search for: vgreduce

...onsole is this /dev/root: read failed after 0 of 4096 at 27522957312: Input/output error /dev/root: read failed after 0 of 4096 at 27523014656: Input/output error Couldn't find device with uuid vSbuSJ-o1Kh-N3ur-JYkM-Ktr4-WEO2-JWe2wS. Cannot change VG vg_devserver while PVs are missing. Consider vgreduce --removemissing. Then following the suggestion from the previous command results I run this other command vgreduce --removemissing vg_devserver but again got this error: WARNING: Partial LV lv_root needs to be repaired or removed. There are still partial LVs in VG vg_devserver. To remove them unco...

...ll the space of the 4 PVs. Right now, the third hard drive is damaged; and therefore the third PV (/dev/sdc1) cannot be accessed anymore. I would like to recover whatever left in the other 3 PVs (/dev/sda1, /dev/sdb1, and /dev/sdd1). I have tried with the following: 1. Removing the broken PV: # vgreduce --force vg_hosting /dev/sdc1 Physical volume "/dev/sdc1" still in use # pvmove /dev/sdc1 No extents available for allocation 2. Replacing the broken PV: I was able to create a new PV and restore the VG Config/meta data: # pvcreate --restorefile ... --uuid ... /dev/sdc1 # vgcfgrest...

We are in the process of migrating several stand-alone server hosts onto a CentOS-6 kvm virtual host. We also use Webmin to administer our hosts. All of the guests, without exception, have been cloned brom a prototype guest using virt-manager. All of the additional VirtIO disks assigned to some of the guests have been added through virt-manager as well. Recently I have encountered a situation

We are in the process of migrating several stand-alone server hosts onto a CentOS-6 kvm virtual host. We also use Webmin to administer our hosts. All of the guests, without exception, have been cloned brom a prototype guest using virt-manager. All of the additional VirtIO disks assigned to some of the guests have been added through virt-manager as well. Recently I have encountered a situation

Hi. I have a volume group (let's say) vg_data. It consists from /dev/sdd5 sdd6 sdd7 I added sdc5 Now I want to remove (free) sdd7 and you is to for RAID partition. What are the commands (ordered) I need to perform? I failed to find clear howto. vg-data has only one partition, total size is over 1TB, free space is about 500GB so

...pvcreate /dev/ramdisk vgextend vg /dev/ramdisk lvconvert -m 1 --corelog vg/lv_database /dev/ramdisk Even with lv_database being 35G, it doesn't take long to activate the mirror. I haven't decided where to put the commands to turn off the lvm mirror. lvconvert -m 0 vg/lv_database vgreduce vg /dev/ramdisk pvremove /dev/ramdisk I haven't put this in real world use, yet. On it's face, this might speed up database access. Would we expect it to speed up database access in real world use? Should I document the process so others could know how to do this? I realize new...

...drive is damaged; and therefore the third PV > | (/dev/sdc1) cannot be accessed anymore. I would like to recover whatever > | left in the other 3 PVs (/dev/sda1, /dev/sdb1, and /dev/sdd1). > | > | I have tried with the following: > | > | 1. Removing the broken PV: > | > | # vgreduce --force vg_hosting /dev/sdc1 > | Physical volume "/dev/sdc1" still in use > | > | # pvmove /dev/sdc1 > | No extents available for allocation > > > This would indicate that you don't have sufficient extents to move the > data off of this disk. If you have a...

...ing have to do with VMs. > Do you have some for straight-on-the-server, non-VM cases? I've used LVM on servers with hot-swap drives to migrate to new storage without downtime a number of times. Add new drives to the system, configure RAID (software or hardware), pvcreate, vgextend, pvmove, vgreduce, and pvremove (and maybe a lvextend and resize2fs/xfs_growfs). Never unmounted a filesystem, just some extra disk I/O. Even in cases where I had to shutdown or reboot a server to get drives added, moving data could take a long downtime, but with LVM I can live-migrate from place to place. LVM sna...

...point> lvchange -an <all qemu-nbd related 'LV Path's found from lvdisplay above> vgchange -an <qemu-nbd related volume> Now what? How do I get the volume out of the list so I can use 'qemu-nbd -d /dev/nbd0' to dis-associate the image with /dev/nbd0? vgreduce seems to be for volumes which have multiple underlying devices. I started to use vgremove but, when it started prompting for confirmation about removing logical volumes, I wasn't sure exactly what it was going to do and responded 'no'. If there is a web reference explaining this sp...

...vconvert -m 1 --corelog vg/lv_database /dev/ramdisk > > Even with lv_database being 35G, it doesn't take long to activate the > mirror. > > I haven't decided where to put the commands to turn off the lvm > mirror. > lvconvert -m 0 vg/lv_database > vgreduce vg /dev/ramdisk > pvremove /dev/ramdisk > > I haven't put this in real world use, yet. > > On it's face, this might speed up database access. Would we expect it > to speed up database access in real world use? > > Should I document the process so other...

...4 PVs. | | Right now, the third hard drive is damaged; and therefore the third PV | (/dev/sdc1) cannot be accessed anymore. I would like to recover whatever | left in the other 3 PVs (/dev/sda1, /dev/sdb1, and /dev/sdd1). | | I have tried with the following: | | 1. Removing the broken PV: | | # vgreduce --force vg_hosting /dev/sdc1 | Physical volume "/dev/sdc1" still in use | | # pvmove /dev/sdc1 | No extents available for allocation This would indicate that you don't have sufficient extents to move the data off of this disk. If you have another disk then you could try adding...

Hello, I have this bit of code that tries to remove a physical volume from the VG (which consists of /dev/sda5 amd /dev/sdb1): volume_group { "system": ensure => absent, physical_volumes => "/dev/sdb1", } But I get this error: Error: Execution of

Hi, This is my current config: /dev/md0 -> 200 MB -> sda1 + sdd1 -> /boot /dev/md1 -> 36 GB -> sda2 + sdd2 -> form VolGroup00 with md2 /dev/md2 -> 18 GB -> sdb1 + sde1 -> form VolGroup00 with md1 sda,sdd -> 36 GB 10k SCSI HDDs sdb,sde -> 18 GB 10k SCSI HDDs I have added 2 36 GB 10K SCSI drives in it, they are detected as sdc and sdf. What should I do if I

...hat trying to manipulate sdd may cause problems in the future, so am wary of doing anything with it before I clear up this issue. What should my next steps be? I've seen recommendations (in other somewhat similar situations) to try an lvscan or vgscan to refresh the list of volumes; or to try vgreduce --removemissing to remove the now-gone volumes from what LVM thinks is there. I do also still have the original disks, which I could put back and try to get LVM to re-find, but would be a pain. I am hoping to avoid a reboot, since the current LV seems unaffected and is in use, but I can do it if...

Hi All. Looking for some guidance/experience with LVM and pvmove. I have a LUN/PV being presented from a iscsi SAN. The LUN/PV is presented to 5 servers as a shared VG they all have LV's they use for data, they are all connected via iSCSI. As the SAN I am using is being replaced I need to move onto a new unit. My migration strategy at this time is to 1. Present a new LUN from the new SAN

...dev/ramdisk > > > > Even with lv_database being 35G, it doesn't take long to activate the > > mirror. > > > > I haven't decided where to put the commands to turn off the lvm > > mirror. > > lvconvert -m 0 vg/lv_database > > vgreduce vg /dev/ramdisk > > pvremove /dev/ramdisk > > > > I haven't put this in real world use, yet. > > > > On it's face, this might speed up database access. Would we expect it > > to speed up database access in real world use? > > > >...

I'm having some difficulty finding a method to shrink my /home to expand my /.? They both correspond to LVMs.? It is my understanding that one cannot shrink a xfs filesystem.? One must back it up (xfsdump), remove (lvremove) redefine it and then restore it back (xfsrestore). Okay, I'm running into a problem where /home? needs to be "unused".? If tried going in to

Hi guys, I need to move an lvm based domU from one dom0 to another dom0. How do you guys do ths? xm save/restore doesnt have the option to specify lvm target as the storage. Thanks Chris _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

On 06/23/2015 08:10 PM, Marko Vojinovic wrote: > Ok, you made me curious. Just how dramatic can it be? From where I'm > sitting, a read/write to a disk takes the amount of time it takes, the > hardware has a certain physical speed, regardless of the presence of > LVM. What am I missing? Well, there's best and worst case scenarios. Best case for file-backed VMs is

Hi. I''m using Xen on RHEL cluster, and I have strange problems. I gave raw volumes from storage to Xen virtual machines. With windows, I have a problem that nodes don''t see the volume as same one.... for example: clusternode1# clusvcadm -d vm:winxp clusternode1# dd if=/dev/mapper/winxp of=/node1winxp clusternode2# dd if=/dev/mapper/winxp of=/node2winxp clusternode3# dd