kern/160410: smbfs hangs when transferring large files

Frank Haynes fhaynes at
Fri Sep 2 22:50:09 UTC 2011

>Number:         160410
>Category:       kern
>Synopsis:       smbfs hangs when transferring large files
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Sep 02 22:50:08 UTC 2011
>Originator:     Frank Haynes
>Release:        8.2-RELEASE
FreeBSD tester 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Fri Feb 18 02:24:46 UTC 2011     root at  i386

I have several NTFS partitions mounted with smbfs. When transferring large amounts of data to them (such as with rsync) the connection hangs. When this happens, it is not possible to unmount the partition. The only solution is to reboot. This has been a problem for several years. Please consider fixing it.

Mount remote NTFS partitions with mount_smbfs. Transfer large amounts of data to and from those mounted partitions using rsync. Mount will hang and require a system reboot to clear. When this happens, the mounted partition is still accessible from other machines.


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