Is the connectathon holey test failure going to be fixed before 2.6.18
is finalized?
This is from a 2.6.18-rc3 client:
test exclusive create.
test negative seek, you should get: read: Invalid argument
or lseek: Invalid argument
lseek: Invalid argument
test rename
test truncate
truncate succeeded
test holey file support
read (hole) offset 8192, sz = 56667, bytes = 5141 (ret -1), holesz = 9012
read: Input/output error
special tests failed
Tests failed, leaving /mnt/brahms mounted
[cel@picasso cthon04]$
--
"We who cut mere stones must always be envisioning cathedrals"
-- Quarry worker's creed
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Chuck Lever wrote:
> On 8/8/06, Trond Myklebust <[email protected]> wrote:
>
>>On Tue, 2006-08-08 at 15:20 -0400, Chuck Lever wrote:
>>
>>>Is the connectathon holey test failure going to be fixed before 2.6.18
>>>is finalized?
>>
>>Depends. Have you traced it in order to figure out what is wrong?
>
>
> Ah. Bruce reported this problem a while back, and said that it goes
> away if one of your recent patches to fs/nfs/read.c is reverted.
> Bruce?
Well the patch in question is:
commit 1de3fc12ea085690547a54b6efa01c7348f1cebd
tree ea865786120cfcefac563c54693fef8d3d718f10
parent 128e6ced247cda88f96fa9f2e4ba8b2c4a681560
author Trond Myklebust <[email protected]> Thu, 25 May 2006
09:40:44 -0400
committer Trond Myklebust <[email protected]> Fri, 09 Jun 2006
17:34:03 -0400
NFS: Clean up and fix page zeroing when we have short reads
The code that is supposed to zero the uninitialised partial pages when
the server returns a short read is currently broken: it looks at the
nfs_page wb_pgbase and wb_bytes fields instead of the equivalent
nfs_read_data values when deciding where to start truncating the page.
Also ensure that we are more careful about setting PG_uptodate
before retrying a short read: the retry will change the nfs_read_data
args.pgbase and args.count.
I'm looking into now... but this patch definitely breaks the holy
test...
steved.
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Steve-
For the record, you did mention to me at one point that you saw this
against Linux *and* Solaris NFS servers, right?
On 8/17/06, Steve Dickson <[email protected]> wrote:
>
>
> Chuck Lever wrote:
> > On 8/8/06, Trond Myklebust <[email protected]> wrote:
> >
> >>On Tue, 2006-08-08 at 15:20 -0400, Chuck Lever wrote:
> >>
> >>>Is the connectathon holey test failure going to be fixed before 2.6.18
> >>>is finalized?
> >>
> >>Depends. Have you traced it in order to figure out what is wrong?
> >
> >
> > Ah. Bruce reported this problem a while back, and said that it goes
> > away if one of your recent patches to fs/nfs/read.c is reverted.
> > Bruce?
> Well the patch in question is:
>
> commit 1de3fc12ea085690547a54b6efa01c7348f1cebd
> tree ea865786120cfcefac563c54693fef8d3d718f10
> parent 128e6ced247cda88f96fa9f2e4ba8b2c4a681560
> author Trond Myklebust <[email protected]> Thu, 25 May 2006
> 09:40:44 -0400
> committer Trond Myklebust <[email protected]> Fri, 09 Jun 2006
> 17:34:03 -0400
>
> NFS: Clean up and fix page zeroing when we have short reads
>
> The code that is supposed to zero the uninitialised partial pages when
> the server returns a short read is currently broken: it looks at the
> nfs_page wb_pgbase and wb_bytes fields instead of the equivalent
> nfs_read_data values when deciding where to start truncating the page.
>
> Also ensure that we are more careful about setting PG_uptodate
> before retrying a short read: the retry will change the nfs_read_data
> args.pgbase and args.count.
>
> I'm looking into now... but this patch definitely breaks the holy
> test...
>
> steved.
>
>
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>
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Chuck Lever wrote:
> Steve-
>
> For the record, you did mention to me at one point that you saw this
> against Linux *and* Solaris NFS servers, right?
This is true.... This failure happens against both flavors...
steved.
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On Thu, 2006-08-17 at 13:07 -0400, Steve Dickson wrote:
>
> Chuck Lever wrote:
> > Steve-
> >
> > For the record, you did mention to me at one point that you saw this
> > against Linux *and* Solaris NFS servers, right?
> This is true.... This failure happens against both flavors...
Could you send us an example of 'fsx' output that demonstrates the
problem?
Cheers,
Trond
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Trond Myklebust wrote:
>
> Could you send us an example of 'fsx' output that demonstrates the
> problem?
hmmm... fsx? What does the fsx have to do with the special tests of
the connectathon failing... I guess I'm missing something...
anyways... I'll try to run some fsx test runs asaic...
steved.
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On Thu, 2006-08-17 at 16:56 -0400, Steve Dickson wrote:
> Trond Myklebust wrote:
> >
> > Could you send us an example of 'fsx' output that demonstrates the
> > problem?
> hmmm... fsx? What does the fsx have to do with the special tests of
> the connectathon failing... I guess I'm missing something...
> anyways... I'll try to run some fsx test runs asaic...
fsx creates holes in files left, right and center, and then tests for
correctness. If there is a problem with the read patch, and hole
creation, then fsx should find it and provide you with a nice dump of
what went wrong, where, and what sequence of events lead up to the
problem.
Cheers,
Trond
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On Thu, Aug 17, 2006 at 06:37:31PM -0400, Trond Myklebust wrote:
> On Thu, 2006-08-17 at 16:56 -0400, Steve Dickson wrote:
> > Trond Myklebust wrote:
> > >
> > > Could you send us an example of 'fsx' output that demonstrates the
> > > problem?
> > hmmm... fsx? What does the fsx have to do with the special tests of
> > the connectathon failing... I guess I'm missing something...
> > anyways... I'll try to run some fsx test runs asaic...
>
> fsx creates holes in files left, right and center, and then tests for
> correctness. If there is a problem with the read patch, and hole
> creation, then fsx should find it and provide you with a nice dump of
> what went wrong, where, and what sequence of events lead up to the
> problem.
The holey test run on its own also gives a pretty short simple test
case.--b.
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On Thu, 2006-08-17 at 22:50 -0400, J. Bruce Fields wrote:
> The holey test run on its own also gives a pretty short simple test
> case.--b.
It would if it actually reproduced the problem on my setup. As it
doesn't, fsx is the second best option since it produces a full dump of
the offending file section.
Trond
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On Tue, 2006-08-08 at 15:20 -0400, Chuck Lever wrote:
> Is the connectathon holey test failure going to be fixed before 2.6.18
> is finalized?
Depends. Have you traced it in order to figure out what is wrong?
Cheers,
Trond
> This is from a 2.6.18-rc3 client:
>
> test exclusive create.
>
> test negative seek, you should get: read: Invalid argument
> or lseek: Invalid argument
> lseek: Invalid argument
>
> test rename
>
> test truncate
> truncate succeeded
>
> test holey file support
> read (hole) offset 8192, sz = 56667, bytes = 5141 (ret -1), holesz = 9012
> read: Input/output error
> special tests failed
> Tests failed, leaving /mnt/brahms mounted
> [cel@picasso cthon04]$
>
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On 8/8/06, Trond Myklebust <[email protected]> wrote:
> On Tue, 2006-08-08 at 15:20 -0400, Chuck Lever wrote:
> > Is the connectathon holey test failure going to be fixed before 2.6.18
> > is finalized?
>
> Depends. Have you traced it in order to figure out what is wrong?
Ah. Bruce reported this problem a while back, and said that it goes
away if one of your recent patches to fs/nfs/read.c is reverted.
Bruce?
--
"We who cut mere stones must always be envisioning cathedrals"
-- Quarry worker's creed
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