"text file busy" on cifs-mounted dir *doesn't* cause rsync error!

Jason Haar Jason.Haar at trimble.co.nz
Thu Oct 19 05:09:58 GMT 2006

I can confirm this doesn't happen with smbclient (it reports
nor with smbfs (it reports "Text file busy").

I'll file a bugzilla entry


Jason Haar wrote:
> Hi there
> I just reported a problem to the rsync list, and a minute later realised
> a further test I should have tried first.
> Basically it appears that "mount -t cifs" SMB shares under Linux don't
> properly report low-level rename failures.
> i.e. if I use rsync to overwrite a locked file  rsync think it succeeds
> as it:
> a: copies file to new temp file
> b: renames temp file over existing file.
> As the file is locked, b: should fail - but mount.cifs reports it as
> working! A further "ls -l" shows the file hasn't been overwritten.
> Is this a Samba bug - or a Windows one? If the latter, how are other
> rsync users working around this problem of trying to replicate data onto
> remote CIFS shares?
> This is Samba-2.0.23c under FC5
> Jason
> ---- original message to rsync list -------------
> I am running rsync-2.6.9rc2 and am having difficulty getting rsync to
> report an error when I think it should
> I mounted (via "mount -t cifs") a remote Win2K3 server and on a XP
> client opened a Word document. Then from Linux (FC5) I attempted a
> bash$ cp /tmp/other.txt file.doc
> cp: cannot create regular file `file.doc': Text file busy
> That makes sense - CIFS has the file locked.
> Then I tried copying the same file via rsync
> bash$ rsync /tmp/other.txt file.doc
> bash$ echo $?
> 0
> i.e. rsync says it worked! However it didn't. I ended up with a full
> copy of other.txt as .file.doc.3s1d3w - but the final rename on top of
> the original file failed.
> Rsync didn't return an error. It should?
> Help? Is this a bug with rsync, or with Samba (perhaps it returned OK on
> the rename when it shouldn't have?)


Jason Haar
Information Security Manager, Trimble Navigation Ltd.
Phone: +64 3 9635 377 Fax: +64 3 9635 417
PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1

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