Server :: Maximum LVM2 Logical Volumes ?
Sep 15, 2010Are there any maximum amount of logical volumes a LVM2 volume group can contain?
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CentOS 5 Server :: What Is The Maximum Number Of Logical Volumes In A Volume Group
May 15, 2009what the maximum number of logical volumes is for a volume group in LVM ? Is there any known performance hit for creating a large number of small logical volumes vs a small number of large volumes ?
View 1 Replies View RelatedSlackware :: Way To Restore Deleted LVM2 Volumes?
Jun 12, 2010I was trying to remove a logical volume, but used the lvremove command incorrectly.
I did something like:
Code:
Thinking it would remove somelv from myvg
But instead it said "volume group somelv: not found" and then deleted all the logical volumes in myvg.
Is there any way to restore them or is it reinstall time?
I had some backups of my system, but unfortunately they were stored on a logical volume in the same volume group.
Debian :: LVM Setup With 3 Logical Volumes?
Nov 25, 2010I have done a recent install of Debian squeeze on a laptop. I set up LVM with 3 LV's, one for the root filesystem, one for /home, and another for swap. I then used lvextend to increase the size of the LV's. This additional space is shown if I enter lvdisplay (shortened for clarity):
- Logical volume -
LV Name /dev/auriga/swap
LV Size 4.66 GiB
- Logical volume -
LV Name /dev/auriga/root
LV Size 15.97 GiB
- Logical volume -
LV Name /dev/auriga/home
LV Size 169.01 GiB
However, if I use df, it still shows the previous size.
/dev/mapper/auriga-root 14G 8.0G 5.2G 61% /
/dev/sda1 221M 16M 193M 8% /boot
/dev/mapper/auriga-home 147G 421M 139G 1% /home
I have even tried restarting as well. I do not understand why df would still show that /home is 147GB, when I extended it to 169GB using lvextend. Similarly for the root, which was extended by 2GB from 14GB to 16GB.
Red Hat :: Logical Volumes Not Detected During Boot
Jan 28, 2010I have a system where the logical volumes are not being detected on boot and would like some guidance as to how to cure this. The box is a Proliant DL385 G5p with a pair of 146 GB mirrored disks. The mirroring is done in hardware by an HP Smart Array P400 controller. The mirrored disk (/dev/cciss/c0d0) has 4 partitions: boot, root, swap and an LVM physical volume in one volume group with several logical volumes, including /var, /home and /opt.
The OS is a 64-bit RHEL 5.3 basic install with a kernel upgrade to 2.6.18-164.6.1.el5.x86_64 (to cure a problem with bonded NICs) plus quite a few extras for stuff like Oracle, EMC PowerPath and HP's Proliant Support Pack. The basic install is OK and the box can still be rebooted OK after the kernel upgrade. However, after the other stuff goes on it fails to reboot.
The problem is that the boot fails during file system check of the logical volume file systems but the failure is due to these volumes not being found. Specifically the boot goes through the following steps:
Red Hat nash version 5.1.19.6 starting
setting clock
starting udev
loading default keymap (us)
setting hostname
No devices found <--- suspicious?
Setting up Logical Volume Management:
fsck.ext3 checks then fail with messages: No such file or directory while trying to open /dev/<volume group>/<logical volume> There are also messages about not being able to find the superblock but this is clearly due to the device itself not being found. If I boot from a rescue CD all of the logical volumes are present, with correct sizes; dmsetup shows them all to be active and I can access the files within. Fdisk also shows all the partitions to be OK and of the right type. I am therefore very sure that there is nothing wrong with the disk or logical volumes....
Debian :: Encrypted Lvm: How To Resize Logical Volumes
Apr 24, 2011I have let the debian installer set up with separate partions forrootusrvarhometmpIt ended up with a huge home partition and little place for the others.So I wanted to give some of home's space to the others and didlvreduce on homelvextend on the others.Following some info on the net it tells you toe2fsck -f partition1 followed by aresize2fs partition1But when I try to fsck the reduced home partition I got the following error:The filesystem size (according to the superblock) is 73113600 blocksThe physical size of the device is 20447332 blocksEither the superblock or the partition table is likely to be corrupt!Abort? yesIs there any way to save this?
View 5 Replies View RelatedGeneral :: Encrypting Existing Logical Volumes
Jan 8, 2011How would I go about encrypting my lvm2 logical volumes on Debian Squeeze? Is it possible without backing everything up to a different drive and restoring afterwards?
View 3 Replies View RelatedGeneral :: List Filesystems That Are Using LVM Logical Volumes?
Jun 23, 2011I've read the first 40% of the RHEL 5 Logical Volume Manager Administrator's Guide, but still have one outstanding, burning question.
During the installation of Centos 5.6, I set up LVM physical volumes, volume groups and logical volumes. I can list these using pvdisplay, vgdisplay and lvdisplay commands.
How would I list what filesystems I have that are using my logical volumes?
Slackware :: Cannot Access Anything / Won't Mount Any Of Logical Volumes
Nov 15, 2010I upgraded aaa_elflibs as per Eric's advice here:URL..Now I can't access anything.it boots into tty1 and won't mount any of my logical volumes.
View 14 Replies View RelatedCentOS 5 :: Use E2label To Label One Of Logical Volumes
Jan 6, 2011I am trying to use e2label to label one of my Logical Volumes. the labeling is done successfully. but my findfs output is like this:
/dev/mapper/VolGroup00-TEST
CentOS 5 :: Recovering - Lvm2 - Can't Access Anything In That Logical Volume With Standard Tools
Jun 22, 2009I made a mistake with lvm2 on centos 5.2.
I used parted to create a partition inside the logical volume, and then merrily used that partition, which appeared as /dev/pv-whatever/lv-whateverp1
Of course I created the FS as ext3.
So, after a reboot, I can't access anything in that logical volume with standard tools, as /dev/pv-whatever now only has the lv-whatever special file inside.
I can look inside the LV with parted fine, but parted can't copy ext3 filesystems.
Is there any way to get the data out of a partition created INSIDE a logical volume if that filesystem is ext3?
OpenSUSE Install :: 11.1 Resize Logical Volumes Using Yast
Jan 20, 2009i cannot resize mounted lvm volumes with reiserfs by using yast like in a previous version 10.x !?
View 6 Replies View RelatedSlackware :: Nstallation CD When In A Pinch With A System On Logical Volumes?
Nov 3, 2010I would like to ask if is it possible to boot Slackware with the installation CD when in a pinch with a system on logical volumes? For the usual fdisk partitions the procedure is known:
Code:
boot: root=/dev/sda1 noinitrd ro or something like that. This way, the system boots with mounted basic partitions. My question is whether there is an option to achieve the same if the system is installed on logical volumes? I need to do this on a machine with dual booting Windows + Linux. The Windows needs to be reinstalled, but as is well known, the boot sector will then be overwritten. So after the Windows reinstallation I will need to boot Slackware with the installation CD and run lilo.
CentOS 5 :: Major Upgrades Safely Using Logical Volumes?
Sep 9, 2009Does everybody do major upgrades in place on production servers?Am I over-engineering by creating a new logical volume, syncing my working root volume to it and upgrading the new volume to test services? Then, after a week or 2 or 4, removing the old LV...
View 3 Replies View RelatedCentOS 5 :: Inherited Logical Volumes Mount Only With --partial?
Sep 11, 2011I inherited a 3ware 9550SX running a version of gentoo with a2.6.28.something kernel. I started over with CentOS 5.6 x86_64.tw_cli informs me that the 9-disk RAID 5 is healthy.The previous admin used lvm (?) to carve up the RAID into a zilliontiny pieces and one big piece. My main interest is the big piece.Some of the small pieces refused to mount until I installed theCentOS plus kernel (they are reiserfs).The remainder seem to be ext3; however, they are not mounted at boot("refusing activation"). lvs tells me they are not active. If I try tomake one active, for example:root> lvchange -ay vg01/usrI get:Refusing activation of partial LV usr. Use --partial to override.If I use --partial, I get:Partial mode. Incomplete logical volumes will be processed.and then I can then mount the partition, but not everything seems tobe there.
Some of the directory entries look like this:?--------- ? ? ? ? ? logfilesIs it possible that the versions of the kernel and lvm that wereon the gentoo system are causing grief for an older kernel (andpossibly older lvm) on CentOS 5.6 and that I might have greaterfortunes with CentOS 6.x ?Or am I missing something fundamental? This is my first experiencewith lvm, so it's more than a little probable.
OpenSUSE Install :: Expanding Root And Home Logical Volumes
Jul 9, 2011So today I needed to switch from openSolaris to a viable OS on my workstation and decided to install openSUSE after having good experiences with it on my personal laptop. I ran into some problems partitioning one of the two hard disks installed on the system. I was limited on the amount of time I could spend at the office doing the install so I decided to use LVM on the one hard disk that seemed to work okay.
I picked LVM because although I don't know much at all about LVM, I at least know enough that it would allow me to expand the root and home partitions once I get the 2nd hard drive working correctly. So now that I've gotten the 2nd disk working okay, I've created two physical volumes on the 2nd drive, one to expand the root partition and one to expand the home partition. So, my question is, can I expand the root an home partitions while they are mounted or should I boot into a live CD environment before I expand the partitions? If I could expand them without booting into a different environment, that would be so great as I don't want to have to drive out to the office again before Monday. BTW, I am a new openSUSE user and an ex Ubuntu user. I loved the Ubuntu forums but had to switch because I do not agree with the direction that Ubuntu is taking.
General :: Know Maximum Number Of Logical Partition?
Sep 11, 2009I'd just like to know the max number of logical partitions an extended partition can hold. Is that number different for IDE and SCSI hard drives?
View 11 Replies View RelatedFedora Installation :: 15 - LUKS Encrypted Logical Volumes Not Mounting On Boot
May 26, 2011I have a setup that looks like this
[Code]....
and I'm dumped into recovery mode. However, if I remove these mounts from /etc/fstab via comments, I can wait for the system to boot (which it does very quickly) then mount the mapper devices myself. So what is going on? Has something changed wrt logical volumes, or is this just systemd? I can live with manual mounting, but any advice on resolving the automatic mounting situation would be great.
[Code]....
Fedora Installation :: New Install Selections To Preserve User Data In Logical Volumes?
Apr 1, 2009I have Fedora Core 8 installed. I would like to reinstall it so as to get back commands that have been lost. To preserve my user data that has been stored in logical volumes, what selections should I make in the installation process? Are these selections essentially the same for Fedora Core 10?
View 5 Replies View RelatedFedora :: Boot Can't Access Ext4 Partitions On LVM Logical Volumes On RAID Array?
Feb 8, 2011i have a fedora 11 server which can't access the ext4 partitions on lvm logical volumes on a raid array during boot-up. the problem manifested itself after a failed preupgrade to fedora 12; however, i think the attempt at upgrading to fc12 might not have anything to do with the problem, since i last rebooted the server over 250 days ago (sometime soon after the last fedora 11 kernel update). prior to the last reboot, i had successfully rebooted many times (usually after kernel updates) without any problems. i'm pretty sure the fc12 upgrade attempt didn't touch any of the existing files, since it hung on the dependency checking of the fc12 packages. when i try to reboot into my existing fedora 11 installation, though, i get the following screen: (click for full size) a description of the server filesystem (partitions may be different sizes now due to the growing of logical volumes):
Code:
- 250GB system drive
250MB/dev/sdh1/bootext3
lvm partition rest of driveVolGroup_System
10240VolGroup_System-LogVol_root/ext4
[code]....
except he's talking about fake raid and dmraid, whereas my raid is linux software raid using mdadm. this machine is a headless server which acts as my home file, mail, and web server. it also runs mythtv with four hd tuners. i connect remotely to the server using nx or vnc to run applications directly on the server. i also run an xp professional desktop in a qemu virtual machine on the server for times when i need to use windows. so needless to say, it's a major inconvenience to have the machine down.
Ubuntu Installation :: Number Of Partitions / Logical Volumes Can Create Using Partman-auto Recipes?
Mar 2, 2011Is there a limit to the number of partitions/logical volumes you can create using the partman-auto recipes? If not, any thoughts on why my preseed using the values included below results in only a /boot partition and logical volumes root, swap, and user? Is there another way to achieve putting /, /tmp, /var, /usr, /usr_local /opt, etc on their own logical volumes with preseeding?
View 1 Replies View RelatedServer :: Split LVM2 Partition While Server Is Online?
Apr 27, 2010I need to split one of my big partitions without data loss while the server is running,here is my df -h output:
Filesystem Size Used Avail Use% Mounted on
/dev/pve/root 95G 756M 89G 1% /
tmpfs 1003M 0 1003M 0% /lib/init/rw
udev 10M 2.7M 7.4M 27% /dev
tmpfs 1003M 4.0K 1003M 1% /dev/shm
/dev/mapper/pve-data 356G 52G 304G 15% /var/lib/vz
/dev/sda1 504M 32M 448M 7% /boot
I want to make a little partition from /dev/mapper/pve-data with size of 50 GB while the other files on that partition remain untouched,
Server :: Recover Raid 5 Array + LVM2?
Jan 27, 2010I had a raid 5 + lvm 2 array and lost a disk. While it was recovering the array, the power was down and recovery stopped. When I recovered the power and start the machine the array was unable to start, it was degraded and the states were different between disks. Every disk watched the array in a different way. I put you the states:
Quote:
/dev/sdd1
Number Major Minor RaidDevice State
this 0 8 33 0 active sync /dev/sdc1
[code]....
The first part in /dev/sdc1 is the same for all the devices, I just post you the states. Another thing is tha all the devices say that there is no superblock It seems that 3 disks are "active sync" but the states of the others doesn't match between them. And /dev/sdd1 is spare, the disk I added manually at first to start the recovery process.
OpenSUSE Hardware :: ERROR: Bad Logical Partition 6: Enlarged Logical Partitions Overlap
Aug 22, 2011After fixing drive partition numbers, I got the following error from cfdisk: Code: FATAL ERROR: Bad logical partition 6: enlarged logical partitions overlap Press any key to exit cfdisk However, I can see all my partitions with fdisk and gparted, I can mount and use all of them.I used the following guide to fix the drive numbers order: Reorder partition drive numbers in linux | LinkedBits Does somebody know whet is cfdisks problem and how can I fix it?
View 6 Replies View RelatedServer :: E2fsck Froze At 4.8 Percent On Large LVM2 Volume
Feb 16, 2011We had to reboot a server in the middle of a production day due to 99% iowait (lots of processes in deep sleep waiting for disk iops). That's never happened to us before. It had been 363 days since the last fsck, so it started automatically on reboot. It hung at 4.8% on a 2TB LVM2 volume for about an hour. I killed the fsck and rebooted the server. The second time, it went past that point and is currently at about 62%. First, what causes e2fsck to hang like that? Second, is there any danger in killing e2fsck, rebooting, and starting it again?
View 1 Replies View RelatedServer :: Partition An LVM In Two Volumes?
Oct 4, 2010Is it possible to partition an LVM in two volumes. So that one can be an ext4 filesystem and another can be swap.
View 6 Replies View RelatedServer :: Procedure To Replace Failed Drive On RedHat Running LVM2
Nov 19, 2009I am learning Linux and I am documenting procedures for troubleshooting for any disk related issues and I would like to know the procedure to replace a Failed hard drive running Redhat 5.1 running LVM2.
View 5 Replies View RelatedServer :: How To Resize Two Ext4 Volumes
Jul 5, 2011I have been asked to use space allocated to /dev/sdb2 to grow /dev/sdb1 both filesystems contain data. When I run lvdisplay or vgdisplay I get "no volume groups found". and pvdisplay returns nothing. Do I need to add the fs to a group?
View 2 Replies View RelatedServer :: Cat /proc/mdstat - How To Tell What Volumes Its Resyncing
Apr 28, 2011Looking at the output of a cat /proc/mdstat, how do i know what volumes its actually resyncing? when i do a df -h everything appears to be there.
Personalities : [raid1]
read_ahead 1024 sectors
Event: 2
md0 : active raid1 sdb1[1] sda1[0]
859549696 blocks [2/2] [UU]
[Code]....
Server :: Munin Df Plugin - Volumes Missing On The Graph
Feb 23, 2011I'm using munin to monitor our servers. Recently I created additional partitions on one of them and I noticed that munin has not picked up the changes.
I restarted munin-node and running the plugin manually as user munin on the machine
Code:
$ munin-run df
I get all my partitions
Also when I telnet 10.1.1.25 4949 and run
Code:
fetch df
I'm getting all of them. The graph however displays only the ones that were there at the time of munin install.
How can I get munin to add the new partitions to the graph ?