topic Re: Can't extend lv in Operating System - Linux

Can't extend lv

Duffster — Mon, 17 Oct 2011 16:55:04 GMT

Hi,

I have recently increased the size of my pv and I am now attempting to increase the lv but I get the following error:

# vgdisplay
--- Volume group ---
VG Name               VolGroup00
System ID
Format                lvm2
Metadata Areas        1
Metadata Sequence No 20
VG Access             read/write
VG Status             resizable
MAX LV                0
Cur LV                8
Open LV               8
Max PV                0
Cur PV                1
Act PV                1
VG Size               249.97 GB
PE Size               32.00 MB
Total PE              7999
Alloc PE / Size       2013 / 62.91 GB
Free PE / Size       5986 / 187.06 GB
VG UUID               Zme52J-J22F-PisG-oOSQ-wwB2-QJ29-ZpofJk

# lvextend -L +180G /dev/VolGroup00/tmp_vol
Extending logical volume tmp_vol to 182.00 GB
device-mapper: reload ioctl failed: Invalid argument
Failed to suspend tmp_vol

Any ideas on how I can resolve this?

R,
D.

Re: Can't extend lv

Chhaya_Z — Mon, 17 Oct 2011 18:52:17 GMT

Hi,

There are three options to resolve this problem, any one will resolve the problem:

1>Extend the partition size to use the extended space. You can use parted or fdisk (using fdisk, you may need to delete the partition and recreate it with old start cylinder and new end cylinder).

2>Create a new partition in extended space using fdisk /dev/sdX. You can pvcreate on this and extended VG,LV and at last file system also. Replace "X" with proper device name.

3>Inform device-mapper of the underlying changes:

[root@IT-371723 ~]# kpartx -d /dev/mapper/testvg-lvol0
[root@IT-371723 ~]# dmsetup remove /dev/mapper/testvg-lvol0
[root@IT-371723 ~]# vgscan

Regards,

Chhaya

Re: Can't extend lv

Duffster — Tue, 18 Oct 2011 11:26:12 GMT

Hi,

I seen this on the redhat website also but it does not work:

# kpartx -d /dev/mapper/VolGroup00-tmp_vol
# dmsetup remove /dev/mapper/VolGroup00-tmp_vol
device-mapper: remove ioctl failed: Device or resource busy
Command failed

It seems like a standard enough error but nothing on it on the web in terms of resolution???

Re: Can't extend lv

Chhaya_Z — Tue, 18 Oct 2011 11:30:45 GMT

HI,

Check if the device is already mounted. Unmounting the device and then trying might work.

Regards,
Chhaya

Re: Can't extend lv

Duffster — Tue, 18 Oct 2011 13:00:47 GMT

Hi,

I have already tried this and it doesn't make any difference.

Re: Can't extend lv

Modris Bremze — Thu, 20 Oct 2011 08:54:39 GMT

What's the distro/version? What are kernel, device mapper and lvm versions? Do you use a custom kernel?