Rudi Ahlers
2009-May-11 05:35 UTC
[CentOS] is it possible to resive a PV in LVM and add more LV's ?
Hi all I have a remote server (i.e SSH access only) which was incorrectly partitioned and I urgently need to get it up and running. It's got a 500GB HDD, but the PV is only 10GB big, so I can't add more LV's to to. P.S. This is on LVM, btw. [root at nd11176 ~]# fdisk -l /dev/sda Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 33 265041 83 Linux /dev/sda2 34 1338 10482412+ 8e Linux LVM /dev/sda3 1339 1860 4192965 82 Linux swap / Solaris [root at nd11176 ~]# pvscan PV /dev/sda2 VG VolGroup00 lvm2 [9.97 GB / 0 free] Total: 1 [9.97 GB] / in use: 1 [9.97 GB] / in no VG: 0 [0 ] [root at nd11176 ~]# vgscan Reading all physical volumes. This may take a while... Found volume group "VolGroup00" using metadata type lvm2 [root at nd11176 ~]# lvscan ACTIVE '/dev/VolGroup00/LogVol00' [9.97 GB] inherit So, my question is, if I extend the Physical Volume, what else do I need todo in order to add more Logical Volume's? -- Kind Regards Rudi Ahlers CEO, SoftDux Hosting Web: http://www.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090511/b51e0806/attachment-0004.html>
Peter Kjellstrom
2009-May-11 09:12 UTC
[CentOS] is it possible to resive a PV in LVM and add more LV's ?
On Monday 11 May 2009, Rudi Ahlers wrote:> Hi all > I have a remote server (i.e SSH access only) which was incorrectly > partitioned and I urgently need to get it up and running. It's got a 500GB > HDD, but the PV is only 10GB big, so I can't add more LV's to to. P.S. This > is on LVM, btw.Resizing the PV _can_ be done, but, adding another PV is easier. Once your VG contains a bigger PV or two PVs then you can create any new LVs you want. /Peter -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part. URL: <http://lists.centos.org/pipermail/centos/attachments/20090511/0193abd0/attachment-0004.sig>
John R Pierce
2009-May-11 09:36 UTC
[CentOS] is it possible to resive a PV in LVM and add more LV's ?
Rudi Ahlers wrote:> Hi all > > I have a remote server (i.e SSH access only) which was incorrectly > partitioned and I urgently need to get it up and running. It's got a > 500GB HDD, but the PV is only 10GB big, so I can't add more LV's to > to. P.S. This is on LVM, btw. > > [root at nd11176 ~]# fdisk -l /dev/sda > > Disk /dev/sda: 500.1 GB, 500107862016 bytes > 255 heads, 63 sectors/track, 60801 cylinders > Units = cylinders of 16065 * 512 = 8225280 bytes > > Device Boot Start End Blocks Id System > /dev/sda1 * 1 33 265041 83 Linux > /dev/sda2 34 1338 10482412+ 8e Linux LVM > /dev/sda3 1339 1860 4192965 82 Linux swap / > Solaris > > [root at nd11176 ~]# pvscan > PV /dev/sda2 VG VolGroup00 lvm2 [9.97 GB / 0 free] > Total: 1 [9.97 GB] / in use: 1 [9.97 GB] / in no VG: 0 [0 ] > > [root at nd11176 ~]# vgscan > Reading all physical volumes. This may take a while... > Found volume group "VolGroup00" using metadata type lvm2 > > [root at nd11176 ~]# lvscan > ACTIVE '/dev/VolGroup00/LogVol00' [9.97 GB] inherit > > > > So, my question is, if I extend the Physical Volume, what else do I > need todo in order to add more Logical Volume's?where's the rest of this disk? unpartitioned? create another LVM partition as sda4, and add it to the VolGroup00, then grow LogVol00, and use resize2fs to grow the file system to fill the new LogVol00 size.
Flaherty, Patrick
2009-May-11 17:55 UTC
[CentOS] is it possible to resive a PV in LVM and add more LV's ?
Rudi is right, the easiest/fastest thing to do is to just add the new partition to the pv and expand your lvs as you see fit. But if someone ever wants to resize a pv I have done it on some vm hosts. It a touch scary but straight forward (make backups!). It really can only be done on drives where the lvm is the last partition, or partitions after the lvm partition is perishable data (swap). The steps (from memory lacking arguments) * fdisk -l /dev/sda (whatever the physical drive is) and write down all the partition information (make sure you get block alignment if you've changed that). * remove the exisiting lvm partiton and whatever partitions are after it. * recreate the lvm partition with whatever extra size you want and set it's type. The os won't recognize the extra space. * reboot, the os recognises the space * run pvresize * run pvscan * use vgdisplay to find out how many extents available. if you want to extend a logical volume to the entire pvolume size. * use resize2fs to extend the filesystem on the volume online. * use tune2fs to reduce the number of blocks reserved for root to 1%> -----Original Message----- > From: centos-bounces at centos.org > [mailto:centos-bounces at centos.org] On Behalf Of Rudi Ahlers > Sent: Monday, May 11, 2009 1:35 AM > To: CentOS mailing list > Subject: [CentOS] is it possible to resive a PV in LVM and > add more LV's ? > > Hi all > > I have a remote server (i.e SSH access only) which was > incorrectly partitioned and I urgently need to get it up and > running. It's got a 500GB HDD, but the PV is only 10GB big, > so I can't add more LV's to to. P.S. This is on LVM, btw. > > [root at nd11176 ~]# fdisk -l /dev/sda > > Disk /dev/sda: 500.1 GB, 500107862016 bytes > 255 heads, 63 sectors/track, 60801 cylinders Units = > cylinders of 16065 * 512 = 8225280 bytes > > Device Boot Start End Blocks Id System > /dev/sda1 * 1 33 265041 83 Linux > /dev/sda2 34 1338 10482412+ 8e Linux LVM > /dev/sda3 1339 1860 4192965 82 Linux > swap / Solaris > > [root at nd11176 ~]# pvscan > PV /dev/sda2 VG VolGroup00 lvm2 [9.97 GB / 0 free] > Total: 1 [9.97 GB] / in use: 1 [9.97 GB] / in no VG: 0 [0 ] > > [root at nd11176 ~]# vgscan > Reading all physical volumes. This may take a while... > Found volume group "VolGroup00" using metadata type lvm2 > > [root at nd11176 ~]# lvscan > ACTIVE '/dev/VolGroup00/LogVol00' [9.97 GB] inherit > > > > So, my question is, if I extend the Physical Volume, what > else do I need todo in order to add more Logical Volume's? > > > -- > Kind Regards > Rudi Ahlers > CEO, SoftDux Hosting > Web: http://www.SoftDux.com > Office: 087 805 9573 > Cell: 082 554 7532 > >