J. Bruce Fields:
> On Thu, Dec 30, 2010 at 11:16:44AM +0800, Mi Jinlong wrote:
>> Hi Bruce:
>>
>> J. Bruce Fields:
>>> On Mon, Nov 15, 2010 at 04:12:43PM +0800, Mi Jinlong wrote:
>>>> J. Bruce Fields:
>>>>> On Thu, Nov 11, 2010 at 06:03:40PM +0800, Mi Jinlong wrote:
>>>>>> At the latest kernel(2.6.37-rc1), server just initialize the forechannel
>>>>>> at init_forechannel_attrs, but don't reflect it to reply.
>>>>>>
>>>>>> After initialize the session success, we should copy the forechannel info
>>>>>> to nfsd4_create_session struct.
>>>>> Thanks!
>>>>>
>>>>> Is there a chance you could write a pynfs test for this?
>>>> Maybe the following one is OK.
>>> Yes, thanks very much. But could we use a larger MAX_SLOTS_PER_SESSION
>>> value, to increase the chances this test will make sense for any
>>> server?
>> Yes, but we can't use a huge value as 1000000 for that the test site
>> will allocate replay_cache for each fore_channel.maxrequests when get
>> the reply of CREATE_SESSION.
>
> pynfs should only allocate enough for the returned maxrequests, right?
Yes, it does like that. If server return a wrong maxrequests as 1000000,
it will allocate 1000000 replay_cache. So we should set a small one here.
>
>> If setting to 1000000 or more huger,
>> when the test case fail, the test site will eat many memory.
>>
>> So, we should set it less than 1000 and add an explain.
>>
>>> Also, this is a "reply", not a "replay", test, so move it a little
>>> later; how about the following?
>> Sorry for that, it's a typo. ^_^
>>
>> Maybe we should set the TOO_MANY_SLOTS less than 1000, after testing,
>> the patch is as following:
>>
>> Ps: delete the semicolon at the latest line.
>
> Whoops, I obviously don't do much python....
>
> --b.
>
>> >From 2f544fcef0eef7ac1d59bc428be3436ad7d1bbde Mon Sep 17 00:00:00 2001
>> From: Mi Jinlong <mijinlong@xxxxxxxxxxxxxx>
>> Date: Wed, 29 Dec 2010 16:06:30 +0800
>> Subject: [PATCH] SRVR: Can server return fore_channel maxreqs correctly
>>
>> SRVR: Can server return fore_channel maxreqs correctly
>>
>> When client set the fore_channel maxreqs larger than server's
>> NFSD_MAX_SLOTS_PER_SESSION at create_session, the fore_channel
>> maxreqs at the reply must less than NFSD_MAX_SLOTS_PER_SESSION.
>>
>> At 2.6.37-rc1, the NFSD_MAX_SLOTS_PER_SESSION is 160.
>>
>> Signed-off-by: Mi Jinlong <mijinlong@xxxxxxxxxxxxxx>
>> Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
>>
>> ---
>> nfs4.1/server41tests/st_create_session.py | 19 +++++++++++++++++++
>> 1 files changed, 19 insertions(+), 0 deletions(-)
>>
>> diff --git a/nfs4.1/server41tests/st_create_session.py b/nfs4.1/server41tests/st_create_session.py
>> index 5f425d4..5cfac14 100644
>> --- a/nfs4.1/server41tests/st_create_session.py
>> +++ b/nfs4.1/server41tests/st_create_session.py
>> @@ -363,3 +363,22 @@ def testCallbackVersion(t, env):
>> (cb_occurred.low, cb_occurred.hi, cb_occurred.vers))
>> finally:
>> env.c1._check_version = orig
>> +
>> +def testMaxreqs(t, env):
>> + """A CREATE_SESSION with maxreqs too large should return
>> + a modified value
>> +
>> + FLAGS: create_session all
>> + CODE: CSESS22
>> + """
>> + # Assuming this is too large for any server; increase if necessary:
>> + # but too huge will eat many memory for replay_cache, becareful it!
>> + TOO_MANY_SLOTS = 500
>> +
>> + c = env.c1.new_client(env.testname(t))
>> + # CREATE_SESSION with fore_channel = TOO_MANY_SLOTS
>> + chan_attrs = channel_attrs4(0,8192,8192,8192,128, TOO_MANY_SLOTS, [])
>> + sess1 = c.create_session(fore_attrs=chan_attrs)
>> + if nfs4lib.test_equal(sess1.fore_channel.maxrequests,
>> + chan_attrs.ca_maxrequests, "count4"):
>> + fail("Server allows surprisingly large fore_channel maxreqs")
>> --
>> 1.7.3.3
>>
>
--
----
thanks
Mi Jinlong
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