10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
I have below code for disk creation
disk_list=$(ls /dev/sd)
for disk in $disk_list
do
pvcreate $i
done
So what my understanding is first it is checking the disk under /dev sdb,sdc,sdd,...sdz whether 25 disk are existing
if not then its creating the 25 physical volume.
I... (4 Replies)
Discussion started by: stew
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2. Red Hat
Hi,
I need a suggesstion i have 2 disk if i installed OS / root partition by making Lvm in one disk and data in other disk also with the lvm, means 2 different lvms.
Is making LVM partition for OS disk will the performacne will be good?
Can i make 2 different lvm one is for OS and other for... (1 Reply)
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3. Slackware
Dear all,
I found, in Slackware, without using physical/raw partition Linux can be booted & OS will be in LVM but in general people use /boot from physical/raw partition to boot the RedHat linux System & root and other file systems would be in LVM. My doubt is how a system will be booted without... (5 Replies)
Discussion started by: Tlogine
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4. Red Hat
Hey everyone.
I am working on designing a logging solution for a deployment we have going out in a few months. Right now we have a single storage head end, connected via fibre to a SAN. Basically the plan is to create a number of smaller LUNs on the SAN, and then use LVM2 to handle concatenating... (5 Replies)
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5. Linux
Hi,
What do you means to create so OS Linux directories under LVM?
So, I've installed my machine :
df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda3 97943628 524316 92443984 1% /
udev 4023852 168 4023684 1% /dev... (1 Reply)
Discussion started by: hiddenshadow
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6. Red Hat
Hi all;
I have a quick question about LVM.
2.6.18-92.1.18.el5
Distributor ID: RedHatEnterpriseServer
Description: Red Hat Enterprise Linux Server release 5.3 (Tikanga)
Release: 5.3
Codename: Tikanga
I was going through /etc/lvm.conf and I am not clear with lvm meta... (0 Replies)
Discussion started by: maverick_here
0 Replies
7. Filesystems, Disks and Memory
Hi All,
I am planning to do a LVM replicate to another server.
Example :
server1.foo.com has / , /boot , swap and few LVM partitions. All are in /dev/sda disk of size 80GB. /dev/sda5 is a LVM partition which has only one vg00 and it has 2 LV's (/var and /usr) and a SAN storage connected to... (0 Replies)
Discussion started by: rakrhn
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8. Linux
Hi All,
I am planning to do a LVM replicate to another server.
Example :
server1.foo.com has / , /boot , swap and few LVM partitions. All are in /dev/sda disk of size 80GB. /dev/sda5 is a LVM partition which has only one vg00 and it has 2 LV's (/var and /usr) and a SAN storage connected to... (0 Replies)
Discussion started by: rakrhn
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9. Filesystems, Disks and Memory
I'm setting up a CentOS 5 server that will be connected to an HP EVA4000. My previous experience is with an HP VA7400 and HP-UX. In HP-UX I can add "alternate paths" to a volume group in order to have redundant paths to the SAN via dual fiber channel HBAs just by either adding them with... (3 Replies)
Discussion started by: deckard
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10. Linux
Hi all,
yes this is a linux question :) but also a LVM question.
Some time ago, I saw an posting, LVM Version 1.X is abe to handle multiple physical pathes to a disk with using md devices. Is this right ?
Now I am planing to create a san and want use linux fileservers with LVM v1.X and most... (1 Reply)
Discussion started by: malcom
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PARTX(8) System Administration PARTX(8)
NAME
partx - tell the kernel about the presence and numbering of on-disk partitions
SYNOPSIS
partx [-a|-d|-P|-r|-s|-u] [-t type] [-n M:N] [-] disk
partx [-a|-d|-P|-r|-s|-u] [-t type] partition [disk]
DESCRIPTION
Given a device or disk-image, partx tries to parse the partition table and list its contents. It can also tell the kernel to add or remove
partitions from its bookkeeping.
The disk argument is optional when a partition argument is provided. To force scanning a partition as if it were a whole disk (for example
to list nested subpartitions), use the argument "-" (hyphen-minus). For example:
partx --show - /dev/sda3
This will see sda3 as a whole-disk rather than as a partition.
partx is not an fdisk program - adding and removing partitions does not change the disk, it just tells the kernel about the presence and
numbering of on-disk partitions.
OPTIONS
-a, --add
Add the specified partitions, or read the disk and add all partitions.
-b, --bytes
Print the SIZE column in bytes rather than in human-readable format.
-d, --delete
Delete the specified partitions or all partitions.
-g, --noheadings
Do not print a header line with --show or --raw.
-l, --list
List the partitions. Note that all numbers are in 512-byte sectors. This output format is DEPRECATED in favour of --show. Do not
use it in newly written scripts.
-n, --nr M:N
Specify the range of partitions. For backward compatibility also the format M-N is supported. The range may contain negative num-
bers, for example --nr -1:-1 means the last partition, and --nr -2:-1 means the last two partitions. Supported range specifications
are:
M Specifies just one partition (e.g. --nr 3).
M: Specifies the lower limit only (e.g. --nr 2:).
:N Specifies the upper limit only (e.g. --nr :4).
M:N Specifies the lower and upper limits (e.g. --nr 2:4).
-o, --output list
Define the output columns to use for --show, --pairs and --raw output. If no output arrangement is specified, then a default set is
used. Use --help to get list of all supported columns. This option cannot be combined with the --add, --delete, --update or --list
options.
-P, --pairs
List the partitions using the KEY="value" format.
-r, --raw
List the partitions using the raw output format.
-s, --show
List the partitions. The output columns can be selected and rearranged with the --output option. All numbers (except SIZE) are in
512-byte sectors.
-t, --type type
Specify the partition table type.
--list-types
List supported partition types and exit.
-u, --update
Update the specified partitions.
-S, --sector-size size
Overwrite default sector size.
-v, --verbose
Verbose mode.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
EXAMPLES
partx --show /dev/sdb3
partx --show --nr 3 /dev/sdb
partx --show /dev/sdb3 /dev/sdb
All three commands list partition 3 of /dev/sdb.
partx --show - /dev/sdb3
Lists all subpartitions on /dev/sdb3 (the device is used as whole-disk).
partx -o START -g --nr 5 /dev/sdb
Prints the start sector of partition 5 on /dev/sdb without header.
partx -o SECTORS,SIZE /dev/sda5 /dev/sda
Lists the length in sectors and human-readable size of partition 5 on /dev/sda.
partx --add --nr 3:5 /dev/sdd
Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd.
partx -d --nr :-1 /dev/sdd
Removes the last partition on /dev/sdd.
SEE ALSO
addpart(8), delpart(8), fdisk(8), parted(8), partprobe(8)
AUTHORS
Davidlohr Bueso <dave@gnu.org>
Karel Zak <kzak@redhat.com>
The original version was written by Andries E. Brouwer <aeb@cwi.nl>.
ENVIRONMENT
LIBBLKID_DEBUG=all
enables libblkid debug output.
AVAILABILITY
The partx command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils
/util-linux/>.
util-linux December 2014 PARTX(8)