On Sat, Mar 28, 2020 at 5:40 PM carlos ortega <carlosortega0113z@xxxxxxxxx> wrote: > dmesg > [ 0.000000] DMI: innotek GmbH VirtualBox/VirtualBox, BIOS It's a lot more complicated to figure out what went wrong, because there are multiple layers between Btrfs and the hardware in this case. > [ 24.426496] BTRFS: device label parrot-home devid 1 transid 10086 > /dev/mapper/parrot--vg-home > [ 24.426790] BTRFS: device label parrot-opt devid 1 transid 69 > /dev/mapper/parrot--vg-opt Also, this Btrfs is on top of device-mapper (dm-crypt or LVM? or both?) so it's more layers. That's not to say it shouldn't work and be safe. It's just a lot harder to figure out what went wrong. > [ 39.141310] BTRFS info (device dm-2): setting nodatacow, compression disabled > [ 39.141313] BTRFS info (device dm-2): use zlib compression, level 3 > [ 39.141314] BTRFS info (device dm-2): turning on discard > [ 39.141315] BTRFS info (device dm-2): disk space caching is enabled > [ 39.141316] BTRFS info (device dm-2): has skinny extents > [ 39.353529] BTRFS info (device dm-3): setting nodatacow, compression disabled > [ 39.353532] BTRFS info (device dm-3): use zlib compression, level 3 > [ 39.353534] BTRFS info (device dm-3): turning on discard > [ 39.353535] BTRFS info (device dm-3): disk space caching is enabled > [ 39.353536] BTRFS info (device dm-3): has skinny extents > [ 39.841262] BTRFS info (device dm-3): checking UUID tree Can you post the /etc/fstab for this file system? There are conflicting mount options, nodatacow means no compression. Also, the discard mount option can complicate things if discards end up being out of order from other commits. > [ 39.842514] BTRFS error (device dm-3): parent transid verify failed > on 37978112 wanted 10077 found 10086 > [ 39.859415] BTRFS error (device dm-3): parent transid verify failed > on 37978112 wanted 10077 found 10086 It wants a transid that's older than what it has. That's definitely not normal. What do you get for: # btrfs insp dump-s /dev/dm-3 5.4.19 is current but has this file system ever been written to by kernel 5.2.0-5.2.14? > [ 39.859968] ------------[ cut here ]------------ > [ 39.860007] WARNING: CPU: 0 PID: 727 at fs/btrfs/extent-tree.c:3071 > __btrfs_free_extent.isra.0+0x6a0/0x980 [btrfs] > [ 39.860008] Modules linked in: joydev(E) pktcdvd(E) > snd_intel8x0(E+) snd_ac97_codec(E) ac97_bus(E) snd_pcm(E) snd_timer(E) > snd(E) soundcore(E) sg(E) evdev(E) serio_raw(E) ac(E) pcspkr(E) > edac_mce_amd(E) parport_pc(E) ppdev(E) lp(E) parport(E) ip_tables(E) > x_tables(E) autofs4(E) dm_crypt(E) dm_mod(E) raid10(E) raid456(E) > async_raid6_recov(E) async_memcpy(E) async_pq(E) async_xor(E) > async_tx(E) raid1(E) raid0(E) multipath(E) linear(E) md_mod(E) xfs(E) > btrfs(E) xor(E) zstd_decompress(E) zstd_compress(E) raid6_pq(E) > libcrc32c(E) ext4(E) crc16(E) mbcache(E) jbd2(E) crc32c_generic(E) > nls_ascii(E) hid_generic(E) usbhid(E) hid(E) crct10dif_pclmul(E) > crc32_pclmul(E) crc32c_intel(E) sr_mod(E) cdrom(E) sd_mod(E) > ghash_clmulni_intel(E) ata_generic(E) xhci_pci(E) vmwgfx(E) > xhci_hcd(E) ttm(E) ata_piix(E) aesni_intel(E) libata(E) crypto_simd(E) > drm_kms_helper(E) cryptd(E) e1000(E) glue_helper(E) usbcore(E) > psmouse(E) usb_common(E) i2c_piix4(E) drm(E) scsi_mod(E) video(E) > button(E) > [ 39.860036] CPU: 0 PID: 727 Comm: mount Tainted: G E > 5.4.0-4parrot1-amd64 #1 Parrot 5.4.19-4parrot1 > [ 39.860037] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS > VirtualBox 12/01/2006 > [ 39.860051] RIP: 0010:__btrfs_free_extent.isra.0+0x6a0/0x980 [btrfs] > [ 39.860053] Code: ff ff 48 8b 3c 24 4d 89 f0 4c 89 e9 48 c7 44 24 > 48 00 00 00 00 48 89 ea 4c 89 e6 e8 9a b4 ff ff 41 89 c7 e9 8e fb ff > ff 0f 0b <0f> 0b 49 8b 3c 24 e8 65 5a 00 00 49 89 d9 4d 89 f0 4c 89 e9 > ff b4 > [ 39.860054] RSP: 0018:ffffae6f40427938 EFLAGS: 00010246 > [ 39.860055] RAX: 00000000fffffffe RBX: 0000000000000000 RCX: 0000000000000002 > [ 39.860055] RDX: 00000000fffffffe RSI: 0000000000000000 RDI: 0000000000000000 > [ 39.860056] RBP: 0000000001504000 R08: 0000000000000000 R09: 0000000000000000 > [ 39.860057] R10: 0000000000000002 R11: 0000000000000000 R12: ffff890aca4801c0 > [ 39.860057] R13: 0000000000000000 R14: 0000000000000003 R15: 00000000fffffffe > [ 39.860058] FS: 00007fc7f83b6c80(0000) GS:ffff890ad9a00000(0000) > knlGS:0000000000000000 > [ 39.860059] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 39.860059] CR2: 000055a574d179d8 CR3: 000000019772a000 CR4: 00000000000406f0 > [ 39.860063] Call Trace: > [ 39.860099] ? btrfs_merge_delayed_refs+0x31a/0x370 [btrfs] > [ 39.860114] __btrfs_run_delayed_refs+0x749/0xf90 [btrfs] > [ 39.860119] ? kmem_cache_alloc+0x159/0x210 > [ 39.860132] btrfs_run_delayed_refs+0x72/0x190 [btrfs] > [ 39.860165] btrfs_commit_transaction+0x54/0x9a0 [btrfs] > [ 39.860201] ? start_transaction+0x95/0x480 [btrfs] > [ 39.860216] close_ctree+0x29d/0x2f0 [btrfs] > [ 39.860230] btrfs_mount_root+0x66c/0x690 [btrfs] > [ 39.860233] ? __lookup_constant+0x46/0x60 > [ 39.860234] legacy_get_tree+0x27/0x40 > [ 39.860237] vfs_get_tree+0x25/0xb0 > [ 39.860238] fc_mount+0xe/0x30 > [ 39.860240] vfs_kern_mount.part.0+0x71/0x90 > [ 39.860253] btrfs_mount+0x155/0x8a0 [btrfs] > [ 39.860256] ? filename_lookup+0xf1/0x170 > [ 39.860258] ? tomoyo_init_request_info+0x86/0x90 > [ 39.860259] ? tomoyo_mount_permission+0x3e/0x1c0 > [ 39.860260] ? __lookup_constant+0x46/0x60 > [ 39.860262] ? legacy_get_tree+0x27/0x40 > [ 39.860263] legacy_get_tree+0x27/0x40 > [ 39.860264] vfs_get_tree+0x25/0xb0 > [ 39.860266] do_mount+0x770/0x980 > [ 39.860267] ksys_mount+0x7e/0xc0 > [ 39.860269] __x64_sys_mount+0x21/0x30 > [ 39.860271] do_syscall_64+0x52/0x160 > [ 39.860273] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > [ 39.860275] RIP: 0033:0x7fc7f825acda > [ 39.860277] Code: 48 8b 0d b9 e1 0b 00 f7 d8 64 89 01 48 83 c8 ff > c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 > 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 86 e1 0b 00 f7 d8 64 89 > 01 48 > [ 39.860278] RSP: 002b:00007fffe3040f48 EFLAGS: 00000246 ORIG_RAX: > 00000000000000a5 > [ 39.860289] RAX: ffffffffffffffda RBX: 00005633fb563a00 RCX: 00007fc7f825acda > [ 39.860290] RDX: 00005633fb563c10 RSI: 00005633fb563cf0 RDI: 00005633fb563c30 > [ 39.860298] RBP: 00007fc7f83b0204 R08: 00005633fb563c80 R09: 00007fc7f829b4c0 > [ 39.860299] R10: 0000000000000c00 R11: 0000000000000246 R12: 0000000000000000 > [ 39.860299] R13: 0000000000000c00 R14: 00005633fb563c30 R15: 00005633fb563c10 > [ 39.860301] ---[ end trace 2155c25bb5f33a74 ]--- > [ 39.860304] BTRFS info (device dm-3): leaf 30605312 gen 10087 total > ptrs 8 free space 15846 owner 2 > [ 39.860305] item 0 key (22020096 169 0) itemoff 16250 itemsize 33 > [ 39.860306] extent refs 1 gen 10087 flags 2 > [ 39.860306] ref#0: tree block backref root 3 > [ 39.860307] item 1 key (22020096 192 8388608) itemoff 16226 itemsize 24 > [ 39.860308] block group used 0 chunk_objectid 256 flags 34 > [ 39.860309] item 2 key (30408704 192 268435456) itemoff 16202 itemsize 24 > [ 39.860310] block group used 65536 chunk_objectid 256 flags 36 > [ 39.860311] item 3 key (30441472 169 0) itemoff 16169 itemsize 33 > [ 39.860312] extent refs 1 gen 10079 flags 2 > [ 39.860312] ref#0: tree block backref root 18446744073709551607 > [ 39.860313] item 4 key (30457856 169 0) itemoff 16136 itemsize 33 > [ 39.860314] extent refs 1 gen 10086 flags 2 > [ 39.860314] ref#0: tree block backref root 7 > [ 39.860315] item 5 key (30474240 169 0) itemoff 16103 itemsize 33 > [ 39.860316] extent refs 1 gen 10086 flags 2 > [ 39.860316] ref#0: tree block backref root 2 > [ 39.860317] item 6 key (30490624 169 0) itemoff 16070 itemsize 33 > [ 39.860318] extent refs 1 gen 10086 flags 2 > [ 39.860318] ref#0: tree block backref root 1 > [ 39.860319] item 7 key (13183746048 192 1073741824) itemoff 16046 itemsize 24 > [ 39.860320] block group used 0 chunk_objectid 256 flags 1 > [ 39.860321] BTRFS error (device dm-3): unable to find ref byte nr > 22036480 parent 0 root 3 owner 0 offset 0 No idea. What's the complete output you get for 'btrfs check' on this file system (without --repair). -- Chris Murphy
