Hi,
just as a remark: we are using also a cluster filesystem together
with samba and nfs (StorNEXT). In the beginning we had some problem
with NFS (kernel panic), caused by the file locking.
However, we are using one SAMBA server for the home shares and
another for the group shares. Two addional nodes are exporting
everything using NFS.
Therefore we do not have a concurrent situation of two samba server
exporting the same stuff. For NFS it works! We have 6 NFS file server
working on the same file base. But I never tested what will happen, when
to samba server are starting to access the same file on different server.
My suggestion would be, it CAN work, if the GFS is correctly locking
the file, if one once write access to a file.
However, a cluster solution for samba would be MUCH better!
Bye,
Peer
Andrew Bartlett schrieb:
On Wed, 2006-09-27 at 17:20 +0200, sandra-llistes wrote:
Hello,
We have two Fedora 5 Servers clustered with GFS. We installed samba
and exported the same shares in both of them.
All went fine at first, with people accessing to theirs own files and
so, but for some programs (minitab, matlab, ...) people need to access
the same file at once. Then samba begins to fail and clients hang. In
order to fix samba is necessary to restart the service. We've tried to
put the shares in a filesystem without GFS and all goes well, people
can access the same file without problems simultaneously.
This certainly looks weird. If the files are only ever accessed from
one node, then it *should* work, but I don't know if this is something
that has been tested with GFS specifically.
Serious damage starts to happen when we have Samba accessing the same
files on both nodes, because all the state information isn't shared
between nodes. (Proposals for a scalable solution for Samba to do this
are due on samba-technical in the next week).
If you are only using one node for Samba, it should be the same as a
local non-cluster filesystem, so perhaps raise this with the GFS
developers.
Andrew Bartlett
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Mit freundlichem Gruss
Peer-Joachim Koch
_________________________________________________________
Max-Planck-Institut fuer Biogeochemie
Dr. Peer-Joachim Koch
Hans-Knöll Str.10 Telefon: ++49 3641 57-6705
D-07745 Jena Telefax: ++49 3641 57-7705
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