10 More Discussions You Might Find Interesting
1. Hardware
Hi everyone,
I have an external hard drive and I accidentally deleted the partition table.
Can I restore my files?
If I try to run the f-disk command this is what it says
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units =... (1 Reply)
Discussion started by: Sampa
1 Replies
2. Red Hat
How to check whether the disk in linux machine are internal or external ( from nas or san). How to identify internal(local) and external disks. Following are some details of my server. Thanks.
#df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 15G 3.5G 10G... (2 Replies)
Discussion started by: salmanraza
2 Replies
3. Red Hat
Hi all.
Can i install RHEl5 in a external hard disk, work on lenovo T60 laptop.
Plz reply me. Tell me the process. (2 Replies)
Discussion started by: nagaraju.kappal
2 Replies
4. Hardware
I have a external HD that I can't seem to open. When I try to open it with gparted it says unrecognized disk. When I run gparted from the terminal this is what it says.
~ $ sudo gparted
======================
libparted : 2.2
======================
/dev/sdb: unrecognised disk label
When I... (18 Replies)
Discussion started by: cokedude
18 Replies
5. Linux
Hi,
I connected a external hard disk to my linux machine(Redhat 5) and shared the external hard disk by using NFS. The problem is hard disk becoming read-only file system after some time, could some one please tell me the reason for it.
I created two partitions with ext3 filesystem in... (10 Replies)
Discussion started by: ktrimu
10 Replies
6. AIX
I installed new internal disks in my p570. They will be part of a new AIX vg. Unfortunately, we have Veritas Volume Manager running on this AIX 5.2 ml 10 box. Veritas has grabbed control of the disks. I want AIX LVM to control the disks.
I cannot get these disks free of Veritas:
<lspv... (2 Replies)
Discussion started by: BobSmith
2 Replies
7. Solaris
Any help on this would be greatly appreciated. I have read other threads on similar subject but still not clear on what this is telling me and what action to take. Do I have a couple of disks that are slowly dying?
While checking disk usage on the V880 I noticed the following:
# format... (3 Replies)
Discussion started by: jamba1
3 Replies
8. SuSE
Hi,
I am running Suse on a fujitsu server. The problem is that it will no fully load the usb external disk. When plugged in, dmesg shows that indeed a usb disk has been plugged in ,but gives no devpath e.g sda,sdb.
lsusb shows the disk vendor (western digital) but nothing else.Whats goin on... (2 Replies)
Discussion started by: ulemsee
2 Replies
9. UNIX for Dummies Questions & Answers
Hi all
I had started to learn how to backup disk to disk to tape method
Firstly I had backup to my NAS
tar czvf /MyNetworkStorge/backup.tar /home
Secondly I using dd command to copy the tar to tape
dd if=/MyNetworkStorge/backup.tar of=/dev/tape0
But the tape drive always hang.... (5 Replies)
Discussion started by: lijiajin
5 Replies
10. HP-UX
Hi,
I have an HP RX4640 running HP-UX 11iv3 with two internal disks and its connected to a HP disk system 2400 with fibre cable.
If the storage system is online before the server is on then the server can't find the disks. And I get the following error messages:
vgchange: Warning: Couldn't... (3 Replies)
Discussion started by: hoff
3 Replies
vgchgid(1M) vgchgid(1M)
NAME
vgchgid - modify the Volume Group ID (VGID) on a given set of physical devices
SYNOPSIS
PhysicalVolumePath [PhysicalVolumePath] ...
DESCRIPTION
The command is designed to change the LVM Volume Group ID (VGID) on a supplied set of disks. will work with any type of storage, but it is
primarily targeted at disk arrays that are able to create "snapshots" or "clones" of mirrored LUNs. accepts a set of raw physical devices
and ensures that they all belong to the same volume group, before altering the VGID (see section).
The same VGID is set on all the disks and it should be noted that in cases of multi-PV volume groups, all the physical volumes should be
supplied in a single invocation of the command.
Options
recognizes the following options and arguments:
PhysicalVolumePath The raw devices path name of a physical volume.
Background
Some storage subsystems have a feature which allows a user to split off a set of mirror copies of physical storage (termed or just as LVM
splits off logical volumes with the command. As the result of the "split," the split-off devices will have the same VGID as the original
disks. is needed to modify the VGID on the BCV devices. Once the VGID has been altered, the BCV disks can be imported into a new volume
group by using
WARNINGS
Once the VGID has been changed, the original VGID is lost until a disk device is re-mirrored with the original devices. If is used on a
subset of disk devices (for example, two out of four disk devices), the two groups of disk devices would not be able to be imported into
the same volume group since they have different VGIDs on them. The solution is to re-mirror all four of the disk devices and re-run on all
four BCV devices at the same time, and then use to import them into the same new volume group.
If a disk is newly added to an existing volume group and no subsequent LVM operations has been performed to alter the structures (in other
words, operations which perform an automated vgcfgbackup(1M)); then it is possible a subsequent will fail. It will report that the disk
does not belong to the volume group. This may be overcome by performing a structure changing operation on the volume group (for example,
using
It is the system administrator's responsibility to make sure that the devices provided in the command line are all Business Copy volumes of
the existing standard physical volumes and are in the ready state and writable. Mixing the standard and BC volumes in the same volume
group can cause data corruption.
RETURN VALUE
returns the following values:
0 VGID was modified with no error
1 VGID was not modified
EXAMPLES
An example showing how might be used:
1. The system administrator uses the following commands to create the Business Continuity (BCV or BC) copy:
1) For EMC Symmetrix disks, the commands are and
2) For XP disk array, the commands are and
Three BCV disks are created.
2. Change the VGID on the BCV disks.
3. Make a new volume group using the BCV disks.
This step can be skipped as the group file will be created automatically. If the file is manually created it will have different major
and minor numbers (see lvm(7)).
4. Import the BCV disks into the new volume group.
5. Activate the new volume group.
6. Backup the new volume group's LVM data structure.
7. Mount the associated logical volumes.
SEE ALSO
vgimport(1M), vgscan(1M), vgcfgbackup(1M).
vgchgid(1M)