On Wed, Jul 03, 2013 at 11:37:09AM +0900, Tomasz Chmielewski wrote: > I've upgraded to linux 3.10 and enabled extended inode refs and skinny > metadata extent refs with these commands: > > btrfstune -r /dev/sdc1 > btrfstune -x /dev/sdc1 > > Since then, I have "WARNING: at fs/btrfs/backref.c:903 > find_parent_nodes+0x616/0x815 [btrfs]()" showing up like crazy: > > # grep -c "WARNING: at fs/btrfs/backref.c:903" syslog > 181819 > > That's after just a few hours of uptime. > > I guess that's not expected? > > > Some examples: > > Jul 2 21:42:59 bkp010 kernel: [ 668.547147] ------------[ cut here > ]------------ > Jul 2 21:42:59 bkp010 kernel: [ 668.547268] WARNING: at > fs/btrfs/backref.c:903 find_parent_nodes+0x616/0x815 [btrfs]() > Jul 2 21:42:59 bkp010 kernel: [ 668.547414] Modules linked in: veth > ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 > nf_nat nf_conntrack ip_tables x_tables cpufreq_ondemand cpufreq_conservative > cpufreq_powersave cpufreq_stats bridge stp llc ipv6 btrfs xor raid6_pq > zlib_deflate loop acpi_cpufreq mperf freq_table intel_powerclamp kvm_intel > kvm crc32_pclmul microcode ehci_pci ehci_hcd i2c_i801 pcspkr button video > i2c_core lpc_ich mfd_core ext4 crc16 jbd2 mbcache raid1 sg sd_mod ahci > libahci libata r8169 mii scsi_mod > Jul 2 21:42:59 bkp010 kernel: [ 668.549804] CPU: 1 PID: 7806 Comm: master > Not tainted 3.10.0 #1 > Jul 2 21:42:59 bkp010 kernel: [ 668.549899] Hardware name: System > manufacturer System Product Name/P8H77-M PRO, BIOS 1101 02/04/2013 > Jul 2 21:42:59 bkp010 kernel: [ 668.550047] ffffffffa0761cd8 > ffff8807ebb25b08 ffffffff81371348 ffff8807ebb25b48 > Jul 2 21:42:59 bkp010 kernel: [ 668.550331] ffffffff8102eaa3 > 0000000000001000 0000000000000000 ffff8807ef57e360 > Jul 2 21:42:59 bkp010 kernel: [ 668.550615] ffff8807ebb25bf0 > ffff8807e88131e0 ffff8807f33ac000 ffff8807ebb25b58 > Jul 2 21:42:59 bkp010 kernel: [ 668.550899] Call Trace: > Jul 2 21:42:59 bkp010 kernel: [ 668.550994] [<ffffffff81371348>] > dump_stack+0x19/0x1b > Jul 2 21:42:59 bkp010 kernel: [ 668.551090] [<ffffffff8102eaa3>] > warn_slowpath_common+0x62/0x7b > Jul 2 21:42:59 bkp010 kernel: [ 668.551185] [<ffffffff8102ead1>] > warn_slowpath_null+0x15/0x17 > Jul 2 21:42:59 bkp010 kernel: [ 668.551295] [<ffffffffa074e1d7>] > find_parent_nodes+0x616/0x815 [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.551407] [<ffffffffa0718dc7>] ? > btrfs_get_token_32+0x79/0xc7 [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.551517] [<ffffffffa074e452>] > btrfs_find_all_roots+0x7c/0xd7 [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.551625] [<ffffffffa06ec9a9>] ? > setup_items_for_insert+0x332/0x352 [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.551786] [<ffffffffa07513e9>] > btrfs_qgroup_account_ref+0x10c/0x44f [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.551948] [<ffffffffa06f316f>] > btrfs_delayed_refs_qgroup_accounting+0xab/0xdf [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.552106] [<ffffffffa0706896>] > __btrfs_end_transaction+0x49/0x281 [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.552214] [<ffffffffa0706af9>] > btrfs_end_transaction+0xb/0xd [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.552321] [<ffffffffa07097f5>] > __unlink_end_trans+0x5e/0x63 [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.552428] [<ffffffffa070e69f>] > btrfs_unlink+0x86/0xa0 [btrfs] > Jul 2 21:42:59 bkp010 kernel: [ 668.552526] [<ffffffff810ef004>] > vfs_unlink+0x6f/0xdc > Jul 2 21:42:59 bkp010 kernel: [ 668.552621] [<ffffffff810ef15e>] > do_unlinkat+0xed/0x199 > Jul 2 21:42:59 bkp010 kernel: [ 668.552717] [<ffffffff812c274e>] ? > sock_alloc_file+0xc2/0x116 > Jul 2 21:42:59 bkp010 kernel: [ 668.552819] [<ffffffff810fa429>] ? > __fd_install+0x1c/0x44 > Jul 2 21:42:59 bkp010 kernel: [ 668.552926] [<ffffffff810fa471>] ? > fd_install+0x20/0x22 > Jul 2 21:42:59 bkp010 kernel: [ 668.553033] [<ffffffff810f0f14>] > SyS_unlink+0x11/0x13 > Jul 2 21:42:59 bkp010 kernel: [ 668.553129] [<ffffffff81375812>] > system_call_fastpath+0x16/0x1b > Jul 2 21:42:59 bkp010 kernel: [ 668.553236] ---[ end trace 5bc755b97545ce9b > ]--- > > Jul 2 21:43:27 bkp010 kernel: [ 696.770152] ------------[ cut here > ]------------ > Jul 2 21:43:27 bkp010 kernel: [ 696.770264] WARNING: at > fs/btrfs/backref.c:903 find_parent_nodes+0x616/0x815 [btrfs]() > Jul 2 21:43:27 bkp010 kernel: [ 696.770424] Modules linked in: veth > ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 > nf_nat nf_conntrack ip_tables x_tables cpufreq_ondemand cpufreq_conservative > cpufreq_powersave cpufreq_stats bridge stp llc ipv6 btrfs xor raid6_pq > zlib_deflate loop acpi_cpufreq mperf freq_table intel_powerclamp kvm_intel > kvm crc32_pclmul microcode ehci_pci ehci_hcd i2c_i801 pcspkr button video > i2c_core lpc_ich mfd_core ext4 crc16 jbd2 mbcache raid1 sg sd_mod ahci > libahci libata r8169 mii scsi_mod > Jul 2 21:43:27 bkp010 kernel: [ 696.773645] CPU: 0 PID: 7863 Comm: > btrfs-endio-wri Tainted: G W 3.10.0 #1 > Jul 2 21:43:27 bkp010 kernel: [ 696.773926] Hardware name: System > manufacturer System Product Name/P8H77-M PRO, BIOS 1101 02/04/2013 > Jul 2 21:43:27 bkp010 kernel: [ 696.774141] ffffffffa0761cd8 > ffff8807eb111a48 ffffffff81371348 ffff8807eb111a88 > Jul 2 21:43:27 bkp010 kernel: [ 696.774576] ffffffff8102eaa3 > 0000000000001000 0000000000000000 ffff8807ff24c6c0 > Jul 2 21:43:27 bkp010 kernel: [ 696.774929] ffff8807eb111b30 > ffff8807e7402a80 ffff8807f33ac000 ffff8807eb111a98 > Jul 2 21:43:27 bkp010 kernel: [ 696.775250] Call Trace: > Jul 2 21:43:27 bkp010 kernel: [ 696.775381] [<ffffffff81371348>] > dump_stack+0x19/0x1b > Jul 2 21:43:27 bkp010 kernel: [ 696.775515] [<ffffffff8102eaa3>] > warn_slowpath_common+0x62/0x7b > Jul 2 21:43:27 bkp010 kernel: [ 696.775664] [<ffffffff8102ead1>] > warn_slowpath_null+0x15/0x17 > Jul 2 21:43:27 bkp010 kernel: [ 696.775795] [<ffffffffa074e1d7>] > find_parent_nodes+0x616/0x815 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.775946] [<ffffffffa074e452>] > btrfs_find_all_roots+0x7c/0xd7 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.776084] [<ffffffffa074fac4>] ? > qgroup_account_ref_step1+0xea/0x102 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.776285] [<ffffffffa07513e9>] > btrfs_qgroup_account_ref+0x10c/0x44f [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.776486] [<ffffffffa06f316f>] > btrfs_delayed_refs_qgroup_accounting+0xab/0xdf [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.776702] [<ffffffffa0706896>] > __btrfs_end_transaction+0x49/0x281 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.776832] [<ffffffffa06f4514>] ? > btrfs_block_rsv_release+0x49/0x4b [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.776945] [<ffffffffa0706af9>] > btrfs_end_transaction+0xb/0xd [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.777056] [<ffffffffa0711224>] > btrfs_finish_ordered_io+0x683/0x84e [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.777177] [<ffffffff810a3683>] ? > mempool_free_slab+0x12/0x14 > Jul 2 21:43:27 bkp010 kernel: [ 696.777304] [<ffffffff810a3717>] ? > mempool_free+0x72/0x7a > Jul 2 21:43:27 bkp010 kernel: [ 696.777449] [<ffffffffa073c357>] ? > end_compressed_bio_write+0xc0/0xc8 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.777648] [<ffffffffa07113ff>] > finish_ordered_fn+0x10/0x12 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.777787] [<ffffffffa072ab5c>] > worker_loop+0x15e/0x48e [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.777917] [<ffffffffa072a9fe>] ? > btrfs_queue_worker+0x267/0x267 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.778046] [<ffffffff81048ab2>] > kthread+0xb5/0xbd > Jul 2 21:43:27 bkp010 kernel: [ 696.778172] [<ffffffff810489fd>] ? > kthread_freezable_should_stop+0x43/0x43 > Jul 2 21:43:27 bkp010 kernel: [ 696.778294] [<ffffffff8137576c>] > ret_from_fork+0x7c/0xb0 > Jul 2 21:43:27 bkp010 kernel: [ 696.778401] [<ffffffff810489fd>] ? > kthread_freezable_should_stop+0x43/0x43 > Jul 2 21:43:27 bkp010 kernel: [ 696.779920] ---[ end trace 5bc755b97545ce9c > ]--- > > Jul 2 21:43:27 bkp010 kernel: [ 696.780031] ------------[ cut here > ]------------ > Jul 2 21:43:27 bkp010 kernel: [ 696.780136] WARNING: at > fs/btrfs/backref.c:903 find_parent_nodes+0x616/0x815 [btrfs]() > Jul 2 21:43:27 bkp010 kernel: [ 696.780282] Modules linked in: veth > ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 > nf_nat nf_conntrack ip_tables x_tables cpufreq_ondemand cpufreq_conservative > cpufreq_powersave cpufreq_stats bridge stp llc ipv6 btrfs xor raid6_pq > zlib_deflate loop acpi_cpufreq mperf freq_table intel_powerclamp kvm_intel > kvm crc32_pclmul microcode ehci_pci ehci_hcd i2c_i801 pcspkr button video > i2c_core lpc_ich mfd_core ext4 crc16 jbd2 mbcache raid1 sg sd_mod ahci > libahci libata r8169 mii scsi_mod > Jul 2 21:43:27 bkp010 kernel: [ 696.782624] CPU: 0 PID: 7863 Comm: > btrfs-endio-wri Tainted: G W 3.10.0 #1 > Jul 2 21:43:27 bkp010 kernel: [ 696.782769] Hardware name: System > manufacturer System Product Name/P8H77-M PRO, BIOS 1101 02/04/2013 > Jul 2 21:43:27 bkp010 kernel: [ 696.782917] ffffffffa0761cd8 > ffff8807eb111a48 ffffffff81371348 ffff8807eb111a88 > Jul 2 21:43:27 bkp010 kernel: [ 696.783200] ffffffff8102eaa3 > 0000000000001000 0000000000000000 ffff8807ff24c6c0 > Jul 2 21:43:27 bkp010 kernel: [ 696.783484] ffff8807eb111b30 > ffff8807e7402a80 ffff8807f33ac000 ffff8807eb111a98 > Jul 2 21:43:27 bkp010 kernel: [ 696.783767] Call Trace: > Jul 2 21:43:27 bkp010 kernel: [ 696.783858] [<ffffffff81371348>] > dump_stack+0x19/0x1b > Jul 2 21:43:27 bkp010 kernel: [ 696.783953] [<ffffffff8102eaa3>] > warn_slowpath_common+0x62/0x7b > Jul 2 21:43:27 bkp010 kernel: [ 696.784049] [<ffffffff8102ead1>] > warn_slowpath_null+0x15/0x17 > Jul 2 21:43:27 bkp010 kernel: [ 696.784154] [<ffffffffa074e1d7>] > find_parent_nodes+0x616/0x815 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.784262] [<ffffffffa074e452>] > btrfs_find_all_roots+0x7c/0xd7 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.784369] [<ffffffffa074fac4>] ? > qgroup_account_ref_step1+0xea/0x102 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.784525] [<ffffffffa07513e9>] > btrfs_qgroup_account_ref+0x10c/0x44f [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.784679] [<ffffffffa06f316f>] > btrfs_delayed_refs_qgroup_accounting+0xab/0xdf [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.784837] [<ffffffffa0706896>] > __btrfs_end_transaction+0x49/0x281 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.784943] [<ffffffffa06f4514>] ? > btrfs_block_rsv_release+0x49/0x4b [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.785050] [<ffffffffa0706af9>] > btrfs_end_transaction+0xb/0xd [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.785158] [<ffffffffa0711224>] > btrfs_finish_ordered_io+0x683/0x84e [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.785256] [<ffffffff810a3683>] ? > mempool_free_slab+0x12/0x14 > Jul 2 21:43:27 bkp010 kernel: [ 696.785351] [<ffffffff810a3717>] ? > mempool_free+0x72/0x7a > Jul 2 21:43:27 bkp010 kernel: [ 696.785458] [<ffffffffa073c357>] ? > end_compressed_bio_write+0xc0/0xc8 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.785637] [<ffffffffa07113ff>] > finish_ordered_fn+0x10/0x12 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.785744] [<ffffffffa072ab5c>] > worker_loop+0x15e/0x48e [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.785850] [<ffffffffa072a9fe>] ? > btrfs_queue_worker+0x267/0x267 [btrfs] > Jul 2 21:43:27 bkp010 kernel: [ 696.785947] [<ffffffff81048ab2>] > kthread+0xb5/0xbd > Jul 2 21:43:27 bkp010 kernel: [ 696.786042] [<ffffffff810489fd>] ? > kthread_freezable_should_stop+0x43/0x43 > Jul 2 21:43:27 bkp010 kernel: [ 696.786140] [<ffffffff8137576c>] > ret_from_fork+0x7c/0xb0 > Jul 2 21:43:27 bkp010 kernel: [ 696.786234] [<ffffffff810489fd>] ? > kthread_freezable_should_stop+0x43/0x43 > Jul 2 21:43:27 bkp010 kernel: [ 696.786331] ---[ end trace 5bc755b97545ce9d > ]---
- Btrfs: make backref walking code handle skinny metadata https://patchwork.kernel.org/patch/2800271/ This patch seems to address the WARNING. - liubo -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
