* Re: weird messages in blktrace pertaining to manor and minor
2009-07-30 12:55 weird messages in blktrace pertaining to manor and minor numbers Srinivasa R Chamarthy
@ 2009-07-30 13:03 ` Alan D. Brunelle
2009-07-30 13:33 ` Srinivasa R Chamarthy
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Alan D. Brunelle @ 2009-07-30 13:03 UTC (permalink / raw)
To: linux-btrace
On Thu, 2009-07-30 at 18:24 +0530, Srinivasa R Chamarthy wrote:
> Hello,
>
> I am running blktrace against scsi disks on linux. I get the
> following output which i am not able to infer some of the messages
> in it.
>
> 2057,8440 1 8043 0.580951687 2047 A W 14666 + 1 <-
> (253,0) 14666
> 8,0 1 8044 0.580951812 2047 Q W 14666 + 1
> [mkfs.ext3]
> 8,0 1 8045 0.580952000 2047 M W 14666 + 1
> [mkfs.ext3]
> 2057,8440 1 8046 0.580953656 2047 A W 14667 + 1 <-
> (253,0) 14667
> 8,0 1 8047 0.580953781 2047 Q W 14667 + 1
> [mkfs.ext3]
> 8,0 1 8048 0.580953968 2047 M W 14667 + 1
> [mkfs.ext3]
> 2057,8440 1 8049 0.580955406 2047 A W 14668 + 1 <-
> (253,0) 14668
> 8,0 1 8050 0.580955718 2047 Q W 14668 + 1
> [mkfs.ext3]
>
> For some of the lines, it shows the list of major and minor numbers
> (2057,8440) which are not there applicable to my system. I am not
> able to understand the output pertaining to these numbers and i do
> not find any documentation about them. Can anybody let me know what
> this output means?
>
> I have run blktrace as following:
>
> blktrace -d /dev/sda /dev/sdb -o - | blkparse -i -
>
> and ran mkfs.ext3 to the scsi disks.
>
What Linux version are you using? Issues in MD/DM mappings were fixed in
kernels post-RHEL5/SLES10 for example.
Alan
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: weird messages in blktrace pertaining to manor and minor
2009-07-30 12:55 weird messages in blktrace pertaining to manor and minor numbers Srinivasa R Chamarthy
2009-07-30 13:03 ` weird messages in blktrace pertaining to manor and minor Alan D. Brunelle
@ 2009-07-30 13:33 ` Srinivasa R Chamarthy
2009-07-30 13:57 ` weird messages in blktrace pertaining to manor and minor numbers Eric Sandeen
2009-07-30 14:08 ` weird messages in blktrace pertaining to manor and minor Alan D. Brunelle
3 siblings, 0 replies; 5+ messages in thread
From: Srinivasa R Chamarthy @ 2009-07-30 13:33 UTC (permalink / raw)
To: linux-btrace
Hi Alan,
Thanks for the reply.
I am using RHEL5.4 Snap-3 with kernel version 2.6.18-158.el5 for
testing on s390x for test.
The blktrace version is:
blktrace version 1.0.0
On Thu, Jul 30, 2009 at 09:03:16AM -0400, Alan D. Brunelle wrote:
> On Thu, 2009-07-30 at 18:24 +0530, Srinivasa R Chamarthy wrote:
> > Hello,
> >
> > I am running blktrace against scsi disks on linux. I get the
> > following output which i am not able to infer some of the messages
> > in it.
> >
> > 2057,8440 1 8043 0.580951687 2047 A W 14666 + 1 <-
> > (253,0) 14666
> > 8,0 1 8044 0.580951812 2047 Q W 14666 + 1
> > [mkfs.ext3]
> > 8,0 1 8045 0.580952000 2047 M W 14666 + 1
> > [mkfs.ext3]
> > 2057,8440 1 8046 0.580953656 2047 A W 14667 + 1 <-
> > (253,0) 14667
> > 8,0 1 8047 0.580953781 2047 Q W 14667 + 1
> > [mkfs.ext3]
> > 8,0 1 8048 0.580953968 2047 M W 14667 + 1
> > [mkfs.ext3]
> > 2057,8440 1 8049 0.580955406 2047 A W 14668 + 1 <-
> > (253,0) 14668
> > 8,0 1 8050 0.580955718 2047 Q W 14668 + 1
> > [mkfs.ext3]
> >
> > For some of the lines, it shows the list of major and minor numbers
> > (2057,8440) which are not there applicable to my system. I am not
> > able to understand the output pertaining to these numbers and i do
> > not find any documentation about them. Can anybody let me know what
> > this output means?
> >
> > I have run blktrace as following:
> >
> > blktrace -d /dev/sda /dev/sdb -o - | blkparse -i -
> >
> > and ran mkfs.ext3 to the scsi disks.
> >
>
> What Linux version are you using? Issues in MD/DM mappings were fixed in
> kernels post-RHEL5/SLES10 for example.
>
> Alan
>
--
Srinivasa R Chamarthy (schamart@linux.vnet.ibm.com)
---------------------------------------------------
Linux on System z (Component & System Verification),
IBM India Systems and Technology Labs, Bangalore.
+91-80-41776451 / ITN: *869246992
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: weird messages in blktrace pertaining to manor and minor numbers
2009-07-30 12:55 weird messages in blktrace pertaining to manor and minor numbers Srinivasa R Chamarthy
2009-07-30 13:03 ` weird messages in blktrace pertaining to manor and minor Alan D. Brunelle
2009-07-30 13:33 ` Srinivasa R Chamarthy
@ 2009-07-30 13:57 ` Eric Sandeen
2009-07-30 14:08 ` weird messages in blktrace pertaining to manor and minor Alan D. Brunelle
3 siblings, 0 replies; 5+ messages in thread
From: Eric Sandeen @ 2009-07-30 13:57 UTC (permalink / raw)
To: linux-btrace
Alan D. Brunelle wrote:
> On Thu, 2009-07-30 at 18:24 +0530, Srinivasa R Chamarthy wrote:
>> Hello,
>>
>> I am running blktrace against scsi disks on linux. I get the
>> following output which i am not able to infer some of the messages
>> in it.
...
> What Linux version are you using? Issues in MD/DM mappings were fixed in
> kernels post-RHEL5/SLES10 for example.
>
> Alan
Alan, if you happen to know, would you mind pointing me at the commits?
I had a quick look through the blktrace changelogs and nothing popped
out at me...
Thanks,
-Eric
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: weird messages in blktrace pertaining to manor and minor
2009-07-30 12:55 weird messages in blktrace pertaining to manor and minor numbers Srinivasa R Chamarthy
` (2 preceding siblings ...)
2009-07-30 13:57 ` weird messages in blktrace pertaining to manor and minor numbers Eric Sandeen
@ 2009-07-30 14:08 ` Alan D. Brunelle
3 siblings, 0 replies; 5+ messages in thread
From: Alan D. Brunelle @ 2009-07-30 14:08 UTC (permalink / raw)
To: linux-btrace
On Thu, 2009-07-30 at 08:57 -0500, Eric Sandeen wrote:
> Alan D. Brunelle wrote:
> > On Thu, 2009-07-30 at 18:24 +0530, Srinivasa R Chamarthy wrote:
> >> Hello,
> >>
> >> I am running blktrace against scsi disks on linux. I get the
> >> following output which i am not able to infer some of the messages
> >> in it.
>
> ...
>
> > What Linux version are you using? Issues in MD/DM mappings were fixed in
> > kernels post-RHEL5/SLES10 for example.
> >
> > Alan
>
> Alan, if you happen to know, would you mind pointing me at the commits?
> I had a quick look through the blktrace changelogs and nothing popped
> out at me...
>
> Thanks,
> -Eric
Hi Eric-
Here are some that I can recall off the top of my head - I think this
catches them all:
commit 79c5d3ce614d8fe706545c7bca2158b63db6bb5e
Author: Li Zefan <lizf@cn.fujitsu.com>
Date: Mon May 11 15:06:46 2009 +0800
blktrace: from-sector redundant in trace_block_remap, cleanup
The last argument of block_remap prober is the original sector
before remap, so it should be 'from', not 'to'.
[ Impact: clean up ]
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: "Alan D. Brunelle" <Alan.Brunelle@hp.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
LKML-Reference: <4A07CE86.5090301@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
commit 22a7c31a9659deaddafbbcec6562d44141e84474
Author: Alan D. Brunelle <Alan.Brunelle@hp.com>
Date: Mon May 4 16:35:08 2009 -0400
blktrace: from-sector redundant in trace_block_remap
Remove redundant from-sector parameter: it's /always/ the bio's
sector
passed in.
[ Impact: cleanup ]
Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <49FF517C.7000503@hp.com>commit
a42aaa3bbce85ac487ad4fad5db99e8e91b7aac1
Author: Alan D. Brunelle <Alan.Brunelle@hp.com>
Date: Mon May 4 16:27:26 2009 -0400
blktrace: correct remap names
This attempts to clarify names utilized during block I/O remap
operations (partition, volume manager). It correctly matches up the
/from/ information for both device & sector. This takes in the
concept
from Kosaki Motohiro and extends it to include better naming for the
"device_from" field.
[ Impact: cleanup ]
Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <49FF4FAE.3000301@hp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
commit a42aaa3bbce85ac487ad4fad5db99e8e91b7aac1
Author: Alan D. Brunelle <Alan.Brunelle@hp.com>
Date: Mon May 4 16:27:26 2009 -0400
blktrace: correct remap names
This attempts to clarify names utilized during block I/O remap
operations (partition, volume manager). It correctly matches up the
/from/ information for both device & sector. This takes in the
concept
from Kosaki Motohiro and extends it to include better naming for the
"device_from" field.
[ Impact: cleanup ]
Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <49FF4FAE.3000301@hp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
^ permalink raw reply [flat|nested] 5+ messages in thread