On Tue, Mar 15, 2016 at 2:42 PM, Marc Haber <mh+linux-bt...@zugschlus.de> wrote:
> On Tue, Mar 15, 2016 at 02:29:32PM +0100, Marc Haber wrote:
>> After umounting and btrfs check the block device, things seem to be
>> fine now
>
> But, umounting the btrfs seemed to trigger the following kernel traces:
>
> Mar 15 14:21:30 fan kernel: [92308.377104] ------------[ cut here
> ]------------
> Mar 15 14:21:30 fan kernel: [92308.377135] WARNING: CPU: 5 PID: 28243 at
> fs/btrfs/extent-tree.c:5380 bt
> rfs_free_block_groups+0x1bc/0x36f [btrfs]()
> Mar 15 14:21:30 fan kernel: [92308.377137] Modules linked in: vhost_net vhost
> macvtap macvlan tun iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> nf_nat nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp dummy ebtable_filter
> ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables
> cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative bridge
> stp llc snd_cmipci snd_hda_codec_realtek snd_hda_codec_generic
> snd_hda_codec_hdmi kvm_amd snd_mpu401_uart snd_opl3_lib snd_rawmidi kvm
> snd_hda_intel snd_seq_device snd_hda_codec snd_hda_core snd_hwdep
> amd64_edac_mod snd_pcm_oss edac_mce_amd irqbypass input_leds snd_mixer_oss
> pcspkr k10temp edac_core snd_pcm snd_timer snd i2c_piix4 asus_atk0110
> soundcore acpi_cpufreq tpm_tis tpm sg processor evdev shpchp 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 amdkfd radeon i2c_algo_bit ahci ttm sym53c8xx libahci
> xhci_pci scsi_transport_spi drm_kms_helper ohci_hcd ehci_pci xhci_hcd libata
> ehci_hcd drm usbcore scsi_mod usb_common i2c_core button
> Mar 15 14:21:30 fan kernel: [92308.377203] CPU: 5 PID: 28243 Comm: umount Not
> tainted 4.4.5-zgws1 #2
> Mar 15 14:21:30 fan kernel: [92308.377205] Hardware name: System manufacturer
> System Product Name/M5A88-V EVO, BIOS 1603 10/12/2012
> Mar 15 14:21:30 fan kernel: [92308.377207] 000000000000005b ffffffff811dd418
> 0000000000000000 0000000000000009
> Mar 15 14:21:30 fan kernel: [92308.377210] ffffffff81051e21 ffffffffa047a147
> ffff880600a28000 0000000000000000
> Mar 15 14:21:30 fan kernel: [92308.377212] ffff880600a28080 ffff8805af7eea00
> ffffffffa047a147 ffff880600a28000
> Mar 15 14:21:30 fan kernel: [92308.377215] Call Trace:
> Mar 15 14:21:30 fan kernel: [92308.377221] [<ffffffff811dd418>] ?
> dump_stack+0x5a/0x6f
> Mar 15 14:21:30 fan kernel: [92308.377224] [<ffffffff81051e21>] ?
> warn_slowpath_common+0x8e/0xa3
> Mar 15 14:21:30 fan kernel: [92308.377239] [<ffffffffa047a147>] ?
> btrfs_free_block_groups+0x1bc/0x36f[btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377252] [<ffffffffa047a147>] ?
> btrfs_free_block_groups+0x1bc/0x36f[btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377267] [<ffffffffa0487c72>] ?
> close_ctree+0x1e6/0x2f2 [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377271] [<ffffffff8113dfd9>] ?
> generic_shutdown_super+0x64/0xdf
> Mar 15 14:21:30 fan kernel: [92308.377273] [<ffffffff8113e181>] ?
> kill_anon_super+0x9/0xe
> Mar 15 14:21:30 fan kernel: [92308.377285] [<ffffffffa04660db>] ?
> btrfs_kill_super+0xd/0x16 [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377288] [<ffffffff8113e286>] ?
> deactivate_locked_super+0x2f/0x56
> Mar 15 14:21:30 fan kernel: [92308.377291] [<ffffffff81152aff>] ?
> cleanup_mnt+0x4f/0x6b
> Mar 15 14:21:30 fan kernel: [92308.377293] [<ffffffff81066ab7>] ?
> task_work_run+0x5d/0x71
> Mar 15 14:21:30 fan kernel: [92308.377296] [<ffffffff810036dc>] ?
> prepare_exit_to_usermode+0x70/0x99
> Mar 15 14:21:30 fan kernel: [92308.377300] [<ffffffff8140de08>] ?
> int_ret_from_sys_call+0x25/0x8f
> Mar 15 14:21:30 fan kernel: [92308.377302] ---[ end trace 18c6bb90b0c6c689
> ]---
>
> Mar 15 14:21:30 fan kernel: [92308.377303] ------------[ cut here
> ]------------
> Mar 15 14:21:30 fan kernel: [92308.377318] WARNING: CPU: 5 PID: 28243 at
> fs/btrfs/extent-tree.c:5381 btrfs_free_block_groups+0x1d7/0x36f [btrfs]()
> Mar 15 14:21:30 fan kernel: [92308.377319] Modules linked in: vhost_net vhost
> macvtap macvlan tun iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> nf_nat nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp dummy ebtable_filter
> ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables
> cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative bridge
> stp llc snd_cmipci snd_hda_codec_realtek snd_hda_codec_generic
> snd_hda_codec_hdmi kvm_amd snd_mpu401_uart snd_opl3_lib snd_rawmidi kvm
> snd_hda_intel snd_seq_device snd_hda_codec snd_hda_core snd_hwdep
> amd64_edac_mod snd_pcm_oss edac_mce_amd irqbypass input_leds snd_mixer_oss
> pcspkr k10temp edac_core snd_pcm snd_timer snd i2c_piix4 asus_atk0110
> soundcore acpi_cpufreq tpm_tis tpm sg processor evdev shpchp 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 amdkfd radeon i2c_algo_bit ahci ttm sym53c8xx libahci
> xhci_pci scsi_transport_spi drm_kms_helper ohci_hcd ehci_pci xhci_hcd libata
> ehci_hcd drm usbcore scsi_mod usb_common i2c_core button
> Mar 15 14:21:30 fan kernel: [92308.377362] CPU: 5 PID: 28243 Comm: umount
> Tainted: G W 4.4.5-zgws1 #2
> Mar 15 14:21:30 fan kernel: [92308.377364] Hardware name: System manufacturer
> System Product Name/M5A88-V EVO, BIOS 1603 10/12/2012
> Mar 15 14:21:30 fan kernel: [92308.377365] 000000000000005b ffffffff811dd418
> 0000000000000000 0000000000000009
> Mar 15 14:21:30 fan kernel: [92308.377367] ffffffff81051e21 ffffffffa047a162
> ffff880600a28000 0000000000000000
> Mar 15 14:21:30 fan kernel: [92308.377369] ffff880600a28080 ffff8805af7eea00
> ffffffffa047a162 ffff880600a28000
> Mar 15 14:21:30 fan kernel: [92308.377372] Call Trace:
> Mar 15 14:21:30 fan kernel: [92308.377374] [<ffffffff811dd418>] ?
> dump_stack+0x5a/0x6f
> Mar 15 14:21:30 fan kernel: [92308.377377] [<ffffffff81051e21>] ?
> warn_slowpath_common+0x8e/0xa3
> Mar 15 14:21:30 fan kernel: [92308.377390] [<ffffffffa047a162>] ?
> btrfs_free_block_groups+0x1d7/0x36f [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377404] [<ffffffffa047a162>] ?
> btrfs_free_block_groups+0x1d7/0x36f [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377419] [<ffffffffa0487c72>] ?
> close_ctree+0x1e6/0x2f2 [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377421] [<ffffffff8113dfd9>] ?
> generic_shutdown_super+0x64/0xdf
> Mar 15 14:21:30 fan kernel: [92308.377423] [<ffffffff8113e181>] ?
> kill_anon_super+0x9/0xe
> Mar 15 14:21:30 fan kernel: [92308.377435] [<ffffffffa04660db>] ?
> btrfs_kill_super+0xd/0x16 [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377438] [<ffffffff8113e286>] ?
> deactivate_locked_super+0x2f/0x56
> Mar 15 14:21:30 fan kernel: [92308.377440] [<ffffffff81152aff>] ?
> cleanup_mnt+0x4f/0x6b
> Mar 15 14:21:30 fan kernel: [92308.377442] [<ffffffff81066ab7>] ?
> task_work_run+0x5d/0x71
> Mar 15 14:21:30 fan kernel: [92308.377444] [<ffffffff810036dc>] ?
> prepare_exit_to_usermode+0x70/0x99
> Mar 15 14:21:30 fan kernel: [92308.377446] [<ffffffff8140de08>] ?
> int_ret_from_sys_call+0x25/0x8f
> Mar 15 14:21:30 fan kernel: [92308.377448] ---[ end trace 18c6bb90b0c6c68a
> ]---
OK, this corresponds with the symptoms from the balances.
You hit the first to warnings in here:
static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
{
block_rsv_release_bytes(fs_info, &fs_info->global_block_rsv, NULL,
(u64)-1);
WARN_ON(fs_info->delalloc_block_rsv.size > 0);
WARN_ON(fs_info->delalloc_block_rsv.reserved > 0);
WARN_ON(fs_info->trans_block_rsv.size > 0);
WARN_ON(fs_info->trans_block_rsv.reserved > 0);
WARN_ON(fs_info->chunk_block_rsv.size > 0);
WARN_ON(fs_info->chunk_block_rsv.reserved > 0);
WARN_ON(fs_info->delayed_block_rsv.size > 0);
WARN_ON(fs_info->delayed_block_rsv.reserved > 0);
}
and would need to traceback the code further to figure out why this
function is failing. That is one track.
Another track maybe, assuming something outside btrfs is causing the
trouble, would be to copy the fs device (so on top of dm) with dd to
some large secure local storage (maybe on another PC) so that you can
mount it there via a loopdev. (Make at least sure a kernel has no
possibility to work on the same UUID ).
Then you can run the balance commands etc in more isolated
environment, at least not affected by possible
dm/root-crypt/bootloader etc issues. Hopefully that gives hints to the
root cause.
> Mar 15 14:21:30 fan kernel: [92308.377455] ------------[ cut here
> ]------------
> Mar 15 14:21:30 fan kernel: [92308.377469] WARNING: CPU: 5 PID: 28243 at
> fs/btrfs/extent-tree.c:9595 btrfs_free_block_groups+0x34f/0x36f [btrfs]()
> Mar 15 14:21:30 fan kernel: [92308.377471] Modules linked in: vhost_net vhost
> macvtap macvlan tun iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> nf_nat nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp dummy ebtable_filter
> ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables
> cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative bridge
> stp llc snd_cmipci snd_hda_codec_realtek snd_hda_codec_generic
> snd_hda_codec_hdmi kvm_amd snd_mpu401_uart snd_opl3_lib snd_rawmidi kvm
> snd_hda_intel snd_seq_device snd_hda_codec snd_hda_core snd_hwdep
> amd64_edac_mod snd_pcm_oss edac_mce_amd irqbypass input_leds snd_mixer_oss
> pcspkr k10temp edac_core snd_pcm snd_timer snd i2c_piix4 asus_atk0110
> soundcore acpi_cpufreq tpm_tis tpm sg processor evdev shpchp 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 amdkfd radeon i2c_algo_bit ahci ttm sym53c8xx libahci
> xhci_pci scsi_transport_spi drm_kms_helper ohci_hcd ehci_pci xhci_hcd libata
> ehci_hcd drm usbcore scsi_mod usb_common i2c_core button
> Mar 15 14:21:30 fan kernel: [92308.377514] CPU: 5 PID: 28243 Comm: umount
> Tainted: G W 4.4.5-zgws1 #2
> Mar 15 14:21:30 fan kernel: [92308.377515] Hardware name: System manufacturer
> System Product Name/M5A88-V EVO, BIOS 1603 10/12/2012
> Mar 15 14:21:30 fan kernel: [92308.377517] 000000000000005b ffffffff811dd418
> 0000000000000000 0000000000000009
> Mar 15 14:21:30 fan kernel: [92308.377519] ffffffff81051e21 ffffffffa047a2da
> ffff880600a28000 ffff8806173f6e88
> Mar 15 14:21:30 fan kernel: [92308.377521] 0000000000000038 0000000000000000
> ffffffffa047a2da ffff880600a28000
> Mar 15 14:21:30 fan kernel: [92308.377523] Call Trace:
> Mar 15 14:21:30 fan kernel: [92308.377525] [<ffffffff811dd418>] ?
> dump_stack+0x5a/0x6f
> Mar 15 14:21:30 fan kernel: [92308.377528] [<ffffffff81051e21>] ?
> warn_slowpath_common+0x8e/0xa3
> Mar 15 14:21:30 fan kernel: [92308.377542] [<ffffffffa047a2da>] ?
> btrfs_free_block_groups+0x34f/0x36f [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377555] [<ffffffffa047a2da>] ?
> btrfs_free_block_groups+0x34f/0x36f [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377570] [<ffffffffa0487c72>] ?
> close_ctree+0x1e6/0x2f2 [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377573] [<ffffffff8113dfd9>] ?
> generic_shutdown_super+0x64/0xdf
> Mar 15 14:21:30 fan kernel: [92308.377574] [<ffffffff8113e181>] ?
> kill_anon_super+0x9/0xe
> Mar 15 14:21:30 fan kernel: [92308.377587] [<ffffffffa04660db>] ?
> btrfs_kill_super+0xd/0x16 [btrfs]
> Mar 15 14:21:30 fan kernel: [92308.377589] [<ffffffff8113e286>] ?
> deactivate_locked_super+0x2f/0x56
> Mar 15 14:21:30 fan kernel: [92308.377591] [<ffffffff81152aff>] ?
> cleanup_mnt+0x4f/0x6b
> Mar 15 14:21:30 fan kernel: [92308.377593] [<ffffffff81066ab7>] ?
> task_work_run+0x5d/0x71
> Mar 15 14:21:30 fan kernel: [92308.377596] [<ffffffff810036dc>] ?
> prepare_exit_to_usermode+0x70/0x99
> Mar 15 14:21:30 fan kernel: [92308.377598] [<ffffffff8140de08>] ?
> int_ret_from_sys_call+0x25/0x8f
> Mar 15 14:21:30 fan kernel: [92308.377600] ---[ end trace 18c6bb90b0c6c68b
> ]---
> Mar 15 14:21:30 fan kernel: [92308.377601] BTRFS: space_info 4 has
> 20608794624 free, is not full
> Mar 15 14:21:30 fan kernel: [92308.377604] BTRFS: space_info
> total=23085449216, used=2476654592, pinned=0, reserved=0,
> may_use=25769803776, readonly=0
>
> 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
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