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Bug 642424 - [RFE] Support performance statistics in /sys/class/fc_host/host?/statistics for QLogic FibreChannel HBAs
Summary: [RFE] Support performance statistics in /sys/class/fc_host/host?/statistics f...
Keywords:
Status: CLOSED CANTFIX
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.1
Hardware: All
OS: Linux
low
medium
Target Milestone: rc
: ---
Assignee: Red Hat Kernel Manager
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On: 642422
Blocks: 662543
TreeView+ depends on / blocked
 
Reported: 2010-10-12 21:06 UTC by Chris Williams
Modified: 2018-11-14 16:51 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Clone Of: 642422
Environment:
Last Closed: 2011-03-18 12:35:57 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Comment 5 Julio Entrena Perez 2011-02-17 17:02:52 UTC 
The kernel module for the QLogic FibreChannel HBAs does not provide the
performance statistics announced at /sys/class/fc_host/host?/statistics:

[root statistics]# pwd
/sys/class/fc_host/host5/statistics
[root statistics]# for i in `ls`
> do
> echo -n "$i: "
> cat $i
> done
dumped_frames: 0xffffffffffffffff
error_frames: 0xffffffffffffffff
fcp_control_requests: 0xffffffffffffffff
fcp_input_megabytes: 0x613
fcp_input_requests: 0xffffffffffffffff
fcp_output_megabytes: 0x36a
fcp_output_requests: 0xffffffffffffffff
invalid_crc_count: 0x0
invalid_tx_word_count: 0xb
link_failure_count: 0x0
lip_count: 0xffffffffffffffff
loss_of_signal_count: 0x1
loss_of_sync_count: 0x1
nos_count: 0xffffffffffffffff
prim_seq_protocol_err_count: 0x0
reset_statistics: cat: reset_statistics: Permission denied
rx_frames: 0xffffffffffffffff
rx_words: 0xffffffffffffffff
seconds_since_last_reset: 0xffffffffffffffff
tx_frames: 0xffffffffffffffff
tx_words: 0xffffffffffffffff

Most values have -1 values. Furthermore, the QLogic SANSurfer CLI is not able
to display HBA statistics from the Red Hat provided driver: 

[root statistics]# scli -gs 0
This feature is not supported with current driver!

The driver should provide this information and/or should support the QLogic
SANSurfer CLI utility.

Currently the QLogic driver provided by Red Hat does not provide this
information. The QLogic driver provided by QLogic does.


Files in /sys/class/fc_host/host?/statistics should show the proper statistics
information for each HBA. Also, if possible, the QLogic SANSurfer utility should be able to grab this information from the driver too.
Comment 7 Julio Entrena Perez 2011-03-18 12:35:57 UTC 
According to Bug #642422, we can't really export more fc host statistics as we already export what is available from our firmware. Closing.
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