Got this one for some reason; this fs did not have any issues before:
[64343.060291] perf interrupt took too long (2544 > 2500), lowering
kernel.perf_event_max_sample_rate to 50000
[67344.630449] ------------[ cut here ]------------
[67344.630509] WARNING: CPU: 3 PID: 21885 at fs/btrfs/super.c:260
__btrfs_abort_transaction+0x4c/0x10e [btrfs]()
[67344.630626] BTRFS: Transaction aborted (error -22)
[67344.630627] Modules linked in: xt_nat xt_tcpudp ipt_MASQUERADE
nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4
nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables tun
cpufreq_conservative cpufreq_powersave cpufreq_stats ipv6 btrfs xor
raid6_pq zlib_deflate coretemp hwmon loop parport_pc parport 8250_fintek
tpm_infineon tpm_tis tpm pcspkr i2c_i801 i2c_core battery video ehci_pci
ehci_hcd lpc_ich mfd_core button acpi_cpufreq ext4 crc16 jbd2 mbcache
raid1 sg sd_mod ahci libahci r8169 mii libata scsi_mod
[67344.631027] CPU: 3 PID: 21885 Comm: btrfs Not tainted 3.19.3 #1
[67344.631074] Hardware name: System manufacturer System Product
Name/P8H77-M PRO, BIOS 1101 02/04/2013
[67344.631164] 0000000000000009 ffff8800ab38b928 ffffffff813bd016
ffff88081facd801
[67344.631253] ffff8800ab38b978 ffff8800ab38b968 ffffffff8103b025
0000000000000000
[67344.631342] ffffffffa029235e 00000000ffffffea ffff880042a59800
ffff8807f1e7dd10
[67344.631431] Call Trace:
[67344.631477] [<ffffffff813bd016>] dump_stack+0x45/0x57
[67344.631525] [<ffffffff8103b025>] warn_slowpath_common+0x97/0xb1
[67344.631575] [<ffffffffa029235e>] ?
__btrfs_abort_transaction+0x4c/0x10e [btrfs]
[67344.631663] [<ffffffff8103b0d3>] warn_slowpath_fmt+0x41/0x43
[67344.631713] [<ffffffffa029235e>]
__btrfs_abort_transaction+0x4c/0x10e [btrfs]
[67344.632914] [<ffffffffa02b658c>] create_pending_snapshot+0x6a3/0x6e4
[btrfs]
[67344.632967] [<ffffffffa029f93b>] ?
block_rsv_release_bytes.isra.54+0xb0/0xc1 [btrfs]
[67344.633060] [<ffffffffa02b6633>] create_pending_snapshots+0x66/0x89
[btrfs]
[67344.633114] [<ffffffffa02b78c4>]
btrfs_commit_transaction+0x44f/0x9bb [btrfs]
[67344.633208] [<ffffffffa02e03f4>] btrfs_mksubvol.isra.61+0x2eb/0x418
[btrfs]
[67344.633257] [<ffffffff81065b9d>] ? add_wait_queue+0x44/0x44
[67344.633310] [<ffffffffa02e0670>]
btrfs_ioctl_snap_create_transid+0x14f/0x180 [btrfs]
[67344.633404] [<ffffffffa02e07d4>]
btrfs_ioctl_snap_create_v2+0xc7/0x112 [btrfs]
[67344.633497] [<ffffffffa02e43a3>] btrfs_ioctl+0x6cc/0x22f5 [btrfs]
[67344.633545] [<ffffffff810d8bc5>] ? handle_mm_fault+0x452/0x9fc
[67344.633594] [<ffffffff8117870f>] ? avc_has_perm+0x2e/0xf7
[67344.633641] [<ffffffff811119cf>] do_vfs_ioctl+0x418/0x460
[67344.633688] [<ffffffff81111a65>] SyS_ioctl+0x4e/0x7d
[67344.633735] [<ffffffff81031c5b>] ? do_page_fault+0xc/0x11
[67344.633782] [<ffffffff813c19f2>] system_call_fastpath+0x12/0x17
[67344.633829] ---[ end trace ea2b25b59548e150 ]---
[67344.633875] BTRFS: error (device sdb5) in
create_pending_snapshot:1392: errno=-22 unknown
[67344.633964] BTRFS info (device sdb5): forced readonly
[67344.634010] BTRFS warning (device sdb5): Skipping commit of aborted
transaction.
[67344.634098] BTRFS: error (device sdb5) in cleanup_transaction:1670:
errno=-22 unknown
[67344.634186] BTRFS info (device sdb5): delayed_refs has NO entry
--
Tomasz Chmielewski
http://www.sslrack.com
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