Hey Qu.
On Wed, 2017-01-18 at 16:48 +0800, Qu Wenruo wrote: > To Christoph, > > Would you please try this patch, and to see if it suppress the block > group > warning? I did another round of fsck in both modes (original/lomem), first WITHOUT your patch, then WITH it... both on progs version 4.9... no further RW mount between these 4 runs: btrfs-progs v4.9 WITHOUT patch: ******************************* # btrfs check /dev/nbd0 ; echo $? checking extents checking free space cache checking fs roots checking csums checking root refs Checking filesystem on /dev/nbd0 UUID: 326d292d-f97b-43ca-b1e8-c722d3474719 found 7469206884352 bytes used err is 0 total csum bytes: 7281779252 total tree bytes: 10837262336 total fs tree bytes: 2011906048 total extent tree bytes: 1015349248 btree space waste bytes: 922444044 file data blocks allocated: 7458369622016 referenced 7579485159424 0 # btrfs check --mode=lowmem /dev/nbd0 ; echo $? checking extents ERROR: block group[74117545984 1073741824] used 1073741824 but extent items used 0 ERROR: block group[239473786880 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[500393050112 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[581997428736 1073741824] used 1073741824 but extent items used 0 ERROR: block group[626557714432 1073741824] used 1073741824 but extent items used 0 ERROR: block group[668433645568 1073741824] used 1073741824 but extent items used 0 ERROR: block group[948680261632 1073741824] used 1073741824 but extent items used 0 ERROR: block group[982503129088 1073741824] used 1073741824 but extent items used 0 ERROR: block group[1039411445760 1073741824] used 1073741824 but extent items used 0 ERROR: block group[1054443831296 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[1190809042944 1073741824] used 1073741824 but extent items used 0 ERROR: block group[1279392743424 1073741824] used 1073741824 but extent items used 0 ERROR: block group[1481256206336 1073741824] used 1073741824 but extent items used 0 ERROR: block group[1620842643456 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[1914511032320 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[3055361720320 1073741824] used 1073741824 but extent items used 0 ERROR: block group[3216422993920 1073741824] used 1073741824 but extent items used 0 ERROR: block group[3670615785472 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[3801612288000 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[3828455833600 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[4250973241344 1073741824] used 1073741824 but extent items used 0 ERROR: block group[4261710659584 1073741824] used 1073741824 but extent items used 1074266112 ERROR: block group[4392707162112 1073741824] used 1073741824 but extent items used 0 ERROR: block group[4558063403008 1073741824] used 1073741824 but extent items used 0 ERROR: block group[4607455526912 1073741824] used 1073741824 but extent items used 0 ERROR: block group[4635372814336 1073741824] used 1073741824 but extent items used 0 ERROR: block group[4640204652544 1073741824] used 1073741824 but extent items used 0 ERROR: block group[4642352136192 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[4681006841856 1073741824] used 1073741824 but extent items used 0 ERROR: block group[5063795802112 1073741824] used 1073741824 but extent items used 0 ERROR: block group[5171169984512 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[5216267141120 1073741824] used 1073741824 but extent items used 1207959552 ERROR: block group[5290355326976 1073741824] used 1073741824 but extent items used 0 ERROR: block group[5445511020544 1073741824] used 1073741824 but extent items used 1074266112 ERROR: block group[6084387405824 1073741824] used 1073741824 but extent items used 0 ERROR: block group[6104788500480 1073741824] used 1073741824 but extent items used 0 ERROR: block group[6878956355584 1073741824] used 1073741824 but extent items used 0 ERROR: block group[6997067956224 1073741824] used 1073741824 but extent items used 0 ERROR: block group[7702516334592 1073741824] used 1073741824 but extent items used 0 ERROR: block group[8051482427392 1073741824] used 1073741824 but extent items used 1084751872 ERROR: block group[8116980678656 1073741824] used 1073217536 but extent items used 0 ERROR: errors found in extent allocation tree or chunk allocation checking free space cache checking fs roots Checking filesystem on /dev/nbd0 UUID: 326d292d-f97b-43ca-b1e8-c722d3474719 found 7469206884352 bytes used err is -5 total csum bytes: 7281779252 total tree bytes: 10837262336 total fs tree bytes: 2011906048 total extent tree bytes: 1015349248 btree space waste bytes: 922444044 file data blocks allocated: 7458369622016 referenced 7579485159424 1 => so the problem still shows up when unpatched btrfs-progs v4.9 WITH patch: **************************** # btrfs check /dev/nbd0 ; echo $? checking extents checking free space cache checking fs roots checking csums checking root refs Checking filesystem on /dev/nbd0 UUID: 326d292d-f97b-43ca-b1e8-c722d3474719 found 7469206884352 bytes used err is 0 total csum bytes: 7281779252 total tree bytes: 10837262336 total fs tree bytes: 2011906048 total extent tree bytes: 1015349248 btree space waste bytes: 922444044 file data blocks allocated: 7458369622016 referenced 7579485159424 0 # btrfs check --mode=lowmem /dev/nbd0 ; echo $? checking extents checking free space cache checking fs roots Checking filesystem on /dev/nbd0 UUID: 326d292d-f97b-43ca-b1e8-c722d3474719 found 7469206884352 bytes used err is -5 total csum bytes: 7281779252 total tree bytes: 10837262336 total fs tree bytes: 2011906048 total extent tree bytes: 1015349248 btree space waste bytes: 922444044 file data blocks allocated: 7458369622016 referenced 7579485159424 1 => so the original mode output is identical, but while lowmem mode no longer prints so many errors there's now a: > found 7469206884352 bytes used err is -5 and exit code 1 Cheers, Chris.
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