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[Solved] HELP! very slow disk eject and now no backups  



Thats the best way i can describe my problem.

A week or two ago i was VPN over to somewhere with an RDP session open. i have 2 disks mounted into a external mount connected via USB-C, through a CalDigit TS2 (which also has network, screens, keyboard & mouse connected through).  First disk a HDD backing up via time machine (and still running after 3 hours).   The other was an SSD which i clone my internal SSD to using CCC.

In a rush to finish i didnt disconnect VPN / RDP but did click eject on the disks a few times.  I dont think they properly finished and i pulled the USB-C cable.

Starting up for the first time i saw the VPN notice & closed the RDP screens and closed the disk warnings.   since then neither TM or CCC will backup.   CCC just says check your disks and TM takes its usual 1 hour or so to check everything then just stops.

I had a few connection and browser hanging and disk interaction issues so i restarted, reset SMC & ran a full ONYX clean.  All seemed to work again except, I can see in Disk Utility the disks are connected and i can try to eject them but nothing happens.


if i goto terminal and list the disks i can see them and this runs fast.


si-mbp:~ simoncranmer$ mount
/dev/disk1s1 on / (apfs, local, journaled)
devfs on /dev (devfs, local, nobrowse)
/dev/disk1s4 on /private/var/vm (apfs, local, noexec, journaled, noatime, nobrowse)
/dev/disk1s5 on /Volumes/data1 (apfs, local, journaled)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)
/dev/disk2s2 on /Volumes/2020tm 1 (hfs, local, nodev, nosuid, journaled)
[email protected]/dev/disk1s5 on /Volumes/ (apfs, local, read-only, journaled, nobrowse)
[email protected]/dev/disk1s1 on /Volumes/ (apfs, local, read-only, journaled, nobrowse)
[email protected]/dev/disk1s5 on /Volumes/ (apfs, local, read-only, journaled, nobrowse)
[email protected]/dev/disk1s1 on /Volumes/ (apfs, local, read-only, journaled, nobrowse)


if i then pick the TM disk to check open files 

lsof "/Volumes/2020tm"

i get a reply of nothing there but it takes 90 seconds.


if i now physically just eject the disk (button on the side of the mount), it can take a few minutes before the system will notice any change.   During this , going into Disk Utility shows the disk as still mounted.


Any ideas?


PS sorry forgot to add i am still on  Mojave 10.14.6

This topic was modified 1 month ago by r_si
1 Answer

ok answer (i hope) was corrupt local backups.

I cleared the  Console -> system.log , plugged in the SSD and in started seeing lots of

Jul 10 14:52:21 si-mbp[1] ([54957]): Service exited due to SIGKILL | sent by mds[86]

Disk utility did not respond so i Quit the app. Then restarted it. i had spinning "Loading disks" for 1 minute. Disk Utility then showed the External bus but an offline disk.  I checked the .log file again to find lots more

Jul 10 14:54:05 si-mbp[1] ([55057]): Service exited due to SIGKILL | sent by mds[86]

before a

Jul 10 14:54:06 si-mbp[1] ( Service only ran for 2 seconds. Pushing respawn out by 8 seconds.


So,   I went to time machine turned off auto backups and deleted all of the disks and went to dinner.   30 mins later everything was removed from



Plugged back in the disk back in, time machine instantly wanted to add the backup back into its known list & CCC seems to be happy.