I have a mirrored LVM volume, and wish to break the mirror leaving only copy1 (effectively removing copy 0).
Here's the config:
I think running the above example command will convert the mirror to a linear volume running on copy 0. Any ideas how I can do the same, but leave it running on copy 1?
Thanks in advance.
---------- Post updated at 03:26 AM ---------- Previous update was at 01:59 AM ----------
i figured it out cheers. You need to specify the devices you wish to remove from the mirror, after the lvconvert command.
Hello again,
We need to install patches to HP-UX B.11.11 but would like to break the mirror it has (with out damaging it) so that in case of failure we can use this a meassure procedure.
Any ideas on how to do this
Thank you! (2 Replies)
Hi All,
How do you know if you need to break the mirror on solaris 8 patch update?
Here's the patch example, 117350-54. On the site, it's just a low type update and not a medium or critical.
Is breaking a mirror a best practice only or really a requirement to some patch?
Thanks,
itik (1 Reply)
Hi All,
How do I break the solaris 8 mirror? And how do I make sure I will point the first hd mirror on reboot.
If the first break mirror won't boot. How do I make the copy mirror to boot?
Thanks in advance,
itik (2 Replies)
I apologize is this isn't an appropriate post for the 'advanced' UNIX, so please let me know if I should post this under UNIX for dummies, but here's my problem in a nutshell: I having problems creating a mirrored logical volume.
I have created two new physical volumes
... (2 Replies)
I am working in Datastage Migration project. The applications has to be moved from legacy machines to the new machines.
all the applications will be having their own application id and password (non expiry) created in the unix (5.3). Now the scripts and the datastage applications has to be moved... (1 Reply)
Hi,
I need to know who can I create an script in order to check server mirror in AIX. I got this script
!/usr/bin/ksh
#
# Check if a VG is mirrored.
#
# lsattr -El <lvname> -a strictness -a copies
# If copies=2 and scrictness=y, then VG is mirrored
#
# LVs are retrieved via 'lsvg -l... (5 Replies)
Hello,
aix 5.2, mirrored rootvg on hdisk0 and hdisk1. hdisk0 is dead. I can boot to cd, into sms, into maintenance mode. I can fsck all the various partitions on hdisk1 (the hd4 hd2 hd3, etc...) all is fine. But without the hdisk0 part of the mirror I cannot get the system to boot. ystem hangs on... (6 Replies)
Hi,
I have old server hp rp 3440 hp-ux 11.11. One mirrored disk is faulty. I need spesial patch PHKL_31216 and PHCO_30698, which give to correctly remove disk. Unfortunately I don't have access to hp support site. Please help me find it patch.
regards,Andre (0 Replies)
Hello,
I am trying to convert a single-drive Centos 7.2 installation with LVM into a two-disk mdadm mirror with mrrored LVM. I was able to follow the excellent instructions at:
http://www.dgoradia.com/creating-a-raid1-mirrored-on-an-existing-centos-on-lvm/and did create a two-disk mirror... (1 Reply)
Discussion started by: Clovis_Sangrail
1 Replies
LEARN ABOUT LINUX
lvextend
LVEXTEND(8) System Manager's Manual LVEXTEND(8)NAME
lvextend - extend the size of a logical volume
SYNOPSIS
lvextend [--alloc AllocationPolicy] [-A|--autobackup y|n] [-d|--debug] [-h|-?|--help] [--noudevsync] [-i|--stripes Stripes [-I|--stripesize
StripeSize]] {-l|--extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}] | -L|--size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]}
[-f|--force] [-n|--nofsck] [-r|--resizefs] [-t|--test] [-v|--verbose] LogicalVolumePath [PhysicalVolumePath[:PE[-PE]]...]
DESCRIPTION
lvextend allows you to extend the size of a logical volume. Extension of snapshot logical volumes (see lvcreate(8) for information to cre-
ate snapshots) is supported as well. But to change the number of copies in a mirrored logical volume use lvconvert(8).
OPTIONS
See lvm for common options.
--noudevsync
Disable udev synchronisation. The process will not wait for notification from udev. It will continue irrespective of any possible
udev processing in the background. You should only use this if udev is not running or has rules that ignore the devices LVM2 cre-
ates.
-l, --extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}]
Extend or set the logical volume size in units of logical extents. With the + sign the value is added to the actual size of the
logical volume and without it, the value is taken as an absolute one. The number can also be expressed as a percentage of the total
space in the Volume Group with the suffix %VG, relative to the existing size of the Logical Volume with the suffix %LV, of the
remaining free space for the specified PhysicalVolume(s) with the suffix %PVS, as a percentage of the remaining free space in the
Volume Group with the suffix %FREE, or (for a snapshot) as a percentage of the total space in the Origin Logical Volume with the
suffix %ORIGIN. The resulting value is rounded upward.
-L, --size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]
Extend or set the logical volume size in units of megabytes. A size suffix of M for megabytes, G for gigabytes, T for terabytes, P
for petabytes or E for exabytes is optional. With the + sign the value is added to the actual size of the logical volume and with-
out it, the value is taken as an absolute one.
-i, --stripes Stripes
Gives the number of stripes for the extension. Not applicable to LVs using the original metadata LVM format, which must use a sin-
gle value throughout.
-I, --stripesize StripeSize
Gives the number of kilobytes for the granularity of the stripes. Not applicable to LVs using the original metadata LVM format,
which must use a single value throughout.
StripeSize must be 2^n (n = 2 to 9)
-f, --force
Proceed with size extension without prompting.
-n, --nofsck
Do not perform fsck before extending filesystem when filesystem requires it. You may need to use --force to proceed with this
option.
-r, --resizefs
Resize underlying filesystem together with the logical volume using fsadm(8).
Examples
"lvextend -L +54 /dev/vg01/lvol10 /dev/sdk3" tries to extend the size of that logical volume by 54MB on physical volume /dev/sdk3. This is
only possible if /dev/sdk3 is a member of volume group vg01 and there are enough free physical extents in it.
"lvextend /dev/vg01/lvol01 /dev/sdk3" tries to extend the size of that logical volume by the amount of free space on physical volume
/dev/sdk3. This is equivalent to specifying "-l +100%PVS" on the command line.
"lvextend -L+16M vg01/lvol01 /dev/sda:8-9 /dev/sdb:8-9"
tries to extend a logical volume "vg01/lvol01" by 16MB using physical extents /dev/sda:8-9 and /dev/sdb:8-9 for allocation of extents.
SEE ALSO fsadm(8), lvm(8), lvcreate(8), lvconvert(8), lvreduce(8), lvresize(8), lvchange(8)Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) LVEXTEND(8)