XFS log warning "Writing back config space on device"

XFS log warning "Writing back config space on device"

[amilrego]

Hello.
I have formated one 300 GB partition in Linux OS, and then i worked whitout
problems.
But, If I do a "dmesg" there is a warning error (i don´t know if is really a
problem or maybe could cause problems in future):

SCSI device sdb: drive cache: write back
 sdb: sdb1
 ---

XFS mounting filesystem sdb1
Ending clean XFS mount for filesystem: sdb1
PM: Writing back config space on device 0000:05:02.0 at offset b (was
165314e4, writing 12bc103c)
PM: Writing back config space on device 0000:05:02.0 at offset 3 (was 0,
writing 4010)
PM: Writing back config space on device 0000:05:02.0 at offset 2 (was
2000000, writing 2000003)
PM: Writing back config space on device 0000:05:02.0 at offset 1 (was
2b00000, writing 2b00106)
PM: Writing back config space on device 0000:05:02.0 at offset 0 (was
165314e4, writing 169614e4)

This partition allways was dismounted correctly, and there is low
fragmentation.
I really don´t know if in the future I could have problems. Maybe there are
any way to solve this warnings.

Thanks!!
Víctor Amil 

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Re: XFS log warning "Writing back config space on device"

[Eric Sandeen]

amilrego wrote:
> Hello.
> I have formated one 300 GB partition in Linux OS, and then i worked whitout
> problems.
> But, If I do a "dmesg" there is a warning error (i don´t know if is really a
> problem or maybe could cause problems in future):
> 
> SCSI device sdb: drive cache: write back
>  sdb: sdb1
>  ---
> 
> XFS mounting filesystem sdb1
> Ending clean XFS mount for filesystem: sdb1
> PM: Writing back config space on device 0000:05:02.0 at offset b (was
> 165314e4, writing 12bc103c)

That's not an xfs message; it's from the PCI subsystem.  It shouldn't be
related to anything xfs is doing...  It's also only a debug-level
message (at least in 2.6.18).

-eric

Re: XFS log warning "Writing back config space on device"

[amilrego]

Eric Sandeen-3 wrote:
> 
> amilrego wrote:
>> Hello.
>> I have formated one 300 GB partition in Linux OS, and then i worked
>> whitout
>> problems.
>> But, If I do a "dmesg" there is a warning error (i don´t know if is
>> really a
>> problem or maybe could cause problems in future):
>> 
>> SCSI device sdb: drive cache: write back
>>  sdb: sdb1
>>  ---
>> 
>> XFS mounting filesystem sdb1
>> Ending clean XFS mount for filesystem: sdb1
>> PM: Writing back config space on device 0000:05:02.0 at offset b (was
>> 165314e4, writing 12bc103c)
> 
> That's not an xfs message; it's from the PCI subsystem.  It shouldn't be
> related to anything xfs is doing...  It's also only a debug-level
> message (at least in 2.6.18).
> 
> -eric
> 
> 
> 
> 

Thanks Eric. Really, I am running 2.6.18 then it is only a debug message :)

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