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Full Discussion: DISK and MPIO
Operating Systems AIX DISK and MPIO Post 303033176 by Phat on Monday 1st of April 2019 06:20:45 AM
Old 04-01-2019
DISK and MPIO

Hello,
I have some concerns over the disk management of my AIX system.
For example server1
Code:
[root@server1] / > lspv
hdisk0          00fa6d1288c820aa                    rootvg          active
hdisk1          00fa6d1288c8213c                    vg_2           active
hdisk2          00c1cc14d6de272b                    vg_3            active
hdisk3          00c1cc14d6de27e5                    vg_3            active
hdisk4          00c1cc14d6de2898                    vg_3            active
hdisk5          00c1cc14d6de2958                    vg_3            active
hdisk6          00c1cc14d6de2a07                    vg_3            active
hdisk7          00c1cc14716beb5c                    vg_3            active
hdisk8          00c1cc14816d37d0                    vg_2           active
hdisk9          00c1cc14816d38a0                    vg_3            active
hdisk10         00c1cc14816d396c                    vg_3            active
hdisk11         00c1cc14716beb98                    vg_3            active
hdisk12         00c1cc14716bebd9                    vg_3            active
hdisk13         none                                None

[root@server1] / > mpio_get_config -A
    Storage Subsystem worldwide name: 600a0b80006e87a4000000004f59530d
    Storage Subsystem Name = 'SGDS5KSTG'
        hdisk#           LUN #   Ownership          User Label
        hdisk0               0   B (preferred)      OS_01
        hdisk1               1   B (preferred)       OS_02
        hdisk2               2   B (preferred)      VG_01
        hdisk3               3   B (preferred)      VG_02
        hdisk4               4   B (preferred)      SVG_03
        hdisk5               5   B (preferred)      VG_04
        hdisk6               6   B (preferred)      VG_05
        hdisk7               7   B (preferred)      VG_10
        hdisk8               8   A (preferred)      VG_07
        hdisk9               9   A (preferred)      VG_08
        hdisk10             10   A (preferred)      VG_09
        hdisk11             11   B (preferred)      VG_11
        hdisk12             12   B (preferred)      VG_12

[root@server1] / > lsdev -Cc disk
hdisk0  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk1  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk2  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk3  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk4  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk5  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk6  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk7  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk8  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk9  Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk10 Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk11 Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk12 Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk13 Available 23-T1-01 MPIO FC 2145

So my questions are:
1. I can see there is 14 hdisks (from hdisk#0 to hdisk#13, come from DS5K) but in the mpio_get_config I only see 13 hdisks (from hdisk#0 to hdisk#12), the hdisk#13 is the new one from different storage V7000.
From my point of view, the mpio_get_config command should display the mpio info of hdisk#13 as well?

2. What difference between this? It should be show the same drivers as the driver is AIX PCM?
Code:
hdisk12 Available 23-T1-01 MPIO DS5100/5300 Disk
hdisk13 Available 23-T1-01 MPIO FC 2145

3. And in the server2, the mpio_get_config command even returns no results
Code:
[root@server2] / > mpio_get_config -A
Error: Unable to find devices.

Can we know in which context mpio_get_config command is applicable?
 

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