Dear list, i'm seeing btrfs no space messages frequently on big filesystems (> 30TB).
In all cases i'm getting a trace like this one a space_info warning. (since commit [1]). Could someone please be so kind and help me debugging / fixing this bug? I'm using space_cache=v2 on all those systems. ------------[ cut here ]------------ WARNING: CPU: 5 PID: 26421 at fs/btrfs/extent-tree.c:5710 btrfs_free_block_groups+0x35a/0x400 [btrfs]() Modules linked in: netconsole ipt_REJECT nf_reject_ipv4 mpt3sas raid_class scsi_transport_sas xt_multiport iptable_filter ip_tables x_tables 8021q garp bonding coretemp loop i40e(O) vxlan ip6_udp_tunnel usbhid udp_tunnel sb_edac ehci_pci edac_core ehci_hcd i2c_i801 i2c_core usbcore shpchp usb_common ipmi_si ipmi_msghandler button btrfs dm_mod raid1 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq md_mod ixgbe mdio sg sd_mod ahci ptp libahci megaraid_sas pps_core CPU: 5 PID: 26421 Comm: umount Tainted: G W O 4.4.15+43-ph #1 Hardware name: Supermicro X10DRH/X10DRH-iT, BIOS 1.0c 02/18/2015 0000000000000000 ffff880ae8b47cd8 ffffffffbd3c712f 0000000000000000 ffffffffc03ec603 ffff880ae8b47d18 ffffffffbd0837e7 00000047a0000000 0000000000000000 ffff8806016a1400 ffff8808881d2088 ffff8808881d2000 Call Trace: [<ffffffffbd3c712f>] dump_stack+0x63/0x84 [<ffffffffbd0837e7>] warn_slowpath_common+0x97/0xe0 [<ffffffffbd08384a>] warn_slowpath_null+0x1a/0x20 [<ffffffffc034a17a>] btrfs_free_block_groups+0x35a/0x400 [btrfs] [<ffffffffc035ba4b>] close_ctree+0x15b/0x330 [btrfs] [<ffffffffc03291f9>] btrfs_put_super+0x19/0x20 [btrfs] [<ffffffffbd1cd33f>] generic_shutdown_super+0x6f/0x100 [<ffffffffbd1cd866>] kill_anon_super+0x16/0x30 [<ffffffffc032f96a>] btrfs_kill_super+0x1a/0xb0 [btrfs] [<ffffffffbd1cda31>] deactivate_locked_super+0x51/0x90 [<ffffffffbd1ce42e>] deactivate_super+0x4e/0x70 [<ffffffffbd1e9373>] cleanup_mnt+0x43/0x90 [<ffffffffbd1e9412>] __cleanup_mnt+0x12/0x20 [<ffffffffbd09ef8e>] task_work_run+0x7e/0xa0 [<ffffffffbd07e550>] exit_to_usermode_loop+0x66/0x95 [<ffffffffbd002a56>] syscall_return_slowpath+0xa6/0xf0 [<ffffffffbd6b6f4c>] int_ret_from_sys_call+0x25/0x8f ---[ end trace bd985b05cc90617f ]--- ------------[ cut here ]------------ WARNING: CPU: 5 PID: 26421 at fs/btrfs/extent-tree.c:5711 btrfs_free_block_groups+0x3f4/0x400 [btrfs]() Modules linked in: netconsole ipt_REJECT nf_reject_ipv4 mpt3sas raid_class scsi_transport_sas xt_multiport iptable_filter ip_tables x_tables 8021q garp bonding coretemp loop i40e(O) vxlan ip6_udp_tunnel usbhid udp_tunnel sb_edac ehci_pci edac_core ehci_hcd i2c_i801 i2c_core usbcore shpchp usb_common ipmi_si ipmi_msghandler button btrfs dm_mod raid1 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq md_mod ixgbe mdio sg sd_mod ahci ptp libahci megaraid_sas pps_core CPU: 5 PID: 26421 Comm: umount Tainted: G W O 4.4.15+43-ph #1 Hardware name: Supermicro X10DRH/X10DRH-iT, BIOS 1.0c 02/18/2015 0000000000000000 ffff880ae8b47cd8 ffffffffbd3c712f 0000000000000000 ffffffffc03ec603 ffff880ae8b47d18 ffffffffbd0837e7 00000047a0000000 0000000000000000 ffff8806016a1400 ffff8808881d2088 ffff8808881d2000 Call Trace: [<ffffffffbd3c712f>] dump_stack+0x63/0x84 [<ffffffffbd0837e7>] warn_slowpath_common+0x97/0xe0 [<ffffffffbd08384a>] warn_slowpath_null+0x1a/0x20 [<ffffffffc034a214>] btrfs_free_block_groups+0x3f4/0x400 [btrfs] [<ffffffffc035ba4b>] close_ctree+0x15b/0x330 [btrfs] [<ffffffffc03291f9>] btrfs_put_super+0x19/0x20 [btrfs] [<ffffffffbd1cd33f>] generic_shutdown_super+0x6f/0x100 [<ffffffffbd1cd866>] kill_anon_super+0x16/0x30 [<ffffffffc032f96a>] btrfs_kill_super+0x1a/0xb0 [btrfs] [<ffffffffbd1cda31>] deactivate_locked_super+0x51/0x90 [<ffffffffbd1ce42e>] deactivate_super+0x4e/0x70 [<ffffffffbd1e9373>] cleanup_mnt+0x43/0x90 [<ffffffffbd1e9412>] __cleanup_mnt+0x12/0x20 [<ffffffffbd09ef8e>] task_work_run+0x7e/0xa0 [<ffffffffbd07e550>] exit_to_usermode_loop+0x66/0x95 [<ffffffffbd002a56>] syscall_return_slowpath+0xa6/0xf0 [<ffffffffbd6b6f4c>] int_ret_from_sys_call+0x25/0x8f ---[ end trace bd985b05cc906180 ]--- ------------[ cut here ]------------ WARNING: CPU: 5 PID: 26421 at fs/btrfs/extent-tree.c:9990 btrfs_free_block_groups+0x2a4/0x400 [btrfs]() Modules linked in: netconsole ipt_REJECT nf_reject_ipv4 mpt3sas raid_class scsi_transport_sas xt_multiport iptable_filter ip_tables x_tables 8021q garp bonding coretemp loop i40e(O) vxlan ip6_udp_tunnel usbhid udp_tunnel sb_edac ehci_pci edac_core ehci_hcd i2c_i801 i2c_core usbcore shpchp usb_common ipmi_si ipmi_msghandler button btrfs dm_mod raid1 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq md_mod ixgbe mdio sg sd_mod ahci ptp libahci megaraid_sas pps_core CPU: 5 PID: 26421 Comm: umount Tainted: G W O 4.4.15+43-ph #1 Hardware name: Supermicro X10DRH/X10DRH-iT, BIOS 1.0c 02/18/2015 0000000000000000 ffff880ae8b47cd8 ffffffffbd3c712f 0000000000000000 ffffffffc03ec603 ffff880ae8b47d18 ffffffffbd0837e7 ffff880c6aaa4528 0000000000000038 0000000000000000 ffff8802fe8d8c88 ffff8808881d2000 Call Trace: [<ffffffffbd3c712f>] dump_stack+0x63/0x84 [<ffffffffbd0837e7>] warn_slowpath_common+0x97/0xe0 [<ffffffffbd08384a>] warn_slowpath_null+0x1a/0x20 [<ffffffffc034a0c4>] btrfs_free_block_groups+0x2a4/0x400 [btrfs] [<ffffffffc035ba4b>] close_ctree+0x15b/0x330 [btrfs] [<ffffffffc03291f9>] btrfs_put_super+0x19/0x20 [btrfs] [<ffffffffbd1cd33f>] generic_shutdown_super+0x6f/0x100 [<ffffffffbd1cd866>] kill_anon_super+0x16/0x30 [<ffffffffc032f96a>] btrfs_kill_super+0x1a/0xb0 [btrfs] [<ffffffffbd1cda31>] deactivate_locked_super+0x51/0x90 [<ffffffffbd1ce42e>] deactivate_super+0x4e/0x70 [<ffffffffbd1e9373>] cleanup_mnt+0x43/0x90 [<ffffffffbd1e9412>] __cleanup_mnt+0x12/0x20 [<ffffffffbd09ef8e>] task_work_run+0x7e/0xa0 [<ffffffffbd07e550>] exit_to_usermode_loop+0x66/0x95 [<ffffffffbd002a56>] syscall_return_slowpath+0xa6/0xf0 [<ffffffffbd6b6f4c>] int_ret_from_sys_call+0x25/0x8f ---[ end trace bd985b05cc906181 ]--- BTRFS: space_info 4 has 18446743491956604928 free, is not full BTRFS: space_info total=307627032576, used=206629289984, pinned=0, reserved=0, may_use=682750558208, readonly=131072 Greets, Stefan [1] https://git.kernel.org/cgit/linux/kernel/git/kdave/linux.git/commit/?h=for-next&id=d555b6c380c644af63dbdaa7cc14bba041a4e4dd -- 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
