HPUX : THE AUTO PATH COMMAND-LINE INTERFACE (CLI)

HP Auto Path provides automatic input/output (I/O) path failover, failback,

recovery, and load balancing for host systems configured with multiple host adapters and connections to a disk array.Auto Path provides enhanced data availability with these features:

• automatic path failover to an alternate path

• automatic path recovery after failed path is serviced 

• automatic failback when a path recovers from failure

• dynamic load-balancing over multiple paths

• command-line user interface (CLI) for Auto Path management

• ability to reestablish previous load-balancing policy after reboot


autopath - Secure Path Management Utility.

 DESCRIPTION
      Secure Path product provides the interface to manage and retrieve
      information about the devices that belong to the supported HP
      StorageWorks Active-Active disk arrays.

      autopath is a management utility that provides a command line user
      interface to monitor and manage devices, storage systems, and paths to
      units that belong to the supported HP StorageWorks Active-Active disk
      arrays. Autopath interacts with the 'hpap' Secure Path driver for
      performing these tasks.

      The autopath utility:

      + displays device information including the alternative paths to end
      LUN

      + includes or excludes supported active-active disk arrays from Secure
      Path control

      + includes or excludes supported active-active disk array types from
      Secure Path control

      + adds or deletes devices from Secure Path control

      + restores device paths after their recovery from failures

      + sets options such as load balancing, preferred path and infinite
      retry for supported devices.

      + preserves the array and lun specific persistance settings across
      reboots

      + discovers devices added online

      + sets read optimization for EVA-AA disk array devices. EVA-AA arrays
      include EVA 3000/4000/5000/6000/8000/4100/6100/8100/4400 disk arrays.

      + enables or disables proactive path monitoring for faster recognition
      of failed and recovered paths

      + creates and manages virtual device special files for all Secure Path
      devies
 

through the CLI

The HP Auto Path software performs dynamic load balancing of data flow

through multiple paths. It detects multiple paths to each logical device and

distributes the data load among the paths for optimum performance.

The user interface lets a system administrator define load balancing policies

and preferred paths, and view device path information. Auto Path manages

paths according to the balancing policy, ensuring that no single path is a

performance bottleneck.

The Auto Path command-line interface (CLI) can be used only on hosts

connected to devices with the Auto Path driver installed. The commands

supported by this interface and the syntax are described here:

• autopath display

• autopath help

• autopath recover

• autopath retrieve

• autopath set_lbpolicy

• autopath set_prefpath

 Syntax autopath set_lbpolicy policy path

policy The load balance policy name:

NLB no load balance policy

RR round robin

SQL shortest queue length

SST shortest service time

path The physical device path.

Description The autopath set_lbpolicy command sets the load balance policy for the

specified device path.

Example HP $ autopath set_lbpolicy RR /dev/dsk/c0t0d0

autopath: Load Balance Policy set successfully for /dev/dsk/c0t0d0

HPUX : STRIPED MIRRORS ARE NOT SUPPORTED.

Error :

#-> lvextend -m 1 /dev/vg_jjclglp1/oradat01  /dev/dsk/c82t0d0 /dev/dsk/c82t0d1 /dev/dsk/c82t0d2

Striped mirrors are not supported. To enable mirroring options (-m, -M, -c),

do not specify the striping options (-i, -I) when creating logical volumes.

Extent-based  mirroring in stripe with 10024K size in hpux 11.11 is not supported.

To copy the data  , create a new filesystem and copy the data  offline and start the DB on new file system

 But in case 11.31v

"The following feature is new with the HP-UX 11i v3 release of MirrorDisk/UX:
â ¢ Striped Mirrors: In previous releases, LVM supported a limited extent-based striped mirror
functionality, as described in the lvcreate(1M) manpage. This type of striped mirror required
the stripe size to be a multiple of extent size. In HP-UX 11i v3, LVM supports mirroring of
striped logical volumes with the entire range of stripe sizes. The lvcreate command
options -m and -i/-I can be used together, and the -m option of the lvextend and
lvreduce commands can be applied to striped logical volumes."

 

HPUX : SAS PHYSICAL DISK REPLACEMENT PROCEDURE WITH LVM MIRRORING

SAS Physical Disk Replacement Procedure With LVM Mirroring HP-UX 11.23 Only Send feedback to This technical work is published by Jay Duffield (jay.duffield@hp.com) Overview SAS controllers use a different addressing scheme than parallel SCSI like U320 or SCSI-2.  Where SCSI ID and therefore disk slot numbers were important, SAS uses a unique address of the disks themselves to identify the disks as part of a LUN (logical unit) or an HP-UX special device file like /dev/dsk/c0t0d0.  You can take a disk out of one slot (referred to as bays) and put it in a different slot or bay.  The controller finds it and presents the disk to the O/S with the same special device file.  This does complicate the procedure needed for replacing a failed disk. When a disk fails, and a new disk is put into the same bay that the failed disk came out of, the SAS controller knows it is a different disk by its SAS address.  The O/S driver assigns the next available target for the hardware path (viewed with ioscan) and special device file if insf -e is executed.  The sasmgr(1M) command must be used with the replace_tgt command to replace the special device file used by LVM with the hardware path to the new disk. Running sasmgr replace_tgt is very simple as long as there are no I/Os pending or no I/O drivers that have the special device file open for reading/writing.  This is rarely the case however, and LVM will continue to try to access that special device file waiting for the failed disk to return. You must stop all access to the special device file first by executing pvchange to deactivate that physical volume.  Once the new disk is inserted, create the EFI partitions, and vgcfgrestore the LVM information onto section 2.  As an alternative, you can unmirror the volume group and vgreduce the bad disk from the volume group.  Following is the procedure using pvchange and vgcfgrestore to replace a mirrored boot disk in vg00.  It is noted which steps are not necessary for non-bootable volume groups.  # ioscan -kfnH 0/4/1/0 Class        I  H/W Path        Driver    S/W State   H/W Type     Description =============================================================================== escsi_ctlr   0  0/4/1/0         sasd      CLAIMED     INTERFACE    HP  PCI/PCI-X SAS MPT Adapter                                /dev/sasd0 ext_bus      1  0/4/1/0.0.0     sasd_vbus CLAIMED     INTERFACE    SAS Device Interface target       2  0/4/1/0.0.0.2   tgt       CLAIMED     DEVICE disk         3  0/4/1/0.0.0.2.0   sdisk     CLAIMED     DEVICE       HP      DG072A9BB7                                /dev/dsk/c1t2d0   /dev/rdsk/c1t2d0 target       3  0/4/1/0.0.0.3   tgt       CLAIMED     DEVICE disk         4  0/4/1/0.0.0.3.0   sdisk     CLAIMED     DEVICE       HP      DG072A9BB7                                /dev/dsk/c1t3d0   /dev/rdsk/c1t3d0 target       4  0/4/1/0.0.0.4   tgt       CLAIMED     DEVICE disk         5  0/4/1/0.0.0.4.0   sdisk     CLAIMED     DEVICE       HP      DG036A8B5B                                /dev/dsk/c1t4d0     /dev/rdsk/c1t4d0                                /dev/dsk/c1t4d0s1   /dev/rdsk/c1t4d0s1                                /dev/dsk/c1t4d0s2   /dev/rdsk/c1t4d0s2                                /dev/dsk/c1t4d0s3   /dev/rdsk/c1t4d0s3 target       5  0/4/1/0.0.0.7   tgt       CLAIMED     DEVICE disk         8  0/4/1/0.0.0.7.0   sdisk     CLAIMED     DEVICE       HP      DG036A9BB6                                /dev/dsk/c1t7d0     /dev/rdsk/c1t7d0                                /dev/dsk/c1t7d0s1   /dev/rdsk/c1t7d0s1                                /dev/dsk/c1t7d0s2   /dev/rdsk/c1t7d0s2                                /dev/dsk/c1t7d0s3   /dev/rdsk/c1t7d0s3 target       6  0/4/1/0.0.0.10  tgt       CLAIMED     DEVICE disk        11  0/4/1/0.0.0.10.0  sdisk     CLAIMED     DEVICE       HP      IR Volume                                /dev/dsk/c1t10d0   /dev/rdsk/c1t10d0  # sasmgr get_info -D /dev/sasd0 -q lun=all -q lun_locate /dev/rdsk/c1t2d0          0/4/1/0.0.0.2.0           1     3     OFF /dev/rdsk/c1t3d0          0/4/1/0.0.0.3.0           1     4     OFF /dev/rdsk/c1t4d0          0/4/1/0.0.0.4.0           1     5     OFF /dev/rdsk/c1t7d0          0/4/1/0.0.0.7.0           1     8     OFF RAID VOL ID is 4 : /dev/rdsk/c1t10d0         0/4/1/0.0.0.10.0 Physical disks in volume are :         1     1     OFF           HP            DG072A9BB7         HPD0         1     2     OFF           HP            DG072A9BB7         HPD0 Turn on the disks locator LED to ensure the correct disk is removed. # sasmgr set_attr -D /dev/sasd0 -q lun=/dev/rdsk/c1t4d0 -q locate_led=on Locate LED set to ON. # sasmgr get_info -D /dev/sasd0 -q lun=all -q lun_locate /dev/rdsk/c1t2d0          0/4/1/0.0.0.2.0           1     3     OFF /dev/rdsk/c1t3d0          0/4/1/0.0.0.3.0           1     4     OFF /dev/rdsk/c1t4d0          0/4/1/0.0.0.4.0           1     5     ON /dev/rdsk/c1t7d0          0/4/1/0.0.0.7.0           1     8     OFF RAID VOL ID is 4 : /dev/rdsk/c1t10d0         0/4/1/0.0.0.10.0 Physical disks in volume are :         1     1     OFF           HP            DG072A9BB7         HPD0         1     2     OFF           HP            DG072A9BB7         HPD0   Procedure At this point the disk in bay 5 fails or is pulled out of the server to simulate a failure.  A new disk is inserted in the same bay.  The server should not be rebooted or taken down between the time the disk fails and the time the new disk is inserted.  If the server has been rebooted for any reason, check to be sure you have at least revision B.11.23.03.01 of the SerialSCSI-00 fileset. Click here to jump to the bottom of this document for more information. 1.  Identify the location of the failed disk highlighted in red, the mirror of that disk in blue, and the new replacement disk is in dark red.  Note below that NO_HW indicates a disk that is no longer accessible to the O/S. # ioscan -fnH 0/4/1/0 Class        I  H/W Path        Driver    S/W State   H/W Type     Description =============================================================================== escsi_ctlr   0  0/4/1/0         sasd      CLAIMED     INTERFACE    HP  PCI/PCI-X SAS MPT Adapter                                /dev/sasd0 ext_bus      1  0/4/1/0.0.0     sasd_vbus CLAIMED     INTERFACE    SAS Device Interface target       2  0/4/1/0.0.0.2   tgt       CLAIMED     DEVICE disk         3  0/4/1/0.0.0.2.0   sdisk     CLAIMED     DEVICE       HP      DG072A9BB7                                /dev/dsk/c1t2d0   /dev/rdsk/c1t2d0 target       3  0/4/1/0.0.0.3   tgt       CLAIMED     DEVICE disk         4  0/4/1/0.0.0.3.0   sdisk     CLAIMED     DEVICE       HP      DG072A9BB7                                /dev/dsk/c1t3d0   /dev/rdsk/c1t3d0 target       4  0/4/1/0.0.0.4   tgt       NO_HW       DEVICE disk         5  0/4/1/0.0.0.4.0   sdisk     NO_HW       DEVICE       HP      DG036A8B5B                                /dev/dsk/c1t4d0     /dev/rdsk/c1t4d0                                /dev/dsk/c1t4d0s1   /dev/rdsk/c1t4d0s1                                /dev/dsk/c1t4d0s2   /dev/rdsk/c1t4d0s2                                /dev/dsk/c1t4d0s3   /dev/rdsk/c1t4d0s3 target       5  0/4/1/0.0.0.7   tgt       CLAIMED     DEVICE disk         8  0/4/1/0.0.0.7.0   sdisk     CLAIMED     DEVICE       HP      DG036A9BB6                                /dev/dsk/c1t7d0     /dev/rdsk/c1t7d0                                /dev/dsk/c1t7d0s1   /dev/rdsk/c1t7d0s1                                /dev/dsk/c1t7d0s2   /dev/rdsk/c1t7d0s2                                /dev/dsk/c1t7d0s3   /dev/rdsk/c1t7d0s3 target       6  0/4/1/0.0.0.10  tgt       CLAIMED     DEVICE disk        11  0/4/1/0.0.0.10.0  sdisk     CLAIMED     DEVICE       HP      IR Volume                                /dev/dsk/c1t10d0   /dev/rdsk/c1t10d0 target       7  0/4/1/0.0.0.11  tgt       CLAIMED     DEVICE disk        12  0/4/1/0.0.0.11.0  sdisk     CLAIMED     DEVICE       HP      DG036A8B5B # sasmgr get_info -D /dev/sasd0 -q lun=all -q lun_locate /dev/rdsk/c1t2d0          0/4/1/0.0.0.2.0           1     3     OFF /dev/rdsk/c1t3d0          0/4/1/0.0.0.3.0           1     4     OFF /dev/rdsk/c1t7d0          0/4/1/0.0.0.7.0           1     8     OFF RAID VOL ID is 4 : /dev/rdsk/c1t10d0         0/4/1/0.0.0.10.0 Physical disks in volume are :         1     1     OFF           HP            DG072A9BB7         HPD0         1     2     OFF           HP            DG072A9BB7         HPD0 # sasmgr get_info -D /dev/sasd0 -q raid Thu Dec 14 14:59:28 2006 ---------- PHYSICAL DRIVES ---------- LUN dsf              SAS Address          Enclosure    Bay      Size(MB) /dev/rdsk/c1t2d0     0x500000e012691cb2     1            3      70007 /dev/rdsk/c1t3d0     0x500000e0126926d2     1            4      70007 /dev/rdsk/c1t7d0     0x500000e01263fcc2     1            8      34732 ---------- LOGICAL DRIVE 4 ---------- Raid Level                                         : RAID 1 Volume sas address                                 : 0x611d224fa01c82 Device Special File                                : /dev/rdsk/c1t10d0 Raid State                                         : OPTIMAL Raid Status Flag                                   : ENABLED Raid Size                                          : 34000 Rebuild Rate                                       : 20.00 % Rebuild Progress                                   : 100.00 % Participating Physical Drive(s) : SAS Address         Enc   Bay   Size(MB)      Type            State 0x500000e01268e312   1     1    70007         SECONDARY       ONLINE 0x500000e012691ee2   1     2    70007         PRIMARY         ONLINE # sasmgr replace_tgt -D /dev/sasd0 -q old_dev=/dev/dsk/c1t4d0 -q new_tgt_hwpath=0/4/1/0.0.0.11.0 WARNING: This is a DESTRUCTIVE operation. This might result in failure of current I/O requests. Do you want to continue ?(y/n) [n]... ERROR: Unable to replace target: Device busy 2.  The reason this command fails is because LVM is still trying to access /dev/dsk/c1t4d0s2, since it is part of vg00. # vgdisplay -v vg00 --- Volume groups --- VG Name                     /dev/vg00 VG Write Access             read/write VG Status                   available Max LV                      255 Cur LV                      8 Open LV                     8 Max PV                      16 Cur PV                      2 Act PV                      2 Max PE per PV               4238 VGDA                        4 PE Size (Mbytes)            8 Total PE                    8456 Alloc PE                    6008 Free PE                     2448 Total PVG                   0 Total Spare PVs             0 Total Spare PVs in use      0    --- Logical volumes ---    LV Name                     /dev/vg00/lvol1    LV Status                   available/stale    LV Size (Mbytes)            304    Current LE                  38    Allocated PE                76    Used PV                     2    LV Name                     /dev/vg00/lvol2    LV Status                   available/syncd    LV Size (Mbytes)            4096    Current LE                  512    Allocated PE                1024    Used PV                     2    LV Name                     /dev/vg00/lvol3    LV Status                   available/stale    LV Size (Mbytes)            560    Current LE                  70    Allocated PE                140    Used PV                     2    LV Name                     /dev/vg00/lvol4    LV Status                   available/stale    LV Size (Mbytes)            200    Current LE                  25    Allocated PE                50    Used PV                     2    LV Name                     /dev/vg00/lvol5    LV Status                   available/stale    LV Size (Mbytes)            24    Current LE                  3    Allocated PE                6    Used PV                     2    LV Name                     /dev/vg00/lvol6    LV Status                   available/stale    LV Size (Mbytes)            6568    Current LE                  821    Allocated PE                1642    Used PV                     2    LV Name                     /dev/vg00/lvol7    LV Status                   available/stale    LV Size (Mbytes)            6584    Current LE                  823    Allocated PE                1646    Used PV                     2    LV Name                     /dev/vg00/lvol8    LV Status                   available/stale    LV Size (Mbytes)            5696    Current LE                  712    Allocated PE                1424    Used PV                     2    --- Physical volumes ---    PV Name                     /dev/dsk/c1t7d0s2    PV Status                   available    Total PE                    4228    Free PE                     1224    Autoswitch                  On    PV Name                     /dev/dsk/c1t4d0s2    PV Status                   unavailable    Total PE                    4228    Free PE                     1224    Autoswitch                  On 3.  The "PV Status" shows it as "unavailable," but LVM is still waiting for that disk to return.  Therefore, it is necessary to stop access to the special device file before the sasmgr replace_tgt command will work.  First pvchange -a n /dev/dsk/c1t4d0s2 to deactivate the physical volume.  Then use the sasmgr replace_tgt command to switch the special device file to the new disk. # pvchange -a n /dev/dsk/c1t4d0s2 Warning: Detaching a physical volume reduces the availability of data within the logical volumes residing on that disk. Prior to detaching a physical volume or the last available path to it, verify that there are alternate copies of the data available on other disks in the volume group. If necessary, use pvchange(1M) to reverse this operation. Physical volume "/dev/dsk/c1t4d0s2" has been successfully changed. # vgdisplay -v vg00 --- Volume groups --- VG Name                     /dev/vg00 VG Write Access             read/write VG Status                   available Max LV                      255 Cur LV                      8 Open LV                     8 Max PV                      16 Cur PV                      2 Act PV                      1 Max PE per PV               4238 VGDA                        2 PE Size (Mbytes)            8 Total PE                    4228 Alloc PE                    3004 Free PE                     1224 Total PVG                   0 Total Spare PVs             0 Total Spare PVs in use      0    --- Logical volumes ---    LV Name                     /dev/vg00/lvol1    LV Status                   available/syncd    LV Size (Mbytes)            304    Current LE                  38    Allocated PE                38    Used PV                     2    LV Name                     /dev/vg00/lvol2    LV Status                   available/syncd    LV Size (Mbytes)            4096    Current LE                  512    Allocated PE                512    Used PV                     2    LV Name                     /dev/vg00/lvol3    LV Status                   available/syncd    LV Size (Mbytes)            560    Current LE                  70    Allocated PE                70    Used PV                     2    LV Name                     /dev/vg00/lvol4    LV Status                   available/syncd    LV Size (Mbytes)            200    Current LE                  25    Allocated PE                25    Used PV                     2    LV Name                     /dev/vg00/lvol5    LV Status                   available/syncd    LV Size (Mbytes)            24    Current LE                  3    Allocated PE                3    Used PV                     2    LV Name                     /dev/vg00/lvol6    LV Status                   available/syncd    LV Size (Mbytes)            6568    Current LE                  821    Allocated PE                821    Used PV                     2    LV Name                     /dev/vg00/lvol7    LV Status                   available/syncd    LV Size (Mbytes)            6584    Current LE                  823    Allocated PE                823    Used PV                     2    LV Name                     /dev/vg00/lvol8    LV Status                   available/syncd    LV Size (Mbytes)            5696    Current LE                  712    Allocated PE                712    Used PV                     2    --- Physical volumes ---    PV Name                     /dev/dsk/c1t7d0s2    PV Status                   available    Total PE                    4228    Free PE                     1224    Autoswitch                  On      PV Name                     /dev/dsk/c1t4d0s2    PV Status                   unavailable    Total PE                    4228    Free PE                     1224    Autoswitch                  On   4.  Now /dev/dsk/c1t4d0 is free, and we can assign the new disk to special device file /dev/dsk/c1t4d0.  Be sure you do not use the "-k" option to ioscan, so that the hardware is rescanned for changes. # sasmgr replace_tgt -D /dev/sasd0 -q old_dev=/dev/dsk/c1t4d0 -q new_tgt_hwpath=0/4/1/0.0.0.11.0 WARNING: This is a DESTRUCTIVE operation. This might result in failure of current I/O requests. Do you want to continue ?(y/n) [n]... LUN has been replaced with new Target. # ioscan -fnC disk Class        I  H/W Path        Driver         S/W State   H/W Type     Description ==================================================================================== disk         0  0/0/2/1.0.16.0.0  sdisk          CLAIMED     DEVICE       TEAC    DV-28E-N                                /dev/dsk/c0t0d0   /dev/rdsk/c0t0d0 disk         3  0/4/1/0.0.0.2.0   sdisk          CLAIMED     DEVICE       HP      DG072A9BB7                                /dev/dsk/c1t2d0   /dev/rdsk/c1t2d0 disk         4  0/4/1/0.0.0.3.0   sdisk          CLAIMED     DEVICE       HP      DG072A9BB7                                /dev/dsk/c1t3d0   /dev/rdsk/c1t3d0 disk         5  0/4/1/0.0.0.4.0   sdisk          CLAIMED     DEVICE       HP      DG036A8B5B                                /dev/dsk/c1t4d0     /dev/rdsk/c1t4d0                                /dev/dsk/c1t4d0s1   /dev/rdsk/c1t4d0s1                                /dev/dsk/c1t4d0s2   /dev/rdsk/c1t4d0s2                                /dev/dsk/c1t4d0s3   /dev/rdsk/c1t4d0s3 disk         8  0/4/1/0.0.0.7.0   sdisk          CLAIMED     DEVICE       HP      DG036A9BB6                                /dev/dsk/c1t7d0     /dev/rdsk/c1t7d0                                /dev/dsk/c1t7d0s1   /dev/rdsk/c1t7d0s1                                /dev/dsk/c1t7d0s2   /dev/rdsk/c1t7d0s2                                /dev/dsk/c1t7d0s3   /dev/rdsk/c1t7d0s3 disk        11  0/4/1/0.0.0.10.0  sdisk          CLAIMED     DEVICE       HP      IR Volume                                /dev/dsk/c1t10d0   /dev/rdsk/c1t10d0 disk        12  0/4/1/0.0.0.11.0  sdisk          NO_HW       DEVICE       HP      DG036A8B5B Notice that the S/W State of the H/W Path 0/4/1/0.0.0.4.0 changed to CLAIMED, and the S/W State of the H/W Path 0/4/1/0.0.0.11.0 changed to NO_H/W. The hardware path 0/4/1/0.0.0.11.0 will remain in the ioscan output until the next reboot. 5.  Now you must restore LVM mirroring to the new disk.  If this is a bootable volume group, it involves creating the EFI partitions and formatting partition 1; changing the autoboot file if this was the mirror (not necessary for the primary disk); and, restoring the LVM information to section 2 of the disk. If your volume group is NOT a bootable volume group like vg00, skip to step 12. Note: Only necessary for vg00.  This confirms that no EFI partitions exist on the new disk. # idisk /dev/rdsk/c1t4d0 idisk version: 1.31 idisk: Primary partition information not valid. Run idisk with -r option to restore. 6.  Note: Only necessary for vg00.  Create a template file of the EFI partition parameters. # cat <<EOF > /tmp/partitionfile > 3 > EFI 500MB > HPUX 100% > HPSP 400MB > EOF 7.  Note: Only necessary for vg00.  Create the EFI partitions using the template. # idisk -wf /tmp/partitionfile /dev/rdsk/c1t4d0 idisk version: 1.31 ********************** WARNING *********************** If you continue you may destroy all data on this disk. Do you wish to continue(yes/no)? yes EFI Primary Header:         Signature                 = EFI PART         Revision                  = 0x10000         HeaderSize                = 0x5c         HeaderCRC32               = 0x39aa64b6         MyLbaLo                   = 0x1         AlternateLbaLo            = 0x43d671f         FirstUsableLbaLo          = 0x22         LastUsableLbaLo           = 0x43d66fc         Disk GUID                 = dfdf740c-8bb1-11db-8001-d6217b60e588         PartitionEntryLbaLo       = 0x2         NumberOfPartitionEntries  = 0xc         SizeOfPartitionEntry      = 0x80         PartitionEntryArrayCRC32  = 0x60502b29   Primary Partition Table (in 512 byte blocks):     Partition 1 (EFI):         Partition Type GUID       = c12a7328-f81f-11d2-ba4b-00a0c93ec93b         Unique Partition GUID     = dfdf75a6-8bb1-11db-8002-d6217b60e588         Starting Lba              = 0x22         Ending Lba                = 0xfa021     Partition 2 (HP-UX):         Partition Type GUID       = 75894c1e-3aeb-11d3-b7c1-7b03a0000000         Unique Partition GUID     = dfdf75ec-8bb1-11db-8003-d6217b60e588         Starting Lba              = 0xfa022         Ending Lba                = 0x430e6fb     Partition 3 (HPSP):         Partition Type GUID       = e2a1e728-32e3-11d6-a682-7b03a0000000         Unique Partition GUID     = dfdf7614-8bb1-11db-8004-d6217b60e588         Starting Lba              = 0x430e6fc         Ending Lba                = 0x43d66fb EFI Alternate Header:         Signature                 = EFI PART         Revision                  = 0x10000         HeaderSize                = 0x5c         HeaderCRC32               = 0xedbd53ee         MyLbaLo                   = 0x43d671f         AlternateLbaLo            = 0x1         FirstUsableLbaLo          = 0x22         LastUsableLbaLo           = 0x43d66fc         Disk GUID                 = dfdf740c-8bb1-11db-8001-d6217b60e588         PartitionEntryLbaLo       = 0x43d66fe         NumberOfPartitionEntries  = 0xc         SizeOfPartitionEntry      = 0x80         PartitionEntryArrayCRC32  = 0x60502b29   Alternate Partition Table (in 512 byte blocks):     Partition 1 (EFI):         Partition Type GUID       = c12a7328-f81f-11d2-ba4b-00a0c93ec93b         Unique Partition GUID     = dfdf75a6-8bb1-11db-8002-d6217b60e588         Starting Lba              = 0x22         Ending Lba                = 0xfa021     Partition 2 (HP-UX):         Partition Type GUID       = 75894c1e-3aeb-11d3-b7c1-7b03a0000000         Unique Partition GUID     = dfdf75ec-8bb1-11db-8003-d6217b60e588         Starting Lba              = 0xfa022         Ending Lba                = 0x430e6fb     Partition 3 (HPSP):         Partition Type GUID       = e2a1e728-32e3-11d6-a682-7b03a0000000         Unique Partition GUID     = dfdf7614-8bb1-11db-8004-d6217b60e588         Starting Lba              = 0x430e6fc         Ending Lba                = 0x43d66fb Legacy MBR (MBR Signatures in little endian):    MBR Signature = 0x8a73dfdf Protective MBR 8.  Now the EFI partition is displayed when the ioscan -e option is used. If the system was rebooted before running the replace_tgt command, it will also be necessary to run "insf -eC disk" to create the special device files for the additional disk sections. # ioscan -fneC disk Class        I  H/W Path        Driver         S/W State   H/W Type     Description ==================================================================================== disk         0  0/0/2/1.0.16.0.0  sdisk          CLAIMED     DEVICE       TEAC    DV-28E-N                                /dev/dsk/c0t0d0   /dev/rdsk/c0t0d0 disk         3  0/4/1/0.0.0.2.0   sdisk          CLAIMED     DEVICE       HP      DG072A9BB7                                /dev/dsk/c1t2d0   /dev/rdsk/c1t2d0         Acpi(HWP0002,PNP0A03,400)/Pci(1|0)/Sas(Addr500000E012691CB2, Lun0) disk         4  0/4/1/0.0.0.3.0   sdisk          CLAIMED     DEVICE       HP      DG072A9BB7                                /dev/dsk/c1t3d0   /dev/rdsk/c1t3d0         Acpi(HWP0002,PNP0A03,400)/Pci(1|0)/Sas(Addr500000E0126926D2, Lun0) disk         5  0/4/1/0.0.0.4.0   sdisk          CLAIMED     DEVICE       HP      DG036A8B5B                                /dev/dsk/c1t4d0     /dev/rdsk/c1t4d0                                /dev/dsk/c1t4d0s1   /dev/rdsk/c1t4d0s1                                /dev/dsk/c1t4d0s2   /dev/rdsk/c1t4d0s2                                /dev/dsk/c1t4d0s3   /dev/rdsk/c1t4d0s3         Acpi(HWP0002,PNP0A03,400)/Pci(1|0)/Sas(Addr500000E011A8D382, Lun0)/HD(Part1,SigDFDF75A6-8BB1-11DB-8002-D6217B60E588)/\EFI\HPUX\HPUX.EFI disk         8  0/4/1/0.0.0.7.0   sdisk          CLAIMED     DEVICE       HP      DG036A9BB6                                /dev/dsk/c1t7d0     /dev/rdsk/c1t7d0                                /dev/dsk/c1t7d0s1   /dev/rdsk/c1t7d0s1                                /dev/dsk/c1t7d0s2   /dev/rdsk/c1t7d0s2                                /dev/dsk/c1t7d0s3   /dev/rdsk/c1t7d0s3         Acpi(HWP0002,PNP0A03,400)/Pci(1|0)/Sas(Addr500000E01263FCC2, Lun0)/HD(Part1,SigCFBF8B12-42CC-11DB-8002-D6217B60E588)/\EFI\HPUX\HPUX.EFI disk        11  0/4/1/0.0.0.10.0  sdisk          CLAIMED     DEVICE       HP      IR Volume                                /dev/dsk/c1t10d0   /dev/rdsk/c1t10d0         Acpi(HWP0002,PNP0A03,400)/Pci(1|0)/Scsi(Pun4, Lun0) disk        12  0/4/1/0.0.0.11.0  sdisk          NO_HW       DEVICE       HP      DG036A8B5B 9.  Note: Only necessary for vg00.  Format EFI partition #1. # efi_fsinit -d /dev/rdsk/c1t4d0s1 10. Note: Only necessary for vg00.  Copy the bootable files to the EFI partition. # mkboot -e -l /dev/rdsk/c1t4d0 11. Note: Only necessary for the mirrored disk of vg00 (listed as PV2 in lvdisplay -v output).  Create and copy the autofile to the EFI partition. # echo "boot vmunix -lq" > /tmp/auto.lq # efi_cp -d /dev/rdsk/c1t4d0s1 /tmp/auto.lq /EFI/HPUX/AUTO # efi_ls -d /dev/rdsk/c1t4d0s1 /EFI/HPUX FileName                             Last Modified             Size .                                     12/14/2006                  0 ..                                    12/14/2006                  0 HPUX.EFI                              12/14/2006             644703 NBP.EFI                               12/14/2006              24576 AUTO                                  12/14/2006                 16 total space 523251712 bytes, free space 519856128 bytes 12. Restore the LVM information to section 2 of the disk with vgcfgrestore.  Section 2 is only used for EFI partitioned disks.  If this is a non-bootable, data volume group disk, the special device file to use would simply be /dev/dsk/c1t4d0. # vgcfgrestore -n vg00 /dev/rdsk/c1t4d0s2 Volume Group configuration has been restored to /dev/rdsk/c1t4d0s2 # pvchange -a y /dev/dsk/c1t4d0s2 Physical volume "/dev/dsk/c1t4d0s2" has been successfully changed. 13. Wait a couple minutes to give /dev/vg00/lvol1 a chance to sync. (reimage the mirror), and vgdisplay now shows that volume as "available/syncd" while the rest are still "available/stale" until they have been sync'd.  You must wait until all logical volumes are sync'd before attempting to reboot to test the mirror boot disk. # vgdisplay -v vg00 --- Volume groups --- VG Name                     /dev/vg00 VG Write Access             read/write VG Status                   available Max LV                      255 Cur LV                      8 Open LV                     8 Max PV                      16 Cur PV                      2 Act PV                      2 Max PE per PV               4238 VGDA                        4 PE Size (Mbytes)            8 Total PE                    8456 Alloc PE                    3004 Free PE                     5452 Total PVG                   0 Total Spare PVs             0 Total Spare PVs in use      0    --- Logical volumes ---    LV Name                     /dev/vg00/lvol1    LV Status                   available/syncd    LV Size (Mbytes)            304    Current LE                  38    Allocated PE                38    Used PV                     2    LV Name                     /dev/vg00/lvol2    LV Status                   available/stale    LV Size (Mbytes)            4096    Current LE                  512  Allocated PE                  512    Used PV                     2    LV Name                     /dev/vg00/lvol3    LV Status                   available/stale    LV Size (Mbytes)            560    Current LE                  70  Allocated PE                  70    Used PV                     2    LV Name                     /dev/vg00/lvol4    LV Status                   available/stale    LV Size (Mbytes)            200    Current LE                  25    Allocated PE                25    Used PV                     2    LV Name                     /dev/vg00/lvol5    LV Status                   available/stale    LV Size (Mbytes)            24    Current LE                  3    Allocated PE                3    Used PV                     2    LV Name                     /dev/vg00/lvol6    LV Status                   available/stale    LV Size (Mbytes)            6568    Current LE                  821    Allocated PE                821    Used PV                     2    LV Name                     /dev/vg00/lvol7    LV Status                   available/stale    LV Size (Mbytes)            6584    Current LE                  823    Allocated PE                823    Used PV                     2    LV Name                     /dev/vg00/lvol8    LV Status                   available/stale    LV Size (Mbytes)            5696    Current LE                  712    Allocated PE                712    Used PV                     2    --- Physical volumes ---    PV Name                     /dev/dsk/c1t7d0s2    PV Status                   available    Total PE                    4228    Free PE                     1224    Autoswitch                  On    PV Name                     /dev/dsk/c1t4d0s2    PV Status                   available    Total PE                    4228    Free PE                     1224    Autoswitch                  On 14. Note: Only necessary for vg00.  Rewrite the boot information to the EFI Boot Menu so the system will be able to boot from the new path. # setboot Primary bootpath : 0/4/1/0.0.0.7.0 HA Alternate bootpath : <none> Alternate bootpath : <none> Autoboot is ON (enabled) # setboot -h 0/4/1/0.0.0.4.0 # setboot Primary bootpath : 0/4/1/0.0.0.7.0 HA Alternate bootpath : 0/4/1/0.0.0.4.0 Alternate bootpath : 0/0/2/0 Autoboot is ON (enabled) 15. Note: Only necessary for vg00.  After all mirrored volumes are sync'd, reboot from the new disk to make sure everything works.  Interrupt the auto boot process and select the Alternate path from the EFI Boot Menu. # cd / # shutdown -r 0 SHUTDOWN PROGRAM 12/14/06 16:48:59 EST Broadcast Message from LOGIN (console) Thu Dec 14 16:48:59... SYSTEM BEING BROUGHT DOWN NOW ! ! ! . . . Loading.: HP-UX HA Alternate Boot: 0/4/1/0.0.0.4.0 Starting: HP-UX HA Alternate Boot: 0/4/1/0.0.0.4.0 (C) Copyright 1999-2006 Hewlett-Packard Development Company, L.P. All rights reserved HP-UX Boot Loader for IPF  --  Revision 2.028 Press Any Key to interrupt Autoboot \EFI\HPUX\AUTO ==> boot vmunix -lq Seconds left till autoboot -   0 16. Note: Only necessary for vg00.  The boot device is listed in /var/adm/syslog/syslog.log, so confirm that the system was booted from the new path. # grep "Boot device" /var/adm/syslog/syslog.log Dec 14 16:53:40 hprx6600 vmunix: Boot device's HP-UX HW path is: 0/4/1/0.0.0.4.0 # sasmgr get_info -D /dev/sasd0 -q raid Thu Dec 14 16:56:20 2006 ---------- PHYSICAL DRIVES ---------- LUN dsf              SAS Address          Enclosure    Bay      Size(MB) /dev/rdsk/c1t2d0     0x500000e012691cb2     1            3      70007 /dev/rdsk/c1t3d0     0x500000e0126926d2     1            4      70007 /dev/rdsk/c1t4d0     0x500000e011a8d382     1            5      34732 /dev/rdsk/c1t7d0     0x500000e01263fcc2     1            8      34732 ---------- LOGICAL DRIVE 4 ---------- Raid Level                                         : RAID 1 Volume sas address                                 : 0x611d224fa01c82 Device Special File                                : /dev/rdsk/c1t10d0 Raid State                                         : OPTIMAL Raid Status Flag                                   : ENABLED Raid Size                                          : 34000 Rebuild Rate                                       : 20.00 % Rebuild Progress                                   : 100.00 % Participating Physical Drive(s) : SAS Address         Enc   Bay   Size(MB)      Type            State 0x500000e01268e312   1     1    70007         SECONDARY       ONLINE 0x500000e012691ee2   1     2    70007         PRIMARY         ONLINE   End of Procedure If the server has been rebooted for any reason, the special device file is stale and is no longer visible with ioscan, and the sasmgr replace_tgt will not work unless you have at least B.11.23.03.01 of the driver released January 2007.  Use swlist to check the software driver revision, and upgrade to B.11.23.03.01 or later. # swlist -l bundle CommonIO # Initializing... # Contacting target "hprx6600"... # # Target: hprx6600:/ #   CommonIO B.11.23.03.01 CommonIO   # swlist -l bundle SerialSCSI-00 # Initializing... # Contacting target "hprx6600"... # # Target: hprx6600:/ #   SerialSCSI-00 B.11.23.03.01 PCI-X SerialSCSI   This software can be obtained free from http://software.hp.com/.   >>HP-UX 11i general HP-UX Common Bundle HP-UX Serial SCSI Driver Use swinstall(1M) to install the CommonIO bundle first which does not require a reboot.  Then install the SerialSCSI-00 driver which does require a reboot.  Once this is completed the sasmgr replace_tgt command will work, and the rest of the procedure can be followed from step 3.   Last updated: February 5, 2007 [Top] This page has been accessed times since December 18, 2006