11-13-2009
Help!! Failing HP-UX 11 system disk
Firstly, system setup -
HP900 K460, 3 internal hard drives that make up the system volume group(vg00) no software mirroring
HP-ux version 11.00
2 Nike 20 raid arrays attached, fully populated with 40 4gb hot swap drives(All used in production environment)
I have 3 disks that make up my root volume group(VG00). 1 of them is making a very load noise so I think its going to fail sometime soon. (Not sure which one)
I also have a number of other volume groups/disks running on 2 nike 20 disk arrays
The questions I have are -
I would like to know if its possible to clone or copy the failing disk onto another drive whilst it is still running then boot from the cloned disk.(I have no spare drive so will need to add one?
I have a make_tape_recovery backup, if I have to restore from that tape(Not sure how I do that) will I also need to restore all the other volume groups even though they are on separate disks or will they continue to function once the system has been restored from the tape.
I vaguely remember doing a recovery about 8 years ago using the make_tape_recovery which worked fine and the other disks carried on working
I'm a bit of a Unix novice so step by step instructions would be great
Just to be doubly sure, can you confirm the make_tape_Recovery options I should use to ensure I can restore my system disks should the noisy disk fail.
Hi there, sorry for long post, I've just checked the drives in SAM and 1 of them is a 4gb Swap disk(Lvol9) if that is the failing disk, is it possible to remove the swap disk, replace with new disk and add swap to that disk(If this makes sense). I'm assuming in this instance I can just delete the swap
would this be right?
Last edited by rees_a; 11-13-2009 at 08:52 AM..
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LEARN ABOUT NETBSD
lvconvert
LVCONVERT(8) System Manager's Manual LVCONVERT(8)
NAME
lvconvert - convert a logical volume from linear to mirror or snapshot
SYNOPSIS
lvconvert -m|--mirrors Mirrors [--mirrorlog {disk|core}] [--corelog] [-R|--regionsize MirrorLogRegionSize] [-A|--alloc AllocationPolicy]
[-b|--background] [-i|--interval Seconds] [-h|-?|--help] [-v|--verbose] [--version]
LogicalVolume[Path] [PhysicalVolume[Path]...]
lvconvert -s|--snapshot [-c|--chunksize ChunkSize] [-h|-?|--help] [-v|--verbose] [-Z|--zero y|n] [--version]
OriginalLogicalVolume[Path] SnapshotLogicalVolume[Path]
DESCRIPTION
lvconvert will change a linear logical volume to a mirror logical volume or to a snapshot of linear volume and vice versa. It is also used
to add and remove disk logs from mirror devices.
OPTIONS
See lvm for common options.
Exactly one of --mirrors or --snapshot arguments required.
-m, --mirrors Mirrors
Specifies the degree of the mirror you wish to create. For example, "-m 1" would convert the original logical volume to a mirror
volume with 2-sides; that is, a linear volume plus one copy.
--mirrorlog {disk|core}
Specifies the type of log to use. The default is disk, which is persistent and requires a small amount of storage space, usually on
a separate device from the data being mirrored. Core may be useful for short-lived mirrors: It means the mirror is regenerated by
copying the data from the first device again every time the device is activated - perhaps, for example, after every reboot.
--corelog
The optional argument "--corelog" is the same as specifying "--mirrorlog core".
-R, --regionsize MirrorLogRegionSize
A mirror is divided into regions of this size (in MB), and the mirror log uses this granularity to track which regions are in sync.
-b, --background
Run the daemon in the background.
-i, --interval Seconds
Report progress as a percentage at regular intervals.
-s, --snapshot
Create a snapshot from existing logical volume using another existing logical volume as its origin.
-c, --chunksize ChunkSize
Power of 2 chunk size for the snapshot logical volume between 4k and 512k.
-Z, --zero y|n
Controls zeroing of the first KB of data in the snapshot. If the volume is read-only the snapshot will not be zeroed.
Examples
"lvconvert -m1 vg00/lvol1"
converts the linear logical volume "vg00/lvol1" to a two-way mirror logical volume.
"lvconvert --mirrorlog core vg00/lvol1"
converts a mirror with a disk log to a mirror with an in-memory log.
"lvconvert --mirrorlog disk vg00/lvol1"
converts a mirror with an in-memory log to a mirror with a disk log.
"lvconvert -m0 vg00/lvol1"
converts a mirror logical volume to a linear logical volume.
"lvconvert -s vg00/lvol1 vg00/lvol2"
converts logical volume "vg00/lvol2" to snapshot of original volume "vg00/lvol1"
SEE ALSO
lvm(8), vgcreate(8), lvremove(8), lvrename(8), lvextend(8), lvreduce(8), lvdisplay(8), lvscan(8)
Red Hat, Inc LVM TOOLS 2.02.44-cvs (02-17-09) LVCONVERT(8)