On Mon, Mar 28, 2016 at 09:51:43PM +0300, Nazar Mokrynskyi wrote: > However, despite those messages everything seems to work fine.
In my case, trying to balance the filesystem results in a the balance not finishing in hours, I/O performance going way down during the balance, and a plethora of kernel traces showing up in the syslog: Mar 22 22:37:08 fan kernel: [ 429.488415] ------------[ cut here ]------------ Mar 22 22:37:08 fan kernel: [ 429.488455] WARNING: CPU: 5 PID: 3899 at fs/btrfs/extent-tree.c:7897 btrfs_alloc_tree_block+0xeb/0x3d6 [btrfs]() Mar 22 22:37:08 fan kernel: [ 429.488456] BTRFS: block rsv returned -28 Mar 22 22:37:08 fan kernel: [ 429.488458] Modules linked in: dummy ebtable_filter ebtables ip6table_filter ip6_tables cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative kvm_amd kvm irqbypass snd_hda_codec_realtek snd_hda_codec_generic amd64_edac_mod input_leds edac_mce_amd pcspkr snd_hda_codec_hdmi snd_cmipci k10temp edac_core snd_mpu401_uart snd_opl3_lib snd_rawmidi snd_hda_intel snd_seq_device snd_hda_codec i2c_piix4 snd_hda_core acpi_cpufreq asus_atk0110 snd_hwdep tpm_tis evdev sg snd_pcm_oss tpm snd_mixer_oss snd_pcm snd_timer snd soundcore shpchp processor iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc hwmon_vid autofs4 crc32c_generic btrfs xor raid6_pq ext4 crc16 mbcache jbd2 hmac sha256_ssse3 sha256_generic drbg ansi_cprng xts gf128mul algif_skcipher af_alg dm_crypt dm_mod hid_generic usbhid hid usb_storage sr_mod sd_mod cdrom ohci_pci r8169 mii xhci_pci amdkfd xhci_hcd ohci_hcd ehci_pci ehci_hcd radeon ahci i2c_algo_bit libahci ttm libata drm_kms_helper sym53c8xx scsi_transport_spi drm usbcore scsi_mod usb_common i2c_core button Mar 22 22:37:08 fan kernel: [ 429.488507] CPU: 5 PID: 3899 Comm: btrfs Tainted: G W 4.4.5-zgws1 #2 Mar 22 22:37:08 fan kernel: [ 429.488508] Hardware name: System manufacturer System Product Name/M5A88-V EVO, BIOS 1603 10/12/2012 Mar 22 22:37:08 fan kernel: [ 429.488510] 000000000000005b ffffffff811dd418 ffff8805f57fb890 0000000000000009 Mar 22 22:37:08 fan kernel: [ 429.488512] ffffffff81051e21 ffffffffa04cb29f ffff8805bbf46f00 ffff8805f57fb8e8 Mar 22 22:37:08 fan kernel: [ 429.488514] ffff8800b2390000 ffff88053c63d020 ffffffff81051e79 ffffffffa053e65b Mar 22 22:37:08 fan kernel: [ 429.488516] Call Trace: Mar 22 22:37:08 fan kernel: [ 429.488523] [<ffffffff811dd418>] ? dump_stack+0x5a/0x6f Mar 22 22:37:08 fan kernel: [ 429.488526] [<ffffffff81051e21>] ? warn_slowpath_common+0x8e/0xa3 Mar 22 22:37:08 fan kernel: [ 429.488537] [<ffffffffa04cb29f>] ? btrfs_alloc_tree_block+0xeb/0x3d6 [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488539] [<ffffffff81051e79>] ? warn_slowpath_fmt+0x43/0x4b Mar 22 22:37:08 fan kernel: [ 429.488551] [<ffffffffa04f50e7>] ? set_extent_buffer_dirty+0x76/0x82 [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488562] [<ffffffffa04cb29f>] ? btrfs_alloc_tree_block+0xeb/0x3d6 [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488572] [<ffffffffa04ba93c>] ? generic_bin_search.constprop.37+0xf0/0x128 [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488581] [<ffffffffa04b967a>] ? __btrfs_cow_block+0xdf/0x443 [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488591] [<ffffffffa04b9b0a>] ? btrfs_cow_block+0xd9/0x143 [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488602] [<ffffffffa0517654>] ? do_relocation+0x255/0x3ad [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488612] [<ffffffffa04bf02b>] ? block_rsv_add_bytes+0x43/0x4a [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488622] [<ffffffffa04ca230>] ? btrfs_block_rsv_refill+0x6e/0x7f [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488634] [<ffffffffa05187c7>] ? relocate_tree_blocks+0x2ee/0x42c [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488645] [<ffffffffa0519e4d>] ? relocate_block_group+0x27a/0x4ab [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488656] [<ffffffffa051a1b0>] ? btrfs_relocate_block_group+0x132/0x25a [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488668] [<ffffffffa04f9180>] ? btrfs_relocate_chunk.isra.35+0x3c/0xad [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488680] [<ffffffffa04fa96c>] ? btrfs_balance+0xd23/0xd8f [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488691] [<ffffffffa05037a6>] ? btrfs_ioctl_balance+0x233/0x2ae [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488703] [<ffffffffa0506152>] ? btrfs_ioctl+0x1234/0x2699 [btrfs] Mar 22 22:37:08 fan kernel: [ 429.488706] [<ffffffff811329bc>] ? mem_cgroup_charge_statistics.isra.30+0x22/0x4f Mar 22 22:37:08 fan kernel: [ 429.488708] [<ffffffff811363ea>] ? mem_cgroup_commit_charge+0x8a/0xaa Mar 22 22:37:08 fan kernel: [ 429.488711] [<ffffffff810f56bb>] ? __lru_cache_add+0x19/0x38 Mar 22 22:37:08 fan kernel: [ 429.488713] [<ffffffff8110a1fb>] ? set_pte_at+0x5/0x8 Mar 22 22:37:08 fan kernel: [ 429.488715] [<ffffffff8110daf2>] ? handle_mm_fault+0x488/0xea5 Mar 22 22:37:08 fan kernel: [ 429.488717] [<ffffffff81149d98>] ? do_vfs_ioctl+0x3ad/0x424 Mar 22 22:37:08 fan kernel: [ 429.488719] [<ffffffff81149d98>] ? do_vfs_ioctl+0x3ad/0x424 Mar 22 22:37:08 fan kernel: [ 429.488721] [<ffffffff81149e5c>] ? SyS_ioctl+0x4d/0x6f Mar 22 22:37:08 fan kernel: [ 429.488724] [<ffffffff8140dcae>] ? entry_SYSCALL_64_fastpath+0x12/0x6d Mar 22 22:37:08 fan kernel: [ 429.488725] ---[ end trace 63ee8891bd9de879 ]--- Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402 Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421 -- 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
