for that device, I''m getting "error checking /dev/loop2 mount status" With strace I see where the problem is: lstat("/dev/disk/by-id/ata-INTEL_SSDSA2M160G2GC_CVPO939201JX160AGN-par", 0x7fffa30b3cf0) = -1 ENOENT (No such file or directory) The problem is there is something missing

I have been experimenting exporting btrfs subvolumes over nfs. Main subvolume is filesys1 mounted at /filesys1. Below this is subvolume base, user1 is in base and documents is in user1. documents is mounted at /documents. /etc/exports is: /filesys1/base/user1 172.16.0.0/24(rw,no_acl,no_root_squash,fsid=0) /filesys1/user1-snapshot 172.16.0.0/24(rw,no_acl,no_root_squash,fsid=0)

After a reorganisation of patches, and sending a bunch of them to Chris, I''ve also updated the integration branch to match that. It''s available from: http://git.darksatanic.net/repo/btrfs-progs-unstable.git/ integration-20110630 The shortlog of 17 patches in this branch beyond the ones I''ve sent to Chris is below. Hugo. Andreas Philipp (1): print parent

Hi, I reported a bug to anaconda (rhbz 901905), but it might be btfs related. Anaconda does this: 18:49:10,317 INFO program: Running... mkfs.btrfs --data=single --label=fedora /dev/vdb1 /dev/vdc1 /dev/vdd1 /dev/vde1 18:49:10,742 INFO program: 18:49:10,746 INFO program: WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL 18:49:10,746 INFO program: WARNING! - see http://btrfs.wiki.kernel.org before

Hi list, I am using kernel 3.9.0, btrfs-progs 0.20-rc1-253-g7854c8b. I have a three disk array of level single: # btrfs fi sh Label: none uuid: 2e905f8f-e525-4114-afa6-cce48f77b629 Total devices 3 FS bytes used 3.80TB devid 1 size 2.73TB used 2.25TB path /dev/sdd devid 2 size 2.73TB used 1.55TB path /dev/sdc devid 3 size 2.73TB used 0.00 path /dev/sdb

i am looking at using btrfs for a new project and i have a few questions:     * i have heard that as it currently stands Btrfs has some issues to be used as a Lustre file system; is he aware of the issues and any plans to address these and integrate Btrfs in to Lustre     * any plans to support native clustering on Btrfs     * on ZFS the ZIL is a separate device, any plans to implement a the

I''m a little concerned about the size of my metadata. I''m doing raid10 on both data and metadata, and: hrm@vlad:mnt $ sudo btrfs fi df /mnt Data: total=488.01GB, used=487.23GB Metadata: total=3.01GB, used=677.73MB System: total=11.88MB, used=52.00KB hrm@vlad:mnt $ find /mnt | wc -l 20137 By my calculations, that''s something on the order of 17.5K per filesystem

Hi, i have some questions when using Btrfs on multi-devices: 1. a large file will always be stored wholely on a device or it may spread on some devices/partitions? Btrfs has option to specify it explicitly? 2. suppose i have a directory tree like that: Dir_1  |--> file_1A  |--> file_1B  |--> Dir_2          |--> file_2C          |--> file_2D If Dir_2, file_2C  on a failed device,

If there is no free space, the free space allocator will try to get space from the block group with the degenerated profile. For example, if there is no free space in the RAID1 block groups, the allocator will try to allocate space from the DUP block groups. And besides that, the space reservation has the similar behaviour: if there is no enough space in the space cache to reserve, it will reserve

Hello guys, i try to convert ext4 volume, but btrfs-convert show me error: "No valid Btrfs found on file unable to open ctree conversion aborted." Ubuntu 13.04 Kernel: 3.11 btrfs-progs git version 0.20-git20130822~194aa4a13 way to reproduce error: $ truncate -s 4G file $ mkfs.ext4 file #say yes to create fs on non block device. $ btrfs-convert file No valid Btrfs found on file unable

I''m having some trouble working out how to make the SDL interface for HVM domUs appear. The documentation simply says "it will appear" when you start the domU, but doesn''t state what packages or libraries are needed in order for this magic to happen, or explain how to debug it if it doesn''t happen. All that I''m getting at the moment is a domU (running

Hello all, I recently had a power failure and can no longer mount my /home directory. The harddrive has two BTRFS partitions: sda7(/) and sda8(/home). The / partition loads up just fine, but /home does not. I''ve tried btrfsck as shown below and I''ve included dmesg pertaining to btrfs. This is on ArchLinux and the software versions are as follows: btrfs-progs-unstable

Hi everyone, I''ve updated the master branch with the pending stable btrfs-progs commit that should make the 0.20 release. Thanks to Hugh for helping to queue up a few of them. We''ll have more frequent releases from here as we pull in the major new features going into progs (raid5/6, send/receive, quotas, fsck improvements). Please give it a shot and let me know if you see any

Hello! Today I downgraded from Ubuntu''s APT repo "oneiric-proposed" (which brings some kernel 3.0.0-13) back to the standard repo "oneiric". Now I''m not able to mount my btrfs / and /home (both on the same partition) anymore: device fsid SOME-UUID devid 1 transid 84229 /dev/dm-0 parent transid verify failed on 77078528 wanted 83774 found 84226