Re: Read time tree block corruption detected

Hi Qu,

Please see below for the dump.

btrfs-progs v5.12.1
leaf 174113599488 items 18 free space 2008 generation 1330906 owner 363
leaf 174113599488 flags 0x1(WRITTEN) backref revision 1
fs uuid a7d327c4-8594-4116-a6f8-8aa2a4162063
chunk uuid f885f49e-14a0-4c80-9c12-c2302b9a0229
	item 0 key (5471 INODE_ITEM 0) itemoff 3835 itemsize 160
		generation 2063 transid 27726 size 40 nbytes 40
		block group 0 mode 100600 links 1 uid 0 gid 100 rdev 0
		sequence 1501 flags 0x0(none)
		atime 1386484844.468769570 (2013-12-08 14:40:44)
		ctime 1386484844.468769570 (2013-12-08 14:40:44)
		mtime 1386484844.468769570 (2013-12-08 14:40:44)
		otime 0.0 (1970-01-01 08:00:00)
	item 1 key (5471 INODE_REF 4399) itemoff 3824 itemsize 11
		index 12 namelen 1 name: 8
	item 2 key (5471 EXTENT_DATA 0) itemoff 3763 itemsize 61
		generation 27726 type 0 (inline)
		inline extent data size 40 ram_bytes 40 compression 0 (none)
	item 3 key (5645 INODE_ITEM 0) itemoff 3603 itemsize 160
		generation 2542 transid 61261 size 40 nbytes 40
		block group 0 mode 100600 links 1 uid 0 gid 100 rdev 0
		sequence 24769 flags 0x0(none)
		atime 1394335806.351857522 (2014-03-09 11:30:06)
		ctime 1394335827.344389955 (2014-03-09 11:30:27)
		mtime 1394335827.344389955 (2014-03-09 11:30:27)
		otime 0.0 (1970-01-01 08:00:00)
	item 4 key (5645 INODE_REF 4399) itemoff 3592 itemsize 11
		index 13 namelen 1 name: 7
	item 5 key (5645 EXTENT_DATA 0) itemoff 3531 itemsize 61
		generation 61261 type 0 (inline)
		inline extent data size 40 ram_bytes 40 compression 0 (none)
	item 6 key (7222 INODE_ITEM 0) itemoff 3371 itemsize 160
		generation 5754 transid 5767 size 307 nbytes 307
		block group 0 mode 100644 links 1 uid 0 gid 0 rdev 0
		sequence 7 flags 0x0(none)
		atime 1379834835.428558020 (2013-09-22 15:27:15)
		ctime 1379834835.428558020 (2013-09-22 15:27:15)
		mtime 1379834835.428558020 (2013-09-22 15:27:15)
		otime 0.0 (1970-01-01 08:00:00)
	item 7 key (7222 INODE_REF 287) itemoff 3344 itemsize 27
		index 6 namelen 17 name: dhcpcd-eth0.lease
	item 8 key (7222 EXTENT_DATA 0) itemoff 3016 itemsize 328
		generation 5767 type 0 (inline)
		inline extent data size 307 ram_bytes 307 compression 0 (none)
	item 9 key (7415 INODE_ITEM 0) itemoff 2856 itemsize 160
		generation 5904 transid 1330906 size 180 nbytes 0
		block group 0 mode 40755 links 2 uid 0 gid 0 rdev 0
		sequence 177 flags 0x0(none)
		atime 1483277713.141980592 (2017-01-01 21:35:13)
		ctime 1563162901.234656246 (2019-07-15 11:55:01)
		mtime 1406534032.158605559 (2014-07-28 15:53:52)
		otime 0.0 (1970-01-01 08:00:00)
	item 10 key (7415 INODE_REF 260) itemoff 2837 itemsize 19
		index 28 namelen 9 name: backlight
	item 11 key (7415 INODE_REF 286) itemoff 2818 itemsize 19
		index 3 namelen 9 name: backlight
	item 12 key (7415 DIR_ITEM 3128336373) itemoff 2746 itemsize 72
		location key (120417 INODE_ITEM 0) type FILE
		transid 117279 data_len 0 name_len 42
		name: pci-0000:00:02.0:backlight:intel_backlight
	item 13 key (7415 DIR_ITEM 3218198317) itemoff 2705 itemsize 41
		location key (7487 INODE_ITEM 0) type FILE
		transid 5992 data_len 0 name_len 11
		name: acpi_video0
	item 14 key (7415 DIR_ITEM 3582254411) itemoff 2638 itemsize 67
		location key (55325 INODE_ITEM 0) type FILE
		transid 63351 data_len 0 name_len 37
		name: platform-VPC2004:00:backlight:ideapad
	item 15 key (7415 DIR_INDEX 2) itemoff 2597 itemsize 41
		location key (7487 INODE_ITEM 0) type FILE
		transid 5992 data_len 0 name_len 11
		name: acpi_video0
	item 16 key (7415 DIR_INDEX 4) itemoff 2530 itemsize 67
		location key (55325 INODE_ITEM 0) type FILE
		transid 63351 data_len 0 name_len 37
		name: platform-VPC2004:00:backlight:ideapad
	item 17 key (7415 DIR_INDEX 5) itemoff 2458 itemsize 72
		location key (120417 INODE_ITEM 0) type FILE
		transid 117279 data_len 0 name_len 42
		name: pci-0000:00:02.0:backlight:intel_backlight


‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Saturday, July 17th, 2021 at 3:05 PM, Qu Wenruo [off-list ref] wrote:

On 2021/7/17 上午9:45, pepperpoint@mb.ardentcoding.com wrote:

quoted

Hello,

I see this message on dmesg:

[ 2452.256756] BTRFS critical (device dm-0): corrupt leaf: root=363 block=174113599488 slot=9 ino=7415, invalid nlink: has 2 expect no more than 1 for dir

[ 2452.256776] BTRFS error (device dm-0): block=174113599488 read time tree block corruption detected

Please provide the following dump:

btrfs ins dump-tree -b 174113599488 /dev/dm-0
=============================================

Thanks,

Qu

quoted

When I run btrfs scrub and btrfs check, no error was detected.

I am running Linux 5.12.15-arch1-1 and btrfs-progs v5.12.1

How should I fix this error?