Wang Shilong
2014-Oct-10 13:35 UTC
Problems running Balance and checking integrity concurrently.
Hello， I have reproduced a problem with Btrfs integrity and balance using latest btrfs kernel,it is very easy to reproduce: With mount option “check_int”, and run xfstests/btrfs/ tests, below test could definitely reproduce problem: ./check tests/btrfs/014 5.122248] Written block @25800343552 (sdc/1210187776/0) found in hash table, M, bytenr mismatch (!= stored 20968505344). [ 455.122283] Written block @25800359936 (sdc/1210204160/1) found in hash table, M, bytenr mismatch (!= stored 20968521728). [ 455.122301] Written block @25800376320 (sdc/1210220544/1) found in hash table, M, bytenr mismatch (!= stored 20968538112). [ 455.122347] Referenced block @25800343552 (sdc/1344405504/2) found in hash table, M, bytenr mismatch (!= stored 20968505344). [ 455.122427] Referenced block @25800359936 (sdc/1344421888/2) found in hash table, M, bytenr mismatch (!= stored 20968521728). [ 455.122853] Written block @25800376320 (sdc/1344438272/0) found in hash table, M, bytenr mismatch (!= stored 20968538112). [ 455.126275] BTRFS critical (device sdc): unable to find logical 3452043264 len 4096 [ 455.126491] btrfsic: btrfsic_map_block(root @3452043264) failed! [ 455.126496] BTRFS critical (device sdc): unable to find logical 3452059648 len 4096 [ 455.126769] btrfsic: btrfsic_map_block(root @3452059648) failed! [ 455.126773] BTRFS critical (device sdc): unable to find logical 3452076032 len 4096 [ 455.127007] btrfsic: btrfsic_map_block(root @3452076032) failed! [ 455.127011] BTRFS critical (device sdc): unable to find logical 3452092416 len 4096 <snip> [ 455.129864] btrfsic: btrfsic_map_block(root @3452272640) failed! [ 455.129869] BTRFS critical (device sdc): unable to find logical 3452289024 len 4096 [ 455.130113] btrfsic: btrfsic_map_block(root @3452289024) failed! [ 455.130756] BTRFS critical (device sdc): unable to find logical 3451994112 len 4096 [ 455.130984] btrfsic: btrfsic_map_block(root @3451994112) failed! [ 455.130988] BTRFS critical (device sdc): unable to find logical 3452010496 len 4096 [ 455.131192] btrfsic: btrfsic_map_block(root @3452010496) failed! [ 455.131195] BTRFS critical (device sdc): unable to find logical 3452026880 len 4096 [ 455.131401] btrfsic: btrfsic_map_block(root @3452026880) failed! [ 455.131914] Written block @25800392704 (sdc/1210236928/0) found in hash table, M, bytenr mismatch (!= stored 20968554496). [ 455.131938] Referenced block @25800409088 (sdc/1210253312/1) found in hash table, M, bytenr mismatch (!= stored 20968570880). [ 455.131971] Referenced block @25800409088 (sdc/1344471040/2) found in hash table, M, bytenr mismatch (!= stored 20968570880). [ 455.132017] Referenced block @25800425472 (sdc/1210269696/1) found in hash table, M, bytenr mismatch (!= stored 20968587264). [ 455.132030] Referenced block @25800425472 (sdc/1344487424/2) found in hash table, M, bytenr mismatch (!= stored 20968587264). [ 455.132344] Written block @25800392704 (sdc/1344454656/0) found in hash table, M, bytenr mismatch (!= stored 20968554496 I supposed there are some race problems between integrity check and Btrfs balance, could you guys please take a look at this issue! Best Regards, Wang Shilong -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html