Hi!
I'v hit a BUG ON during btrfs check:
-----------------------------------------------------
server:~# btrfs check --progress --repair /dev/sde
enabling repair mode
Opening filesystem to check...
Checking filesystem on /dev/sde
UUID: d5fa971b-6546-424d-87c1-dcd688eacdac
[1/7] checking root items (0:59:38 elapsed, 104205418 items checked)
Fixed 0 roots.
[2/7] checking extents (3:12:27 elapsed, 5[2/7] checking extents (3:12:28 elapsed, 5234ref mismatch on [30539776 16384] extent item 0, found 1 elapsed, 7917478 items checked)
tree backref 30539776 parent 2 root 2 not found in extent tree
backpointer mismatch on [30539776 16384]
adding new tree backref on start 30539776 len 16384 parent 0 root 217548 items checked) btrfs unable to find ref byte nr 693215772672 parent 0 root 2 owner 1 offset 0checked) transaction.c:168: btrfs_commit_transaction: BUG_ON `ret` triggered, value -5
btrfs(+0x3b748)[0x562bc6163748]
btrfs(btrfs_commit_transaction+0x53)[0x562bc6163af5]
btrfs(+0x554bc)[0x562bc617d4bc]
btrfs(cmd_check+0x1288)[0x562bc617ee75]
btrfs(main+0x1f3)[0x562bc613be63]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7fc93c23bb45]
btrfs(_start+0x2a)[0x562bc613beaa]
Abgebrochen
-----------------------------------------------------

Kernel: 4.19.0-2-amd64 #1 SMP Debian 4.19.16-1 (2019-01-17) x86_64 GNU/Linux

btrfs-progs v4.20.1

After that I mounted the fs and got this:
-----------------------------------------------------
[54682.472317] BTRFS info (device sdf): enabling inode map caching
[54682.472321] BTRFS info (device sdf): disk space caching is enabled
[54682.472324] BTRFS info (device sdf): has skinny extents
[54710.634379] BTRFS info (device sdf): checking UUID tree
[54776.365908] BTRFS error (device sdf): parent transid verify failed on 30539776 wanted 695635 found 695646 [54776.365916] BTRFS error (device sdf): parent transid verify failed on 30539776 wanted 695635 found 695646 [54780.325562] BTRFS error (device sdf): parent transid verify failed on 30539776 wanted 695635 found 695646 [54780.325567] BTRFS error (device sdf): parent transid verify failed on 30539776 wanted 695635 found 695646
-----------------------------------------------------

/dev/sde, ID: 2
   Device size:             3.64TiB
   Device slack:              0.00B
   Data,RAID1:              2.29TiB
   Metadata,single:       800.00MiB
   Metadata,RAID1:        124.00GiB
   System,RAID1:            8.00MiB
   Unallocated:             1.23TiB

/dev/sdf, ID: 1
   Device size:             3.64TiB
   Device slack:              0.00B
   Data,single:             8.00MiB
   Data,RAID1:              2.29TiB
   Metadata,single:       816.00MiB
   Metadata,RAID1:        124.00GiB
   System,single:           4.00MiB
   System,RAID1:            8.00MiB
   Unallocated:             1.23TiB
[54682.472317] BTRFS info (device sdf): enabling inode map caching
[54682.472321] BTRFS info (device sdf): disk space caching is enabled
[54682.472324] BTRFS info (device sdf): has skinny extents
[54710.634379] BTRFS info (device sdf): checking UUID tree
[54776.365908] BTRFS error (device sdf): parent transid verify failed on 
30539776 wanted 695635 found 695646
[54776.365916] BTRFS error (device sdf): parent transid verify failed on 
30539776 wanted 695635 found 695646
[54780.325562] BTRFS error (device sdf): parent transid verify failed on 
30539776 wanted 695635 found 695646
[54780.325567] BTRFS error (device sdf): parent transid verify failed on 
30539776 wanted 695635 found 695646
[54980.930943] INFO: task btrfs-transacti:23138 blocked for more than 120 
seconds.
[54980.930945]       Tainted: G            E     4.19.0-2-amd64 #1 Debian 
4.19.16-1
[54980.930946] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this 
message.
[54980.930947] btrfs-transacti D    0 23138      2 0x80000000
[54980.930950] Call Trace:
[54980.930957]  ? __schedule+0x2a2/0x870
[54980.930959]  ? kmem_cache_alloc_trace+0x155/0x1d0
[54980.930961]  schedule+0x28/0x80
[54980.930987]  wait_block_group_cache_progress+0xa0/0xd0 [btrfs]
[54980.930989]  ? finish_wait+0x80/0x80
[54980.931008]  find_free_extent+0x50c/0x1070 [btrfs]
[54980.931026]  btrfs_reserve_extent+0x9b/0x180 [btrfs]
[54980.931046]  __btrfs_prealloc_file_range+0x121/0x450 [btrfs]
[54980.931064]  cache_save_setup+0x1d4/0x3c0 [btrfs]
[54980.931081]  btrfs_setup_space_cache+0x97/0xc0 [btrfs]
[54980.931099]  commit_cowonly_roots+0xde/0x2f0 [btrfs]
[54980.931120]  ? btrfs_qgroup_account_extents+0xba/0x1d0 [btrfs]
[54980.931140]  btrfs_commit_transaction+0x310/0x870 [btrfs]
[54980.931160]  ? start_transaction+0x9b/0x3e0 [btrfs]
[54980.931179]  transaction_kthread+0x147/0x180 [btrfs]
[54980.931198]  ? btrfs_cleanup_transaction+0x520/0x520 [btrfs]
[54980.931200]  kthread+0x112/0x130
[54980.931202]  ? kthread_bind+0x30/0x30
[54980.931204]  ret_from_fork+0x35/0x40
[54997.668292] WARNING: CPU: 2 PID: 23138 at fs/btrfs/extent-tree.c:6795 
__btrfs_free_extent.isra.74+0x61e/0x940 [btrfs]
[54997.668296] Modules linked in: xt_mark(E) cls_fw(E) sch_sfq(E) sch_htb(E) 
nfnetlink_queue(E) nfnetlink_log(E) bluetooth(E) xt_conntrack(E) drbg(E) 
ansi_cprng(E) ecdh_generic(E) nf_log_ipv4(E) nf_log_common(E) intel_rapl(E) 
x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) kvm_intel(E) kvm(E) 
iTCO_wdt(E) irqbypass(E) iTCO_vendor_support(E) crct10dif_pclmul(E) 
crc32_pclmul(E) ghash_clmulni_intel(E) intel_cstate(E) eeepc_wmi(E) 
intel_uncore(E) asus_wmi(E) sparse_keymap(E) rfkill(E) serio_raw(E) 
intel_rapl_perf(E) wmi_bmof(E) i915(E) mei_me(E) mei(E) lpc_ich(E) 
pcc_cpufreq(E) fuse(E) autofs4(E) forcedeth(E) pata_amd(E) sky2(E) 
firewire_ohci(E) firewire_core(E) crc_itu_t(E) ohci_hcd(E) ata_generic(E) sg(E) 
usbhid(E) hid(E) raid1(E) md_mod(E) ext4(E) crc16(E) mbcache(E) jbd2(E) 
fscrypto(E) k10temp(E)
[54997.668379]  tpm_tis(E) tpm_tis_core(E) tpm(E) rng_core(E) i2c_nforce2(E) 
asus_atk0110(E) nouveau(E) drm_kms_helper(E) ttm(E) drm(E) 
snd_hda_codec_hdmi(E) adt7475(E) hwmon_vid(E) f75375s(E) lm90(E) 
crc32c_generic(E) btrfs(E) xor(E) zstd_decompress(E) zstd_compress(E) xxhash(E) 
raid6_pq(E) ppp_async(E) ppp_generic(E) slhc(E) crc_ccitt(E) 
nf_conntrack_amanda(E) ts_kmp(E) nf_conntrack_ftp(E) nf_conntrack_h323(E) 
nf_conntrack_irc(E) nf_conntrack_netbios_ns(E) nf_conntrack_netlink(E) 
nfnetlink(E) nf_conntrack_pptp(E) nf_conntrack_proto_gre(E) 
nf_conntrack_sane(E) nf_conntrack_sip(E) nf_conntrack_snmp(E) 
nf_conntrack_broadcast(E) nf_conntrack_tftp(E) iptable_filter(E) 
iptable_mangle(E) iptable_nat(E) ip_tables(E) xt_limit(E) xt_LOG(E) 
xt_length(E) xt_state(E) xt_tcpudp(E) xt_DSCP(E) xt_REDIRECT(E) xt_mac(E)
[54997.668453]  xt_TCPMSS(E) ipt_MASQUERADE(E) nf_nat_ipv4(E) nf_nat(E) 
nf_conntrack(E) nf_defrag_ipv6(E) nf_defrag_ipv4(E) libcrc32c(E) ipt_REJECT(E) 
nf_reject_ipv4(E) lp(E) cpufreq_conservative(E) ppdev(E) parport_pc(E) 
parport(E) cpufreq_userspace(E) cpufreq_powersave(E) xt_multiport(E) 
x_tables(E) tun(E) ftdi_sio(E) usbserial(E) sd_mod(E) mxm_wmi(E) 
crc32c_intel(E) ahci(E) libahci(E) aesni_intel(E) aes_x86_64(E) crypto_simd(E) 
evdev(E) cryptd(E) glue_helper(E) libata(E) snd_hda_intel(E) scsi_mod(E) 
snd_hda_codec(E) i2c_i801(E) pcspkr(E) snd_hwdep(E) xhci_pci(E) ehci_pci(E) 
igb(E) snd_hda_core(E) xhci_hcd(E) dca(E) ehci_hcd(E) i2c_algo_bit(E) 
snd_pcm(E) thermal(E) fan(E) snd_timer(E) usbcore(E) usb_common(E) snd(E) 
e1000e(E) soundcore(E) video(E) wmi(E) button(E) [last unloaded: msr]
[54997.668547] CPU: 2 PID: 23138 Comm: btrfs-transacti Tainted: G            E  
   4.19.0-2-amd64 #1 Debian 4.19.16-1
[54997.668549] Hardware name: ASUS All Series/B85-PRO GAMER, BIOS 2203 
04/27/2015
[54997.668614] RIP: 0010:__btrfs_free_extent.isra.74+0x61e/0x940 [btrfs]
[54997.668618] Code: b8 00 00 00 48 8b 7c 24 08 e8 8e 15 ff ff 41 89 c5 58 c6 
44 24 2c 00 45 85 ed 0f 84 f2 fa ff ff 41 83 fd fe 0f 85 e1 fb ff ff <0f> 0b 49 
8b 3c 24 e8 87 32 00 00 49 89 d9 4d 89 f8 4c 89 f1 ff b4
[54997.668621] RSP: 0018:ffffafd08c207c00 EFLAGS: 00010246
[54997.668625] RAX: 00000000fffffffe RBX: 0000000000000001 RCX: 0000000000000000
[54997.668628] RDX: 00000000fffffffe RSI: 0000000000000000 RDI: 0000000000000000
[54997.668630] RBP: 000000a166e14000 R08: ffffafd08c207b8c R09: 0000000000000003
[54997.668633] R10: 0000000000000ce5 R11: 0000000000000000 R12: ffff89d0f8648620
[54997.668635] R13: 00000000fffffffe R14: 0000000000000000 R15: 0000000000000002
[54997.668639] FS:  0000000000000000(0000) GS:ffff89d0ff880000(0000) 
knlGS:0000000000000000
[54997.668642] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[54997.668645] CR2: 00007fbcb0ab6000 CR3: 000000019040a003 CR4: 00000000001606e0
[54997.668647] Call Trace:
[54997.668723]  ? btrfs_merge_delayed_refs+0x324/0x370 [btrfs]
[54997.668774]  __btrfs_run_delayed_refs+0x703/0xff0 [btrfs]
[54997.668826]  btrfs_run_delayed_refs+0x6a/0x180 [btrfs]
[54997.668879]  commit_cowonly_roots+0xf1/0x2f0 [btrfs]
[54997.668940]  ? btrfs_qgroup_account_extents+0xba/0x1d0 [btrfs]
[54997.668995]  btrfs_commit_transaction+0x310/0x870 [btrfs]
[54997.669052]  ? start_transaction+0x9b/0x3e0 [btrfs]
[54997.669106]  transaction_kthread+0x147/0x180 [btrfs]
[54997.669159]  ? btrfs_cleanup_transaction+0x520/0x520 [btrfs]
[54997.669166]  kthread+0x112/0x130
[54997.669171]  ? kthread_bind+0x30/0x30
[54997.669176]  ret_from_fork+0x35/0x40
[54997.669182] ---[ end trace 53bc38fba14fe6f5 ]---
[54997.669191] BTRFS info (device sdf): leaf 693983297536 gen 695646 total ptrs 
162 free space 5570 owner 2
[54997.669195]  item 0 key (693213642752 168 16384) itemoff 16232 itemsize 51
[54997.669198]          extent refs 1 gen 2420 flags 2
[54997.669201]          tree block key (558121 12 557316) level 0
[54997.669203]          ref#0: tree block backref root 1316
[54997.669209]  item 1 key (693213659136 168 16384) itemoff 16181 itemsize 51
[54997.669212]          extent refs 1 gen 1027 flags 258
[54997.669214]          tree block key (142075 12 572564) level 0
[54997.669216]          ref#0: tree block backref root 930
[54997.669221]  item 2 key (693213675520 169 0) itemoff 16148 itemsize 33
[54997.669223]          extent refs 1 gen 500238 flags 2
[54997.669225]          ref#0: tree block backref root 1815
[54997.669230]  item 3 key (693213691904 169 0) itemoff 16115 itemsize 33
[54997.669233]          extent refs 1 gen 616240 flags 2
[54997.669234]          ref#0: tree block backref root 2227
[54997.669239]  item 4 key (693213708288 169 0) itemoff 16082 itemsize 33
[54997.669242]          extent refs 1 gen 484318 flags 2
[54997.669243]          ref#0: tree block backref root 1745
[54997.669248]  item 5 key (693213724672 169 0) itemoff 16049 itemsize 33
[54997.669250]          extent refs 1 gen 458897 flags 2
[54997.669252]          ref#0: tree block backref root 930
[54997.669256]  item 6 key (693213741056 169 0) itemoff 16016 itemsize 33
[54997.669259]          extent refs 1 gen 458925 flags 2
[54997.669260]          ref#0: tree block backref root 930
[54997.669265]  item 7 key (693213757440 169 0) itemoff 15983 itemsize 33
[54997.669267]          extent refs 1 gen 11819 flags 2
[54997.669269]          ref#0: tree block backref root 2322
[54997.669274]  item 8 key (693213773824 169 0) itemoff 15950 itemsize 33
[54997.669276]          extent refs 1 gen 670314 flags 2
[54997.669278]          ref#0: tree block backref root 2582
[54997.669283]  item 9 key (693213790208 168 16384) itemoff 15899 itemsize 51
[54997.669285]          extent refs 1 gen 934 flags 2
[54997.669288]          tree block key (18446744073709551606 128 153578831872) 
level 0
[54997.669289]          ref#0: tree block backref root 7
[54997.669294]  item 10 key (693213806592 169 0) itemoff 15866 itemsize 33
[54997.669297]          extent refs 1 gen 15123 flags 258
[54997.669298]          ref#0: tree block backref root 2431
[54997.669303]  item 11 key (693213822976 169 0) itemoff 15833 itemsize 33
[54997.669306]          extent refs 1 gen 503307 flags 2
[54997.669307]          ref#0: tree block backref root 1832
[54997.669312]  item 12 key (693213839360 169 0) itemoff 15800 itemsize 33
[54997.669314]          extent refs 1 gen 446257 flags 2
[54997.669315]          ref#0: tree block backref root 928
[54997.669321]  item 13 key (693213855744 168 16384) itemoff 15749 itemsize 51
[54997.669323]          extent refs 1 gen 1027 flags 258
[54997.669326]          tree block key (142324 108 0) level 0
[54997.669327]          ref#0: tree block backref root 930
[54997.669332]  item 14 key (693213872128 169 0) itemoff 15716 itemsize 33
[54997.669334]          extent refs 1 gen 446308 flags 2
[54997.669336]          ref#0: tree block backref root 928
[54997.669341]  item 15 key (693213888512 169 0) itemoff 15683 itemsize 33
[54997.669343]          extent refs 1 gen 446128 flags 2
[54997.669344]          ref#0: tree block backref root 928
[54997.669348]  item 16 key (693213904896 169 0) itemoff 15650 itemsize 33
[54997.669351]          extent refs 1 gen 451992 flags 2
[54997.669352]          ref#0: tree block backref root 929
[54997.669356]  item 17 key (693213921280 169 0) itemoff 15617 itemsize 33
[54997.669358]          extent refs 1 gen 682362 flags 2
[54997.669359]          ref#0: tree block backref root 4370
[54997.669364]  item 18 key (693213937664 168 16384) itemoff 15566 itemsize 51
[54997.669367]          extent refs 1 gen 934 flags 2
[54997.669370]          tree block key (18446744073709551606 128 199630422016) 
level 0
[54997.669371]          ref#0: tree block backref root 7
[54997.669376]  item 19 key (693213954048 168 16384) itemoff 15515 itemsize 51
[54997.669378]          extent refs 1 gen 934 flags 2
[54997.669381]          tree block key (18446744073709551606 128 199745335296) 
level 0
[54997.669382]          ref#0: tree block backref root 7
[54997.669387]  item 20 key (693213970432 169 0) itemoff 15482 itemsize 33
[54997.669390]          extent refs 1 gen 446331 flags 2
[54997.669391]          ref#0: tree block backref root 928
[54997.669396]  item 21 key (693213986816 169 0) itemoff 15449 itemsize 33
[54997.669398]          extent refs 1 gen 446308 flags 2
[54997.669399]          ref#0: tree block backref root 928
[54997.669404]  item 22 key (693214003200 169 0) itemoff 15416 itemsize 33
[54997.669406]          extent refs 1 gen 446331 flags 2
[54997.669407]          ref#0: tree block backref root 928
[54997.669412]  item 23 key (693214019584 168 16384) itemoff 15365 itemsize 51
[54997.669414]          extent refs 1 gen 1028 flags 258
[54997.669417]          tree block key (83316 12 644420) level 0
[54997.669418]          ref#0: tree block backref root 930
[54997.669423]  item 24 key (693214035968 169 0) itemoff 15332 itemsize 33
[54997.669425]          extent refs 1 gen 440193 flags 2
[54997.669427]          ref#0: tree block backref root 927
[54997.669432]  item 25 key (693214052352 168 16384) itemoff 15281 itemsize 51
[54997.669434]          extent refs 1 gen 934 flags 258
[54997.669437]          tree block key (165768 1 0) level 0
[54997.669438]          ref#0: tree block backref root 926
[54997.669444]  item 26 key (693214068736 169 0) itemoff 15248 itemsize 33
[54997.669446]          extent refs 1 gen 460261 flags 2
[54997.669447]          ref#0: tree block backref root 930
[54997.669452]  item 27 key (693214085120 168 16384) itemoff 15197 itemsize 51
[54997.669455]          extent refs 1 gen 934 flags 258
[54997.669458]          tree block key (165839 1 0) level 0
[54997.669459]          ref#0: tree block backref root 926
[54997.669464]  item 28 key (693214101504 169 0) itemoff 15164 itemsize 33
[54997.669466]          extent refs 1 gen 673383 flags 2
[54997.669468]          ref#0: tree block backref root 3025
[54997.669473]  item 29 key (693214117888 168 16384) itemoff 15113 itemsize 51
[54997.669475]          extent refs 1 gen 934 flags 258
[54997.669478]          tree block key (165910 1 0) level 0
[54997.669479]          ref#0: tree block backref root 926
[54997.669484]  item 30 key (693214134272 169 0) itemoff 15080 itemsize 33
[54997.669487]          extent refs 1 gen 446331 flags 2
[54997.669488]          ref#0: tree block backref root 928
[54997.669493]  item 31 key (693214150656 169 0) itemoff 15047 itemsize 33
[54997.669495]          extent refs 1 gen 460180 flags 2
[54997.669497]          ref#0: tree block backref root 930
[54997.669501]  item 32 key (693214167040 169 0) itemoff 15014 itemsize 33
[54997.669503]          extent refs 1 gen 670314 flags 2
[54997.669504]          ref#0: tree block backref root 2582
[54997.669509]  item 33 key (693214183424 169 0) itemoff 14981 itemsize 33
[54997.669512]          extent refs 1 gen 442341 flags 2
[54997.669513]          ref#0: tree block backref root 928
[54997.669518]  item 34 key (693214199808 168 16384) itemoff 14930 itemsize 51
[54997.669520]          extent refs 1 gen 1027 flags 258
[54997.669523]          tree block key (142710 108 0) level 0
[54997.669524]          ref#0: tree block backref root 930
[54997.669529]  item 35 key (693214216192 168 16384) itemoff 14879 itemsize 51
[54997.669531]          extent refs 1 gen 934 flags 258
[54997.669534]          tree block key (166123 1 0) level 0
[54997.669535]          ref#0: tree block backref root 926
[54997.669541]  item 36 key (693214248960 168 16384) itemoff 14828 itemsize 51
[54997.669543]          extent refs 1 gen 934 flags 258
[54997.669546]          tree block key (166194 1 0) level 0
[54997.669547]          ref#0: tree block backref root 926
[54997.669552]  item 37 key (693214265344 169 0) itemoff 14795 itemsize 33
[54997.669554]          extent refs 1 gen 518122 flags 2
[54997.669556]          ref#0: tree block backref root 1832
[54997.669560]  item 38 key (693214281728 169 0) itemoff 14762 itemsize 33
[54997.669563]          extent refs 1 gen 503307 flags 2
[54997.669564]          ref#0: tree block backref root 1832
[54997.669569]  item 39 key (693214298112 169 0) itemoff 14729 itemsize 33
[54997.669571]          extent refs 1 gen 473429 flags 2
[54997.669572]          ref#0: tree block backref root 1686
[54997.669577]  item 40 key (693214314496 168 16384) itemoff 14678 itemsize 51
[54997.669580]          extent refs 1 gen 1027 flags 258
[54997.669582]          tree block key (142673 108 0) level 0
[54997.669584]          ref#0: tree block backref root 930
[54997.669588]  item 41 key (693214330880 169 0) itemoff 14645 itemsize 33
[54997.669590]          extent refs 1 gen 501511 flags 2
[54997.669592]          ref#0: tree block backref root 2
[54997.669597]  item 42 key (693214347264 168 16384) itemoff 14594 itemsize 51
[54997.669599]          extent refs 1 gen 1028 flags 2
[54997.669602]          tree block key (18446744073709551606 128 178998263808) 
level 0
[54997.669603]          ref#0: tree block backref root 7
[54997.669608]  item 43 key (693214363648 168 16384) itemoff 14543 itemsize 51
[54997.669610]          extent refs 1 gen 934 flags 258
[54997.669613]          tree block key (165147 12 637405) level 0
[54997.669614]          ref#0: tree block backref root 926
[54997.669620]  item 44 key (693214380032 168 16384) itemoff 14492 itemsize 51
[54997.669622]          extent refs 1 gen 934 flags 258
[54997.669625]          tree block key (165154 108 0) level 0
[54997.669626]          ref#0: tree block backref root 926
[54997.669631]  item 45 key (693214396416 169 0) itemoff 14459 itemsize 33
[54997.669634]          extent refs 1 gen 446257 flags 2
[54997.669635]          ref#0: tree block backref root 928
[54997.669640]  item 46 key (693214412800 169 0) itemoff 14426 itemsize 33
[54997.669642]          extent refs 1 gen 503307 flags 2
[54997.669644]          ref#0: tree block backref root 1832
[54997.669649]  item 47 key (693214429184 169 0) itemoff 14393 itemsize 33
[54997.669651]          extent refs 1 gen 446331 flags 2
[54997.669652]          ref#0: tree block backref root 928
[54997.669657]  item 48 key (693214445568 169 0) itemoff 14360 itemsize 33
[54997.669659]          extent refs 1 gen 446331 flags 2
[54997.669661]          ref#0: tree block backref root 928
[54997.669665]  item 49 key (693214461952 169 0) itemoff 14327 itemsize 33
[54997.669668]          extent refs 1 gen 446331 flags 2
[54997.669669]          ref#0: tree block backref root 928
[54997.669673]  item 50 key (693214478336 169 0) itemoff 14294 itemsize 33
[54997.669675]          extent refs 1 gen 440014 flags 2
[54997.669676]          ref#0: tree block backref root 927
[54997.669681]  item 51 key (693214494720 169 0) itemoff 14261 itemsize 33
[54997.669683]          extent refs 1 gen 451992 flags 2
[54997.669684]          ref#0: tree block backref root 929
[54997.669688]  item 52 key (693214511104 169 0) itemoff 14228 itemsize 33
[54997.669690]          extent refs 1 gen 468614 flags 2
[54997.669691]          ref#0: tree block backref root 1431
[54997.669696]  item 53 key (693214527488 169 0) itemoff 14195 itemsize 33
[54997.669699]          extent refs 1 gen 460261 flags 2
[54997.669700]          ref#0: tree block backref root 929
[54997.669705]  item 54 key (693214543872 168 16384) itemoff 14144 itemsize 51
[54997.669707]          extent refs 1 gen 934 flags 258
[54997.669710]          tree block key (165353 1 0) level 0
[54997.669711]          ref#0: tree block backref root 926
[54997.669716]  item 55 key (693214560256 168 16384) itemoff 14093 itemsize 51
[54997.669718]          extent refs 1 gen 934 flags 258
[54997.669721]          tree block key (165357 12 648746) level 0
[54997.669722]          ref#0: tree block backref root 926
[54997.669727]  item 56 key (693214576640 168 16384) itemoff 14042 itemsize 51
[54997.669730]          extent refs 1 gen 934 flags 258
[54997.669732]          tree block key (165360 1 0) level 0
[54997.669734]          ref#0: tree block backref root 926
[54997.669739]  item 57 key (693214593024 169 0) itemoff 14009 itemsize 33
[54997.669741]          extent refs 1 gen 574157 flags 2
[54997.669742]          ref#0: tree block backref root 2049
[54997.669748]  item 58 key (693214609408 169 0) itemoff 13976 itemsize 33
[54997.669750]          extent refs 1 gen 446331 flags 2
[54997.669751]          ref#0: tree block backref root 928
[54997.669756]  item 59 key (693214625792 169 0) itemoff 13943 itemsize 33
[54997.669758]          extent refs 1 gen 446331 flags 2
[54997.669759]          ref#0: tree block backref root 928
[54997.669764]  item 60 key (693214642176 169 0) itemoff 13910 itemsize 33
[54997.669766]          extent refs 1 gen 446331 flags 2
[54997.669767]          ref#0: tree block backref root 928
[54997.669772]  item 61 key (693214658560 169 0) itemoff 13877 itemsize 33
[54997.669774]          extent refs 1 gen 451992 flags 2
[54997.669775]          ref#0: tree block backref root 929
[54997.669779]  item 62 key (693214674944 169 0) itemoff 13844 itemsize 33
[54997.669781]          extent refs 1 gen 446331 flags 2
[54997.669783]          ref#0: tree block backref root 928
[54997.669787]  item 63 key (693214691328 169 0) itemoff 13811 itemsize 33
[54997.669789]          extent refs 1 gen 460534 flags 2
[54997.669790]          ref#0: tree block backref root 1371
[54997.669795]  item 64 key (693214707712 168 16384) itemoff 13760 itemsize 51
[54997.669797]          extent refs 1 gen 934 flags 258
[54997.669800]          tree block key (165466 108 0) level 0
[54997.669801]          ref#0: tree block backref root 926
[54997.669806]  item 65 key (693214724096 169 0) itemoff 13727 itemsize 33
[54997.669808]          extent refs 1 gen 446308 flags 2
[54997.669809]          ref#0: tree block backref root 928
[54997.669814]  item 66 key (693214740480 168 16384) itemoff 13676 itemsize 51
[54997.669816]          extent refs 1 gen 934 flags 258
[54997.669819]          tree block key (165515 12 638197) level 0
[54997.669820]          ref#0: tree block backref root 926
[54997.669826]  item 67 key (693214756864 168 16384) itemoff 13625 itemsize 51
[54997.669828]          extent refs 1 gen 934 flags 258
[54997.669831]          tree block key (165518 12 638197) level 0
[54997.669832]          ref#0: tree block backref root 926
[54997.669837]  item 68 key (693214773248 169 0) itemoff 13592 itemsize 33
[54997.669840]          extent refs 1 gen 434003 flags 2
[54997.669841]          ref#0: tree block backref root 926
[54997.669846]  item 69 key (693214789632 169 0) itemoff 13559 itemsize 33
[54997.669849]          extent refs 1 gen 446308 flags 2
[54997.669850]          ref#0: tree block backref root 928
[54997.669855]  item 70 key (693214806016 168 16384) itemoff 13508 itemsize 51
[54997.669857]          extent refs 1 gen 934 flags 258
[54997.669860]          tree block key (165702 1 0) level 0
[54997.669861]          ref#0: tree block backref root 926
[54997.669866]  item 71 key (693214822400 169 0) itemoff 13475 itemsize 33
[54997.669868]          extent refs 1 gen 440169 flags 2
[54997.669870]          ref#0: tree block backref root 927
[54997.669875]  item 72 key (693214838784 169 0) itemoff 13442 itemsize 33
[54997.669877]          extent refs 1 gen 562393 flags 2
[54997.669878]          ref#0: tree block backref root 1983
[54997.669883]  item 73 key (693214855168 168 16384) itemoff 13391 itemsize 51
[54997.669885]          extent refs 1 gen 934 flags 258
[54997.669888]          tree block key (165722 12 630940) level 0
[54997.669889]          ref#0: tree block backref root 926
[54997.669895]  item 74 key (693214871552 169 0) itemoff 13358 itemsize 33
[54997.669897]          extent refs 1 gen 446331 flags 2
[54997.669898]          ref#0: tree block backref root 928
[54997.669903]  item 75 key (693214887936 169 0) itemoff 13325 itemsize 33
[54997.669905]          extent refs 1 gen 464775 flags 2
[54997.669907]          ref#0: tree block backref root 1431
[54997.669912]  item 76 key (693214904320 169 0) itemoff 13292 itemsize 33
[54997.669914]          extent refs 1 gen 446308 flags 2
[54997.669915]          ref#0: tree block backref root 928
[54997.669920]  item 77 key (693214920704 168 16384) itemoff 13241 itemsize 51
[54997.669922]          extent refs 1 gen 934 flags 258
[54997.669925]          tree block key (165788 12 630940) level 0
[54997.669926]          ref#0: tree block backref root 926
[54997.669931]  item 78 key (693214937088 168 16384) itemoff 13190 itemsize 51
[54997.669934]          extent refs 1 gen 934 flags 258
[54997.669936]          tree block key (165790 12 630940) level 0
[54997.669938]          ref#0: tree block backref root 926
[54997.669942]  item 79 key (693214953472 168 16384) itemoff 13139 itemsize 51
[54997.669945]          extent refs 1 gen 934 flags 258
[54997.669947]          tree block key (165794 1 0) level 0
[54997.669949]          ref#0: tree block backref root 926
[54997.669954]  item 80 key (693214969856 168 16384) itemoff 13088 itemsize 51
[54997.669956]          extent refs 1 gen 934 flags 258
[54997.669959]          tree block key (165803 1 0) level 0
[54997.669960]          ref#0: tree block backref root 926
[54997.669965]  item 81 key (693214986240 169 0) itemoff 13055 itemsize 33
[54997.669968]          extent refs 1 gen 440193 flags 2
[54997.669969]          ref#0: tree block backref root 927
[54997.669974]  item 82 key (693215002624 169 0) itemoff 13022 itemsize 33
[54997.669976]          extent refs 1 gen 443976 flags 2
[54997.669978]          ref#0: tree block backref root 928
[54997.669983]  item 83 key (693215019008 168 16384) itemoff 12971 itemsize 51
[54997.669985]          extent refs 1 gen 934 flags 258
[54997.669988]          tree block key (165854 1 0) level 0
[54997.669989]          ref#0: tree block backref root 926
[54997.669994]  item 84 key (693215035392 168 16384) itemoff 12920 itemsize 51
[54997.669996]          extent refs 1 gen 934 flags 258
[54997.669999]          tree block key (165864 12 624554) level 0
[54997.670000]          ref#0: tree block backref root 926
[54997.670006]  item 85 key (693215051776 168 16384) itemoff 12869 itemsize 51
[54997.670008]          extent refs 1 gen 934 flags 258
[54997.670011]          tree block key (165871 12 624554) level 0
[54997.670012]          ref#0: tree block backref root 926
[54997.670017]  item 86 key (693215068160 168 16384) itemoff 12818 itemsize 51
[54997.670020]          extent refs 1 gen 934 flags 258
[54997.670022]          tree block key (165917 1 0) level 0
[54997.670023]          ref#0: tree block backref root 926
[54997.670028]  item 87 key (693215084544 168 16384) itemoff 12767 itemsize 51
[54997.670031]          extent refs 1 gen 934 flags 258
[54997.670033]          tree block key (165919 1 0) level 0
[54997.670035]          ref#0: tree block backref root 926
[54997.670040]  item 88 key (693215100928 168 16384) itemoff 12716 itemsize 51
[54997.670042]          extent refs 1 gen 934 flags 258
[54997.670045]          tree block key (165921 1 0) level 0
[54997.670046]          ref#0: tree block backref root 926
[54997.670051]  item 89 key (693215117312 168 16384) itemoff 12665 itemsize 51
[54997.670054]          extent refs 1 gen 934 flags 258
[54997.670056]          tree block key (165924 1 0) level 0
[54997.670057]          ref#0: tree block backref root 926
[54997.670063]  item 90 key (693215133696 169 0) itemoff 12632 itemsize 33
[54997.670065]          extent refs 1 gen 440169 flags 2
[54997.670066]          ref#0: tree block backref root 927
[54997.670071]  item 91 key (693215150080 169 0) itemoff 12599 itemsize 33
[54997.670074]          extent refs 1 gen 446257 flags 2
[54997.670075]          ref#0: tree block backref root 928
[54997.670080]  item 92 key (693215166464 168 16384) itemoff 12548 itemsize 51
[54997.670082]          extent refs 1 gen 934 flags 258
[54997.670085]          tree block key (165934 1 0) level 0
[54997.670086]          ref#0: tree block backref root 926
[54997.670092]  item 93 key (693215182848 168 16384) itemoff 12497 itemsize 51
[54997.670094]          extent refs 1 gen 934 flags 258
[54997.670097]          tree block key (165936 12 624554) level 0
[54997.670098]          ref#0: tree block backref root 926
[54997.670103]  item 94 key (693215199232 168 16384) itemoff 12446 itemsize 51
[54997.670105]          extent refs 1 gen 934 flags 258
[54997.670108]          tree block key (165939 1 0) level 0
[54997.670109]          ref#0: tree block backref root 926
[54997.670115]  item 95 key (693215215616 168 16384) itemoff 12395 itemsize 51
[54997.670117]          extent refs 1 gen 934 flags 258
[54997.670120]          tree block key (165985 12 624554) level 0
[54997.670121]          ref#0: tree block backref root 926
[54997.670126]  item 96 key (693215232000 168 16384) itemoff 12344 itemsize 51
[54997.670128]          extent refs 1 gen 934 flags 258
[54997.670131]          tree block key (165988 1 0) level 0
[54997.670132]          ref#0: tree block backref root 926
[54997.670137]  item 97 key (693215248384 168 16384) itemoff 12293 itemsize 51
[54997.670139]          extent refs 1 gen 934 flags 258
[54997.670142]          tree block key (165990 12 624554) level 0
[54997.670143]          ref#0: tree block backref root 926
[54997.670148]  item 98 key (693215264768 168 16384) itemoff 12242 itemsize 51
[54997.670150]          extent refs 1 gen 934 flags 258
[54997.670153]          tree block key (165993 12 624554) level 0
[54997.670154]          ref#0: tree block backref root 926
[54997.670159]  item 99 key (693215281152 168 16384) itemoff 12191 itemsize 51
[54997.670162]          extent refs 1 gen 934 flags 258
[54997.670164]          tree block key (165997 12 624554) level 0
[54997.670166]          ref#0: tree block backref root 926
[54997.670171]  item 100 key (693215297536 168 16384) itemoff 12140 itemsize 51
[54997.670173]          extent refs 1 gen 934 flags 258
[54997.670176]          tree block key (166000 12 624554) level 0
[54997.670177]          ref#0: tree block backref root 926
[54997.670182]  item 101 key (693215313920 168 16384) itemoff 12089 itemsize 51
[54997.670185]          extent refs 1 gen 934 flags 258
[54997.670187]          tree block key (166006 1 0) level 0
[54997.670189]          ref#0: tree block backref root 926
[54997.670194]  item 102 key (693215330304 168 16384) itemoff 12038 itemsize 51
[54997.670196]          extent refs 1 gen 934 flags 258
[54997.670199]          tree block key (166008 12 639669) level 0
[54997.670200]          ref#0: tree block backref root 926
[54997.670205]  item 103 key (693215346688 169 0) itemoff 12005 itemsize 33
[54997.670208]          extent refs 1 gen 503562 flags 2
[54997.670209]          ref#0: tree block backref root 1832
[54997.670214]  item 104 key (693215363072 169 0) itemoff 11972 itemsize 33
[54997.670217]          extent refs 1 gen 450550 flags 2
[54997.670218]          ref#0: tree block backref root 929
[54997.670223]  item 105 key (693215379456 169 0) itemoff 11939 itemsize 33
[54997.670225]          extent refs 1 gen 440169 flags 2
[54997.670227]          ref#0: tree block backref root 927
[54997.670232]  item 106 key (693215395840 168 16384) itemoff 11888 itemsize 51
[54997.670234]          extent refs 1 gen 934 flags 258
[54997.670237]          tree block key (166068 12 639669) level 0
[54997.670238]          ref#0: tree block backref root 926
[54997.670243]  item 107 key (693215412224 169 0) itemoff 11855 itemsize 33
[54997.670246]          extent refs 1 gen 441128 flags 2
[54997.670247]          ref#0: tree block backref root 926
[54997.670252]  item 108 key (693215428608 168 16384) itemoff 11804 itemsize 51
[54997.670254]          extent refs 1 gen 934 flags 258
[54997.670257]          tree block key (166198 12 643996) level 0
[54997.670258]          ref#0: tree block backref root 926
[54997.670263]  item 109 key (693215444992 168 16384) itemoff 11753 itemsize 51
[54997.670266]          extent refs 1 gen 934 flags 258
[54997.670269]          tree block key (166219 1 0) level 0
[54997.670270]          ref#0: tree block backref root 926
[54997.670275]  item 110 key (693215461376 168 16384) itemoff 11702 itemsize 51
[54997.670277]          extent refs 1 gen 934 flags 258
[54997.670280]          tree block key (166269 12 643996) level 0
[54997.670281]          ref#0: tree block backref root 926
[54997.670286]  item 111 key (693215477760 168 16384) itemoff 11651 itemsize 51
[54997.670289]          extent refs 1 gen 934 flags 258
[54997.670291]          tree block key (166283 12 643996) level 0
[54997.670292]          ref#0: tree block backref root 926
[54997.670297]  item 112 key (693215494144 168 16384) itemoff 11600 itemsize 51
[54997.670300]          extent refs 1 gen 934 flags 258
[54997.670302]          tree block key (166291 1 0) level 0
[54997.670304]          ref#0: tree block backref root 926
[54997.670308]  item 113 key (693215510528 169 0) itemoff 11567 itemsize 33
[54997.670311]          extent refs 1 gen 440193 flags 2
[54997.670312]          ref#0: tree block backref root 927
[54997.670317]  item 114 key (693215526912 169 0) itemoff 11534 itemsize 33
[54997.670320]          extent refs 1 gen 528475 flags 2
[54997.670321]          ref#0: tree block backref root 1889
[54997.670326]  item 115 key (693215543296 169 0) itemoff 11501 itemsize 33
[54997.670328]          extent refs 1 gen 440193 flags 2
[54997.670330]          ref#0: tree block backref root 927
[54997.670335]  item 116 key (693215559680 169 0) itemoff 11468 itemsize 33
[54997.670337]          extent refs 1 gen 464775 flags 2
[54997.670339]          ref#0: tree block backref root 1431
[54997.670344]  item 117 key (693215576064 169 0) itemoff 11435 itemsize 33
[54997.670346]          extent refs 1 gen 446331 flags 2
[54997.670347]          ref#0: tree block backref root 928
[54997.670353]  item 118 key (693215592448 168 16384) itemoff 11384 itemsize 51
[54997.670355]          extent refs 1 gen 934 flags 2
[54997.670358]          tree block key (18446744073709551606 128 198671167488) 
level 0
[54997.670359]          ref#0: tree block backref root 7
[54997.670364]  item 119 key (693215608832 169 0) itemoff 11351 itemsize 33
[54997.670366]          extent refs 1 gen 686120 flags 2
[54997.670368]          ref#0: tree block backref root 5002
[54997.670373]  item 120 key (693215625216 169 0) itemoff 11318 itemsize 33
[54997.670375]          extent refs 1 gen 500238 flags 2
[54997.670376]          ref#0: tree block backref root 1815
[54997.670382]  item 121 key (693215641600 168 16384) itemoff 11267 itemsize 51
[54997.670384]          extent refs 1 gen 934 flags 2
[54997.670387]          tree block key (18446744073709551606 128 189007917056) 
level 0
[54997.670388]          ref#0: tree block backref root 7
[54997.670394]  item 122 key (693215657984 169 0) itemoff 11234 itemsize 33
[54997.670396]          extent refs 1 gen 446308 flags 2
[54997.670397]          ref#0: tree block backref root 928
[54997.670403]  item 123 key (693215674368 168 16384) itemoff 11183 itemsize 51
[54997.670405]          extent refs 1 gen 934 flags 258
[54997.670408]          tree block key (165777 1 0) level 0
[54997.670409]          ref#0: tree block backref root 926
[54997.670414]  item 124 key (693215690752 169 0) itemoff 11150 itemsize 33
[54997.670416]          extent refs 1 gen 668353 flags 2
[54997.670417]          ref#0: tree block backref root 2397
[54997.670423]  item 125 key (693215707136 169 0) itemoff 11117 itemsize 33
[54997.670425]          extent refs 1 gen 446331 flags 2
[54997.670426]          ref#0: tree block backref root 928
[54997.670431]  item 126 key (693215723520 168 16384) itemoff 11066 itemsize 51
[54997.670433]          extent refs 1 gen 934 flags 258
[54997.670436]          tree block key (166127 1 0) level 0
[54997.670437]          ref#0: tree block backref root 926
[54997.670442]  item 127 key (693215739904 168 16384) itemoff 11015 itemsize 51
[54997.670445]          extent refs 1 gen 1027 flags 258
[54997.670447]          tree block key (142949 108 0) level 0
[54997.670449]          ref#0: tree block backref root 930
[54997.670454]  item 128 key (693215756288 168 16384) itemoff 10964 itemsize 51
[54997.670456]          extent refs 1 gen 934 flags 258
[54997.670458]          tree block key (166269 12 643996) level 0
[54997.670460]          ref#0: tree block backref root 926
[54997.670465]  item 129 key (693215789056 168 16384) itemoff 10913 itemsize 51
[54997.670467]          extent refs 1 gen 934 flags 2
[54997.670470]          tree block key (18446744073709551606 128 156268421120) 
level 0
[54997.670471]          ref#0: tree block backref root 7
[54997.670477]  item 130 key (693215805440 168 16384) itemoff 10862 itemsize 51
[54997.670479]          extent refs 1 gen 1027 flags 258
[54997.670482]          tree block key (142925 1 0) level 0
[54997.670483]          ref#0: tree block backref root 930
[54997.670488]  item 131 key (693215821824 169 0) itemoff 10829 itemsize 33
[54997.670490]          extent refs 1 gen 446308 flags 2
[54997.670491]          ref#0: tree block backref root 928
[54997.670497]  item 132 key (693215838208 168 16384) itemoff 10778 itemsize 51
[54997.670499]          extent refs 1 gen 934 flags 258
[54997.670502]          tree block key (166603 1 0) level 0
[54997.670503]          ref#0: tree block backref root 926
[54997.670508]  item 133 key (693215854592 169 0) itemoff 10745 itemsize 33
[54997.670510]          extent refs 1 gen 6267 flags 258
[54997.670511]          ref#0: tree block backref root 1889
[54997.670516]  item 134 key (693215870976 168 16384) itemoff 10694 itemsize 51
[54997.670519]          extent refs 1 gen 1027 flags 258
[54997.670521]          tree block key (142847 12 645819) level 0
[54997.670523]          ref#0: tree block backref root 930
[54997.670528]  item 135 key (693215887360 168 16384) itemoff 10643 itemsize 51
[54997.670530]          extent refs 1 gen 934 flags 258
[54997.670533]          tree block key (166674 1 0) level 0
[54997.670534]          ref#0: tree block backref root 926
[54997.670539]  item 136 key (693215903744 169 0) itemoff 10610 itemsize 33
[54997.670541]          extent refs 1 gen 451992 flags 2
[54997.670543]          ref#0: tree block backref root 929
[54997.670548]  item 137 key (693215920128 169 0) itemoff 10577 itemsize 33
[54997.670550]          extent refs 1 gen 496426 flags 2
[54997.670551]          ref#0: tree block backref root 1806
[54997.670556]  item 138 key (693215936512 168 16384) itemoff 10526 itemsize 51
[54997.670558]          extent refs 1 gen 1027 flags 258
[54997.670561]          tree block key (142360 108 0) level 0
[54997.670562]          ref#0: tree block backref root 930
[54997.670567]  item 139 key (693215952896 168 16384) itemoff 10475 itemsize 51
[54997.670570]          extent refs 1 gen 1027 flags 258
[54997.670572]          tree block key (142378 108 0) level 0
[54997.670574]          ref#0: tree block backref root 930
[54997.670579]  item 140 key (693215969280 168 16384) itemoff 10424 itemsize 51
[54997.670581]          extent refs 1 gen 1027 flags 258
[54997.670584]          tree block key (142390 12 624549) level 0
[54997.670585]          ref#0: tree block backref root 930
[54997.670590]  item 141 key (693215985664 169 0) itemoff 10391 itemsize 33
[54997.670593]          extent refs 1 gen 440193 flags 2
[54997.670594]          ref#0: tree block backref root 927
[54997.670599]  item 142 key (693216002048 169 0) itemoff 10358 itemsize 33
[54997.670602]          extent refs 1 gen 440193 flags 2
[54997.670603]          ref#0: tree block backref root 927
[54997.670608]  item 143 key (693216018432 169 0) itemoff 10325 itemsize 33
[54997.670610]          extent refs 1 gen 167898 flags 2
[54997.670612]          ref#0: tree block backref root 1248
[54997.670617]  item 144 key (693216034816 168 16384) itemoff 10274 itemsize 51
[54997.670619]          extent refs 1 gen 1027 flags 258
[54997.670622]          tree block key (142390 108 4096) level 0
[54997.670623]          ref#0: tree block backref root 930
[54997.670628]  item 145 key (693216051200 169 0) itemoff 10241 itemsize 33
[54997.670631]          extent refs 1 gen 642878 flags 2
[54997.670632]          ref#0: tree block backref root 2322
[54997.670637]  item 146 key (693216067584 168 16384) itemoff 10190 itemsize 51
[54997.670639]          extent refs 1 gen 1027 flags 258
[54997.670642]          tree block key (142427 108 0) level 0
[54997.670643]          ref#0: tree block backref root 930
[54997.670648]  item 147 key (693216083968 169 0) itemoff 10157 itemsize 33
[54997.670650]          extent refs 1 gen 451992 flags 2
[54997.670652]          ref#0: tree block backref root 929
[54997.670657]  item 148 key (693216100352 168 16384) itemoff 10106 itemsize 51
[54997.670659]          extent refs 1 gen 1027 flags 258
[54997.670662]          tree block key (142432 108 0) level 0
[54997.670663]          ref#0: tree block backref root 930
[54997.670668]  item 149 key (693216116736 168 16384) itemoff 10055 itemsize 51
[54997.670670]          extent refs 1 gen 1027 flags 258
[54997.670673]          tree block key (142479 108 0) level 0
[54997.670674]          ref#0: tree block backref root 930
[54997.670679]  item 150 key (693216133120 168 16384) itemoff 10004 itemsize 51
[54997.670682]          extent refs 1 gen 1027 flags 258
[54997.670684]          tree block key (142486 1 0) level 0
[54997.670686]          ref#0: tree block backref root 930
[54997.670691]  item 151 key (693216149504 168 16384) itemoff 9953 itemsize 51
[54997.670693]          extent refs 1 gen 1027 flags 258
[54997.670696]          tree block key (142502 1 0) level 0
[54997.670697]          ref#0: tree block backref root 930
[54997.670702]  item 152 key (693216165888 168 16384) itemoff 9902 itemsize 51
[54997.670705]          extent refs 1 gen 1027 flags 258
[54997.670707]          tree block key (142559 12 624549) level 0
[54997.670709]          ref#0: tree block backref root 930
[54997.670714]  item 153 key (693216182272 169 0) itemoff 9869 itemsize 33
[54997.670716]          extent refs 1 gen 677480 flags 2
[54997.670717]          ref#0: tree block backref root 3270
[54997.670722]  item 154 key (693216198656 169 0) itemoff 9836 itemsize 33
[54997.670725]          extent refs 1 gen 605346 flags 2
[54997.670726]          ref#0: tree block backref root 2179
[54997.670731]  item 155 key (693216215040 169 0) itemoff 9803 itemsize 33
[54997.670733]          extent refs 1 gen 503284 flags 2
[54997.670734]          ref#0: tree block backref root 1832
[54997.670740]  item 156 key (693216231424 169 0) itemoff 9770 itemsize 33
[54997.670742]          extent refs 1 gen 673941 flags 2
[54997.670743]          ref#0: tree block backref root 3086
[54997.670748]  item 157 key (693216247808 169 0) itemoff 9737 itemsize 33
[54997.670751]          extent refs 1 gen 115429 flags 2
[54997.670752]          ref#0: tree block backref root 1323
[54997.670757]  item 158 key (693216264192 168 16384) itemoff 9686 itemsize 51
[54997.670759]          extent refs 1 gen 1027 flags 258
[54997.670762]          tree block key (142806 12 645819) level 0
[54997.670764]          ref#0: tree block backref root 930
[54997.670769]  item 159 key (693216280576 169 0) itemoff 9653 itemsize 33
[54997.670772]          extent refs 1 gen 484345 flags 2
[54997.670773]          ref#0: tree block backref root 1745
[54997.670778]  item 160 key (693216296960 169 0) itemoff 9620 itemsize 33
[54997.670781]          extent refs 18 gen 30362 flags 2
[54997.670782]          ref#0: tree block backref root 256
[54997.670787]  item 161 key (693216296960 176 5077) itemoff 9620 itemsize 0
[54997.670788]          tree block backref
[54997.670794] BTRFS error (device sdf): unable to find ref byte nr 
693215772672 parent 0 root 2  owner 1 offset 0
[54997.670795] ------------[ cut here ]------------
[54997.670797] BTRFS: Transaction aborted (error -2)
[54997.670888] WARNING: CPU: 2 PID: 23138 at fs/btrfs/extent-tree.c:6801 
__btrfs_free_extent.isra.74+0x67b/0x940 [btrfs]
[54997.670889] Modules linked in: xt_mark(E) cls_fw(E) sch_sfq(E) sch_htb(E) 
nfnetlink_queue(E) nfnetlink_log(E) bluetooth(E) xt_conntrack(E) drbg(E) 
ansi_cprng(E) ecdh_generic(E) nf_log_ipv4(E) nf_log_common(E) intel_rapl(E) 
x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) kvm_intel(E) kvm(E) 
iTCO_wdt(E) irqbypass(E) iTCO_vendor_support(E) crct10dif_pclmul(E) 
crc32_pclmul(E) ghash_clmulni_intel(E) intel_cstate(E) eeepc_wmi(E) 
intel_uncore(E) asus_wmi(E) sparse_keymap(E) rfkill(E) serio_raw(E) 
intel_rapl_perf(E) wmi_bmof(E) i915(E) mei_me(E) mei(E) lpc_ich(E) 
pcc_cpufreq(E) fuse(E) autofs4(E) forcedeth(E) pata_amd(E) sky2(E) 
firewire_ohci(E) firewire_core(E) crc_itu_t(E) ohci_hcd(E) ata_generic(E) sg(E) 
usbhid(E) hid(E) raid1(E) md_mod(E) ext4(E) crc16(E) mbcache(E) jbd2(E) 
fscrypto(E) k10temp(E)
[54997.670972]  tpm_tis(E) tpm_tis_core(E) tpm(E) rng_core(E) i2c_nforce2(E) 
asus_atk0110(E) nouveau(E) drm_kms_helper(E) ttm(E) drm(E) 
snd_hda_codec_hdmi(E) adt7475(E) hwmon_vid(E) f75375s(E) lm90(E) 
crc32c_generic(E) btrfs(E) xor(E) zstd_decompress(E) zstd_compress(E) xxhash(E) 
raid6_pq(E) ppp_async(E) ppp_generic(E) slhc(E) crc_ccitt(E) 
nf_conntrack_amanda(E) ts_kmp(E) nf_conntrack_ftp(E) nf_conntrack_h323(E) 
nf_conntrack_irc(E) nf_conntrack_netbios_ns(E) nf_conntrack_netlink(E) 
nfnetlink(E) nf_conntrack_pptp(E) nf_conntrack_proto_gre(E) 
nf_conntrack_sane(E) nf_conntrack_sip(E) nf_conntrack_snmp(E) 
nf_conntrack_broadcast(E) nf_conntrack_tftp(E) iptable_filter(E) 
iptable_mangle(E) iptable_nat(E) ip_tables(E) xt_limit(E) xt_LOG(E) 
xt_length(E) xt_state(E) xt_tcpudp(E) xt_DSCP(E) xt_REDIRECT(E) xt_mac(E)
[54997.671042]  xt_TCPMSS(E) ipt_MASQUERADE(E) nf_nat_ipv4(E) nf_nat(E) 
nf_conntrack(E) nf_defrag_ipv6(E) nf_defrag_ipv4(E) libcrc32c(E) ipt_REJECT(E) 
nf_reject_ipv4(E) lp(E) cpufreq_conservative(E) ppdev(E) parport_pc(E) 
parport(E) cpufreq_userspace(E) cpufreq_powersave(E) xt_multiport(E) 
x_tables(E) tun(E) ftdi_sio(E) usbserial(E) sd_mod(E) mxm_wmi(E) 
crc32c_intel(E) ahci(E) libahci(E) aesni_intel(E) aes_x86_64(E) crypto_simd(E) 
evdev(E) cryptd(E) glue_helper(E) libata(E) snd_hda_intel(E) scsi_mod(E) 
snd_hda_codec(E) i2c_i801(E) pcspkr(E) snd_hwdep(E) xhci_pci(E) ehci_pci(E) 
igb(E) snd_hda_core(E) xhci_hcd(E) dca(E) ehci_hcd(E) i2c_algo_bit(E) 
snd_pcm(E) thermal(E) fan(E) snd_timer(E) usbcore(E) usb_common(E) snd(E) 
e1000e(E) soundcore(E) video(E) wmi(E) button(E) [last unloaded: msr]
[54997.671128] CPU: 2 PID: 23138 Comm: btrfs-transacti Tainted: G        W   E  
   4.19.0-2-amd64 #1 Debian 4.19.16-1
[54997.671130] Hardware name: ASUS All Series/B85-PRO GAMER, BIOS 2203 
04/27/2015
[54997.671180] RIP: 0010:__btrfs_free_extent.isra.74+0x67b/0x940 [btrfs]
[54997.671184] Code: 08 48 8b 40 50 f0 48 0f ba a8 08 17 00 00 02 0f 92 c0 5f 
84 c0 0f 85 31 12 09 00 44 89 ee 48 c7 c7 88 62 84 c0 e8 6f fa 8d c4 <0f> 0b e9 
1b 12 09 00 4c 89 e7 e8 e6 7a fe ff 48 8b 3c 24 4d 89 f8
[54997.671187] RSP: 0018:ffffafd08c207c00 EFLAGS: 00010286
[54997.671191] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000006
[54997.671193] RDX: 0000000000000007 RSI: 0000000000000092 RDI: ffff89d0ff8966a0
[54997.671196] RBP: 000000a166e14000 R08: 0000000000000ba0 R09: 0000000000000001
[54997.671198] R10: 0000000000000000 R11: 0000000000000001 R12: ffff89d0f8648620
[54997.671201] R13: 00000000fffffffe R14: 0000000000000000 R15: 0000000000000002
[54997.671205] FS:  0000000000000000(0000) GS:ffff89d0ff880000(0000) 
knlGS:0000000000000000
[54997.671207] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[54997.671210] CR2: 00007fbcb0ab6000 CR3: 000000019040a003 CR4: 00000000001606e0
[54997.671212] Call Trace:
[54997.671276]  ? btrfs_merge_delayed_refs+0x324/0x370 [btrfs]
[54997.671325]  __btrfs_run_delayed_refs+0x703/0xff0 [btrfs]
[54997.671376]  btrfs_run_delayed_refs+0x6a/0x180 [btrfs]
[54997.671430]  commit_cowonly_roots+0xf1/0x2f0 [btrfs]
[54997.671489]  ? btrfs_qgroup_account_extents+0xba/0x1d0 [btrfs]
[54997.671541]  btrfs_commit_transaction+0x310/0x870 [btrfs]
[54997.671595]  ? start_transaction+0x9b/0x3e0 [btrfs]
[54997.671647]  transaction_kthread+0x147/0x180 [btrfs]
[54997.671700]  ? btrfs_cleanup_transaction+0x520/0x520 [btrfs]
[54997.671706]  kthread+0x112/0x130
[54997.671710]  ? kthread_bind+0x30/0x30
[54997.671715]  ret_from_fork+0x35/0x40
[54997.671720] ---[ end trace 53bc38fba14fe6f6 ]---
[54997.671766] BTRFS: error (device sdf) in __btrfs_free_extent:6801: errno=-2 
No such entry
[54997.671767] BTRFS info (device sdf): forced readonly
[54997.671769] BTRFS: error (device sdf) in btrfs_run_delayed_refs:2935: 
errno=-2 No such entry
[54997.671771] BTRFS warning (device sdf): Skipping commit of aborted 
transaction.
[54997.671772] BTRFS: error (device sdf) in cleanup_transaction:1846: errno=-2 
No such entry

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