On Thu, 10 Jun 2010 11:44:09 -0400, Benny Halevy <bhalevy@xxxxxxxxxxx>
wrote:
On Jun. 04, 2010, 21:09 +0300, sfaibish <sfaibish@xxxxxxx> wrote:
Apply against 2.6.34-rc3 pnfs branch. For pNFS client submission. Only
touches
the block layout driver.
Sorin, I suggest you guys test this set with the linux-pnfs 2.6.35-rc2
tree
We already tested the patches and they work in our QA lab before we sent
the
patches. We also tested in our labs in France. We used F13 as the base.
against both the EMC and the spnfs-block server in the Ann Arbor
As I mentioned in the patch at this time the spnfs block server doesn't
support complex structures. After we get the pnfs client patches in the
git we will work to implement the complex volumes support in the spnfs
server. In principle the testing was done with EMC pnfs server and all
the cthon tests passed so this is what we would do at BAT anyways.
I have VM with the code so, if Bruce can have a VM client with the
patches we have the pnfs server of EMC in CITI lab.
Bakeathon
and resend.
Unfortunatelly, I will not be there and I am not sure if the new pNFS block
developer from CITI will be up to speed. I am busy with the next BAT
organization.
I admit I didn't review this thoroughly yet and hopefully we can find
some
time to do it together in Ann Arbor.
:(
Benny
This patch set implements support for the complex volumes structures
such
as
stripe of multiple volumes in a single metavolume and slice of
metavolumes
into
smaller metavolumes. The patch set is specific to pnfs blocklayout and
uses
simple rpc pipefs to generate messages that are passed to the userland
which is
using an daemon to discover all the devices in the message. The
userspace
daemon
patches will be sent in a separate patch set.
The patch set replaces the current single volume implementation of the
pnfs blocklayout
that has performance limitations and cannot support wide striped file
systems.
The wide stripe is imperious to the performance scalability both for
single and multiple
clients configurations. These patches address only the pnfs blocklayout
client. Similar
patches will be implemented for the pnfsd block layout served in the
second phase.
0001-pnfs-block-layout-add-simple-rpc-pipefs.patch
0002-pnfs-block-layout-remove-device-creation-or-remove-from-kernel.patch
0003-pnfs-block-layout-add-block-device-pipe-processing-based-on-simple-rpc.patch
Testing:
CONFIG_NFS_V4_1 set:
NFSv4.1/pNFS mounts:
Connectathon tests pass against Celerra/pNFS block layout server with
both
simple
volumes and complex volumes stripe on 4 volumes and using a slice of
half
of the
striped metavolume.
CONFIG_NFS_V4_1 not set:
NFSv4.0 mount passes Connectathon tests.
/Sorin
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Best Regards
Sorin Faibish
Corporate Distinguished Engineer
Network Storage Group
EMC²
where information lives
Phone: 508-435-1000 x 48545
Cellphone: 617-510-0422
Email : sfaibish@xxxxxxx
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