On 12/05/2020 10:35, Jason Yan wrote:
在 2020/5/12 16:23, John Garry 写道:
On 12/05/2020 07:33, Jason Yan wrote:
The 'proc_name' entry in sysfs for hisi_sas is 'null' now becuase it is
not initialized in scsi_host_template. It looks like:
[root@localhost ~]# cat /sys/class/scsi_host/host2/proc_name
(null)
hmmm.. it would be good to tell us what this buys us, apart from the
proc_name file.
When there is more than one storage cards(or controllers) in the system,
I'm tring to find out which host is belong to which card. And then I
found this in scsi_host in sysfs but the output is '(null)' which is odd.
"dmesg | grep host" would give this info, like:
root@(none)$ dmesg | grep host0
[ 8.877245] scsi host0: hisi_sas_v2_hw
I mean, if we had the sht show_info method implemented, then it could
be useful (which is even marked as obsolete now).
I found this is interesting while in the sysfs filesystem we have a
procfs stuff in it.
It's only the name of the procfs entry, if it exists.
And, since .show_info is obsolete, I don't see why .proc_name is not
also obsolete.
I was planned to rename this entry to 'name' and use
the struct member 'name' directly in struct scsi_host_template. But this
may break userspace applications.
Thanks,
John
