rsync use with -tmsdosfs mounted file system? file has vanished: . . .

I used a sequence that looked like:

mount -onoatime -tmsdosfs /dev/gpt/CA72optM2efi /CA72optM2efi-media/ \
&& rsync -x --delete -aAUHhh --info=progress2 /boot/efi/ /CA72optM2efi-media/

that got:

file has vanished: "/CA72optM2efi-media/BCM271~5.DTB"
file has vanished: "/CA72optM2efi-media/BCM271~6.DTB"
         73.77K   0%    1.63MB/s    0:00:00 (xfr#7, to-chk=0/493)   rsync warning: some files vanished before they could be transferred (code 24) at main.c(1357) [sender=3.2.7]

After that, activity reported the likes of:

rsync: [generator] delete_file: unlink(overlays/VC4-KM~8.DTB) failed: Read-only file system (30)
and:
rsync: [receiver] mkstemp "/CA72optM2efi-media/.fixup4.dat.2Wonu9" failed: Read-only file system (30)

More than rsync was odd at that point:

# ls -Tld /CA72optM2efi-media/*.DTB
ls: /CA72optM2efi-media/BCM271~5.DTB: No such file or directory
ls: /CA72optM2efi-media/BCM271~6.DTB: No such file or directory

# rm /CA72optM2efi-media/*/*.DTB
override rwxr-xr-x root/wheel uarch for /CA72optM2efi-media/overlays/SDHOST~1.DTB? y
rm: /CA72optM2efi-media/overlays/SDHOST~1.DTB: Read-only file system
. . .

But:

# mount | grep media
/dev/gpt/CA72optM2efi on /CA72optM2efi-media (msdosfs, local, noatime)

So the mount itself was not the source of the read-only status so far.

I then tried:

# umount /CA72optM2efi-media
# newfs_msdos /dev/da0p1
# mount -onoatime -tmsdosfs /dev/gpt/CA72optM2efi /mnt
# cp -aRx /boot/efi/ /mnt/
cp: utimensat: /mnt: Invalid argument

(which is normal).

# umount /mnt

No more oddities , so far after that.


For reference:

# uname -apKU
FreeBSD CA72-16Gp-ZFS 14.0-CURRENT FreeBSD 14.0-CURRENT #99 main-n264171-2a0c0aea4209-dirty: Fri Jul 14 21:00:44 PDT 2023     root@CA72-16Gp-ZFS:/usr/obj/BUILDs/main-CA72-nodbg-clang/usr/main-src/arm64.aarch64/sys/GENERIC-NODBG-CA72 arm64 aarch64 1400093 1400093

# pkg info rsync
rsync-3.2.7
Name           : rsync
Version        : 3.2.7
Installed on   : Sat Jul 15 14:53:48 2023 PDT
Origin         : net/rsync
Architecture   : FreeBSD:14:aarch64
. . .
Annotations    :
FreeBSD_version: 1400092
build_timestamp: 2023-07-02T06:57:44+0000
built_by       : poudriere-git-3.3.99.20220831
cpe            : cpe:2.3:a:samba:rsync:3.2.7:::::freebsd14:aarch64
port_checkout_unclean: no
port_git_hash  : f45cd5bd9d4b
ports_top_checkout_unclean: yes
ports_top_git_hash: 880f72e54deb


===
Mark Millard
marklmi at yahoo.com