On 05/05/2021 01:59, Mark Millard via freebsd-current wrote:
I had a:

# zfs list -tall
NAME                                       USED  AVAIL     REFER  MOUNTPOINT
. . .
zroot/DESTDIRs/13_0R-CA72-instwrld-norm              1.44G   117G       96K  
/usr/obj/DESTDIRs/13_0R-CA72-instwrld-norm
zroot/DESTDIRs/13_0R-CA72-instwrld-norm@dirty-style  1.44G      -     1.44G  -. 
. .
. . .

(copied/pasted from somewhat earlier) and then attempted:

# zfs rename zroot/DESTDIRs/13_0R-CA72-instwrld-norm 
zroot/DESTDIRs/13_0R-CA72-instwrld-alt-0
cannot open 'zroot/DESTDIRs/13_0R-CA72-instwrld-norm@dirty-style': snapshot 
delimiter '@' is not expected here

Despite the "cannot open" message, the result looks like:

# zfs list -tall
NAME                                                       USED  AVAIL     
REFER  MOUNTPOINT
. . .
zroot/DESTDIRs/13_0R-CA72-instwrld-alt-0                  1.44G   114G       
96K  /usr/obj/DESTDIRs/13_0R-CA72-instwrld-alt-0
zroot/DESTDIRs/13_0R-CA72-instwrld-alt-0@dirty-style      1.44G      -     
1.44G  -
. . .

Still, it leaves me wondering if everything is okay
given that internal attempt to use the old name with
@dirty-style when it was apparently no longer
available under that naming.

For reference:

# uname -apKU
FreeBSD CA72_4c8G_ZFS 13.0-RELEASE FreeBSD 13.0-RELEASE #0 
releng/13.0-n244733-ea31abc261ff-dirty: Thu Apr 29 21:53:20 PDT 2021     
root@CA72_4c8G_ZFS:/usr/obj/BUILDs/13_0R-CA72-nodbg-clang/usr/13_0R-src/arm64.aarch64/sys/GENERIC-NODBG-CA72
  arm64 aarch64 1300139 1300139

Cannot reproduce here (but with much simpler names and on stable/13):
zfs create testz/test
zfs snapshot testz/test@snap1
zfs rename testz/test testz/test2

All worked.

--
Andriy Gapon
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