On 10/6/20 4:29 PM, Graham Perrin wrote:
lsof finds no open file.
Please be wary of lsof. I'm not sure it works on OpenZFS. The port
reaches into /usr/src for zfs headers in locations that don't exist
anymore to access kernel memory in /dev/kmem using structs that are
different in OpenZFS. It is likely not building the ZFS support code on
13-current, and it is not expected to work on 12 with openzfs from
ports, either.
-Ryan
How else might I tell why the device is busy?
Mobile hard disk drive, USB.
--
root@momh167-gjp4-8570p:~ # zpool export Transcend
cannot unmount '/Volumes/t500': umount failed
root@momh167-gjp4-8570p:~ # lsof /Volumes/t500
root@momh167-gjp4-8570p:~ # zpool export Transcend
cannot unmount '/Volumes/t500': umount failed
root@momh167-gjp4-8570p:~ # zpool export Transcend
cannot unmount '/Volumes/t500': umount failed
root@momh167-gjp4-8570p:~ # umount /Volumes/t500/
umount: unmount of /Volumes/t500 failed: Device busy
root@momh167-gjp4-8570p:~ # lsof /Volumes/t500
root@momh167-gjp4-8570p:~ # zfs version
zfs-0.8.0-1
zfs-kmod-0.8.0-1
root@momh167-gjp4-8570p:~ # zpool iostat Transcend 3
capacity operations bandwidth
pool alloc free read write read write
---------- ----- ----- ----- ----- ----- -----
Transcend 126G 338G 0 0 3.29K 1.45K
Transcend 126G 338G 0 0 0 0
Transcend 126G 338G 0 0 0 0
Transcend 126G 338G 0 0 0 0
Transcend 126G 338G 0 0 0 0
Transcend 126G 338G 0 0 0 0
^C
root@momh167-gjp4-8570p:~ # umount /Volumes/t500/
umount: unmount of /Volumes/t500 failed: Device busy
root@momh167-gjp4-8570p:~ # ls -ahl /Volumes/t500
total 10
drwxr-xr-x 3 root wheel 3B Sep 2 19:02 .
drwxr-xr-x 4 root wheel 4B Sep 5 09:15 ..
drwxr-xr-x 6 grahamperrin grahamperrin 6B Sep 11 17:54 VirtualBox
root@momh167-gjp4-8570p:~ # zpool status Transcend
pool: Transcend
state: ONLINE
scan: scrub repaired 0B in 00:28:07 with 0 errors on Tue Oct 6
00:03:13 2020
config:
NAME STATE READ WRITE CKSUM
Transcend ONLINE 0 0 0
da0p1 ONLINE 0 0 0
errors: No known data errors
root@momh167-gjp4-8570p:~ # umount /Volumes/t500/
umount: unmount of /Volumes/t500 failed: Device busy
root@momh167-gjp4-8570p:~ # lsof /Volumes/t500
root@momh167-gjp4-8570p:~ # date ; uname -v
Tue Oct 6 21:20:17 BST 2020
FreeBSD 13.0-CURRENT #67 r366424: Sun Oct 4 19:54:32 BST 2020
root@momh167-gjp4-8570p:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG
root@momh167-gjp4-8570p:~ # ls /dev/da*
/dev/da0 /dev/da0p1
root@momh167-gjp4-8570p:~ # zfs get all Transcend Transcend/VirtualBox
NAME PROPERTY VALUE SOURCE
Transcend type filesystem -
Transcend creation Wed Sep 2 18:31 2020 -
Transcend used 126G -
Transcend available 324G -
Transcend referenced 126G -
Transcend compressratio 1.66x -
Transcend mounted yes -
Transcend quota none default
Transcend reservation none default
Transcend recordsize 128K default
Transcend mountpoint /Volumes/t500 local
Transcend sharenfs off default
Transcend checksum on default
Transcend compression zstd local
Transcend atime on default
Transcend devices on default
Transcend exec on default
Transcend setuid on default
Transcend readonly off default
Transcend jailed off default
Transcend snapdir hidden default
Transcend aclmode discard default
Transcend aclinherit restricted default
Transcend createtxg 1 -
Transcend canmount on default
Transcend xattr on default
Transcend copies 1 default
Transcend version 5 -
Transcend utf8only off -
Transcend normalization none -
Transcend casesensitivity sensitive -
Transcend vscan off default
Transcend nbmand off default
Transcend sharesmb off default
Transcend refquota none default
Transcend refreservation none default
Transcend guid 6806553549477274436 -
Transcend primarycache all default
Transcend secondarycache all default
Transcend usedbysnapshots 0B -
Transcend usedbydataset 126G -
Transcend usedbychildren 47.2M -
Transcend usedbyrefreservation 0B -
Transcend logbias latency default
Transcend objsetid 54 -
Transcend dedup off default
Transcend mlslabel none default
Transcend sync standard default
Transcend dnodesize legacy default
Transcend refcompressratio 1.66x -
Transcend written 126G -
Transcend logicalused 210G -
Transcend logicalreferenced 210G -
Transcend volmode default default
Transcend filesystem_limit none default
Transcend snapshot_limit none default
Transcend filesystem_count none default
Transcend snapshot_count none default
Transcend snapdev hidden default
Transcend context none default
Transcend fscontext none default
Transcend defcontext none default
Transcend rootcontext none default
Transcend relatime off default
Transcend redundant_metadata all default
Transcend overlay on default
Transcend encryption off default
Transcend keylocation none default
Transcend keyformat none default
Transcend pbkdf2iters 0 default
Transcend special_small_blocks 0
default
Transcend/VirtualBox type filesystem -
Transcend/VirtualBox creation Wed Sep 2 19:02 2020 -
Transcend/VirtualBox used 200K -
Transcend/VirtualBox available 324G -
Transcend/VirtualBox referenced 200K -
Transcend/VirtualBox compressratio 1.00x -
Transcend/VirtualBox mounted no -
Transcend/VirtualBox quota none default
Transcend/VirtualBox reservation none default
Transcend/VirtualBox recordsize 128K default
Transcend/VirtualBox mountpoint /Volumes/t500/VirtualBox inherited
from Transcend
Transcend/VirtualBox sharenfs off default
Transcend/VirtualBox checksum on default
Transcend/VirtualBox compression zstd inherited from Transcend
Transcend/VirtualBox atime off local
Transcend/VirtualBox devices on default
Transcend/VirtualBox exec on default
Transcend/VirtualBox setuid on default
Transcend/VirtualBox readonly off default
Transcend/VirtualBox jailed off default
Transcend/VirtualBox snapdir hidden default
Transcend/VirtualBox aclmode discard default
Transcend/VirtualBox aclinherit restricted default
Transcend/VirtualBox createtxg 375 -
Transcend/VirtualBox canmount on default
Transcend/VirtualBox xattr on default
Transcend/VirtualBox copies 1 default
Transcend/VirtualBox version 5 -
Transcend/VirtualBox utf8only off -
Transcend/VirtualBox normalization none -
Transcend/VirtualBox casesensitivity sensitive -
Transcend/VirtualBox vscan off default
Transcend/VirtualBox nbmand off default
Transcend/VirtualBox sharesmb off default
Transcend/VirtualBox refquota none default
Transcend/VirtualBox refreservation none default
Transcend/VirtualBox guid 11240822048258000557 -
Transcend/VirtualBox primarycache all default
Transcend/VirtualBox secondarycache all default
Transcend/VirtualBox usedbysnapshots 0B -
Transcend/VirtualBox usedbydataset 200K -
Transcend/VirtualBox usedbychildren 0B -
Transcend/VirtualBox usedbyrefreservation 0B -
Transcend/VirtualBox logbias latency default
Transcend/VirtualBox objsetid 76 -
Transcend/VirtualBox dedup off default
Transcend/VirtualBox mlslabel none default
Transcend/VirtualBox sync standard default
Transcend/VirtualBox dnodesize legacy default
Transcend/VirtualBox refcompressratio 1.00x -
Transcend/VirtualBox written 200K -
Transcend/VirtualBox logicalused 49.5K -
Transcend/VirtualBox logicalreferenced 49.5K -
Transcend/VirtualBox volmode default default
Transcend/VirtualBox filesystem_limit none default
Transcend/VirtualBox snapshot_limit none default
Transcend/VirtualBox filesystem_count none default
Transcend/VirtualBox snapshot_count none default
Transcend/VirtualBox snapdev hidden default
Transcend/VirtualBox context none default
Transcend/VirtualBox fscontext none default
Transcend/VirtualBox defcontext none default
Transcend/VirtualBox rootcontext none default
Transcend/VirtualBox relatime off default
Transcend/VirtualBox redundant_metadata all default
Transcend/VirtualBox overlay on default
Transcend/VirtualBox encryption aes-256-gcm -
Transcend/VirtualBox keylocation prompt local
Transcend/VirtualBox keyformat passphrase -
Transcend/VirtualBox pbkdf2iters 350000 -
Transcend/VirtualBox encryptionroot Transcend/VirtualBox -
Transcend/VirtualBox keystatus unavailable -
Transcend/VirtualBox special_small_blocks 0
default
root@momh167-gjp4-8570p:~ # zpool get all Transcend
NAME PROPERTY VALUE SOURCE
Transcend size 464G -
Transcend capacity 27% -
Transcend altroot - default
Transcend health ONLINE -
Transcend guid 8076233369858608335 -
Transcend version - default
Transcend bootfs - default
Transcend delegation on default
Transcend autoreplace off default
Transcend cachefile - default
Transcend failmode wait default
Transcend listsnapshots off default
Transcend autoexpand off default
Transcend dedupratio 1.00x -
Transcend free 338G -
Transcend allocated 126G -
Transcend readonly off -
Transcend ashift 0 default
Transcend comment - default
Transcend expandsize - -
Transcend freeing 0 -
Transcend fragmentation 12% -
Transcend leaked 0 -
Transcend multihost off default
Transcend checkpoint - -
Transcend load_guid 15610592478404149099 -
Transcend autotrim off default
Transcend feature@async_destroy enabled local
Transcend feature@empty_bpobj active local
Transcend feature@lz4_compress active local
Transcend feature@multi_vdev_crash_dump
enabled local
Transcend feature@spacemap_histogram active
local
Transcend feature@enabled_txg active local
Transcend feature@hole_birth active local
Transcend feature@extensible_dataset active
local
Transcend feature@embedded_data active local
Transcend feature@bookmarks enabled local
Transcend feature@filesystem_limits enabled local
Transcend feature@large_blocks enabled local
Transcend feature@large_dnode enabled local
Transcend feature@sha512 enabled local
Transcend feature@skein enabled local
Transcend feature@userobj_accounting active
local
Transcend feature@encryption active local
Transcend feature@project_quota active local
Transcend feature@device_removal enabled local
Transcend feature@obsolete_counts enabled local
Transcend feature@zpool_checkpoint enabled local
Transcend feature@spacemap_v2 active local
Transcend feature@allocation_classes enabled
local
Transcend feature@resilver_defer enabled local
Transcend feature@bookmark_v2 enabled local
Transcend feature@redaction_bookmarks enabled
local
Transcend feature@redacted_datasets enabled local
Transcend feature@bookmark_written enabled local
Transcend feature@log_spacemap active local
Transcend feature@livelist enabled local
Transcend feature@device_rebuild enabled local
Transcend feature@zstd_compress active local
root@momh167-gjp4-8570p:~ #
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