topic Re: replace disk on hpux in Operating System - HP-UX

replace disk on hpux

Imad_blg — Tue, 30 Nov 2021 13:16:13 GMT

hello,

i should to change disk on hpux the disk is mirrored & alternate boot I was going to do the following:

1- initialize boot information on the replacement disk.
Save the hardware paths to the disk.
Run the ioscan command and note the hardware paths of the failed disk as follows:

# pvchange -a N /dev/ddsk/c3t2d0
power off the system to replace disk

Notify the mass storage subsystem that the disk has been replaced.
# scsimgr replace_wwid –D /dev/dsk/c3t2d0

# vi /tmp/partitionfile
3
EFI 500MB
HPUX 100%
HPSP 400MB

Use idisk(1M) command to partition the disk according to this file:

# idisk -wf /tmp/partitionfile /dev/dsk/c3t2d0
idisk version: 1.2
********************** WARNING ***********************
If you continue you may destroy all data on this disk.
Do you wish to continue(yes/no)? yes

- Create the new device files for the new partitions (c3t2d0_p1,_p2_p3)
# insf -e –Cdisk

Now assign the old instance number to the replacement disk.

# io_redirect_dsf -d /dev/dsk/c3t2d0 -n /dev/dsk/(new disk)
Use efi_fsinit(1M) to initialize the FAT filesystem on the EFI partition:

# efi_fsinit -d /dev/dsk/c3t2d0

# mkboot -e -l /dev/dsk/c3t2d0
# efi_ls -d /dev/dsk/c3t2d0

# efi_cp -d /dev/dsk/c3t2d0_p1 -u /EFI/HPUX/AUTO /tmp/x
# cat /tmp/x
boot vmunix

# mkboot -a "boot vmunix -lq" /dev/dsk/c3t2d0
# mkboot -a "boot vmunix -lq" /dev/dsk/c3t2d0

# vgcfgrestore -n /dev/vg00 /dev/dsk/c3t2d0
pvchange –a y /dev/dsk/c3t2d0_p2

# vgchange -a y /dev/vg00
# cd /tmp
# nohup vgsync /dev/vg00 &
# lvlnboot -v

Re: replace disk on hpux

mbarnwal — Wed, 10 Nov 2021 01:18:16 GMT

Hi,

Do you have legacy DSF (/dev/dsk/cXtXdXs2) or agile dsf (/dev/disk/diskXX_p2) in vg00?

The procedure you mentioned is correct but the commands are mixed up to use legacy/agile dsf.

e.g.

Unless you have a PA-RISC server, the boot disk's s2 partition would be in vg00

So instead of:

pvchange -a N /dev/dsk/c3t2d0

It would be:

pvchange -a N /dev/dsk/c3t2d0s2

Then scsimgr replace_wwid would work on agile dsf:

e.g.

To validate replacement of disk0 and re-assign its DSF to the replacing LUN:

# scsimgr replace_wwid -D /dev/rdisk/disk0 dsf

efi_fsinit is not needed as mkboot -e would format the EFI partiton, moreover with efi_fsinit, the EFI partition must be mentioned:

e.g.

# efi_fsinit -d /dev/dsk/c3t2d0s1

Few other corrections:

From:

# vgcfgrestore -n /dev/vg00 /dev/dsk/c3t2d0
# pvchange –a y /dev/dsk/c3t2d0_p2

To:'

# vgcfgrestore -n /dev/vg00 /dev/dsk/c3t2d0s2
# pvchange –a y /dev/dsk/c3t2d0s2

If you are using agile DSF, you can follow this document:

https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=c03108989

Regards

Manish

Re: replace disk on hpux

Imad_blg — Wed, 10 Nov 2021 13:13:42 GMT

thank u manish for your reply.

the link that u shared with me isn't available.

this is the output of ioscan

# ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
====================================================================================
disk 5 0/0/2/1.0.16.0.0 sdisk CLAIMED DEVICE TEAC DVD-ROM DW-224E V
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
disk 1 0/1/1/0.0.0.0.0 sdisk CLAIMED DEVICE HP DH0072FAQRD
/dev/dsk/c3t0d0 /dev/dsk/c3t0d0s3 /dev/rdsk/c3t0d0s2
/dev/dsk/c3t0d0s1 /dev/rdsk/c3t0d0 /dev/rdsk/c3t0d0s3
/dev/dsk/c3t0d0s2 /dev/rdsk/c3t0d0s1
disk 2 0/1/1/0.0.0.1.0 sdisk CLAIMED DEVICE HP DH0072FAQRD
/dev/dsk/c3t1d0 /dev/rdsk/c3t1d0
disk 3 0/1/1/0.0.0.2.0 sdisk CLAIMED DEVICE HP DH0072FAQRD
/dev/dsk/c3t2d0 /dev/dsk/c3t2d0s3 /dev/rdsk/c3t2d0s2
/dev/dsk/c3t2d0s1 /dev/rdsk/c3t2d0 /dev/rdsk/c3t2d0s3
/dev/dsk/c3t2d0s2 /dev/rdsk/c3t2d0s1
disk 4 0/1/1/0.0.0.3.0 sdisk CLAIMED DEVICE HP DH0072FAQRD
/dev/dsk/c3t3d0 /dev/rdsk/c3t3d0

Re: replace disk on hpux

mbarnwal — Thu, 11 Nov 2021 01:11:15 GMT

Hi,

So its clear that you are not using a PA-RISC server since the boot disk has s1/s2/s3 partitions.

You can use "vgdisplay -v vg00" or "lvmadm -l" to see if vg00 has legacy dsf (/dev/dsk/cXtXdXs2) or agile/persistent DSF (/dev/disk/diskXX_p2). The steps differ a bit.

You may refer following link which has different steps to be used based on your config:

http://wiki-ux.info/wiki/How_to_replace_a_LVM_mirror_boot_disk

Regards

Manish

Re: replace disk on hpux

Imad_blg — Fri, 12 Nov 2021 09:14:32 GMT

this is the output of vgdisplay and setboot.

===============================================
===============================================
# vgdisplay -v
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- 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 4
Act PV 3
Max PE per PV 4384
VGDA 6
PE Size (Mbytes) 16
Total PE 13066
Alloc PE 8098
Free PE 4968
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Logical volumes ---
LV Name /dev/vg00/lvol1
LV Status available/stale
LV Size (Mbytes) 1792
Current LE 112
Allocated PE 224
Used PV 1

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
LV Name /dev/vg00/lvol2
LV Status available/stale
LV Size (Mbytes) 32000
Current LE 2000
Allocated PE 4000
Used PV 1

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
LV Name /dev/vg00/lvol3
LV Status available/stale
LV Size (Mbytes) 1024
Current LE 64
Allocated PE 128
Used PV 1

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
LV Name /dev/vg00/lvol4
LV Status available/stale
LV Size (Mbytes) 4000
Current LE 250
Allocated PE 500
Used PV 1

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
LV Name /dev/vg00/lvol5
LV Status available/stale
LV Size (Mbytes) 30000
Current LE 1875
Allocated PE 3750
Used PV 1

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
LV Name /dev/vg00/lvol6
LV Status available/stale
LV Size (Mbytes) 2512
Current LE 157
Allocated PE 314
Used PV 3

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
LV Name /dev/vg00/lvol7
LV Status available/syncd
LV Size (Mbytes) 8000
Current LE 500
Allocated PE 1000
Used PV 2

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
LV Name /dev/vg00/lvol8
LV Status available/syncd
LV Size (Mbytes) 20000
Current LE 1250
Allocated PE 2500
Used PV 2

--- Physical volumes ---
PV Name /dev/dsk/c3t0d0s2
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
PV Status available
Total PE 4318
Free PE 0
Autoswitch On
Proactive Polling On

PV Name /dev/dsk/c3t1d0
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
PV Status available
Total PE 4374
Free PE 2484
Autoswitch On
Proactive Polling On

PV Name /dev/dsk/c3t3d0
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t2d0s2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
PV Status available
Total PE 4374
Free PE 2484
Autoswitch On
Proactive Polling On

# setboot
Primary bootpath : 0/1/1/0.0.0.0.0
HA Alternate bootpath : <none>
Alternate bootpath : 0/1/1/0.0.0.2.0
==============================================
==============================================
the server is HP integrity RX2660,
the disk failure is the alternat so i will use this path 0/1/1/0.0.0.2.0
i'm going to do the following:

# shutdown –ry 0
replace the disk

recreate the device files for EFI and OS partitions on the new disk:

# mksf –H 0/1/1/0.0.0.2.0 –s 1
# mksf –H 0/1/1/0.0.0.2.0 –s 2
# mksf –H 0/1/1/0.0.0.2.0 –s 3
# mksf –H 0/1/1/0.0.0.2.0 -r –s 1
# mksf –H 0/1/1/0.0.0.2.0 -r –s 2
# mksf –H 0/1/1/0.0.0.2.0 -r –s 3

Create the EFI and OS partititions using an IPF partition description file.
# cat >> /tmp/idf << EOF
3
EFI 500MB
HPUX 100%
HPSP 400MB
EOF

Use idisk to setup the disk partitioning using the file created above:

# idisk -wf /tmp/idf /dev/rdsk/c3t2d0

kboot to format and populate the newly created EFI partition:

# mkboot -e -l /dev/dsk/c3t2d0

Change the AUTO file contents to the proper mode:

A) Primary boot disk.

# cat >> /tmp/auto << EOF
boot vmunix
EOF

# efi_cp –d /dev/rdsk/c3t2d0s1 /tmp/auto /efi/hpux/auto

B) Alternate boot disk.

# cat >> /tmp/auto << EOF
boot vmunix –lq
EOF

# efi_cp –d /dev/rdsk/c3t2d0s1 /tmp/auto /efi/hpux/auto

11. Restore the LVM reserved areas (PVRA/VGRA):

# vgcfgrestore –n vg00 /dev/rdsk/c3t2d0s2

12. Reactivate the volume group to attach the physical volume.

# vgchange –a y vgXX

Note: In case that the volume group don’t start to synchronize the logical volumes automatically, you can force synchronization with:

# vgsync vgXX

13. Use lvlnboot to ensure that the LVM logical volumes are prepared to be root, primary swap or dump volume.

# lvlnboot -R
# lvlnboot -v

Re: replace disk on hpux

mbarnwal — Sat, 13 Nov 2021 02:00:55 GMT

Hi,

Since you mentioned rx2660, you may not need reboot and everything can be done online.

In rx2660, the local disks are attached to a SAS controller and the disks can be hot-plugged.

Refer "Integrity (Itanium) - SAS Disk Replacement" section of the document I shared earlier:

http://wiki-ux.info/wiki/How_to_replace_a_LVM_mirror_boot_disk#Integrity_.28Itanium.29_-_SAS_Disk_Replacement

Regards

Manish

Re: replace disk on hpux

Imad_blg — Sat, 13 Nov 2021 10:22:46 GMT

hi manish,

but in my case I don't have a sas controller. and and the color on the disks isn't purple it's pink and as i know the pink color isn't hot-swappable.

BR.

Re: replace disk on hpux

Torsten. — Mon, 15 Nov 2021 17:18:04 GMT

You have a SAS controller for sure.

It is either a LSI SAS controller or an optional Smartarray P400.

Example:

escsi_ctlr 0 0/1/1/0 sasd CLAIMED INTERFACE HP PCI/PCI-X SAS MPT Adapter
/dev/sasd0
ext_bus 2 0/1/1/0.0.0 sasd_vbus CLAIMED INTERFACE SAS Device Interface
target 2 0/1/1/0.0.0.0 tgt CLAIMED DEVICE
disk 0 0/1/1/0.0.0.0.0 sdisk CLAIMED DEVICE HP DG072BB975
/dev/dsk/c2t0d0 /dev/rdsk/c2t0d0
target 1 0/1/1/0.0.0.1 tgt CLAIMED DEVICE
disk 1 0/1/1/0.0.0.1.0 sdisk CLAIMED DEVICE HP DG072BB975
/dev/dsk/c2t1d0 /dev/rdsk/c2t1d0
/dev/dsk/c2t1d0s1 /dev/rdsk/c2t1d0s1
/dev/dsk/c2t1d0s2 /dev/rdsk/c2t1d0s2
/dev/dsk/c2t1d0s3 /dev/rdsk/c2t1d0s3

ext_bus 0 0/3/0/0/0/0 ciss CLAIMED INTERFACE PCIe SAS SmartArray P400 RAID Controller
/dev/ciss0
target 0 0/3/0/0/0/0.0 tgt CLAIMED DEVICE
disk 2 0/3/0/0/0/0.0.0 sdisk CLAIMED DEVICE HP LOGICAL VOLUME
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
/dev/dsk/c0t0d0s1 /dev/rdsk/c0t0d0s1
/dev/dsk/c0t0d0s2 /dev/rdsk/c0t0d0s2
/dev/dsk/c0t0d0s3 /dev/rdsk/c0t0d0s3

Re: replace disk on hpux

Torsten. — Mon, 15 Nov 2021 17:19:01 GMT

Caution:

Replacement procedures differ depending on the controller!