Re: read time block corruption on root partition, Not booting

jollemeyer
2019-12-22T10:04:05Z

Dear Qu,

I had a typo in my previous "btrfs dump tree" command (/dev/sda1 instead of /
dev/sda). Now I got the output below:

btrfs-progs v5.4
leaf 2089035464704 items 145 free space 4973 generation 75450 owner
EXTENT_TREE
leaf 2089035464704 flags 0x1(WRITTEN) backref revision 1
fs uuid 014bdf0a-bcb3-4a7c-b58d-c1fc17281f7e
chunk uuid d4aae6e9-9832-4da5-a269-0a46e54a4e33
item 0 key (1937095585792 EXTENT_ITEM 4096) itemoff 16230 itemsize
53
refs 1 gen 68673 flags DATA
extent data backref root FS_TREE objectid 17045 offset
213512192 count 1
item 1 key (1937095589888 EXTENT_ITEM 12288) itemoff 16177 itemsize
53
refs 1 gen 54558 flags DATA
extent data backref root FS_TREE objectid 17045 offset
217124864 count 1
item 2 key (1937095602176 EXTENT_ITEM 20480) itemoff 16124 itemsize
53
refs 1 gen 39896 flags DATA
extent data backref root FS_TREE objectid 17045 offset
209100800 count 1
item 3 key (1937095622656 EXTENT_ITEM 4096) itemoff 16071 itemsize
53
refs 1 gen 72453 flags DATA
extent data backref root FS_TREE objectid 17045 offset
153509888 count 1
item 4 key (1937095626752 EXTENT_ITEM 4096) itemoff 16018 itemsize
53
refs 1 gen 72455 flags DATA
extent data backref root FS_TREE objectid 17045 offset
151752704 count 1
item 5 key (1937095630848 EXTENT_ITEM 4096) itemoff 15965 itemsize
53
refs 1 gen 72455 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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item 6 key (1937095634944 EXTENT_ITEM 4096) itemoff 15912 itemsize
53
refs 1 gen 54560 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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53
refs 1 gen 39886 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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53
refs 1 gen 72307 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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53
refs 1 gen 41223 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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53
refs 1 gen 39867 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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53
refs 1 gen 56946 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
refs 1 gen 39867 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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53
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53
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
refs 1 gen 39528 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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53
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53
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53
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53
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53
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53
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
refs 1 gen 74191 flags DATA
extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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53
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53
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53
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
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extent data backref root FS_TREE objectid 17045 offset
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53
refs 2 gen 74067 flags DATA
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53
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53
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53
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53
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53
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53
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53
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53
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53
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53
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53
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item 128 key (1937097007104 EXTENT_ITEM 4096) itemoff 9446 itemsize
53
refs 1 gen 40908 flags DATA
extent data backref root FS_TREE objectid 17045 offset
211116032 count 1
item 129 key (1937097011200 EXTENT_ITEM 8192) itemoff 9393 itemsize
53
refs 1 gen 72772 flags DATA
extent data backref root FS_TREE objectid 17045 offset
158105600 count 1
item 130 key (1937097019392 EXTENT_ITEM 16384) itemoff 9340 itemsize
53
refs 1 gen 39528 flags DATA
extent data backref root FS_TREE objectid 17045 offset
207421440 count 1
item 131 key (1937097035776 EXTENT_ITEM 4096) itemoff 9287 itemsize
53
refs 1 gen 40127 flags DATA
extent data backref root FS_TREE objectid 17045 offset
208486400 count 1
item 132 key (1937097039872 EXTENT_ITEM 28672) itemoff 9234 itemsize
53
refs 1 gen 39897 flags DATA
extent data backref root FS_TREE objectid 17045 offset
208941056 count 1
item 133 key (1937097068544 EXTENT_ITEM 20480) itemoff 9181 itemsize
53
refs 1 gen 39927 flags DATA
extent data backref root FS_TREE objectid 17045 offset
209039360 count 1
item 134 key (1937097093120 EXTENT_ITEM 4096) itemoff 9128 itemsize
53
refs 1 gen 40127 flags DATA
extent data backref root FS_TREE objectid 17045 offset
208900096 count 1
item 135 key (1937097097216 EXTENT_ITEM 4096) itemoff 9075 itemsize
53
refs 1 gen 39867 flags DATA
extent data backref root FS_TREE objectid 17045 offset
208367616 count 1
item 136 key (1937097101312 EXTENT_ITEM 24576) itemoff 9022 itemsize
53
refs 1 gen 39901 flags DATA
extent data backref root FS_TREE objectid 17045 offset
209039360 count 1
item 137 key (1937097125888 EXTENT_ITEM 16384) itemoff 8969 itemsize
53
refs 1 gen 40082 flags DATA
extent data backref root FS_TREE objectid 17045 offset
209321984 count 1
item 138 key (1937097142272 EXTENT_ITEM 40960) itemoff 8916 itemsize
53
refs 1 gen 39867 flags DATA
extent data backref root FS_TREE objectid 17045 offset
208637952 count 1
item 139 key (1937097183232 EXTENT_ITEM 20480) itemoff 8863 itemsize
53
refs 1 gen 39966 flags DATA
extent data backref root FS_TREE objectid 17045 offset
209797120 count 1
item 140 key (1937097203712 EXTENT_ITEM 20480) itemoff 8810 itemsize
53
refs 1 gen 40127 flags DATA
extent data backref root FS_TREE objectid 17045 offset
208896000 count 1
item 141 key (1937097224192 EXTENT_ITEM 16384) itemoff 8757 itemsize
53
refs 1 gen 40024 flags DATA
extent data backref root FS_TREE objectid 17045 offset
210653184 count 1
item 142 key (1937097240576 EXTENT_ITEM 4096) itemoff 8704 itemsize
53
refs 1 gen 72442 flags DATA
extent data backref root FS_TREE objectid 17045 offset
151691264 count 1
item 143 key (1937097244672 EXTENT_ITEM 8192) itemoff 8651 itemsize
53
refs 1 gen 39528 flags DATA
extent data backref root FS_TREE objectid 17045 offset
207384576 count 1
item 144 key (1937097252864 EXTENT_ITEM 12288) itemoff 8598 itemsize
53
refs 1 gen 56865 flags DATA
extent data backref root FS_TREE objectid 17045 offset
205619200 count 1

The full output of "btrfs check --readonly /dev/sda" command is as below:

[1/7] checking root items
[2/7] checking extents
incorrect local backref count on 1937096425472 root 5 owner 17045 offset
212492288 found 1 wanted 1048577 back 0x55f258caa470
backpointer mismatch on [1937096425472 4096]
ERROR: errors found in extent allocation tree or chunk allocation
[3/7] checking free space cache
[4/7] checking fs roots
[5/7] checking only csums items (without verifying data)
[6/7] checking root refs
[7/7] checking quota groups skipped (not enabled on this FS)
Opening filesystem to check...
Checking filesystem on /dev/sda
UUID: 014bdf0a-bcb3-4a7c-b58d-c1fc17281f7e
found 1386975199232 bytes used, error(s) found
total csum bytes: 1352697008
total tree bytes: 1508327424
total fs tree bytes: 61161472
total extent tree bytes: 37421056
btree space waste bytes: 55303865
file data blocks allocated: 1388605296640
referenced 1385670742016

I did "btrfs rescue zero-log /dev/sda" but that did not change the output of
"btrfs check" performed afterwards.

regards,

Jörg

Am Sonntag, 22. Dezember 2019, 01:59:16 CET schrieben Sie:
> On 2019/12/21 下午10:55, jollemeyer@gmx.de wrote:
> > Dear Qu,
> >
> > the output is as follows:
> > #btrfs ins dump-tree - b 2089035464704 /dev/sda1
> > btrfs-progs v5.4
> > No mapping for 2089035464704 - 2089035481088
> > Couldn't map the block 2089035464704
> > Couldn't map the block 2089035464704
> > Bad tree Block 2089035464704, bytenr mismatch, want 2089035464704, have 0
> > ERROR: failed to read tree Block 2089035464704
>
> That's strange. The tree block isn't even mapped.
>
> But from the dmesg, it shows there is an extent item in log tree, which
> doesn't look sane.
>
> BTW, what's the stderr from `btrfs check` I guess you have only patesd
> the stdout thus no real error message.
>
> Anyway, you can solve it by `btrfs rescue zero-log`, but I doubt there
> are more problems than we expect.
>
> Thanks,
> Qu
>
> > Many thanks.
> >
> > Jörg
> >
> > -----Original Message-----
> > From: Qu Wenruo <quwenruo.btrfs@gmx.com>
> > To: jollemeyer@gmx.de, linux-btrfs@vger.kernel.org
> > Sent: Sa., 21 Dez. 2019 15:19
> > Subject: Re: read time block corruption on root partition, Not booting
> >
> > On 2019/12/21 下午10:06, jollemeyer@gmx.de wrote:
> >> Dear all,
> >>
> >> on my BTRFS root partition (/dev/sda), a "read time block corruption" was
> >> detected. The system refuses to boot. Current kernel is 5.4.2-1-Manjaro.
> >>
> >> Systemd's journalctl generated the following output:
> >>
> >> Dez 21 10:46:41 Phoenix kernel: BTRFS critical (device sda): corrupt
> >> leaf: block=2089035464704 slot=85 extent bytenr=1937096425472 len=4096
> >> invalid extent refs, have 1 expect >= inline 1048577 Dez 21 10:46:41
> >> Phoenix kernel: BTRFS error (device sda): block=2089035464704 read time
> >> tree block corruption detected Dez 21 10:46:41 Phoenix kernel: BTRFS
> >> critical (device sda): corrupt leaf: block=2089035464704 slot=85 extent
> >> bytenr=1937096425472 len=4096 invalid extent refs, have 1 expect >=
> >> inline 1048577 Dez 21 10:46:41 Phoenix kernel: BTRFS error (device sda):
> >> block=2089035464704 read time tree block corruption detected Dez 21
> >> 10:46:41 Phoenix kernel: BTRFS critical (device sda): corrupt leaf:
> >> block=2089035464704 slot=85 extent bytenr=1937096425472 len=4096 invalid
> >> extent refs, have 1 expect >= inline 1048577 Dez 21 10:46:41 Phoenix
> >> kernel: BTRFS error (device sda): block=2089035464704 read time tree
> >> block corruption detected Dez 21 10:46:41 Phoenix kernel: BTRFS critical
> >> (device sda): corrupt leaf: block=2089035464704 slot=85 extent
> >> bytenr=1937096425472 len=4096 invalid extent refs, have 1 expect >=
> >> inline 1048577 Dez 21 10:46:41 Phoenix kernel: BTRFS error (device sda):
> >> block=2089035464704 read time tree block corruption detected Dez 21
> >> 10:46:41 Phoenix kernel: BTRFS: error (device sda) in
> >> btrfs_replay_log:2293: errno=-5 IO failure (Failed to recover log tree)>
> > "btrfs ins dump-tree -b 2089035464704 /dev/sda" output please.
> >
> > Thanks,
> > Qu
> >
> >> Dez 21 10:46:41 Phoenix kernel: ------------[ cut here ]------------
> >> Dez 21 10:46:41 Phoenix kernel: WARNING: CPU: 7 PID: 621 at
> >> fs/btrfs/block-group.c:132 btrfs_put_block_group+0x42/0x50 [btrfs] Dez
> >> 21 10:46:41 Phoenix kernel: Modules linked in: usblp snd_hda_codec_hdmi
> >> intel_rapl_msr snd_hda_codec_realtek intel_rapl_common
> >> snd_hda_codec_generic ext4 ledtrig_audio x86_pkg_temp_thermal
> >> intel_powerclamp coretemp crc16 kvm_intel mbcache i915 jbd2 kvm
> >> snd_hda_intel snd_intel_nhlt i2c_algo_bit irqbypass drm_kms_helper
> >> snd_hda_codec crct10dif_pclmul crc32_pclmul snd_hda_core mousedev
> >> ghash_clmulni_intel drm snd_hwdep snd_pcm aesni_intel crypto_simd cryptd
> >> glue_helper mei_hdcp intel_cstate iTCO_wdt intel_gtt snd_timer
> >> iTCO_vendor_support intel_uncore mei_me intel_rapl_perf input_leds
> >> agpgart i2c_i801 snd syscopyarea mei sysfillrect lpc_ich r8168(OE)
> >> sysimgblt soundcore fb_sys_fops evdev ie31200_edac mac_hid vboxpci(OE)
> >> vboxnetflt(OE) vboxnetadp(OE) vboxdrv(OE) sg crypto_user ip_tables
> >> x_tables hid_generic usbhid hid btrfs libcrc32c crc32c_generic xor uas
> >> usb_storage raid6_pq sr_mod cdrom sd_mod ahci serio_raw atkbd libahci
> >> libps2 libata xhci_pci scsi_mod xhci_hcd ehci_pci crc32c_intel ehci_hcd
> >> i8042 serio Dez 21 10:46:41 Phoenix kernel: CPU: 7 PID: 621 Comm: mount
> >> Tainted: G OE 5.4.2-1-MANJARO #1 Dez 21 10:46:41 Phoenix
> >> kernel: Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./H77
> >> Pro4/MVP, BIOS P1.40 09/04/2012 Dez 21 10:46:41 Phoenix kernel: RIP:
> >> 0010:btrfs_put_block_group+0x42/0x50 [btrfs] Dez 21 10:46:41 Phoenix
> >> kernel: Code: 2d 48 83 7d 50 00 75 22 48 8b 85 e8 01 00 00 48 85 c0 75
> >> 1e 48 8b bd d8 00 00 00 e8 a8 08 66 d9 48 89 ef 5d e9 9f 08 66 d9 c3
> >> <0f> 0b eb da 0f 0b eb cf 0f 0b eb de 66 90 0f 1f 44 00 00 31 d2 e9 Dez
> >> 21 10:46:41 Phoenix kernel: RSP: 0018:ffffa95900f47ae8 EFLAGS: 00010206
> >> Dez 21 10:46:41 Phoenix kernel: RAX: 0000000000000001 RBX:
> >> ffff8a1eb7bfe0e0 RCX: 0000000000000000 Dez 21 10:46:41 Phoenix kernel:
> >> RDX: 0000000000000001 RSI: ffff8a1ecf5f0250 RDI: ffff8a1eb7bfe000 Dez 21
> >> 10:46:41 Phoenix kernel: RBP: ffff8a1eb7bfe000 R08: 0000000000000000
> >> R09: 0000000000000001 Dez 21 10:46:41 Phoenix kernel: R10:
> >> 00000000003f6c00 R11: 0000000000000000 R12: ffff8a1ec81b0080 Dez 21
> >> 10:46:41 Phoenix kernel: R13: ffff8a1ec81b0090 R14: ffff8a1eb7bfe000
> >> R15: dead000000000100 Dez 21 10:46:41 Phoenix kernel: FS:
> >> 00007f77003d7500(0000) GS:ffff8a1ecf5c0000(0000) knlGS:0000000000000000
> >> Dez 21 10:46:41 Phoenix kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
> >> 0000000080050033 Dez 21 10:46:41 Phoenix kernel: CR2: 0000559652364460
> >> CR3: 00000003fbaec005 CR4: 00000000001606e0 Dez 21 10:46:41 Phoenix
> >> kernel: Call Trace:
> >> Dez 21 10:46:41 Phoenix kernel: btrfs_free_block_groups+0x11c/0x260
> >> [btrfs] Dez 21 10:46:41 Phoenix kernel: open_ctree+0x187a/0x1bc0
> >> [btrfs]
> >> Dez 21 10:46:41 Phoenix kernel: btrfs_mount_root+0x57b/0x670 [btrfs]
> >> Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40
> >> Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0
> >> Dez 21 10:46:41 Phoenix kernel: fc_mount+0xe/0x30
> >> Dez 21 10:46:41 Phoenix kernel: vfs_kern_mount.part.0+0x71/0x90
> >> Dez 21 10:46:41 Phoenix kernel: btrfs_mount+0x18e/0x930 [btrfs]
> >> Dez 21 10:46:41 Phoenix kernel: ? filename_lookup+0x105/0x190
> >> Dez 21 10:46:41 Phoenix kernel: ? legacy_get_tree+0x27/0x40
> >> Dez 21 10:46:41 Phoenix kernel: ? btrfs_remount+0x4d0/0x4d0 [btrfs]
> >> Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40
> >> Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0
> >> Dez 21 10:46:41 Phoenix kernel: do_mount+0x77a/0xa30
> >> Dez 21 10:46:41 Phoenix kernel: ksys_mount+0x7e/0xc0
> >> Dez 21 10:46:41 Phoenix kernel: __x64_sys_mount+0x21/0x30
> >> Dez 21 10:46:41 Phoenix kernel: do_syscall_64+0x4e/0x140
> >> Dez 21 10:46:41 Phoenix kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
> >> Dez 21 10:46:41 Phoenix kernel: RIP: 0033:0x7f770055ae4e
> >> Dez 21 10:46:41 Phoenix kernel: Code: 48 8b 0d 35 00 0c 00 f7 d8 64 89 01
> >> 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8
> >> a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 02 00 0c 00 f7
> >> d8 64 89 01 48 Dez 21 10:46:41 Phoenix kernel: RSP:
> >> 002b:00007ffedb3135c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 Dez 21
> >> 10:46:41 Phoenix kernel: RAX: ffffffffffffffda RBX: 00007f7700681204
> >> RCX: 00007f770055ae4e Dez 21 10:46:41 Phoenix kernel: RDX:
> >> 000055d9705f5650 RSI: 000055d9705f56f0 RDI: 000055d9705f73d0 Dez 21
> >> 10:46:41 Phoenix kernel: RBP: 000055d9705f5440 R08: 000055d9705f5670
> >> R09: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: R10:
> >> 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 Dez 21
> >> 10:46:41 Phoenix kernel: R13: 000055d9705f73d0 R14: 000055d9705f5650
> >> R15: 000055d9705f5440 Dez 21 10:46:41 Phoenix kernel: ---[ end trace
> >> 71465d442bb4c509 ]--- Dez 21 10:46:41 Phoenix kernel: ------------[ cut
> >> here ]------------ Dez 21 10:46:41 Phoenix kernel: WARNING: CPU: 0 PID:
> >> 621 at fs/btrfs/block-group.c:3166 btrfs_free_block_groups+0x1ea/0x260
> >> [btrfs] Dez 21 10:46:41 Phoenix kernel: Modules linked in: usblp
> >> snd_hda_codec_hdmi intel_rapl_msr snd_hda_codec_realtek
> >> intel_rapl_common snd_hda_codec_generic ext4 ledtrig_audio
> >> x86_pkg_temp_thermal intel_powerclamp coretemp crc16 kvm_intel mbcache
> >> i915 jbd2 kvm snd_hda_intel snd_intel_nhlt i2c_algo_bit irqbypass
> >> drm_kms_helper snd_hda_codec crct10dif_pclmul crc32_pclmul snd_hda_core
> >> mousedev ghash_clmulni_intel drm snd_hwdep snd_pcm aesni_intel
> >> crypto_simd cryptd glue_helper mei_hdcp intel_cstate iTCO_wdt intel_gtt
> >> snd_timer iTCO_vendor_support intel_uncore mei_me intel_rapl_perf
> >> input_leds agpgart i2c_i801 snd syscopyarea mei sysfillrect lpc_ich
> >> r8168(OE) sysimgblt soundcore fb_sys_fops evdev ie31200_edac mac_hid
> >> vboxpci(OE) vboxnetflt(OE) vboxnetadp(OE) vboxdrv(OE) sg crypto_user
> >> ip_tables x_tables hid_generic usbhid hid btrfs libcrc32c crc32c_generic
> >> xor uas usb_storage raid6_pq sr_mod cdrom sd_mod ahci serio_raw atkbd
> >> libahci libps2 libata xhci_pci scsi_mod xhci_hcd ehci_pci crc32c_intel
> >> ehci_hcd i8042 serio Dez 21 10:46:41 Phoenix kernel: CPU: 0 PID: 621
> >> Comm: mount Tainted: G W OE 5.4.2-1-MANJARO #1 Dez 21
> >> 10:46:41 Phoenix kernel: Hardware name: To Be Filled By O.E.M. To Be
> >> Filled By O.E.M./H77 Pro4/MVP, BIOS P1.40 09/04/2012 Dez 21 10:46:41
> >> Phoenix kernel: RIP: 0010:btrfs_free_block_groups+0x1ea/0x260 [btrfs]
> >> Dez 21 10:46:41 Phoenix kernel: Code: 49 bd 22 01 00 00 00 00 ad de e8
> >> 51 13 d1 d9 e8 0c d3 4e d9 48 89 ef e8 64 9b ff ff 48 8b 85 00 10 00 00
> >> 49 39 c4 75 3c eb 5f <0f> 0b 31 c9 31 d2 4c 89 fe 48 89 ef e8 55 85 ff
> >> ff 48 8b 43 08 48 Dez 21 10:46:41 Phoenix kernel: RSP:
> >> 0018:ffffa95900f47af8 EFLAGS: 00010206 Dez 21 10:46:41 Phoenix kernel:
> >> RAX: ffff8a1eca367488 RBX: ffff8a1eca367488 RCX: 0000000000000000 Dez 21
> >> 10:46:41 Phoenix kernel: RDX: 0000000000000001 RSI: ffff8a1eca364200
> >> RDI: 00000000ffffffff Dez 21 10:46:41 Phoenix kernel: RBP:
> >> ffff8a1ec81b0000 R08: 0000000000000000 R09: 0000000020000000 Dez 21
> >> 10:46:41 Phoenix kernel: R10: 0000000000000005 R11: ffffffffffd5ce37
> >> R12: ffff8a1ec81b1000 Dez 21 10:46:41 Phoenix kernel: R13:
> >> dead000000000122 R14: dead000000000100 R15: ffff8a1eca367400 Dez 21
> >> 10:46:41 Phoenix kernel: FS: 00007f77003d7500(0000)
> >> GS:ffff8a1ecf400000(0000) knlGS:0000000000000000 Dez 21 10:46:41 Phoenix
> >> kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Dez 21
> >> 10:46:41 Phoenix kernel: CR2: 0000559006e55d68 CR3: 00000003fbaec006
> >> CR4: 00000000001606f0 Dez 21 10:46:41 Phoenix kernel: Call Trace:
> >> Dez 21 10:46:41 Phoenix kernel: open_ctree+0x187a/0x1bc0 [btrfs]
> >> Dez 21 10:46:41 Phoenix kernel: btrfs_mount_root+0x57b/0x670 [btrfs]
> >> Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40
> >> Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0
> >> Dez 21 10:46:41 Phoenix kernel: fc_mount+0xe/0x30
> >> Dez 21 10:46:41 Phoenix kernel: vfs_kern_mount.part.0+0x71/0x90
> >> Dez 21 10:46:41 Phoenix kernel: btrfs_mount+0x18e/0x930 [btrfs]
> >> Dez 21 10:46:41 Phoenix kernel: ? filename_lookup+0x105/0x190
> >> Dez 21 10:46:41 Phoenix kernel: ? legacy_get_tree+0x27/0x40
> >> Dez 21 10:46:41 Phoenix kernel: ? btrfs_remount+0x4d0/0x4d0 [btrfs]
> >> Dez 21 10:46:41 Phoenix kernel: legacy_get_tree+0x27/0x40
> >> Dez 21 10:46:41 Phoenix kernel: vfs_get_tree+0x25/0xb0
> >> Dez 21 10:46:41 Phoenix kernel: do_mount+0x77a/0xa30
> >> Dez 21 10:46:41 Phoenix kernel: ksys_mount+0x7e/0xc0
> >> Dez 21 10:46:41 Phoenix kernel: __x64_sys_mount+0x21/0x30
> >> Dez 21 10:46:41 Phoenix kernel: do_syscall_64+0x4e/0x140
> >> Dez 21 10:46:41 Phoenix kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
> >> Dez 21 10:46:41 Phoenix kernel: RIP: 0033:0x7f770055ae4e
> >> Dez 21 10:46:41 Phoenix kernel: Code: 48 8b 0d 35 00 0c 00 f7 d8 64 89 01
> >> 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8
> >> a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 02 00 0c 00 f7
> >> d8 64 89 01 48 Dez 21 10:46:41 Phoenix kernel: RSP:
> >> 002b:00007ffedb3135c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 Dez 21
> >> 10:46:41 Phoenix kernel: RAX: ffffffffffffffda RBX: 00007f7700681204
> >> RCX: 00007f770055ae4e Dez 21 10:46:41 Phoenix kernel: RDX:
> >> 000055d9705f5650 RSI: 000055d9705f56f0 RDI: 000055d9705f73d0 Dez 21
> >> 10:46:41 Phoenix kernel: RBP: 000055d9705f5440 R08: 000055d9705f5670
> >> R09: 0000000000000000 Dez 21 10:46:41 Phoenix kernel: R10:
> >> 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 Dez 21
> >> 10:46:41 Phoenix kernel: R13: 000055d9705f73d0 R14: 000055d9705f5650
> >> R15: 000055d9705f5440 Dez 21 10:46:41 Phoenix kernel: ---[ end trace
> >> 71465d442bb4c50a ]--- Dez 21 10:46:41 Phoenix kernel: BTRFS info (device
> >> sda): space_info 1 has 733175808 free, is not full Dez 21 10:46:41
> >> Phoenix kernel: BTRFS info (device sda): space_info total=1386200694784,
> >> used=1385467318272, pinned=0, reserved=4096, may_use=0, readonly=196608
> >> Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda):
> >> global_block_rsv: size 0 reserved 0 Dez 21 10:46:41 Phoenix kernel:
> >> BTRFS info (device sda): trans_block_rsv: size 0 reserved 0 Dez 21
> >> 10:46:41 Phoenix kernel: BTRFS info (device sda): chunk_block_rsv: size
> >> 0 reserved 0 Dez 21 10:46:41 Phoenix kernel: BTRFS info (device sda):
> >> delayed_block_rsv: size 0 reserved 0 Dez 21 10:46:41 Phoenix kernel:
> >> BTRFS info (device sda): delayed_refs_rsv: size 0 reserved 0 Dez 21
> >> 10:46:41 Phoenix kernel: BTRFS error (device sda): open_ctree failed --
> >> Subject: Unit process exited
> >> -- Defined-By: systemd
> >>
> >> Btrfs check --readonly /dev/sda also found errors:
> >>
> >> Opening filesystem to check...
> >> Checking filesystem on /dev/sda
> >> UUID: 014bdf0a-bcb3-4a7c-b58d-c1fc17281f7e
> >> found 1386975199232 bytes used, error(s) found
> >> total csum bytes: 1352697008
> >> total tree bytes: 1508327424
> >> total fs tree bytes: 61161472
> >> total extent tree bytes: 37421056
> >> btree space waste bytes: 55303865
> >> file data blocks allocated: 1388605296640
> >>
> >> referenced 1385670742016
> >>
> >> Btrfs scrub does not recognize any errors.
> >>
> >> Kindly help me to recover this error.
> >>
> >> many thanks,
> >>
> >> Jörg Meyer