A long time ago, Pedro Martelletto wrote:

Alexander, can you please try to build a test-case that rules out NFS,
if at all possible?

I ran into this just this week while moving stuff like crazy. Succeeded to boil stuff down to a very limited set of operations that fscks things up. I run tests on a (disposable :) vnd device but I got the same results on an ordinary partition (wd0n).

Upgraded to snapshot from Nov 25 to make sure this wasn't fixed since I noticed some changes but no better luck there.

Maybe you, or anyone else, can do somthing of it. "Fails like a charm" every time for me.

/Alexander

----
$ dd if=/dev/zero of=msdos_fs bs=1024 count=1024
1024+0 records in
1024+0 records out
1048576 bytes transferred in 0.014 secs (70148247 bytes/sec)
$ sudo vnconfig vnd0 msdos_fs
$ sudo newfs_msdos /dev/rvnd0c
/dev/rvnd0c: 2008 sectors in 251 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=2048 mid=0xf0 spf=1 spt=63 hds=1 hid=0
$ sudo mount_msdos -m 777 -l /dev/vnd0c /mnt/test/
$ cd /mnt/test
$ mkdir a aa ab
$ find .
.
./a
./aa
./ab
$ mv aa ab a
$ find .
.
./a
./a/aa
$ ll a
total 16
drwxrwxrwx  1 root  wheel  4096 Nov 26 00:52 aa/
drwxrwxrwx  1 root  wheel  4096 Nov 26 00:52 ab/
$ find -L .
.
./a
./a/aa
./a/ab

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