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# This is on ext4, kernel 5.13.5 | |
$ rm foo ; echo hello > foo; SECONDS=0 ; while sleep 1 ; do echo -n "$SECONDS " ; filefrag -v foo | grep eof ; done | |
1 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
2 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
3 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
4 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
5 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
6 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
7 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
8 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
9 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
10 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
11 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
12 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
13 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
14 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
15 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
16 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
17 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
18 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
19 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
20 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
21 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
22 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
23 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
24 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
25 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
26 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
27 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
28 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
29 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
30 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
31 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
32 0: 0.. 0: 2130481.. 2130481: 1: last,eof | |
33 0: 0.. 0: 2130481.. 2130481: 1: last,eof | |
34 0: 0.. 0: 2130481.. 2130481: 1: last,eof | |
btrfs: | |
/mnt/btrfs.mnt$ rm foo ; echo hello > foo; SECONDS=0 ; while sleep 1 ; do echo -n "$SECONDS " ; filefrag -v foo | grep eof ; done | |
rm: cannot remove 'foo': No such file or directory | |
1 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
2 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
3 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
4 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
5 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
6 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
7 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
8 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
9 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
10 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
11 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
12 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
13 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
14 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
15 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
16 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
17 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
18 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
19 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
20 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
21 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
22 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
23 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
24 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
25 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
26 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
27 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
28 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
29 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
30 0: 0.. 0: 0.. 0: 1: last,unknown_loc,delalloc,eof | |
31 0: 0.. 4095: 0.. 4095: 4096: last,not_aligned,inline,eof | |
32 0: 0.. 4095: 0.. 4095: 4096: last,not_aligned,inline,eof | |
33 0: 0.. 4095: 0.. 4095: 4096: last,not_aligned,inline,eof | |
34 0: 0.. 4095: 0.. 4095: 4096: last,not_aligned,inline,eof | |
Overwrite by rename, ext4: | |
~/tmp$ touch foo ; echo hello > foo.tmp ; mv foo.tmp foo ; SECONDS=0 ; while true ; do echo -n "$SECONDS " ; filefrag -v foo | grep eof ; sleep 1 ; done | |
0 0: 0.. 0: 2130481.. 2130481: 1: last,unwritten,eof | |
1 0: 0.. 0: 2130481.. 2130481: 1: last,eof | |
2 0: 0.. 0: 2130481.. 2130481: 1: last,eof | |
3 0: 0.. 0: 2130481.. 2130481: 1: last,eof | |
Overwrite by rename, btrfs: | |
/mnt/btrfs.mnt$ touch foo ; echo hello > foo.tmp ; mv foo.tmp foo ; SECONDS=0 ; while true ; do echo -n "$SECONDS " ; filefrag -v foo | grep eof ; sleep 1 ; done | |
0 0: 0.. 4095: 0.. 4095: 4096: last,not_aligned,inline,eof | |
1 0: 0.. 4095: 0.. 4095: 4096: last,not_aligned,inline,eof |
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