Re: [MooseFS-Users] rsync from moosfs chnages source file time stamps

[Valeri G. <ga...@ki...>]

On Fri, April 22, 2016 12:03 am, Jakub Kruszona-Zawadzki wrote:
>
> On 21 Apr, 2016, at 16:33, Valeri Galtsev <ga...@ki...>
> wrote:
>
>> Dear Experts,
>>
>> I have sort of weirdness I just stumbled over.
>>
>> I migrates some directories to moosefs (free opes source version,
>> standard
>> installation "by the book" on FreeBSD). At some point I decided to
>> migrate
>> the directory back to local (UFS) filesystem on the machine. Here is
>> weirdness I observe:
>>
>> after i run
>>
>> rsync -avu /path/do/mfs/mount/directory /path/to/local/fs
>>
>> I do get the content of directory on local filesystem as expected with
>> all
>> correct file attributes (user/group ownership, creation time, content).
>> However, the source files on moosefs change their time stamps, as if the
>> report last access time instead of creation time. They were reporting
>> correct creation times after they were rsync'ed from local filesystem to
>> moosefs originally. This basically renders rsync command useless (and
>> damaging if you care about file creation times) when you rsync from
>> moosefs (elsewhere).
>>
>> What am I doing wrong? I've used Linux and Unix for over decade an a
>> half,
>> ans used rsync over comparable period of time. What I hit with moosefs
>> gives me kind of shock, and I can't figure myself what could I be doing
>> wrong.
>>
>> Thanks in advance for all your advices.
>>
>> Valeri
>
> We have changed atime/mtime management in MooseFS recently (in version
> 3.0.74), so the question is which version of MooseFS do you use?
>
> It looks like a bug in MooseFS, so we need the version, because we have
> two options here.
> The bug was in previous atime/mtime mechanism (pre 3.0.74) or there is a
> bug in current mechanism.

It is open source

[valeri@felix ~]$ pkg info -a | grep moose
moosefs-cgi-2.0.88             MooseFS CGI interface
moosefs-cgiserv-2.0.88         MooseFS CGI webserver
moosefs-chunkserver-2.0.88     MooseFS data storage and synchronization
component
moosefs-cli-2.0.88             MooseFS command line interface
moosefs-client-2.0.88          MooseFS client tools
moosefs-master-2.0.88          Fault-tolerant distributed filesystem

on FreeBSD:

FreeBSD felix.uchicago.edu 9.3-RELEASE-p39 FreeBSD 9.3-RELEASE-p39 #0: Wed
Mar 16 16:29:56 UTC 2016    
ro...@am...:/usr/obj/usr/src/sys/GENERIC  amd64

Thanks.
Valeri


>
> --
>
>  \_\            /_/
>     \_\_    _/_/
>         \--/
>         /Oo\_--____
>        (__)        )
>         ``\    __  |
>            ||-~  `||
>            ||     ||
>            ""     ""
>
> Regards,
> Jakub Kruszona-Zawadzki
>


++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++