can't write to a BTRFS disk with my powermac

[elvisplatini]

Hi,
When I try to write to my BTRFS formated external disk, I get an error message explaining the file system is mounted read only. Indeed, I can still read data in it.

A dmesg shows the following errors:

[ 143.354977] usb 1-2: new high-speed USB device number 4 using ehci-pci
[ 143.564941] usb 1-2: New USB device found, idVendor=04e8, idProduct=61b5
[ 143.564955] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 143.564963] usb 1-2: Product: Samsung M3 Portable
[ 143.564971] usb 1-2: Manufacturer: Samsung M3 Portable
[ 143.564978] usb 1-2: SerialNumber: D93E7DFA1900009A
[ 143.668941] usbcore: registered new interface driver usb-storage
[ 143.694409] scsi host5: uas
[ 143.694601] usbcore: registered new interface driver uas
[ 143.696560] scsi 5:0:0:0: Direct-Access Samsung M3 Portable 1402 PQ: 0 ANSI: 6
[ 143.698592] sd 5:0:0:0: Attached scsi generic sg3 type 0
[ 147.091177] sd 5:0:0:0: [sdc] 3907029168 512-byte logical blocks: (2.00 TB/1.82 TiB)
[ 147.091194] sd 5:0:0:0: [sdc] 4096-byte physical blocks
[ 147.092774] sd 5:0:0:0: [sdc] Write Protect is off
[ 147.092785] sd 5:0:0:0: [sdc] Mode Sense: 53 00 00 08
[ 147.093629] sd 5:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 147.109068] sdc: sdc1
[ 147.113161] sd 5:0:0:0: [sdc] Attached SCSI disk
[ 147.744379] BTRFS: device fsid bf584dbe-6bf6-4847-8b32-cb0d22bead69 devid 1 transid 17546 /dev/sdc1
[ 148.044853] BTRFS info (device sdc1): disk space caching is enabled
[ 148.044867] BTRFS: has skinny extents
[ 181.329491] BTRFS: Transaction aborted (error -17)
[ 181.329573] ------------[ cut here ]------------
[ 181.329577] WARNING: at /build/linux-t3xCGW/linux-4.4.0/fs/btrfs/extent-tree.c:2927
[ 181.329580] Modules linked in: uas usb_storage drbg ansi_cprng ctr ccm arc4 zd1211rw mac80211 cfg80211 input_leds mac_hid snd_aoa_codec_onyx snd_aoa snd_seq_midi snd_seq_midi_event rtc_generic snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore shpchp uio_pdrv_genirq uio parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq windfarm_cpufreq_clamp windfarm_smu_sensors windfarm_smu_controls windfarm_pm112 windfarm_pid sil164 hid_generic nouveau windfarm_lm75_sensor windfarm_max6690_sensor i2c_algo_bit firewire_ohci windfarm_smu_sat windfarm_core firewire_core ttm crc_itu_t drm_kms_helper usbhid ata_generic hid drm tg3 ptp uninorth_agp pps_core
[ 181.329658] CPU: 0 PID: 1490 Comm: btrfs-transacti Not tainted 4.4.0-24-powerpc64-smp #43-Ubuntu
[ 181.329663] task: c00000007a633db0 ti: c00000007d2c0000 task.ti: c00000007d2c0000
[ 181.329666] NIP: d000000001d99274 LR: d000000001d99270 CTR: 0000000000000000
[ 181.329670] REGS: c00000007d2c3690 TRAP: 0700 Not tainted (4.4.0-24-powerpc64-smp)
[ 181.329672] MSR: 9000000000029032 <SF,HV,EE,ME,IR,DR,RI> CR: 24f72442 XER: 20000000
[ 181.329683] SOFTE: 1
               GPR00: d000000001d99270 c00000007d2c3910 d000000001e8f2d0 0000000000000026
               GPR04: c00000025de09ad0 c00000025de0c360 0000000000000036 00000000000002ab
               GPR08: 0000000000000007 c0000000010150fc 000000025cdf6000 0000000000000018
               GPR12: 0000000048f72444 c00000000fdc0000 c0000000000f9f40 c00000007d082b80
               GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
               GPR20: c00000007de65800 0000000000000001 0000000000000000 c00000007b765090
               GPR24: c00000007b784170 c00000007b784160 0000000000000000 c00000007b784000
               GPR28: c00000007de65800 c00000007b765000 c00000024e12bc00 ffffffffffffffef
[ 181.329801] NIP [d000000001d99274] .btrfs_run_delayed_refs+0x364/0x3a0 [btrfs]
[ 181.329846] LR [d000000001d99270] .btrfs_run_delayed_refs+0x360/0x3a0 [btrfs]
[ 181.329848] Call Trace:
[ 181.329894] [c00000007d2c3910] [d000000001d99270] .btrfs_run_delayed_refs+0x360/0x3a0 [btrfs] (unreliable)
[ 181.329941] [c00000007d2c39e0] [d000000001d9a5e0] .btrfs_write_dirty_block_groups+0x1d0/0x300 [btrfs]
[ 181.329995] [c00000007d2c3ab0] [d000000001e4e3fc] .commit_cowonly_roots+0x284/0x36c [btrfs]
[ 181.330044] [c00000007d2c3b90] [d000000001db37f8] .btrfs_commit_transaction+0x708/0xc40 [btrfs]
[ 181.330093] [c00000007d2c3c70] [d000000001daf114] .transaction_kthread+0x2a4/0x340 [btrfs]
[ 181.330101] [c00000007d2c3d30] [c0000000000fa04c] .kthread+0x10c/0x130
[ 181.330108] [c00000007d2c3e30] [c000000000009534] .ret_from_kernel_thread+0x58/0xa4
[ 181.330111] Instruction dump:
[ 181.330114] 7d4048a8 7d474378 7ce049ad 40a2fff4 7c0004ac 7949f7e3 40a2001c 3d420000
[ 181.330124] 7fe4fb78 e86a8900 480be205 e8410028 <0fe00000> 3d220000 7fa3eb78 e8a98908
[ 181.330134] ---[ end trace f2ee5bb68a7c169e ]---
[ 181.330181] BTRFS: error (device sdc1) in btrfs_run_delayed_refs:2927: errno=-17 Object already exists
[ 181.330187] BTRFS info (device sdc1): forced readonly
[ 181.330875] BTRFS warning (device sdc1): Skipping commit of aborted transaction.
[ 181.330887] BTRFS: error (device sdc1) in cleanup_transaction:1746: errno=-17 Object already exists

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-24-powerpc64-smp 4.4.0-24.43
ProcVersionSignature: Ubuntu 4.4.0-24.43-powerpc64-smp 4.4.10
Uname: Linux 4.4.0-24-powerpc64-smp ppc64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: powerpc
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: N/A
CurrentDesktop: LXDE
Date: Tue Jun 14 22:58:25 2016
HibernationDevice: RESUME=UUID=d4dc68d8-9f2f-4ece-b5bf-891fd8ff92e2
ProcFB: 0 nouveaufb
ProcKernelCmdLine: root=/dev/sdb3 ro quiet splash
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-24-powerpc64-smp N/A
 linux-backports-modules-4.4.0-24-powerpc64-smp N/A
 linux-firmware 1.157
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.7-rc1 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.7-rc3-yakkety/

[elvisplatini (regis-etourmy)]

 I installed Lubuntu a month ago, and I first selected BTRFS for the root filesystem, as on my amd64 machines. It didn't work so I choose ext4 for the root file system.

 Last week, when I first tried tu use my BTRFS fomated external drive, the kernel was in version 4.4.0-22. I couldn't write to it, as I can't now with version 4.4.0.24.

ppc64 kernels are not available on http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.7-rc3-yakkety/. I will try to compile it from sources, and let you know if it works.

Thanks a lot for your help!

[elvisplatini (regis-etourmy)]

Hi,

I built the mainline kernel v4.7-rc3-yakkety today. The problem still exists running this kernel:

[ 53.638010] IPv6: ADDRCONF(NETDEV_CHANGE): wlx001cdfdd052f: link becomes ready
[ 284.799611] usb 1-2: new high-speed USB device number 4 using ehci-pci
[ 285.009477] usb 1-2: New USB device found, idVendor=04e8, idProduct=61b5
[ 285.009492] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 285.009501] usb 1-2: Product: Samsung M3 Portable
[ 285.009509] usb 1-2: Manufacturer: Samsung M3 Portable
[ 285.009518] usb 1-2: SerialNumber: D93E7DFA1900009A
[ 285.113800] usbcore: registered new interface driver usb-storage
[ 285.142745] scsi host5: uas
[ 285.142982] usbcore: registered new interface driver uas
[ 285.145458] scsi 5:0:0:0: Direct-Access Samsung M3 Portable 1402 PQ: 0 ANSI: 6
[ 285.176919] sd 5:0:0:0: Attached scsi generic sg3 type 0
[ 288.510792] sd 5:0:0:0: [sdc] 3907029168 512-byte logical blocks: (2.00 TB/1.82 TiB)
[ 288.510801] sd 5:0:0:0: [sdc] 4096-byte physical blocks
[ 288.512275] sd 5:0:0:0: [sdc] Write Protect is off
[ 288.512282] sd 5:0:0:0: [sdc] Mode Sense: 53 00 00 08
[ 288.513024] sd 5:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 288.528924] sdc: sdc1
[ 288.532525] sd 5:0:0:0: [sdc] Attached SCSI disk
[ 289.152668] BTRFS: device fsid bf584dbe-6bf6-4847-8b32-cb0d22bead69 devid 1 transid 17693 /dev/sdc1
[ 289.439843] BTRFS info (device sdc1): disk space caching is enabled
[ 289.439853] BTRFS info (device sdc1): has skinny extents
[ 322.787805] ------------[ cut here ]------------
[ 322.787900] WARNING: CPU: 1 PID: 1833 at fs/btrfs/inode.c:945 .cow_file_range+0x4a4/0x500 [btrfs]
[ 322.787904] Modules linked in: uas usb_storage drbg ansi_cprng ctr ccm arc4 zd1211rw mac80211 cfg80211 snd_aoa_fabric_layout input_leds mac_hid snd_aoa_codec_onyx snd_aoa snd_seq_midi rtc_generic snd_aoa_i2sbus snd_seq_midi_event snd_rawmidi snd_seq snd_aoa_soundbus snd_seq_device snd_pcm snd_timer rack_meter snd soundcore shpchp uio_pdrv_genirq uio parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq windfarm_cpufreq_clamp windfarm_smu_sensors windfarm_smu_controls windfarm_pm112 windfarm_pid hid_generic sil164 windfarm_max6690_sensor windfarm_lm75_sensor windfarm_smu_sat windfarm_core firewire_ohci nouveau firewire_core ata_generic crc_itu_t usbhid hid tg3 i2c_algo_bit ttm drm_kms_helper ptp drm pps_core uninorth_agp
[ 322.788006] CPU: 1 PID: 1833 Comm: btrfs-transacti Not tainted 4.7.0-rc3-custom #1
[ 322.788010] task: c00000007c354080 ti: c00000007ba3c000 task.ti: c00000007ba3c000
[ 322.788014] NIP: d000000001dc0594 LR: d000000001dc0aa4 CTR: d000000001dc0160
[ 322.788018] REGS: c00000007ba3ec70 TRAP: 0700 Not tainted (4.7.0-rc3-custom)
[ 322.788020] MSR: 900000000202b032 <SF,HV,VEC,EE,FP,ME,IR,DR,RI> CR: 24442282 XER: 20000000
[ 322.788038] SOFTE: 1
               GPR00: d000000001dc0aa4 c00000007ba3eef0 d000000001e983c0 c00000007d7c12b0
               GPR04: f000000008f8e000 0000000000000000 000000000003ffff c00000007ba3f318
               GPR08: d000000001e983c0 0000000000000001 d000000001e954da d000000001e60ea0
               ...

[elvisplatini (regis-etourmy)]

oops, I forgot the tag:

kernel-bug-exists-upstream

----- Mail original -----
De: "regis etourmy" <email address hidden>
À: "Bug 1592566" <email address hidden>
Envoyé: Samedi 18 Juin 2016 23:59:10
Objet: Re: [Bug 1592566] Re: can't write to a BTRFS disk with my powermac

Hi,

I built the mainline kernel v4.7-rc3-yakkety today. The problem still exists running this kernel:

[ 53.638010] IPv6: ADDRCONF(NETDEV_CHANGE): wlx001cdfdd052f: link becomes ready
[ 284.799611] usb 1-2: new high-speed USB device number 4 using ehci-pci
[ 285.009477] usb 1-2: New USB device found, idVendor=04e8, idProduct=61b5
[ 285.009492] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 285.009501] usb 1-2: Product: Samsung M3 Portable
[ 285.009509] usb 1-2: Manufacturer: Samsung M3 Portable
[ 285.009518] usb 1-2: SerialNumber: D93E7DFA1900009A
[ 285.113800] usbcore: registered new interface driver usb-storage
[ 285.142745] scsi host5: uas
[ 285.142982] usbcore: registered new interface driver uas
[ 285.145458] scsi 5:0:0:0: Direct-Access Samsung M3 Portable 1402 PQ: 0 ANSI: 6
[ 285.176919] sd 5:0:0:0: Attached scsi generic sg3 type 0
[ 288.510792] sd 5:0:0:0: [sdc] 3907029168 512-byte logical blocks: (2.00 TB/1.82 TiB)
[ 288.510801] sd 5:0:0:0: [sdc] 4096-byte physical blocks
[ 288.512275] sd 5:0:0:0: [sdc] Write Protect is off
[ 288.512282] sd 5:0:0:0: [sdc] Mode Sense: 53 00 00 08
[ 288.513024] sd 5:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 288.528924] sdc: sdc1
[ 288.532525] sd 5:0:0:0: [sdc] Attached SCSI disk
[ 289.152668] BTRFS: device fsid bf584dbe-6bf6-4847-8b32-cb0d22bead69 devid 1 transid 17693 /dev/sdc1
[ 289.439843] BTRFS info (device sdc1): disk space caching is enabled
[ 289.439853] BTRFS info (device sdc1): has skinny extents
[ 322.787805] ------------[ cut here ]------------
[ 322.787900] WARNING: CPU: 1 PID: 1833 at fs/btrfs/inode.c:945 .cow_file_range+0x4a4/0x500 [btrfs]
[ 322.787904] Modules linked in: uas usb_storage drbg ansi_cprng ctr ccm arc4 zd1211rw mac80211 cfg80211 snd_aoa_fabric_layout input_leds mac_hid snd_aoa_codec_onyx snd_aoa snd_seq_midi rtc_generic snd_aoa_i2sbus snd_seq_midi_event snd_rawmidi snd_seq snd_aoa_soundbus snd_seq_device snd_pcm snd_timer rack_meter snd soundcore shpchp uio_pdrv_genirq uio parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq windfarm_cpufreq_clamp windfarm_smu_sensors windfarm_smu_controls windfarm_pm112 windfarm_pid hid_generic sil164 windfarm_max6690_sensor windfarm_lm75_sensor windfarm_smu_sat windfarm_core firewire_ohci nouveau firewire_core ata_generic crc_itu_t usbhid hid tg3 i2c_algo_bit ttm drm_kms_helper ptp drm pps_core uninorth_agp
[ 322.788006] CPU: 1 PID: 1833 Comm: btrfs-transacti Not tainted 4.7.0-rc3-custom #1
[ 322.788010] task: c00000007c354080 ti: c00000007ba3c000 task.ti: c00000007ba3c000
[ 322.788014] NIP: d000000001dc0594 LR: d000000001dc0aa4 CTR: d000000001dc0160
[ 322.788018] REGS: c00000007ba3ec70 TRAP: 0700 Not tainted (4.7.0-rc3-custom)
[ 322.788020] MSR: 900000000202b032 <SF,HV,VEC,EE,FP,ME,IR,DR,RI> CR: 24442282 XER: 20000000
[ 322.788038] SOFTE: 1
      ...

[elvisplatini (regis-etourmy)]

should I had cotes around the tag?

'kernel-bug-exists-upstream'

[elvisplatini (regis-etourmy)]

and replace had by add ;-) ?

[elvisplatini (regis-etourmy)]

and cotes by quotes, and go to sleep...

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]