* Deleting a subvolume causes RO remount
@ 2013-09-22 22:30 Rain Maker
2013-09-23 1:54 ` Frank Holton
0 siblings, 1 reply; 2+ messages in thread
From: Rain Maker @ 2013-09-22 22:30 UTC (permalink / raw)
To: linux-btrfs
Hello list,
I'm still busy trying to figure out how to get VMs running without
corruption (see
http://www.spinics.net/lists/linux-btrfs/msg27300.html) and in the
process of this, I tried to remove the "@vmware" subvolume I've made.
This seems to trigger some bug, as dmesg is showing an OOPS (2 I
believe). The filesystem is then remounted read-only.
I am running kernel 3.12-rc1, but I can also confirm this o 3.11.0.
The storage setup is:
- 2 physical disks (sda = HDD, sdb = SSD)
- SSD is configured as bcache "caching device" for HDD (the "backing device")
- /dev/bcache0 is a LVM PV, with one VG, and one LV (unfortunately,
this was necessary for the Debian / Ubuntu setup to recognize the
device as a non-partitionable device) formatted as BTRFS.
- The BTRFS filesystem has several subvolumes (some done by the Ubuntu
installer)
- None of the subvolumes have any snapshots configured whatsoever
Command I use to remove (maybe this is wrong?):
# mount /dev/vgSystem/lvBTRFS /mnt
# cd /mnt
# ls
@ @home @kvm @virtualbox @vmware
# btrfs sub delete @vmware
Here is the error from dmesg:
[ 56.910180] ------------[ cut here ]------------
[ 56.910197] WARNING: CPU: 3 PID: 1979 at fs/btrfs/uuid-tree.c:171
btrfs_uuid_tree_rem+0x1ec/0x210()
[ 56.910201] Modules linked in: rfcomm(F) bnep(F)
serpent_avx_x86_64(F) serpent_sse2_x86_64(F) serpent_generic(F) lrw(F)
glue_helper(F) ablk_helper(F) cryptd(F) xts(F) gf128mul(F)
binfmt_misc(F) dm_crypt(F) arc4(F) ip6t_REJECT(F) xt_hl(F) ip6t_rt(F)
nf_conntrack_ipv6(F) nf_defrag_ipv6(F) ipt_REJECT(F) xt_LOG(F)
xt_limit(F) xt_tcpudp(F) xt_addrtype(F) iwldvm(F) nf_conntrack_ipv4(F)
btusb(F) nf_defrag_ipv4(F) mac80211(F) joydev(F) xt_state(F)
snd_hda_codec_hdmi(F) bluetooth(F) snd_hda_codec_idt(F)
snd_hda_intel(F) snd_hda_codec(F) psmouse(F) iwlwifi(F) snd_hwdep(F)
ip6table_filter(F) ip6_tables(F) snd_pcm(F) nf_conntrack_netbios_ns(F)
nf_conntrack_broadcast(F) nf_nat_ftp(F) nf_nat(F) nf_conntrack_ftp(F)
nf_conntrack(F) snd_page_alloc(F) iptable_filter(F) ip_tables(F)
snd_seq_midi(F) snd_seq_midi_event(F) dell_wmi(F) sparse_keymap(F)
x_tables(F) snd_rawmidi(F) dell_laptop(F) dcdbas(F) snd_seq(F)
cfg80211(F) serio_raw(F) lpc_ich(F) mfd_core(F) snd_seq_device(F)
snd_timer(F) snd(F) soundcore(F) hid_logitech_dj(F) usbhid(F) hid(F)
firewire_ohci(F) nouveau(F) ahci(F) libahci(F) mxm_wmi(F) e1000e(F)
wmi(F) ttm(F) firewire_core(F) sdhci_pci(F) crc_itu_t(F) sdhci(F)
ptp(F) pps_core(F) i915(F) video(F) i2c_algo_bit(F) drm_kms_helper(F)
drm(F) i2c_core(F)
[ 56.910315] CPU: 3 PID: 1979 Comm: btrfs Tainted: GF
3.12.0-rc1-bcache-00060-g31b8586 #1
[ 56.910318] Hardware name: Dell Inc. Latitude E6520/0J4TFW, BIOS
A17 03/07/2013
[ 56.910322] 0000000000000009 ffff88022f7f5c28 ffffffff816b1dc3
0000000000000000
[ 56.910328] ffff88022f7f5c60 ffffffff810480bc ffff88023031ff00
ffff88022ec30f00
[ 56.910334] 0000000000000000 ffff880231c54000 0000000000000000
ffff88022f7f5c70
[ 56.910340] Call Trace:
[ 56.910351] [<ffffffff816b1dc3>] dump_stack+0x4e/0x82
[ 56.910359] [<ffffffff810480bc>] warn_slowpath_common+0x8c/0xc0
[ 56.910366] [<ffffffff8104810a>] warn_slowpath_null+0x1a/0x20
[ 56.910371] [<ffffffff8131e3bc>] btrfs_uuid_tree_rem+0x1ec/0x210
[ 56.910377] [<ffffffff8128cde6>] ? btrfs_free_path+0x26/0x30
[ 56.910384] [<ffffffff812e9a6a>] ? btrfs_insert_orphan_item+0x6a/0x90
[ 56.910389] [<ffffffff812e5393>] btrfs_ioctl_snap_destroy+0x573/0x670
[ 56.910395] [<ffffffff812e7b08>] btrfs_ioctl+0x1018/0x25c0
[ 56.910403] [<ffffffff8115185c>] ? handle_mm_fault+0x42c/0x1030
[ 56.910411] [<ffffffff81435239>] ? n_tty_write+0x1b9/0x4d0
[ 56.910418] [<ffffffff816b8bd8>] ? _raw_spin_unlock_irqrestore+0x18/0x40
[ 56.910424] [<ffffffff816bc4a4>] ? __do_page_fault+0x204/0x500
[ 56.910430] [<ffffffff81431f6c>] ? tty_write+0x1cc/0x2b0
[ 56.910435] [<ffffffff81435080>] ? process_echoes+0x90/0x90
[ 56.910443] [<ffffffff811a2bcc>] do_vfs_ioctl+0x8c/0x4f0
[ 56.910450] [<ffffffff81190a6c>] ? vfs_write+0x16c/0x1e0
[ 56.910456] [<ffffffff811a30c1>] SyS_ioctl+0x91/0xb0
[ 56.910462] [<ffffffff816bc7ae>] ? do_page_fault+0xe/0x10
[ 56.910468] [<ffffffff816c0846>] system_call_fastpath+0x1a/0x1f
[ 56.910472] ---[ end trace 16cd56b9210c7fea ]---
[ 56.910475] ------------[ cut here ]------------
[ 56.910482] WARNING: CPU: 3 PID: 1979 at fs/btrfs/super.c:255
__btrfs_abort_transaction+0x12d/0x140()
[ 56.910485] btrfs: Transaction aborted (error -22)
[ 56.910487] Modules linked in: rfcomm(F) bnep(F)
serpent_avx_x86_64(F) serpent_sse2_x86_64(F) serpent_generic(F) lrw(F)
glue_helper(F) ablk_helper(F) cryptd(F) xts(F) gf128mul(F)
binfmt_misc(F) dm_crypt(F) arc4(F) ip6t_REJECT(F) xt_hl(F) ip6t_rt(F)
nf_conntrack_ipv6(F) nf_defrag_ipv6(F) ipt_REJECT(F) xt_LOG(F)
xt_limit(F) xt_tcpudp(F) xt_addrtype(F) iwldvm(F) nf_conntrack_ipv4(F)
btusb(F) nf_defrag_ipv4(F) mac80211(F) joydev(F) xt_state(F)
snd_hda_codec_hdmi(F) bluetooth(F) snd_hda_codec_idt(F)
snd_hda_intel(F) snd_hda_codec(F) psmouse(F) iwlwifi(F) snd_hwdep(F)
ip6table_filter(F) ip6_tables(F) snd_pcm(F) nf_conntrack_netbios_ns(F)
nf_conntrack_broadcast(F) nf_nat_ftp(F) nf_nat(F) nf_conntrack_ftp(F)
nf_conntrack(F) snd_page_alloc(F) iptable_filter(F) ip_tables(F)
snd_seq_midi(F) snd_seq_midi_event(F) dell_wmi(F) sparse_keymap(F)
x_tables(F) snd_rawmidi(F) dell_laptop(F) dcdbas(F) snd_seq(F)
cfg80211(F) serio_raw(F) lpc_ich(F) mfd_core(F) snd_seq_device(F)
snd_timer(F) snd(F) soundcore(F) hid_logitech_dj(F) usbhid(F) hid(F)
firewire_ohci(F) nouveau(F) ahci(F) libahci(F) mxm_wmi(F) e1000e(F)
wmi(F) ttm(F) firewire_core(F) sdhci_pci(F) crc_itu_t(F) sdhci(F)
ptp(F) pps_core(F) i915(F) video(F) i2c_algo_bit(F) drm_kms_helper(F)
drm(F) i2c_core(F)
[ 56.910579] CPU: 3 PID: 1979 Comm: btrfs Tainted: GF W
3.12.0-rc1-bcache-00060-g31b8586 #1
[ 56.910582] Hardware name: Dell Inc. Latitude E6520/0J4TFW, BIOS
A17 03/07/2013
[ 56.910584] 0000000000000009 ffff88022f7f5c18 ffffffff816b1dc3
ffff88022f7f5c60
[ 56.910590] ffff88022f7f5c50 ffffffff810480bc 00000000ffffffea
ffff88022d339800
[ 56.910595] ffff880231957000 ffffffff818465b0 00000000000008cc
ffff88022f7f5cb0
[ 56.910601] Call Trace:
[ 56.910607] [<ffffffff816b1dc3>] dump_stack+0x4e/0x82
[ 56.910613] [<ffffffff810480bc>] warn_slowpath_common+0x8c/0xc0
[ 56.910619] [<ffffffff810481ac>] warn_slowpath_fmt+0x4c/0x50
[ 56.910626] [<ffffffff8128981d>] __btrfs_abort_transaction+0x12d/0x140
[ 56.910631] [<ffffffff812e546c>] btrfs_ioctl_snap_destroy+0x64c/0x670
[ 56.910637] [<ffffffff812e7b08>] btrfs_ioctl+0x1018/0x25c0
[ 56.910642] [<ffffffff8115185c>] ? handle_mm_fault+0x42c/0x1030
[ 56.910648] [<ffffffff81435239>] ? n_tty_write+0x1b9/0x4d0
[ 56.910653] [<ffffffff816b8bd8>] ? _raw_spin_unlock_irqrestore+0x18/0x40
[ 56.910660] [<ffffffff816bc4a4>] ? __do_page_fault+0x204/0x500
[ 56.910664] [<ffffffff81431f6c>] ? tty_write+0x1cc/0x2b0
[ 56.910670] [<ffffffff81435080>] ? process_echoes+0x90/0x90
[ 56.910676] [<ffffffff811a2bcc>] do_vfs_ioctl+0x8c/0x4f0
[ 56.910681] [<ffffffff81190a6c>] ? vfs_write+0x16c/0x1e0
[ 56.910687] [<ffffffff811a30c1>] SyS_ioctl+0x91/0xb0
[ 56.910692] [<ffffffff816bc7ae>] ? do_page_fault+0xe/0x10
[ 56.910697] [<ffffffff816c0846>] system_call_fastpath+0x1a/0x1f
[ 56.910701] ---[ end trace 16cd56b9210c7feb ]---
[ 56.910706] BTRFS error (device dm-0) in
btrfs_ioctl_snap_destroy:2252: errno=-22 unknown
[ 56.910710] BTRFS info (device dm-0): forced readonly
[ 66.772123] btrfs: use spread ssd allocation scheme
[ 66.772133] btrfs: disk space caching is enabled
Thanks for any response,
Sincerely,
Roel Brook
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Deleting a subvolume causes RO remount
2013-09-22 22:30 Deleting a subvolume causes RO remount Rain Maker
@ 2013-09-23 1:54 ` Frank Holton
0 siblings, 0 replies; 2+ messages in thread
From: Frank Holton @ 2013-09-23 1:54 UTC (permalink / raw)
To: Rain Maker; +Cc: linux-btrfs
Hello,
The error shown in your log seems to be a regression related to
subvolumes and a new uuid tree.
See here
http://www.spinics.net/lists/linux-btrfs/msg27712.html
A patch that should fix the subvolume errors is here
http://www.spinics.net/lists/linux-btrfs/msg27717.html
You can try that patch or it looks like it might make it into rc2
Hope you have some luck
Frank
On Sun, Sep 22, 2013 at 6:30 PM, Rain Maker <rainmaker52@gmail.com> wrote:
> Hello list,
>
> I'm still busy trying to figure out how to get VMs running without
> corruption (see
> http://www.spinics.net/lists/linux-btrfs/msg27300.html) and in the
> process of this, I tried to remove the "@vmware" subvolume I've made.
>
> This seems to trigger some bug, as dmesg is showing an OOPS (2 I
> believe). The filesystem is then remounted read-only.
>
> I am running kernel 3.12-rc1, but I can also confirm this o 3.11.0.
> The storage setup is:
> - 2 physical disks (sda = HDD, sdb = SSD)
> - SSD is configured as bcache "caching device" for HDD (the "backing device")
> - /dev/bcache0 is a LVM PV, with one VG, and one LV (unfortunately,
> this was necessary for the Debian / Ubuntu setup to recognize the
> device as a non-partitionable device) formatted as BTRFS.
> - The BTRFS filesystem has several subvolumes (some done by the Ubuntu
> installer)
> - None of the subvolumes have any snapshots configured whatsoever
>
> Command I use to remove (maybe this is wrong?):
> # mount /dev/vgSystem/lvBTRFS /mnt
> # cd /mnt
> # ls
> @ @home @kvm @virtualbox @vmware
> # btrfs sub delete @vmware
>
> Here is the error from dmesg:
>
> [ 56.910180] ------------[ cut here ]------------
> [ 56.910197] WARNING: CPU: 3 PID: 1979 at fs/btrfs/uuid-tree.c:171
> btrfs_uuid_tree_rem+0x1ec/0x210()
> [ 56.910201] Modules linked in: rfcomm(F) bnep(F)
> serpent_avx_x86_64(F) serpent_sse2_x86_64(F) serpent_generic(F) lrw(F)
> glue_helper(F) ablk_helper(F) cryptd(F) xts(F) gf128mul(F)
> binfmt_misc(F) dm_crypt(F) arc4(F) ip6t_REJECT(F) xt_hl(F) ip6t_rt(F)
> nf_conntrack_ipv6(F) nf_defrag_ipv6(F) ipt_REJECT(F) xt_LOG(F)
> xt_limit(F) xt_tcpudp(F) xt_addrtype(F) iwldvm(F) nf_conntrack_ipv4(F)
> btusb(F) nf_defrag_ipv4(F) mac80211(F) joydev(F) xt_state(F)
> snd_hda_codec_hdmi(F) bluetooth(F) snd_hda_codec_idt(F)
> snd_hda_intel(F) snd_hda_codec(F) psmouse(F) iwlwifi(F) snd_hwdep(F)
> ip6table_filter(F) ip6_tables(F) snd_pcm(F) nf_conntrack_netbios_ns(F)
> nf_conntrack_broadcast(F) nf_nat_ftp(F) nf_nat(F) nf_conntrack_ftp(F)
> nf_conntrack(F) snd_page_alloc(F) iptable_filter(F) ip_tables(F)
> snd_seq_midi(F) snd_seq_midi_event(F) dell_wmi(F) sparse_keymap(F)
> x_tables(F) snd_rawmidi(F) dell_laptop(F) dcdbas(F) snd_seq(F)
> cfg80211(F) serio_raw(F) lpc_ich(F) mfd_core(F) snd_seq_device(F)
> snd_timer(F) snd(F) soundcore(F) hid_logitech_dj(F) usbhid(F) hid(F)
> firewire_ohci(F) nouveau(F) ahci(F) libahci(F) mxm_wmi(F) e1000e(F)
> wmi(F) ttm(F) firewire_core(F) sdhci_pci(F) crc_itu_t(F) sdhci(F)
> ptp(F) pps_core(F) i915(F) video(F) i2c_algo_bit(F) drm_kms_helper(F)
> drm(F) i2c_core(F)
> [ 56.910315] CPU: 3 PID: 1979 Comm: btrfs Tainted: GF
> 3.12.0-rc1-bcache-00060-g31b8586 #1
> [ 56.910318] Hardware name: Dell Inc. Latitude E6520/0J4TFW, BIOS
> A17 03/07/2013
> [ 56.910322] 0000000000000009 ffff88022f7f5c28 ffffffff816b1dc3
> 0000000000000000
> [ 56.910328] ffff88022f7f5c60 ffffffff810480bc ffff88023031ff00
> ffff88022ec30f00
> [ 56.910334] 0000000000000000 ffff880231c54000 0000000000000000
> ffff88022f7f5c70
> [ 56.910340] Call Trace:
> [ 56.910351] [<ffffffff816b1dc3>] dump_stack+0x4e/0x82
> [ 56.910359] [<ffffffff810480bc>] warn_slowpath_common+0x8c/0xc0
> [ 56.910366] [<ffffffff8104810a>] warn_slowpath_null+0x1a/0x20
> [ 56.910371] [<ffffffff8131e3bc>] btrfs_uuid_tree_rem+0x1ec/0x210
> [ 56.910377] [<ffffffff8128cde6>] ? btrfs_free_path+0x26/0x30
> [ 56.910384] [<ffffffff812e9a6a>] ? btrfs_insert_orphan_item+0x6a/0x90
> [ 56.910389] [<ffffffff812e5393>] btrfs_ioctl_snap_destroy+0x573/0x670
> [ 56.910395] [<ffffffff812e7b08>] btrfs_ioctl+0x1018/0x25c0
> [ 56.910403] [<ffffffff8115185c>] ? handle_mm_fault+0x42c/0x1030
> [ 56.910411] [<ffffffff81435239>] ? n_tty_write+0x1b9/0x4d0
> [ 56.910418] [<ffffffff816b8bd8>] ? _raw_spin_unlock_irqrestore+0x18/0x40
> [ 56.910424] [<ffffffff816bc4a4>] ? __do_page_fault+0x204/0x500
> [ 56.910430] [<ffffffff81431f6c>] ? tty_write+0x1cc/0x2b0
> [ 56.910435] [<ffffffff81435080>] ? process_echoes+0x90/0x90
> [ 56.910443] [<ffffffff811a2bcc>] do_vfs_ioctl+0x8c/0x4f0
> [ 56.910450] [<ffffffff81190a6c>] ? vfs_write+0x16c/0x1e0
> [ 56.910456] [<ffffffff811a30c1>] SyS_ioctl+0x91/0xb0
> [ 56.910462] [<ffffffff816bc7ae>] ? do_page_fault+0xe/0x10
> [ 56.910468] [<ffffffff816c0846>] system_call_fastpath+0x1a/0x1f
> [ 56.910472] ---[ end trace 16cd56b9210c7fea ]---
> [ 56.910475] ------------[ cut here ]------------
> [ 56.910482] WARNING: CPU: 3 PID: 1979 at fs/btrfs/super.c:255
> __btrfs_abort_transaction+0x12d/0x140()
> [ 56.910485] btrfs: Transaction aborted (error -22)
> [ 56.910487] Modules linked in: rfcomm(F) bnep(F)
> serpent_avx_x86_64(F) serpent_sse2_x86_64(F) serpent_generic(F) lrw(F)
> glue_helper(F) ablk_helper(F) cryptd(F) xts(F) gf128mul(F)
> binfmt_misc(F) dm_crypt(F) arc4(F) ip6t_REJECT(F) xt_hl(F) ip6t_rt(F)
> nf_conntrack_ipv6(F) nf_defrag_ipv6(F) ipt_REJECT(F) xt_LOG(F)
> xt_limit(F) xt_tcpudp(F) xt_addrtype(F) iwldvm(F) nf_conntrack_ipv4(F)
> btusb(F) nf_defrag_ipv4(F) mac80211(F) joydev(F) xt_state(F)
> snd_hda_codec_hdmi(F) bluetooth(F) snd_hda_codec_idt(F)
> snd_hda_intel(F) snd_hda_codec(F) psmouse(F) iwlwifi(F) snd_hwdep(F)
> ip6table_filter(F) ip6_tables(F) snd_pcm(F) nf_conntrack_netbios_ns(F)
> nf_conntrack_broadcast(F) nf_nat_ftp(F) nf_nat(F) nf_conntrack_ftp(F)
> nf_conntrack(F) snd_page_alloc(F) iptable_filter(F) ip_tables(F)
> snd_seq_midi(F) snd_seq_midi_event(F) dell_wmi(F) sparse_keymap(F)
> x_tables(F) snd_rawmidi(F) dell_laptop(F) dcdbas(F) snd_seq(F)
> cfg80211(F) serio_raw(F) lpc_ich(F) mfd_core(F) snd_seq_device(F)
> snd_timer(F) snd(F) soundcore(F) hid_logitech_dj(F) usbhid(F) hid(F)
> firewire_ohci(F) nouveau(F) ahci(F) libahci(F) mxm_wmi(F) e1000e(F)
> wmi(F) ttm(F) firewire_core(F) sdhci_pci(F) crc_itu_t(F) sdhci(F)
> ptp(F) pps_core(F) i915(F) video(F) i2c_algo_bit(F) drm_kms_helper(F)
> drm(F) i2c_core(F)
> [ 56.910579] CPU: 3 PID: 1979 Comm: btrfs Tainted: GF W
> 3.12.0-rc1-bcache-00060-g31b8586 #1
> [ 56.910582] Hardware name: Dell Inc. Latitude E6520/0J4TFW, BIOS
> A17 03/07/2013
> [ 56.910584] 0000000000000009 ffff88022f7f5c18 ffffffff816b1dc3
> ffff88022f7f5c60
> [ 56.910590] ffff88022f7f5c50 ffffffff810480bc 00000000ffffffea
> ffff88022d339800
> [ 56.910595] ffff880231957000 ffffffff818465b0 00000000000008cc
> ffff88022f7f5cb0
> [ 56.910601] Call Trace:
> [ 56.910607] [<ffffffff816b1dc3>] dump_stack+0x4e/0x82
> [ 56.910613] [<ffffffff810480bc>] warn_slowpath_common+0x8c/0xc0
> [ 56.910619] [<ffffffff810481ac>] warn_slowpath_fmt+0x4c/0x50
> [ 56.910626] [<ffffffff8128981d>] __btrfs_abort_transaction+0x12d/0x140
> [ 56.910631] [<ffffffff812e546c>] btrfs_ioctl_snap_destroy+0x64c/0x670
> [ 56.910637] [<ffffffff812e7b08>] btrfs_ioctl+0x1018/0x25c0
> [ 56.910642] [<ffffffff8115185c>] ? handle_mm_fault+0x42c/0x1030
> [ 56.910648] [<ffffffff81435239>] ? n_tty_write+0x1b9/0x4d0
> [ 56.910653] [<ffffffff816b8bd8>] ? _raw_spin_unlock_irqrestore+0x18/0x40
> [ 56.910660] [<ffffffff816bc4a4>] ? __do_page_fault+0x204/0x500
> [ 56.910664] [<ffffffff81431f6c>] ? tty_write+0x1cc/0x2b0
> [ 56.910670] [<ffffffff81435080>] ? process_echoes+0x90/0x90
> [ 56.910676] [<ffffffff811a2bcc>] do_vfs_ioctl+0x8c/0x4f0
> [ 56.910681] [<ffffffff81190a6c>] ? vfs_write+0x16c/0x1e0
> [ 56.910687] [<ffffffff811a30c1>] SyS_ioctl+0x91/0xb0
> [ 56.910692] [<ffffffff816bc7ae>] ? do_page_fault+0xe/0x10
> [ 56.910697] [<ffffffff816c0846>] system_call_fastpath+0x1a/0x1f
> [ 56.910701] ---[ end trace 16cd56b9210c7feb ]---
> [ 56.910706] BTRFS error (device dm-0) in
> btrfs_ioctl_snap_destroy:2252: errno=-22 unknown
> [ 56.910710] BTRFS info (device dm-0): forced readonly
> [ 66.772123] btrfs: use spread ssd allocation scheme
> [ 66.772133] btrfs: disk space caching is enabled
>
> Thanks for any response,
> Sincerely,
> Roel Brook
> --
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-09-22 22:30 Deleting a subvolume causes RO remount Rain Maker
2013-09-23 1:54 ` Frank Holton
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