Hi, I tried 3.10.0-rc7 with the btrfs option skinny extents (btrfstune -x), I get this warning after a few seconds of ceph workload. -martin [ 1153.897960] ------------[ cut here ]------------ [ 1153.897977] WARNING: at fs/btrfs/backref.c:903 find_parent_nodes+0x107f/0x1090 [btrfs]() [ 1153.897978] Modules linked in: ipmi_devintf ipmi_si ipmi_msghandler btrfs zlib_deflate libcrc32c coretemp kvm_intel kvm ghash_clmulni_intel aesni_intel ablk_helper cryptd lrw gf128mul glue_helper aes_x86_64 bonding microcode psmouse serio_raw lpc_ich joydev ioatdma wmi mac_hid lp parport raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov hid_generic ses usbhid raid6_pq enclosure ixgbe hid async_tx dca e1000e raid1 mpt2sas ptp raid0 scsi_transport_sas pps_core multipath mdio raid_class megaraid_sas linear [ 1153.898004] CPU: 0 PID: 32374 Comm: btrfs-endio-wri Not tainted 3.10.0-rc7+ #8 [ 1153.898005] Hardware name: Supermicro X9SRL-F/X9SRL-F, BIOS 1.0b 09/19/2012 [ 1153.898006] ffffffffa04552ad ffff8807d2d1f9d8 ffffffff81636f29 ffff8807d2d1fa18 [ 1153.898008] ffffffff810404b0 0000000000000000 ffff8804602c04e0 0000000000000000 [ 1153.898010] ffff8808532a4028 dead000000100100 dead000000200200 ffff8807d2d1fa28 [ 1153.898013] Call Trace: [ 1153.898018] [<ffffffff81636f29>] dump_stack+0x19/0x1b [ 1153.898021] [<ffffffff810404b0>] warn_slowpath_common+0x70/0xa0 [ 1153.898023] [<ffffffff810404fa>] warn_slowpath_null+0x1a/0x20 [ 1153.898031] [<ffffffffa043b91f>] find_parent_nodes+0x107f/0x1090 [btrfs] [ 1153.898039] [<ffffffffa03f9184>] ? btrfs_get_token_64+0x64/0xf0 [btrfs] [ 1153.898047] [<ffffffffa043b9c9>] btrfs_find_all_roots+0x99/0x100 [btrfs] [ 1153.898054] [<ffffffffa03e77b0>] ? btrfs_submit_direct+0x6b0/0x6b0 [btrfs] [ 1153.898060] [<ffffffffa03e77b0>] ? btrfs_submit_direct+0x6b0/0x6b0 [btrfs] [ 1153.898067] [<ffffffffa043c2c5>] iterate_extent_inodes+0x135/0x250 [btrfs] [ 1153.898074] [<ffffffffa043c472>] iterate_inodes_from_logical+0x92/0xb0 [btrfs] [ 1153.898080] [<ffffffffa03e77b0>] ? btrfs_submit_direct+0x6b0/0x6b0 [btrfs] [ 1153.898086] [<ffffffffa03e4a98>] record_extent_backrefs+0x78/0xf0 [btrfs] [ 1153.898093] [<ffffffffa03ef706>] btrfs_finish_ordered_io+0x156/0x9c0 [btrfs] [ 1153.898097] [<ffffffff810512ca>] ? del_timer_sync+0x5a/0x70 [ 1153.898103] [<ffffffffa03eff85>] finish_ordered_fn+0x15/0x20 [btrfs] [ 1153.898110] [<ffffffffa040f5fa>] worker_loop+0x14a/0x520 [btrfs] [ 1153.898117] [<ffffffffa040f4b0>] ? btrfs_queue_worker+0x300/0x300 [btrfs] [ 1153.898121] [<ffffffff81066560>] kthread+0xc0/0xd0 [ 1153.898123] [<ffffffff810664a0>] ? flush_kthread_worker+0xb0/0xb0 [ 1153.898126] [<ffffffff816453dc>] ret_from_fork+0x7c/0xb0 [ 1153.898128] [<ffffffff810664a0>] ? flush_kthread_worker+0xb0/0xb0 [ 1153.898130] ---[ end trace 9ea90caaae31fcaa ]--- [ 1153.898148] ------------[ cut here ]------------ -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
