Description of problem:
when whole disk is considered as PV, the disk is not found in the lshw output. 



Version-Release number of selected component (if applicable):
lshw-B.02.17-5.el7.x86_64

How reproducible:
create a pv on /dev/sdb (or any disk)
lshw will not list it.

Steps to Reproduce:
see below in additional info

Actual results:
disks not found in lshw output even though they exist. The disks not found have pvs on them (entire device, no partitions)

Expected results:
lshw should report pv's

Additional info:

[root@dhcp6-217 src]# fdisk -l

Disk /dev/vda: 10.7 GB, 10737418240 bytes, 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000df364

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *        2048     1026047      512000   83  Linux
/dev/vda2         1026048    20971519     9972736   8e  Linux LVM

Disk /dev/sda: 3221 MB, 3221225472 bytes, 6291456 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/rhel_dhcp6--217-root: 9093 MB, 9093251072 bytes, 17760256 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/rhel_dhcp6--217-swap: 1073 MB, 1073741824 bytes, 2097152 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sdb: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

[root@dhcp6-217 src]# pvs
  PV         VG             Fmt  Attr PSize PFree 
  /dev/sda                  lvm2 ---  3.00g  3.00g
  /dev/sdb                  lvm2 ---  2.00g  2.00g
  /dev/vda2  rhel_dhcp6-217 lvm2 a--  9.51g 40.00m
[root@dhcp6-217 src]# lshw -class disk
  *-cdrom                 
       description: SCSI CD-ROM
       physical id: 0.0.0
       bus info: scsi@1:0.0.0
       logical name: /dev/cdrom
       logical name: /dev/sr0
       capabilities: audio
       configuration: status=nodisc
[root@dhcp6-217 src]# 


----------------------------------------------------------------------------------------------


<nkshirsa> i looked at the lshw code to understand why pv's are not being reported, it seems like they are being reported in the scan_scsi and scan_device methods, (i can see the device on which i have made pv), but when it arrives to print (which is a complex recursive call and i cannot seem to be able to print node through gdb) it doesnt have that device to be printed)
<nkshirsa> i think the issue is while printing.. 
<poros> really? where?
<nkshirsa> during building the computer node, i can see its finding the disks and even marking them as lvm disks.. 
<nkshirsa> but when it calls print from the main function in lshw.cc , its not able to find the recursive structures inside while printing .. so it never prints them.. 
<nkshirsa> i ran it through gdb and i can see scan_partitions and scan_lvm being called and correctly populated for the pv's
<nkshirsa> but once it prints, it goes into several levels of recursion and im having trouble printing the vector node, config, resources through gdb, so i lose track of where i am in the tree.. but i am sure its not finding those disk objects and therefore not printing them
<nkshirsa> anyway, im done for today, please let me know if you do understand why the pv's are not being printed. i am now filing bz and will put all the investigation so far in it, it will get assigned to you i guess. 
<poros> ok