Just now, I did following test :
1) mkfs.xfs -f /dev/sda1 (/dev/sda1 is a 120G scsi disk)
2) mount -t xfs /dev/sda1 /mnt/tmp
3£©cd /mnt/tmp
4) for((i=0;i<50;i++)); do dd if=/dev/sda1 of=/mnt/tmp/a$i bs=1024 count=30M;
done
when the disk full, I umount /mnt/tmp and run xfs_check /dev/sda1
I found many errors as following
bad sb magic # 0 in ag 28
bad sb version # 0 in ag 28
bad agf magic # 0 in ag 28
bad agf version # 0 in ag 28
bad agi magic # 0 in ag 28
bad agi version # 0 in ag 28
bad magic # 0x58465342 in btbno block 0/0
bad magic # 0x58465342 in btcnt block 0/0
bad magic # 0x58465342 in inobt block 0/0
agi unlinked bucket 0 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 1 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 2 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 3 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 4 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 5 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 6 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 7 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 8 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 9 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 10 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 11 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 12 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 13 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 14 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 15 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 16 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 17 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 18 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 19 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 20 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 21 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 22 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 23 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 24 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 25 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 26 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 27 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 28 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 29 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 30 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 31 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 32 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 33 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 34 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 35 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 36 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 37 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 38 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 39 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 40 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 41 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 42 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 43 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 44 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 45 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 46 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 47 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 48 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 49 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 50 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 51 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 52 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 53 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 54 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 55 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 56 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 57 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 58 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 59 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 60 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 61 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 62 is 0 in ag 28 (inode=469762048)
agi unlinked bucket 63 is 0 in ag 28 (inode=469762048)
bad sb magic # 0 in ag 29
bad sb version # 0 in ag 29
bad agf magic # 0 in ag 29
bad agf version # 0 in ag 29
bad agi magic # 0 in ag 29
bad agi version # 0 in ag 29
bad magic # 0x58465342 in btbno block 0/0
bad magic # 0x58465342 in btcnt block 0/0
bad magic # 0x58465342 in inobt block 0/0
agi unlinked bucket 0 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 1 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 2 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 3 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 4 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 5 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 6 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 7 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 8 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 9 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 10 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 11 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 12 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 13 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 14 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 15 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 16 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 17 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 18 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 19 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 20 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 21 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 22 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 23 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 24 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 25 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 26 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 27 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 28 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 29 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 30 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 31 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 32 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 33 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 34 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 35 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 36 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 37 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 38 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 39 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 40 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 41 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 42 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 43 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 44 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 45 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 46 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 47 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 48 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 49 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 50 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 51 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 52 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 53 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 54 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 55 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 56 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 57 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 58 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 59 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 60 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 61 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 62 is 0 in ag 29 (inode=486539264)
agi unlinked bucket 63 is 0 in ag 29 (inode=486539264)
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