Bug 198945 - BTRFS partition re-mounted as read-only after few minutes of use
Summary: BTRFS partition re-mounted as read-only after few minutes of use
Status: NEW
Alias: None
Product: File System
Classification: Unclassified
Component: btrfs (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Josef Bacik
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-02-28 16:40 UTC by Peter Y. Chuang
Modified: 2018-03-19 16:13 UTC (History)
1 user (show)

See Also:
Kernel Version: 4.15.y
Tree: Mainline
Regression: No

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Description Peter Y. Chuang 2018-02-28 16:40:36 UTC 
On my laptop, which has just been switched to BTRFS, the root partition (a BTRFS partition inside an encrypted LVM. The drive is an NVMe) is re-mounted as read-only few minutes after boot. 

Trace:

[  199.974591] ------------[ cut here ]------------
[  199.974593] BTRFS: Transaction aborted (error -95)
[  199.974647] WARNING: CPU: 0 PID: 324 at fs/btrfs/inode.c:3042 btrfs_finish_ordered_io+0x7ab/0x850 [btrfs]
[  199.974648] Modules linked in: tun fuse cmac rfcomm bnep snd_hda_codec_hdmi ip6t_REJECT snd_hda_codec_generic nf_reject_ipv6 nf_log_ipv6 xt_hl nf_conntrack_ipv6 nf_defrag_ipv6 ip6t_rt ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp nls_iso8859_1 nls_cp437 vfat fat nf_conntrack_ipv4 nf_defrag_ipv4 xt_addrtype xt_conntrack snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_dsp snd_soc_sst_ipc snd_soc_acpi brcmfmac snd_soc_core ip6table_filter ip6_tables brcmutil nf_conntrack_netbios_ns snd_compress nf_conntrack_broadcast nf_nat_ftp ac97_bus cfg80211 snd_pcm_dmaengine nf_nat nf_conntrack_ftp nf_conntrack libcrc32c crc32c_generic thunderbolt iptable_filter iTCO_wdt mmc_core iTCO_vendor_support crypto_user msr intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp
[  199.974675]  kvm_intel snd_hda_intel snd_hda_codec kvm snd_hda_core applesmc snd_hwdep input_polldev irqbypass snd_pcm intel_cstate snd_timer intel_uncore intel_rapl_perf pcspkr i915 snd i2c_i801 soundcore joydev mousedev input_leds i2c_algo_bit drm_kms_helper hci_uart btbcm btqca btintel drm bluetooth mei_me 8250_dw intel_gtt mei agpgart acpi_als shpchp syscopyarea idma64 sysfillrect sbs sysimgblt fb_sys_fops ecdh_generic rfkill kfifo_buf sbshc industrialio rtc_cmos evdev mac_hid ac apple_bl facetimehd(O) videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media ip_tables x_tables btrfs xor zstd_decompress zstd_compress xxhash raid6_pq dm_crypt algif_skcipher af_alg dm_mod crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd
[  199.974710]  glue_helper cryptd xhci_pci xhci_hcd usbcore usb_common applespi(O) crc16 led_class intel_lpss_pci intel_lpss spi_pxa2xx_platform
[  199.974718] CPU: 0 PID: 324 Comm: kworker/u8:6 Tainted: G     U     O     4.15.5-1-ARCH #1
[  199.974718] Hardware name: Apple Inc. MacBookPro14,1/Mac-B4831CEBD52A0C4C, BIOS MBP141.88Z.0169.B00.1712141501 12/14/2017
[  199.974734] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[  199.974746] RIP: 0010:btrfs_finish_ordered_io+0x7ab/0x850 [btrfs]
[  199.974747] RSP: 0018:ffffb3310128bdc8 EFLAGS: 00010286
[  199.974749] RAX: 0000000000000000 RBX: ffffa25b1e150b60 RCX: 0000000000000001
[  199.974749] RDX: 0000000080000001 RSI: ffffffff9fe47fd0 RDI: 00000000ffffffff
[  199.974750] RBP: ffffa25a2df7dad0 R08: 0000000000000001 R09: 0000000000000412
[  199.974751] R10: 0000000000000000 R11: 0000000000000000 R12: ffffa25a2df7d8e0
[  199.974752] R13: ffffa25a2df7d8c0 R14: ffffa25b1f037f78 R15: 0000000000000001
[  199.974753] FS:  0000000000000000(0000) GS:ffffa25b2ec00000(0000) knlGS:0000000000000000
[  199.974754] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  199.974755] CR2: 00007fd9cc5dd3e7 CR3: 000000006300a002 CR4: 00000000003606f0
[  199.974756] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  199.974756] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  199.974757] Call Trace:
[  199.974774]  normal_work_helper+0x39/0x370 [btrfs]
[  199.974779]  process_one_work+0x1ce/0x410
[  199.974782]  worker_thread+0x2b/0x3d0
[  199.974784]  ? process_one_work+0x410/0x410
[  199.974785]  kthread+0x113/0x130
[  199.974787]  ? kthread_create_on_node+0x70/0x70
[  199.974789]  ? do_syscall_64+0x74/0x190
[  199.974791]  ? SyS_exit_group+0x10/0x10
[  199.974793]  ret_from_fork+0x35/0x40
[  199.974795] Code: 08 01 e9 a4 fb ff ff 49 8b 46 60 f0 0f ba a8 50 12 00 00 02 72 17 8b 74 24 10 83 fe fb 74 32 48 c7 c7 38 a7 6c c0 e8 85 7a a3 de <0f> 0b 8b 4c 24 10 ba e2 0b 00 00 eb b1 4c 8b 23 4c 8b 53 10 41 
[  199.974820] ---[ end trace c8ed62ff6a525901 ]---
[  199.974822] BTRFS: error (device dm-2) in btrfs_finish_ordered_io:3042: errno=-95 unknown
[  199.974824] BTRFS info (device dm-2): forced readonly
[  199.976696] BTRFS error (device dm-2): pending csums is 6447104
Comment 1 David Sterba 2018-03-19 16:13:36 UTC 
This is going to be fixed in btrfs-convert that creates invalid inline files.
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