9 More Discussions You Might Find Interesting
1. AIX
Hello to all,
Im having a new task in a new world (AIX - IBM Servers)
I have an IBM Server (Type - 9111-285 very old one) with one Hard disk (73 GB 10 K) with AIX 5.x, and I need to clone the existing disk to another with the same specifications.
Could you please give me some advice in order... (7 Replies)
Discussion started by: trevian3969
7 Replies
2. Solaris
Hi,
I'm looking to copy a boot disk on an old Solaris 8 system using dd. I'll bring the system down to single user mode and begin from there. I'm copying my source disk to a larger target disk. Do I need to do anything other than the 'dd' command below because the target disk is bigger? ... (2 Replies)
Discussion started by: sparcman
2 Replies
3. UNIX for Advanced & Expert Users
Guys can anyone tell how can we do faster disk cloning
Below i found in google
1. dd if=/dev/sda of=/dev/sdb bs=4096 conv=noerror,sync
So adding "conv=noerror,sync " makes it faster looks against not adding it
2. Enable write cache activated (hdparm -W1 /dev/sda) then run dd ..
... (2 Replies)
Discussion started by: heman96
2 Replies
4. HP-UX
what is the difference between DRD and Root Mirror Disk using LVM mirror ? (3 Replies)
Discussion started by: maxim42
3 Replies
5. Solaris
Dear friends & gurus
i have some servers running solaris 10 intel machines,they are in mirror disk 2 disk there is no any hardware RAID only software RAID and they are in remote place.
1) solaris 10 OS c0t0d0(Disk1) & cotod1(Disk2) in mirror (SVM)
2) i want to break the mirror
3) boot... (0 Replies)
Discussion started by: niru
0 Replies
6. Filesystems, Disks and Memory
Disk cloning
I had an external SCSI master disk that I used to clone to an identical external SCSI disk because the other SCSI disk would become corrupted. My original Master became corrupted so I used one of the other to good disk to copy back to the master. Unfortunately the new master needs... (1 Reply)
Discussion started by: stamperr
1 Replies
7. Solaris
I have just been assigned the task of upgrading to a larger disk on a e250; however, I am use to working on Linux and x86 hardware. I would be very appreciative if someone could inform me on how this procedure can be done safely.
To begin with, the e250 has a 18 Gig primary scsi disk and a 18... (3 Replies)
Discussion started by: cstovall
3 Replies
8. UNIX Desktop Questions & Answers
could anyone give me a general idea of how i may clone a 2 Gig disk running Solaris 7 on it to another disk of the same size?
currently, this system only has one disk in it though. i do have the ability to hook up another disk via SCSI.
i have been told i need to boot to "miniroot" to run... (9 Replies)
Discussion started by: obosha
9 Replies
9. UNIX for Dummies Questions & Answers
Hello folks,
I have a sun sparcstation 20, I would like to upgrade one of the hard disks to a larger one. The one I would like to upgrade only contains user data. Here are my thoughts:
1. Backup the specific file system
2. Replace the disk with the larger disk
3. Create a new file... (2 Replies)
Discussion started by: DLongan
2 Replies
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)