From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.virtall.com ([178.63.195.102]:56662 "EHLO mail.virtall.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751328AbbAHA1S (ORCPT ); Wed, 7 Jan 2015 19:27:18 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Date: Thu, 08 Jan 2015 09:27:14 +0900 From: Tomasz Chmielewski To: Satoru Takeuchi Cc: linux-btrfs Subject: Re: kernel BUG at /home/apw/COD/linux/fs/btrfs/inode.c:3123! In-Reply-To: <54ACD917.2050905@jp.fujitsu.com> References: <54ACD917.2050905@jp.fujitsu.com> Message-ID: Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 2015-01-07 15:58, Satoru Takeuchi wrote: >> Create subvolume './subvolume' >> # dd if=/dev/urandom of=bigfile.img bs=64k > > Does it really this command? I consider it will fill up > whole /dev/vdb. It normally would fill the fs if left for long, but I've pressed ctrl+c after about 6 GB. > And is it not subvolume/bigfile.img > but bigfile.img? If I recall correctly, it was not inside the subvolume. (...) >> 3127377920 bytes (3.1 GB) copied, 194.641 s, 16.1 MB/s > > If bigfile.img is just under /mnt/test, I can't understand > why this command succeeded to write more 3 GiB. The previous command wrote 6 GB, this one wrote 3.1 GB - there was still plenty of free space. (...) >> # dd if=/dev/urandom of=bigfile3.img bs=64k >> ^C3617580+0 records in >> 3617579+0 records out >> 237081657344 bytes (237 GB) copied, 14796 s, 16.0 MB/s > > It's too. This one was also left running for long, followed by ctrl+c (note the ^C in my pasted output). We didn't fill the fs 100% in any of these cases. >> # df -h >> Filesystem Size Used Avail Use% Mounted on >> (...) >> /dev/vdb 256G 230G 25G 91% /mnt/test >> >> >> # btrfs qgroup show /mnt/test >> qgroupid rfer excl >> -------- ---- ---- >> 0/5 16384 16384 >> 0/257 245960245248 245960245248 >> >> # ls -l >> total 240451584 >> -rw-r--r-- 1 root root 3127377920 Dec 19 20:06 bigfile2.img >> -rw-r--r-- 1 root root 237081657344 Dec 20 00:15 bigfile3.img >> -rw-r--r-- 1 root root 6013386752 Dec 19 20:02 bigfile.img >> >> # rm bigfile3.img >> >> # sync >> >> # dmesg >> (...) >> [ 95.055420] BTRFS: device fsid 97f98279-21e7-4822-89be-3aed9dc05f2c >> devid 1 transid 3 /dev/vdb >> [ 118.446509] BTRFS info (device vdb): disk space caching is enabled >> [ 118.446518] BTRFS: flagging fs with big metadata feature >> [ 118.452176] BTRFS: creating UUID tree >> [ 575.189412] BTRFS info (device vdb): qgroup scan completed >> [15948.234826] ------------[ cut here ]------------ >> [15948.234883] kernel BUG at >> /home/apw/COD/linux/fs/btrfs/inode.c:3123! >> [15948.234906] invalid opcode: 0000 [#1] SMP >> [15948.234925] Modules linked in: nf_log_ipv6 ip6t_REJECT >> nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter >> ip6_tables nf_log_ipv4 nf_log_common xt_LOG ipt_REJECT nf_reject_ipv4 >> xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack >> iptable_filter ip_tables x_tables dm_crypt btrfs xor crct10dif_pclmul >> crc32_pclmul ghash_clmulni_intel aesni_intel ppdev aes_x86_64 lrw >> raid6_pq gf128mul glue_helper ablk_helper cryptd serio_raw mac_hid >> pvpanic 8250_fintek parport_pc i2c_piix4 lp parport psmouse qxl ttm >> floppy drm_kms_helper drm >> [15948.235172] CPU: 0 PID: 3274 Comm: btrfs-cleaner Not tainted >> 3.18.1-031801-generic #201412170637 >> [15948.235193] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), >> BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org >> 04/01/2014 >> [15948.235222] task: ffff880036708a00 ti: ffff88007b97c000 task.ti: >> ffff88007b97c000 >> [15948.235240] RIP: 0010:[] [] >> btrfs_orphan_add+0x1a9/0x1c0 [btrfs] >> [15948.235305] RSP: 0018:ffff88007b97fc98 EFLAGS: 00010286 >> [15948.235318] RAX: 00000000ffffffe4 RBX: ffff88007b80a800 RCX: >> 0000000000000000 >> [15948.235333] RDX: 000000000000219e RSI: 0000000000040000 RDI: >> ffff880079418138 >> [15948.235349] RBP: ffff88007b97fcd8 R08: ffff88007fc1cae0 R09: >> ffff88007ad272d0 >> [15948.235366] R10: 0000000000000000 R11: 0000000000000010 R12: >> ffff88007a2d9500 >> [15948.235381] R13: ffff8800027d60e0 R14: ffff88007b80ac58 R15: >> 0000000000000001 >> [15948.235401] FS: 0000000000000000(0000) GS:ffff88007fc00000(0000) >> knlGS:0000000000000000 >> [15948.235418] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> [15948.235432] CR2: 00007f0489ff0000 CR3: 000000007a5e0000 CR4: >> 00000000001407f0 >> [15948.235464] Stack: >> [15948.235473] ffff88007b97fcd8 ffffffffc0497acf ffff88007b809800 >> ffff88003c207400 >> [15948.235498] ffff88007b809800 ffff88007ad272d0 ffff88007a2d9500 >> 0000000000000001 >> [15948.235521] ffff88007b97fd58 ffffffffc04412e0 ffff880079418000 >> 00000004c0427fea >> [15948.235551] Call Trace: >> [15948.235601] [] ? >> lookup_free_space_inode+0x4f/0x100 [btrfs] >> [15948.235642] [] >> btrfs_remove_block_group+0x140/0x490 [btrfs] >> [15948.235693] [] btrfs_remove_chunk+0x245/0x380 >> [btrfs] >> [15948.235731] [] >> btrfs_delete_unused_bgs+0x236/0x270 [btrfs] >> [15948.235771] [] cleaner_kthread+0x12c/0x190 >> [btrfs] >> [15948.235806] [] ? >> btrfs_destroy_all_delalloc_inodes+0x120/0x120 [btrfs] >> [15948.235844] [] kthread+0xc9/0xe0 >> [15948.235872] [] ? flush_kthread_worker+0x90/0x90 >> [15948.235900] [] ret_from_fork+0x7c/0xb0 >> [15948.235919] [] ? flush_kthread_worker+0x90/0x90 >> [15948.235933] Code: e8 7d a1 fc ff 8b 45 c8 e9 6d ff ff ff 0f 1f 44 >> 00 00 f0 41 80 65 80 fd 4c 89 ef 89 45 c8 e8 cf 20 fe ff 8b 45 c8 e9 >> 48 ff ff ff <0f> 0b 4c 89 f7 45 31 f6 e8 8a a2 35 c1 e9 f9 fe ff ff 0f >> 1f 44 >> [15948.236017] RIP [] btrfs_orphan_add+0x1a9/0x1c0 >> [btrfs] >> [15948.236017] RSP >> [15948.761942] ---[ end trace 0ccd21c265dce56b ]--- >> >> # ls >> bigfile2.img bigfile.img >> >> # touch 1 >> (...never returned...) >> Tomasz Chmielewski http://www.sslrack.com