Just for performance tests I run:
./bonnie++ -d /mnt/btrfs -s0 -n 1:256:256:1 -r 0
and this causes and endless number of stack traces. Those seem to
come from:
use_block_rsv()
ret = block_rsv_use_bytes(block_rsv, blocksize);
if (!ret)
return block_rsv;
if (ret) {
WARN_ON(1);
ret = reserve_metadata_bytes(trans, root, block_rsv, blocksize,
Why is there a WARN_ON(1)? Running the bonnie benchmark is basically impossible
that.
Thanks,
Bernd
> Aug 19 18:30:56 fslab2 kernel: [ 265.255644] Loglevel set to 9
> Aug 19 18:31:26 fslab2 kernel: [ 295.490858] ------------[ cut here ]------------
> Aug 19 18:31:26 fslab2 kernel: [ 295.495589] WARNING: at fs/btrfs/extent-tree.c:5711 btrfs_alloc_free_block+0x200/0x360 [btrfs]()
> Aug 19 18:31:26 fslab2 kernel: [ 295.504472] Hardware name: H8DCE
> Aug 19 18:31:26 fslab2 kernel: [ 295.507750] Modules linked in: nfsd ib_umad rdma_ucm rdma_cm iw_cm ib_addr ib_uverbs sg ib_ipoib ib_cm ib_sa ip
> v6 sd_mod crc_t10dif loop arcmsr md_mod ib_mthca ib_mad pcspkr ib_core 8250_pnp fuse af_packet nfs lockd fscache auth_rpcgss nfs_acl sunrpc btrfs
> lzo_decompress lzo_compress zlib_deflate crc32c libcrc32c crypto_hash crypto_algapi ata_generic pata_acpi e1000 pata_amd sata_nv libata scsi_mod
> unix [last unloaded: scsi_wait_scan]
> Aug 19 18:31:26 fslab2 kernel: [ 295.548618] Pid: 2074, comm: bonnie++ Not tainted 3.1.0-rc2+ #34
> Aug 19 18:31:26 fslab2 kernel: [ 295.554695] Call Trace:
> Aug 19 18:31:26 fslab2 kernel: [ 295.557209] [<ffffffff8105c677>] ? console_unlock+0x227/0x290
> Aug 19 18:31:26 fslab2 kernel: [ 295.563111] [<ffffffff8105bb7f>] warn_slowpath_common+0x7f/0xc0
> Aug 19 18:31:26 fslab2 kernel: [ 295.569186] [<ffffffff8105bbda>] warn_slowpath_null+0x1a/0x20
> Aug 19 18:31:26 fslab2 kernel: [ 295.575096] [<ffffffffa013d0d0>] btrfs_alloc_free_block+0x200/0x360 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.582230] [<ffffffffa0165d10>] ? lock_delalloc_pages+0x1f0/0x1f0 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.589280] [<ffffffffa0127b6b>] __btrfs_cow_block+0x14b/0x6e0 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.595978] [<ffffffffa0179144>] ? btrfs_try_tree_write_lock+0x44/0x80 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.603394] [<ffffffffa0128217>] btrfs_cow_block+0x117/0x260 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.609920] [<ffffffffa012e455>] btrfs_search_slot+0x385/0xaa0 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.616621] [<ffffffffa0140f3f>] btrfs_lookup_inode+0x2f/0xa0 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.623236] [<ffffffffa0190eb3>] btrfs_update_delayed_inode+0x73/0x160 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.630644] [<ffffffff8137163e>] ? mutex_unlock+0xe/0x10
> Aug 19 18:31:26 fslab2 kernel: [ 295.636125] [<ffffffffa0192088>] btrfs_run_delayed_items+0xe8/0x120 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.643254] [<ffffffffa014a240>] btrfs_commit_transaction+0x230/0x870 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.650585] [<ffffffffa0149de9>] ? join_transaction+0x69/0x290 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.657274] [<ffffffff8107f410>] ? wake_up_bit+0x40/0x40
> Aug 19 18:31:26 fslab2 kernel: [ 295.662783] [<ffffffff81171700>] ? __sync_filesystem+0x90/0x90
> Aug 19 18:31:26 fslab2 kernel: [ 295.668783] [<ffffffffa0124ace>] btrfs_sync_fs+0x5e/0xd0 [btrfs]
> Aug 19 18:31:26 fslab2 kernel: [ 295.674951] [<ffffffff811716ce>] __sync_filesystem+0x5e/0x90
> Aug 19 18:31:26 fslab2 kernel: [ 295.680764] [<ffffffff8117171f>] sync_one_sb+0x1f/0x30
> Aug 19 18:31:26 fslab2 kernel: [ 295.686061] [<ffffffff8114751f>] iterate_supers+0x7f/0xe0
> Aug 19 18:31:26 fslab2 kernel: [ 295.691613] [<ffffffff81171775>] sys_sync+0x45/0x70
> Aug 19 18:31:26 fslab2 kernel: [ 295.696648] [<ffffffff8137b4c2>] system_call_fastpath+0x16/0x1b
> Aug 19 18:31:26 fslab2 kernel: [ 295.702726] ---[ end trace 5328a9730b4cdff4 ]---
> Aug 19 18:31:26 fslab2 kernel: [ 295.707533] ------------[ cut here ]------------
> Aug 19 18:31:26 fslab2 kernel: [ 295.712230] WARNING: at fs/btrfs/extent-tree.c:5711 btrfs_alloc_free_block+0x200/0x360 [btrfs]()
> Aug 19 18:31:26 fslab2 kernel: [ 295.721114] Hardware name: H8DCE
> Aug 19 18:31:26 fslab2 kernel: [ 295.724410] Modules linked in: nfsd ib_umad rdma_ucm rdma_cm iw_cm ib_addr ib_uverbs sg ib_ipoib ib_cm ib_sa ip
> v6 sd_mod crc_t10dif loop arcmsr md_mod ib_mthca ib_mad pcspkr ib_core 8250_pnp fuse af_packet nfs lockd fscache auth_rpcgss nfs_acl sunrpc btrfs
> lzo_decompress lzo_compress zlib_deflate crc32c libcrc32c crypto_hash crypto_algapi ata_generic pata_acpi e1000 pata_amd sata_nv libata scsi_mod
[...]
repeats at least a few thousand times and fills the logs...
--
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
