Hi,
I recently had an issue that SMB share volume hosted on a NetApp cluser cannot
be ejected. lsof shows nothing regarding this volume. I also did a packet trace
when reproducing this issue. However, there is no tree-disconnect (SMB command
to disconnect the share) in the trace. I suspect that something local that was
preventing the un-mount operation. I have an idea to trace the unmount(2)
system call see where the operation was blocked by looking at the stack trace
with the following dtrace one-liner:
bash-3.2# dtrace -n 'syscall::unmount:return {@[ustack(),pid,execname]=count()}'
dtrace: description 'syscall::unmount:return ' matched 1 probe
dtrace: error on enabled probe ID 1 (ID 469: syscall::unmount:return): invalid
user access in action #2
^C
bash-3.2#
As you can see, the one-liner doesn't work. I don't understand the error
message. How can I proceed for this issue?
Appreciate for any inputs!
Thank you!
Steve Zhou
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