On Mon, Mar 03, 2014 at 05:23:43PM +0000, Mike Russo wrote: > Hi guys - > I'm trying to convert a disk from single (/dev/sdc1) to RAID1 (dev/sdd1), and the filesystem was previously ext4 but the conversion seemed to go just fine, and I have no snapshots. System and metadata convert, and almost all my data converts, but there are 70 stubborn GB (14 blocks of 5GB each) that refuse to convert and I get ENOSPC errors when trying to reallocate them. This is just a guess, but you might have some large (>1GB) extents in there that span across multiple chunks. I'd suggest running a btrfs defrag on any particularly big files and see if that helps the situation. Hugo. > Here's my vital stats: (on kernel 3.14-rc4): > > root@ossy:/usr/src/btrfs-progs# /usr/src/btrfs-progs/btrfs fi show > Label: MyBook uuid: c99cbefb-6a56-41e2-8f99-19f8b5f67884 > Total devices 2 FS bytes used 1.09TiB > devid 1 size 1.82TiB used 1.12TiB path /dev/sdc1 > devid 2 size 1.82TiB used 1.05TiB path /dev/sdd1 > > Btrfs v3.12 > root@ossy:/usr/src/btrfs-progs# /usr/src/btrfs-progs/btrfs fi df /mymedia > Data, RAID1: total=1.04TiB, used=1.03TiB > Data, single: total=70.00GiB, used=64.98GiB > System, RAID1: total=32.00MiB, used=160.00KiB > Metadata, RAID1: total=2.00GiB, used=1.33GiB > > > I've already done a -dusage=0 and -dusage=5 balance and that cleans up anything that gets left around when these 14 blocks fail get moved. When mounting with enospc_debug I get messages like this for each block with the problem: > > > Mar 3 11:58:16 ossy kernel: [52724.423024] BTRFS: block group 935262683136 has 5368709120 bytes, 5321801728 used 0 pinned 0 reserved [readonly] > Mar 3 11:58:16 ossy kernel: [52724.423025] BTRFS info (device sdd1): block group has cluster?: no > Mar 3 11:58:16 ossy kernel: [52724.423026] BTRFS info (device sdd1): 0 blocks of free space at or bigger than bytes is > Mar 3 11:58:16 ossy kernel: [52724.423027] BTRFS: block group 942778875904 has 5368709120 bytes, 5309296640 used 0 pinned 0 reserved [readonly] > Mar 3 11:58:16 ossy kernel: [52724.423028] BTRFS info (device sdd1): block group has cluster?: no > Mar 3 11:58:16 ossy kernel: [52724.423029] BTRFS info (device sdd1): 0 blocks of free space at or bigger than bytes is > > I don't have the space to reformat and if this is a genuine bug I'm sure you guys want to fix it too. What else can I do to resolve or help? > > > Sincerely, > > Michael Russo, Systems Engineer > PaperSolve, Inc. > 268 Watchogue Road > Staten Island, NY 10314 > -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 65E74AC0 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- Nothing wrong with being written in Perl... Some of my best --- friends are written in Perl.
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