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Some I/O requests to this LV are waiting

NDO
Super Advisor

Some I/O requests to this LV are waiting

Hi All

I have a blade BL860c running on a C7000 chassis, in which is connected to a NetApp, so lately I am having I/O issues, and dmesg as well as syslog.log is reporting the following:
/dev/vg01/lvol2 file system file data error in dev/block 0/55892768
Page I/O error occurred while paging to/from disk
PVlink 31 0x050200 Failed. The PV is not accessible.

My opinion is that this is a problem of some disk on the NetApp, please can you guys confirm?

regards

4 REPLIES
Patrick Wallek
Honored Contributor

Re: Some I/O requests to this LV are waiting

>>PVlink 31 0x050200 Failed. The PV is not accessible

 

This is indicating that a disk, or the path to a disk, has failed.  This disk is c5t0d2.

 

 

NDO
Super Advisor

Re: Some I/O requests to this LV are waiting

Hi

Thank you very much for your reply, pls can you tell me if there any more evidence that the problem is either fc cables or disk itself from the NetApp. And also how todecode the HEX number?

regards

Patrick Wallek
Honored Contributor

Re: Some I/O requests to this LV are waiting

From the information given, it is hard to tell.

 

If you can attach the /var/adm/syslog/syslog and the output from 'ioscan -fn' that may shed a bit more light on things.

 

As to decoding the hex disk --

 

The device you posted is 0x050200:

 

Ignore the 0x part.

 

The first 2 digits are the controller in hex -- In this case a hex '05' -- so -- c5

 

The 3rd digit is the target in hex -- In this case a 0 -- so -- t0

 

The 4th digit is the device in hext -- In this case a 2 -- so -- d2

 

The 5th and 6th digits can be ignored. 

 

In this case -- c5t0d2

 

 

 

 

NDO
Super Advisor

Re: Some I/O requests to this LV are waiting

Hi

 

Pls find attached o/p of ioscan -fn and syslog.log

 

rg