Devices and Virtual Partitions

   

HP-UX Virtual Partitions
By Marty Poniatowski

Table of Contents
Chapter 4.  Building an HP-UX Kernel


You may be moving various devices on your HP 9000 from one Virtual Partition to another. This means that the kernels in the respective Virtual Partitions will need to have in them the drivers of hardware devices which will be used by the Virtual Partition. Let's take a look at all of the hardware on our system and then see if there is a component we'll want to move from one Virtual Partition to another.

To begin with, let's take a look at the full hardware on a system with ioscan -f in the following example:

 cvhdcon3:/ # ioscan -fn  Class       I  H/W Path       Driver    S/W State   H/W Type     Description  =============================================================================  root        0                 root      CLAIMED     BUS_NEXUS  ioa         0  0              sba       CLAIMED     BUS_NEXUS    System Bus Adap  ter (803)  ba          0  0/0            lba       CLAIMED     BUS_NEXUS    Local PCI Bus A  dapter (782)  lan         0  0/0/0/0        btlan     CLAIMED     INTERFACE    HP PCI 10/100Ba  se-TX Core                               /dev/diag/lan0  /dev/ether0     /dev/lan0  ext_bus     0  0/0/1/0        c720      CLAIMED     INTERFACE    SCSI C896 Ultra   Wide Single-Ended  target      0  0/0/1/0.1      tgt       CLAIMED     DEVICE  disk        0  0/0/1/0.1.0    sdisk     CLAIMED     DEVICE       HP      DVD-ROM   304                               /dev/dsk/c0t1d0   /dev/rdsk/c0t1d0  target      1  0/0/1/0.3      tgt       CLAIMED     DEVICE  tape        0  0/0/1/0.3.0    stape     CLAIMED     DEVICE       HP      C1537A                               /dev/rmt/0m            /dev/rmt/c0t3d0BESTn                               /dev/rmt/0mb           /dev/rmt/c0t3d0BESTnb                               /dev/rmt/0mn           /dev/rmt/c0t3d0DDS                               /dev/rmt/0mnb          /dev/rmt/c0t3d0DDSb                               /dev/rmt/c0t3d0BEST    /dev/rmt/c0t3d0DDSn                               /dev/rmt/c0t3d0BESTb   /dev/rmt/c0t3d0DDSnb  target      2  0/0/1/0.7      tgt       CLAIMED      DEVICE  ctl         0  /0/1/0.7.0     sctl      CLAIMED      DEVICE      Initiator                               /dev/rscsi/c0t7d0  ext_bus     1  0/0/1/1        c720      CLAIMED      INTERFACE   SCSI C896 Ultra   Wide Single-Ended  target      3  0/0/1/1.0      tgt       CLAIMED      DEVICE  disk        1  0/0/1/1.0.0    sdisk     CLAIMED     DEVICE       SEAGATE ST17340  4LC                               /dev/dsk/c1t0d0   /dev/rdsk/c1t0d0  target      4  0/0/1/1.2      tgt       CLAIMED     DEVICE  disk        2  0/0/1/1.2.0    sdisk     CLAIMED     DEVICE       SEAGATE ST17340  4LC                               /dev/dsk/c1t2d0   /dev/rdsk/c1t2d0  target      5  0/0/1/1.7      tgt       CLAIMED     DEVICE  ctl         1  0/0/1/1.7.0    sctl      CLAIMED     DEVICE       Initiator                               /dev/rscsi/c1t7d0  ext_bus     2  0/0/2/0        c720      CLAIMED     INTERFACE    SCSI C87x Ultra   Wide Single-Ended  target      6  0/0/2/0.0      tgt       CLAIMED     DEVICE  disk        3  0/0/2/0.0.0    sdisk     CLAIMED     DEVICE       SEAGATE ST17340  4LC                               /dev/dsk/c2t0d0   /dev/rdsk/c2t0d0  target      7  0/0/2/0.2      tgt       CLAIMED     DEVICE  disk        4  0/0/2/0.2.0    sdisk     CLAIMED     DEVICE       SEAGATE ST17340  4LC                               /dev/dsk/c2t2d0   /dev/rdsk/c2t2d0  target      8  0/0/2/0.7      tgt       CLAIMED     DEVICE  ctl         2  0/0/2/0.7.0    sctl      CLAIMED     DEVICE       Initiator                               /dev/rscsi/c2t7d0  ext_bus     3  0/0/2/1        c720      CLAIMED     INTERFACE    SCSI C87x Ultra   Wide Single-Ended  target      9  0/0/2/1.7      tgt       CLAIMED     DEVICE  ctl         3  0/0/2/1.7.0    sctl      CLAIMED     DEVICE       Initiator                               /dev/rscsi/c3t7d0  tty         0  0/0/4/0        asio0     CLAIMED     INTERFACE    PCI Serial (103  c1048)                               /dev/GSPdiag1   /dev/mux0       /dev/tty0p1                               /dev/diag/mux0  /dev/tty0p0     /dev/tty0p2  tty         1  0/0/5/0        asio0     CLAIMED     INTERFACE    PCI Serial (103  c1048)                               /dev/GSPdiag2   /dev/mux1                               /dev/diag/mux1  /dev/tty1p1  ba          1  0/1            lba       CLAIMED     BUS_NEXUS    Local PCI Bus A  dapter (782)  ba          2  0/2            lba       CLAIMED     BUS_NEXUS    Local PCI Bus A  dapter (782)  ba          3  0/3            lba       CLAIMED     BUS_NEXUS    Local PCI Bus A  dapter (782)  ba          4  0/4            lba       CLAIMED     BUS_NEXUS    Local PCI Bus A  dapter (782)  ba          5  0/5            lba       CLAIMED     BUS_NEXUS    Local PCI Bus A  dapter (782)  ba          6  0/8            lba       CLAIMED     BUS_NEXUS    Local PCI Bus A  dapter (782)  fc          0  0/8/0/0        td        CLAIMED     INTERFACE    HP Tachyon TL/T  S Fibre Channel Mass Storage Adapter                               /dev/td0  fcp         0  0/8/0/0.8      fcp       CLAIMED     INTERFACE    FCP Protocol Ad  apter  ext_bus     7  0/8/0/0.8.0.5.0        fcparray  CLAIMED     INTERFACE    FCP Arr  ay Interface  target     10  0/8/0/0.8.0.5.0.0      tgt       CLAIMED     DEVICE  disk        7  0/8/0/0.8.0.5.0.0.0    sdisk     CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c7t0d0   /dev/rdsk/c7t0d0  disk       10  0/8/0/0.8.0.5.0.0.1    sdisk     CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c7t0d1   /dev/rdsk/c7t0d1  disk       11  0/8/0/0.8.0.5.0.0.2    sdisk     CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c7t0d2   /dev/rdsk/c7t0d2  disk       12  0/8/0/0.8.0.5.0.0.3    sdisk     CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c7t0d3   /dev/rdsk/c7t0d3  target     11  0/8/0/0.8.0.5.0.1      tgt       CLAIMED     DEVICE  disk       15  0/8/0/0.8.0.5.0.1.0    sdisk     CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c7t1d0   /dev/rdsk/c7t1d0  target     12  0/8/0/0.8.0.5.0.2      tgt       CLAIMED     DEVICE  disk       17  0/8/0/0.8.0.5.0.2.0    sdisk     CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c7t2d0  /dev/rdsk/c7t2d0  target     13  0/8/0/0.8.0.5.0.3      tgt      CLAIMED     DEVICE  disk       18  0/8/0/0.8.0.5.0.3.0    sdisk    CLAIMED     DEVICE        HP   A5277A                               /dev/dsk/c7t3d0  /dev/rdsk/c7t3d0  ext_bus     4  0/8/0/0.8.0.255.0      fcpdev   CLAIMED     INTERFACE     FCP Dev  ice Interface  target     14  0/8/0/0.8.0.255.0.5    tgt      CLAIMED     DEVICE  ctl         4  0/8/0/0.8.0.255.0.5.0  sctl     CLAIMED     DEVICE        HP   A5277A                               /dev/rscsi/c4t5d0  ba          7  0/9            lba       CLAIMED    BUS_NEXUS    Local PCI Bus A  dapter (782)  fc          1  0/9/0/0        td        CLAIMED    INTERFACE    HP Tachyon TL/T  S Fibre Channel Mass Storage Adapter                               /dev/td1  fcp         1  0/9/0/0.8      fcp       CLAIMED    INTERFACE    FCP Protocol Ad  apter  ext_bus     6  0/9/0/0.8.0.4.0        fcparray CLAIMED     INTERFACE    FCP Arr  ay Interface  target     15  0/9/0/0.8.0.4.0.0      tgt      CLAIMED     DEVICE  disk        5  0/9/0/0.8.0.4.0.0.0    sdisk    CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c6t0d0  /dev/rdsk/c6t0d0  disk        6  0/9/0/0.8.0.4.0.0.1    sdisk    CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c6t0d1  /dev/rdsk/c6t0d1  disk        8  0/9/0/0.8.0.4.0.0.2    sdisk    CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c6t0d2  /dev/rdsk/c6t0d2  disk        9  0/9/0/0.8.0.4.0.0.3    sdisk    CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c6t0d3  /dev/rdsk/c6t0d3  target     16  0/9/0/0.8.0.4.0.1      tgt      CLAIMED     DEVICE  disk       13  0/9/0/0.8.0.4.0.1.0    sdisk    CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c6t1d0  /dev/rdsk/c6t1d0  target     17  0/9/0/0.8.0.4.0.2      tgt      CLAIMED     DEVICE  disk       14  0/9/0/0.8.0.4.0.2.0    sdisk    CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c6t2d0  /dev/rdsk/c6t2d0  target     18  0/9/0/0.8.0.4.0.3      tgt      CLAIMED     DEVICE  disk       16  0/9/0/0.8.0.4.0.3.0    sdisk    CLAIMED     DEVICE       HP   A5277A                               /dev/dsk/c6t3d0  /dev/rdsk/c6t3d0  ext_bus     5  0/9/0/0.8.0.255.0      fcpdev   CLAIMED     INTERFACE    FCP Dev  ice Interface  target     19  0/9/0/0.8.0.255.0.4    tgt      CLAIMED     DEVICE  ctl         5  0/9/0/0.8.0.255.0.4.0  sctl     CLAIMED     DEVICE       HP   A5277A                               /dev/rscsi/c5t4d0  ba          8  0/10           lba       CLAIMED    BUS_NEXUS    Local PCI Bus A  dapter (782)  lan         1  0/10/0/0       btlan     CLAIMED    INTERFACE    HP A5230A/B5509  BA PCI 10/100Base-TX Addon                               /dev/diag/lan1  /dev/ether1    /dev/lan1  ba          9  0/12           lba       CLAIMED    BUS_NEXUS    Local PCI Bus A  dapter (782)  lan         2  0/12/0/0       btlan     CLAIMED    INTERFACE    HP A5230A/B5509  BA PCI 10/100Base-TX Addon                               /dev/diag/lan2  /dev/ether2    /dev/lan2  pbc         0  32             pbc       CLAIMED    BUS_NEXUS    Bus Converter  processor   0  33             processor CLAIMED    PROCESSOR    Processor  pbc         1  36             pbc       CLAIMED    BUS_NEXUS    Bus Converter  processor   1  37             processor CLAIMED    PROCESSOR    Processor  pbc         2  96             pbc       CLAIMED    BUS_NEXUS    Bus Converter  processor   2  97             processor CLAIMED    PROCESSOR    Processor  pbc         3  100            pbc       CLAIMED    BUS_NEXUS    Bus Converter  processor   3  101            processor CLAIMED    PROCESSOR    Processor  memory      0  192            memory    CLAIMED    MEMORY       Memory  virtbus     0  es             sdm       CLAIMED    VIRTBUS      Enhanced-SCSI v  irtual bus  cvhdcon3:/ # 

I used the -f option because it produces a full listing of all I/O. I omitted the -u option, which produces a list of usable I/O devices. For a device to be usable, there must be a driver for the device in the kernel and an instance number. I often find devices on a system for which no driver exists in the kernel. I like to know about these devices so I can add a driver and use them if none exists.

Going back to our earlier ioscan -f example, there was a DDS drive present in the listing. The tape drive is assigned to vPar cable1 but not cable2, as shown in the following listing:

graphics/intfig04.gif

 # vparstatus -p cable1 -v  [Virtual Partition Details]  Name:         cable1  State:        Up  Attributes:   Dynamic,Manual  Kernel Path:  /stand/vmunix  Boot Opts:  [CPU Details]  Min/Max:  2/3  Bound [Path]:  33                 37  Unbound [Path]:  [IO Details]     0.0.1.1.2.0  BOOT     0.0.4.0  CONSOLE     0.0.0.0     0.0.1.0.3.0               <-- tape drive in cable1  [Memory Details]  Specified [Base  /Range]:            (bytes) (MB)  Total Memory (MB):  2048  # 
 # vparstatus -p cable2 -v  [Virtual Partition Details]  Name:         cable2  State:        Up  Attributes:   Dynamic,Manual  Kernel Path:  /stand/vmunix  Boot Opts:  [CPU Details]  Min/Max: 1/2  Bound [Path]: 97  Unbound [Path]:   101  [IO Details]     0.8.0.0.8.0.5.0.0.0  BOOT     0.10.0.0                         <-- no tape drive present  [Memory  Details]  Specified [Base  /Range]:            (bytes) (MB)  Total Memory (MB):  1024  # 

The vmunix for cable1 should have in it the device driver necessary to support the tape drive, in this case stape. We know that stape is the driver by issuing an ioscan as shown below:

 cvhdcon3:/ # ioscan -fun | grep tape  tape     0 0/0/1/0.3.0  stape   CLAIMED   DEVICE     HP     C1537A  cvhdcon3:/ # 

The driver for the tape drive should be present in every Virtual Partition that will use it. If your tape drive interface is in a PCI slot that you can move from one vPar to another, you want to have the driver for it in the kernel of every Virtual Partition that will use it. Keep in mind that in order to move the tape drive, its interface will have to be on an LBA that can be moved from one vPar to another. At the time of this writing an LBA can't be shared between vPars. In our case the tape drive is connected to the Core I/O card and won't be moved from cable1 to cable2.

The following listing of /stand/system shows that the stape driver we need for the tape is present:

 cvhdcon3:/ # cat /stand/system  * Drivers and Subsystems  DlkmDrv  GSCtoPCI  PCItoPCI  arp  asio0  asp  autofsc  autox0  bs_osm  btlan  btlan1  c720  cachefsc  cb  cdfs  cifs  clone  core  cxperf  dev_config  dev_olar  devkrs  diag0  diag1  diag2  disc3  dlkm  dlpi  dmem  echo  esctl  esdisk  fcT1  fcT1_cntl  fcT1_fcp  fcms  fcp  fcp_cdio  fcparray  fcpdev  fcpmux  fdc  fddi4  ffs  gelan  hpstreams  i2o_cdio  inet  iomem  iop_drv  ip  kepd  klog  krio  krs  lasi  lba  ldterm  lv  lvm  maclan  netdiag1  netqa  nfs_client  nfs_core  nfs_server  nfsm  nms  nuls  olar_psm  olar_psm_if  pa_generic_psm  pa_psm  pat_psm  pci  pckt  pflop  pipedev  pipemod  prm  ptem  ptm  pts  rawip  rpcmod  sad  sapic  sba  sc  schgr  scsi1  scsi3  sctl  sdisk  sdm  sio  spt  spt0  ssrfc  stape  stcpmap  strlog  strpty_included  strtelnet_included  target  tcp  td  telm  tels  timod  tirdwr  tlclts  tlcots  tlcotsod  token_arp  tun  udp  ufs  uipc  vcn  vcs  ve_psm  ve_psm_driver  vxfs  vxportal  wsio  * Kernel Device info  dump lvol  * Tunable parameters  STRMSGSZ        65535  dnlc_hash_locks 512  maxdsiz_64bit   0X40000000  maxssiz         0X800000  maxssiz_64bit   0X800000  maxswapchunks   2048  maxtsiz         0X4000000  maxtsiz_64bit   0X40000000  nstrpty         60  shmmax          0X4000000  cvhdcon3:/ # 

We could now use the tape drive to perform a backup of cable1. There is detailed information on backup in Chapter 7, including performing a backup using a remote tape drive. The following example shows the fbackup command issued:

 fbackup -0u -f /dev/rmt/0m -g /tmp/backupgraph -I            /tmp/backupindex.`date '+%y%m%d.%H:M'` 2>            /tmp/backup.`date '+%y%m%d.%H:%M'` 

This produces an index file of the backup of /var on cable1 that contains the following entries:

 1024                   1 /  1024                   1 /var  1024                   1 /var/tmp  200                    1 /var/tmp/..fmt  0                      1/var/tmp/aaaa01664  0                      1/var/tmp/aaaa01745  0                      1/var/tmp/aaaa01806  0                      1/var/tmp/aaaa02391  0                      1/var/tmp/cmd_res3036  0                      1/var/tmp/cmd_res4403  1560                   1 /var/tmp/disk_em.fmt  324                    1 /var/tmp/dm_TL_adapter.fmt  1392                   1 /var/tmp/dm_stape.fmt  1241                   1 /var/tmp/ems_inittab.old  28                     1 /var/tmp/envd.action2  28                     1 /var/tmp/envd.action5  200                    1 /var/tmp/fc60mon.fmt  4106                   1 /var/tmp/inetd.conf.old  0                      1/var/tmp/lpmc_em.fmt  96                     1 /var/tmp/ntp  0                      1/var/tmp/oe.config.4525  0                      1/var/tmp/rdskACAa01881  0                      1/var/tmp/rdskQBAa01841  0                      1/var/tmp/rdskSDCa06262  0                      1/var/tmp/rdskSJAa01574  0                      1/var/tmp/rdskUBAa01853  7184                   1 /var/tmp/swagent.log 

If the tape interface were not on the Core I/O card, which is devoted to cable1, we could move the interface from cable1 to cable2, confirm that the driver is in /stand/system, and then backup cable2

Since there are many devices that you may want to move among the vPars running on your system, you want to make sure you have all of the device drivers required to support these devices in your kernel.


       
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    HP-UX Virtual Partitions
    HP-UX Virtual Partitions
    ISBN: 0130352128
    EAN: 2147483647
    Year: 2002
    Pages: 181

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