From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.kundenserver.de ([212.227.126.187]:56470 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755602AbaLIGFw (ORCPT ); Tue, 9 Dec 2014 01:05:52 -0500 Message-ID: <5486913D.2010900@hiperscan.com> Date: Tue, 09 Dec 2014 07:05:49 +0100 From: Florian Stuelpner MIME-Version: 1.0 To: linux-btrfs@vger.kernel.org CC: =?UTF-8?B?ZnJhbnppc2thIE7DpHBlbHQ=?= Subject: cannot delete subvolumes Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi all, Our specifications are: - Debian 7.7 - kernel version: 3.17.4 Two weeks ago we started a btrfs balance. Some days later we stopped the balance. The messages log show some errors (see below). While balancing we removed some snapshots, this operations failed with a error messages. For example: ERROR: error accessing '/mnt/btrfs/snapshots/home/2014-10-23--20-31-18-@daily' Now there are some subvolumes without a owner, last modified date etc. . Additionally the ls command returns an error: stuelpner@hsad-srv-03:/boot$ ls -l /mnt/btrfs/snapshots/home/ ls: cannot access /mnt/btrfs/snapshots/home/2014-10-23--20-31-18-@daily: Cannot allocate memory total 0 drwxr-xr-x 1 root root 952 May 20 2014 2014-06-30--18-49-09-@monthly drwxr-xr-x 1 root root 952 May 20 2014 2014-07-01--02-52-01-@monthly drwxr-xr-x 1 root root 952 May 20 2014 2014-08-01--02-52-01-@monthly drwxr-xr-x 1 root root 990 Aug 28 07:00 2014-09-01--02-52-01-@monthly drwxr-xr-x 1 root root 990 Aug 28 07:00 2014-10-01--02-52-02-@monthly d????????? ? ? ? ? ? 2014-10-23--20-31-18-@daily drwxr-xr-x 1 root root 996 Oct 21 12:38 2014-11-01--02-52-01-@monthly This subvolumes cannot be access nor deleted: ~# btrfs subvolume delete /mnt/btrfs/snapshots/transfer/2014-10-21--20-50-44-\@daily Transaction commit: none (default) ERROR: error accessing '/mnt/btrfs/snapshots/transfer/2014-10-21--20-50-44-@daily' Filesystem info: ~# btrfs fi show Label: 'btrfs-data' uuid: 47a6ce34-6b63-4202-a7da-c1f6dbe48676 Total devices 4 FS bytes used 2.22TiB devid 1 size 2.73TiB used 2.42TiB path /dev/sda devid 2 size 2.73TiB used 2.42TiB path /dev/sdb devid 3 size 2.73TiB used 186.00GiB path /dev/sdc devid 4 size 2.73TiB used 186.00GiB path /dev/sdd Label: 'spectral-data' uuid: aaaba9e0-7710-4295-88b1-c0ee9bd2eff8 Total devices 2 FS bytes used 640.00KiB devid 1 size 238.47GiB used 2.03GiB path /dev/sdg devid 2 size 238.47GiB used 2.01GiB path /dev/sdh Btrfs v3.12 root@hsad-srv-03:~# btrfs fi df /mnt/btrfs Data, RAID1: total=2.32TiB, used=2.06TiB Data, single: total=8.00MiB, used=0.00B System, RAID1: total=8.00MiB, used=400.00KiB System, single: total=4.00MiB, used=0.00B Metadata, RAID1: total=287.00GiB, used=159.31GiB Metadata, single: total=8.00MiB, used=0.00B GlobalReserve, single: total=512.00MiB, used=0.00B message.log: Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323328] btrfs D ffff88083ed92dc0 0 7313 7296 0x00000000 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323335] ffff88068d816310 0000000000000082 ffff88083ae971d0 0000000000000086 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323340] 0000000000012dc0 0000000000012dc0 ffff88068d816310 ffff88058028ffd8 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323345] ffff88083ec12dc0 7fffffffffffffff 7fffffffffffffff 0000000000000002 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323351] Call Trace: Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323364] [] ? console_conditional_schedule+0xf/0xf Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323372] [] ? schedule_timeout+0x1c/0xf7 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323378] [] ? __queue_work+0x1ef/0x23d Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323384] [] ? __wait_for_common+0x120/0x158 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323390] [] ? try_to_wake_up+0x1c7/0x1c7 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323441] [] ? btrfs_async_run_delayed_refs+0xbd/0xda [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323475] [] ? __btrfs_end_transaction+0x2b3/0x2d6 [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323512] [] ? relocate_block_group+0x2a1/0x4cd [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323548] [] ? btrfs_relocate_block_group+0x14f/0x267 [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323584] [] ? btrfs_relocate_chunk.isra.58+0x58/0x5e2 [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323609] [] ? btrfs_item_key_to_cpu+0x12/0x30 [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323645] [] ? btrfs_get_token_64+0x76/0xc6 [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323681] [] ? release_extent_buffer+0x9d/0xa4 [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323717] [] ? btrfs_balance+0x9b0/0xb9d [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323752] [] ? btrfs_ioctl_balance+0x21a/0x297 [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323788] [] ? btrfs_ioctl+0x1134/0x20e5 [btrfs] Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323794] [] ? path_openat+0x233/0x4c5 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323801] [] ? __do_page_fault+0x339/0x3df Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323807] [] ? vma_link+0x6b/0x8a Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323813] [] ? do_vfs_ioctl+0x3ed/0x436 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323819] [] ? SyS_ioctl+0x49/0x77 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323824] [] ? page_fault+0x22/0x30 Nov 24 01:22:44 hsad-srv-03 kernel: [112256.323829] [] ? system_call_fastpath+0x16/0x1b Do you have an idea? Can you help us please? Regards, Florian