Home » Mailing list archives » linux-kernel » 2007 » October » 30

Re: [BUG] nfs: readv/writev with O_DIRECT fails on 2.6.24-rc1

Previous thread: [PATCH] INPUT: fix hidinput_connect ignoring retval from input_register_device by Dirk Hohndel on Monday, October 29, 2007 - 2:51 am. (14 messages)

Next thread: kernel BUG at mm/slab.c:597! by marco gaddoni on Monday, October 29, 2007 - 3:50 am. (2 messages)
[view original message]
From: gurudas pai <gurudas.pai@...>
To: lkml <linux-kernel@...>
Subject: [BUG] nfs: readv/writev with O_DIRECT fails on 2.6.24-rc1
Date: Monday, October 29, 2007 - 3:30 am

Hi,


While running olt kit on 2.6.24-rc1 over nfs , Oracle reported I/O

errors. I debugged little more and found that readv/writev are failing

with O_DIRECT on nfs ( netapp's filer).


I am able to re-produce same error using ltp/diotest5.


./diotest5  -f /storage/nas/testfile -v 5


diotest05 1953719669  FAIL  :  readv failed: Invalid argument

diotest05 1953719670  FAIL  :  Read with Direct IO, Write without

diotest05 1953719671  FAIL  :  writev failed: Invalid argument

diotest05 1953719672  FAIL  :  Write with Direct IO, Read without

diotest05 1953719673  FAIL  :  writev failed: Invalid argument

diotest05 1953719674  FAIL  :  Read, Write with Direct IO

diotest05    0  INFO  :  3/3 testblocks failed


 >strace -e readv,writev ./diotest5  -f /storage/nas/testfile -v 5

writev(3, [{"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}], 5) = 20480

readv(4, 0x8051000, 5)                  = -1 EINVAL (Invalid argument)

diotest05 1953719669  FAIL  :  readv failed: Invalid argument

diotest05 1953719670  FAIL  :  Read with Direct IO, Write without

writev(3, [{"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}], 5) = -1 EINVAL(Invalid argument)

diotest05 1953719671  FAIL  :  writev failed: Invalid argument

diotest05 1953719672  FAIL  :  Write with Direct IO, Read without

writev(3, [{"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\...
[ message continues ]
[view original message]
From: Trond Myklebust <trond.myklebust@...>
To: gurudas pai <gurudas.pai@...>
Cc: lkml <linux-kernel@...>
Subject: Re: [BUG] nfs: readv/writev with O_DIRECT fails on 2.6.24-rc1
Date: Monday, October 29, 2007 - 3:59 pm

Nobody has yet added support for nvec>1.


Trond


-
[view original message]
From: Gurudas Pai <gurudas.pai@...>
To: Trond Myklebust <trond.myklebust@...>
Cc: lkml <linux-kernel@...>
Subject: Re: [BUG] nfs: readv/writev with O_DIRECT fails on 2.6.24-rc1
Date: Tuesday, October 30, 2007 - 2:52 am

Tried with old kernel 2.6.18-8 (RHEL5), test passed with nvec=5.


 >strace -fff -e readv,writev,open  ./diotest5 -f /storage/nas/testfile -v 5

open("/etc/ld.so.cache", O_RDONLY)      = 3

open("/lib/libc.so.6", O_RDONLY)        = 3

open("/storage/nas/ca-ostest184.us.oracle.com/testfile",

O_RDONLY|O_CREAT|O_DIRECT, 0666) = 3

open("/storage/nas/testfile", O_WRONLY|O_CREAT, 0666) = 3

open("/storage/nas//testfile", O_RDONLY|O_CREAT|O_DIRECT|O_LARGEFILE,

0666) = 4

writev(3, [{"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}], 5) = 20480

readv(4, [{"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,

4096}], 5) = 20480

writev(3, [{"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}, {"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}, {"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}, {"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}, {"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}], 5) = 20480

readv(4, [{"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}, {"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}, {"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}, {"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}, {"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"...,

4096}], 5) = 20480

writev(3, [{"\2\2\2\2\2\2\2\2\2\2\2\2\2\2\2\2\2\2\2\2\...
[ message continues ]
Previous thread: [PATCH] INPUT: fix hidinput_connect ignoring retval from input_register_device by Dirk Hohndel on Monday, October 29, 2007 - 2:51 am. (14 messages)

Next thread: kernel BUG at mm/slab.c:597! by marco gaddoni on Monday, October 29, 2007 - 3:50 am. (2 messages)