10 More Discussions You Might Find Interesting
1. Solaris
I have backed up the contents of my Solaris 10 machine in its entirety, and I'm trying to figure out if I can somehow use this archive to restore my old system just as it was on a new machine. Assuming I have all files from my old machine backed up, is this possible?
What I've been trying to do... (6 Replies)
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2. Shell Programming and Scripting
Hello, I need to restore some yesterday emails from backup within a 5 hours timeframe
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3. UNIX for Dummies Questions & Answers
I'm using a script (automysqlbackup) to dump mysql db's to .sql file followed by taking one full backup of the .sql file and the differential backups of the newer sql file every day using the tool diff.
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4. AIX
Hi,
I have a IBM Power series machine that has 2 VIOs and hosting 20 LPARS.
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Now these two LPARs need to be configured for HACMP (PowerHA) as well.
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5. AIX
Hello,
Last night I applied a DB2 fix pack which is now causing problems with the application that uses db2. Prior to applying the fix pack I did a mksysb(rootvg) which includes the file system that has db2 installed on it. If I do a restore from this will it restore the db2 version back to... (1 Reply)
Discussion started by: jyoung
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6. UNIX for Advanced & Expert Users
Please help me in resolving the issue.
I have taken backup using the below command
$ tar cvf - . |compress -> /opt/globusback2/needed_backups/apglsg.tar.Z
I tried to restore the backup using the below command.
$ zcat /opt/globusback2/needed_backups/apglsg.tar.Z | tar -xvf -
... (5 Replies)
Discussion started by: amirthraj_12
5 Replies
7. UNIX for Dummies Questions & Answers
Please help me in resolving the issue.
I have taken backup using the below command
$ tar cvf - . |compress -> /opt/globusback2/needed_backups/apglsg.tar.Z
I tried to restore the backup using the below command.
$ zcat /opt/globusback2/needed_backups/apglsg.tar.Z | tar -xvf -
... (2 Replies)
Discussion started by: amirthraj_12
2 Replies
8. AIX
I have a standard template I deploy for each of my AIX servers. It's in a mksysb format which I pulled via the nim server after I originally set it up.
I'm trying to restore this mksysb over the wire to a remote system. The remote system is an lpar running under vio (no HMC attached). The disk... (1 Reply)
Discussion started by: scottsl
1 Replies
9. OS X (Apple)
So I had some bad RAM in my server. Of course I didn't know it at the time. And it kept making the 10.3.5 updater crash. And that last crash did it. My drive was messed up. So I had to reformat and reinstall. Luckily I had a whole slew of fresh backups. But I'm really hung up on the mail. I backed... (0 Replies)
Discussion started by: l008com
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10. AIX
Guys,
Got a very urgent question here.
I accindently deleted everything on my RS600, with the rm -R command.
Now I want to restore an mksysb tape but I get the following error.
format on /dev/rmt1.1 is not in backup format
please mount /dev/rmt1.1 and press enter.
Can anyone help me... (7 Replies)
Discussion started by: Erik Rooijmans
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VGCREATE(8) System Manager's Manual VGCREATE(8)
NAME
vgcreate - create a volume group
SYNOPSIS
vgcreate [--addtag Tag] [--alloc AllocationPolicy] [-A|--autobackup {y|n}] [-c|--clustered {y|n}] [-d|--debug] [-h|--help] [-l|--maxlogi-
calvolumes MaxLogicalVolumes] [-M|--metadatatypetype] [-p|--maxphysicalvolumes MaxPhysicalVolumes] [-s|--physicalextentsize PhysicalExtent-
Size[kKmMgGtT]] [-t|--test] [-v|--verbose] [--version] VolumeGroupName PhysicalVolumePath [PhysicalVolumePath...]
DESCRIPTION
vgcreate creates a new volume group called VolumeGroupName using the block special device PhysicalVolumePath previously configured for LVM
with pvcreate(8).
OPTIONS
See lvm for common options.
-c, --clustered {y|n}
If clustered locking is enabled, this defaults to y indicating that this Volume Group is shared with other nodes in the cluster.
If the new Volume Group contains only local disks that are not visible on the other nodes, you must specify --clustered n. If the
cluster infrastructure is unavailable on a particular node at a particular time, you may still be able to use such Volume Groups.
-l, --maxlogicalvolumes MaxLogicalVolumes
Sets the maximum number of logical volumes allowed in this volume group. The setting can be changed with vgchange. For volume
groups with metadata in lvm1 format, the limit and default value is 255. If the metadata uses lvm2 format, the default value is 0
which removes this restriction: there is then no limit.
-p, --maxphysicalvolumes MaxPhysicalVolumes
Sets the maximum number of physical volumes that can belong to this volume group. The setting can be changed with vgchange. For
volume groups with metadata in lvm1 format, the limit and default value is 255. If the metadata uses lvm2 format, the default value
is 0 which removes this restriction: there is then no limit. If you have a large number of physical volumes in a volume group with
metadata in lvm2 format, for tool performance reasons, you should consider some use of --metadatacopies 0 as described in pvcre-
ate(8).
-s, --physicalextentsize PhysicalExtentSize[kKmMgGtT]
Sets the physical extent size on physical volumes of this volume group. A size suffix (k for kilobytes up to t for terabytes) is
optional, megabytes is the default if no suffix is present. The default is 4 MB and it must be at least 1 KB and a power of 2.
Once this value has been set, it is difficult to change it without recreating the volume group which would involve backing up and
restoring data on any logical volumes. However, if no extents need moving for the new value to apply, it can be altered using
vgchange -s.
If the volume group metadata uses lvm1 format, extents can vary in size from 8KB to 16GB and there is a limit of 65534 extents in
each logical volume. The default of 4 MB leads to a maximum logical volume size of around 256GB.
If the volume group metadata uses lvm2 format those restrictions do not apply, but having a large number of extents will slow down
the tools but have no impact on I/O performance to the logical volume. The smallest PE is 1KB.
The 2.4 kernel has a limitation of 2TB per block device.
EXAMPLES
To create a volume group named test_vg using physical volumes /dev/hdk1, and /dev/hdl1 with default physical extent size of 4MB:
vgcreate test_vg /dev/sdk1 /dev/sdl1
SEE ALSO
lvm(8), pvdisplay(8), pvcreate(8), vgdisplay(8), vgextend(8), vgreduce(8), lvcreate(8), lvdisplay(8), lvextend(8), lvreduce(8)
Sistina Software UK LVM TOOLS 2.02.44-cvs (02-17-09) VGCREATE(8)