Error when creating 2TB file systme using lvm2 in RHEL 5.1

Forum: LinuxTotal Replies: 5
Author Content
rpnalluri

Nov 11, 2008
4:37 PM EST 		Hi,

I am getting below error when i tried to create 2TB file system in RHEL 5.1 using lvm. I have more than 7TB free space on this LV. I can able to create 1TB file system. when i tried to create more than 1TB file system then only i am getting below error.

"lvcreate command failed. Command attempted: "/usr/sbin/lvcreate -n msp-lpggp11 -l 64000 VolGroup00" - System Error Message: device-mapper: reload ioctl failed: Invalid argument Failed to activate new LV."

server is Dell PE2900 and it has 10 internal disks(each is 1TB) which i configured hardware RAID-5 with one hot spare.

Here are the my volume group details.

vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 14
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 7.27 TB
PE Size 64.00 MB
Total PE 119166
Alloc PE / Size 18079 / 1.10 TB
Free PE / Size 101087 / 6.17 TB
VG UUID 0kH1EK-nL6c-WfEz-3o69-ve0v-0uMc-pA2Vlv

pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name VolGroup00
PV Size 7.27 TB / not usable 22.96 MB
Allocatable yes
PE Size (KByte) 65536
Total PE 119166
Free PE 101087
Allocated PE 18079
PV UUID zooWsm-sEUV-kNeC-Qe2a-oX88-3DAn-3BNdMx

Any help would be really appreciated.

Thanks,
Raja
Sander_Marechal

Nov 11, 2008
5:15 PM EST 		What does your syslog say about it? There's a maximum size of lvm volumes, but it should be around 4 terabyte on your system (64MB Physical Extent * 65536).
penguinist

Nov 11, 2008
5:51 PM EST 		Is there a reason that you couldn't be using ext3? I can personally verify that ext3 runs fine on an 8.5 TB raid6 partition (11 active drives + 1 spare).
rijelkentaurus

Nov 11, 2008
8:04 PM EST 		Is this actually Red Hat supplied by Dell, or a clone such as CentOS? If it's Red Hat proper, and not a trial, you have support, so I would not hesitate to give them a call on this one.
Sander_Marechal

Nov 12, 2008
2:19 AM EST 		@penguinist: The OP is talking about LVM. That's on a lower level than filesystems. You create a filesystem inside the LVM volume. LVM volumes are like virtual partitions.
penguinist

Nov 12, 2008
12:30 PM EST 		I was just suggesting that, as an easy workaround, it is possible to create an ext3 filesystem directly on your raid array. You lose some flexibility, but it works fine.

mkfs.ext3 /dev/md0
mount /dev/md0 /path_to_my_mount_point

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