Terrible IO

Gehaktbal

New Member
Feb 24, 2011
1
0
1
Hello,

Im struggling with this for weeks now, the IO rate of the proxmox install is terrible slow.
My second harddrive is working fine (LVM). The local hdd seems to be really slow.

When installing a simple VM in KVM (only have KVM) like debian with 5gb space it takes around 15 minutes to format and IO is going nuts and brings the total load of the whole system to around 13, on the other harddrive its done in a second or 2 and doesnt even affect the IO at all.

I even switched both harddrives to brand new ones in hope to fix this problem, but no luck!

Here are some stats:

dd command:
dd if=/dev/zero of=/tmp/test.bin bs=1M count=2000

Master(proxmox install, hdd1): Around 70% average IO Delay
2097152000 bytes (2.1 GB) copied, 328.337 s, 6.4 MB/s


It seems to work fine on LVM. Cant i reformat the local storage from the proxmox install to LVM ?

PVEDISPLAY:

--- Physical volume ---
PV Name /dev/sdb1
VG Name data
PV Size 465.76 GB / not usable 1.50 MB
Allocatable yes
PE Size (KByte) 4096
Total PE 119234
Free PE 12482
Allocated PE 106752
PV UUID BzCYOe-v0As-6pOm-PRNq-4HdN-bcgq-s9MPiR

--- Physical volume ---
PV Name /dev/sda2
VG Name pve
PV Size 465.26 GB / not usable 1.50 MB
Allocatable yes
PE Size (KByte) 4096
Total PE 119106
Free PE 1023
Allocated PE 118083
PV UUID vhOzaT-kxD2-E036-yWYG-AdEE-0gc1-uC9Oos

VGDISPLAY:


--- Volume group ---
VG Name data
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 24
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 5
Open LV 5
Max PV 0
Cur PV 1
Act PV 1
VG Size 465.76 GB
PE Size 4.00 MB
Total PE 119234
Alloc PE / Size 106752 / 417.00 GB
Free PE / Size 12482 / 48.76 GB
VG UUID F3HrFv-YLqF-c2gK-YhER-Ww3R-SASc-zkcrdC

--- Volume group ---
VG Name pve
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size 465.26 GB
PE Size 4.00 MB
Total PE 119106
Alloc PE / Size 118083 / 461.26 GB
Free PE / Size 1023 / 4.00 GB
VG UUID 7zikDo-sB9I-9Lt7-goVe-9VvT-kpB4-RndPfC

LVDISPLAY:


--- Logical volume ---
LV Name /dev/data/vm-103-disk-1
VG Name data
LV UUID M9ofEh-jTkX-TfBG-J2aC-bv8t-w1R9-96fose
LV Write Access read/write
LV Status available
# open 1
LV Size 60.00 GB
Current LE 15360
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:3

--- Logical volume ---
LV Name /dev/data/vm-105-disk-1
VG Name data
LV UUID aLaXnF-eaiZ-a0Ye-pMr2-O9EC-7Voa-Gd72k0
LV Write Access read/write
LV Status available
# open 1
LV Size 32.00 GB
Current LE 8192
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:4

--- Logical volume ---
LV Name /dev/data/vm-101-disk-1
VG Name data
LV UUID fBLqpC-Wu6X-wioZ-5yZq-aJYd-CCJE-Y49jof
LV Write Access read/write
LV Status available
# open 1
LV Size 160.00 GB
Current LE 40960
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:5

--- Logical volume ---
LV Name /dev/data/vm-106-disk-1
VG Name data
LV UUID QDAeTm-pzn6-CoEA-xE6X-WJNy-0odA-Ee8qO9
LV Write Access read/write
LV Status available
# open 1
LV Size 160.00 GB
Current LE 40960
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:6

--- Logical volume ---
LV Name /dev/data/vm-102-disk-1
VG Name data
LV UUID nVXbMf-9sX6-paMK-7Vok-3dJt-Bub2-TcR572
LV Write Access read/write
LV Status available
# open 1
LV Size 5.00 GB
Current LE 1280
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:7

--- Logical volume ---
LV Name /dev/pve/swap
VG Name pve
LV UUID 8VdJlm-0WvX-vA2Y-GTk2-bWnu-20DA-4tSbzJ
LV Write Access read/write
LV Status available
# open 1
LV Size 7.00 GB
Current LE 1792
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:0

--- Logical volume ---
LV Name /dev/pve/root
VG Name pve
LV UUID 4whIzF-EKYN-U2nV-5PZS-8bVy-TJ7Q-Umej3P
LV Write Access read/write
LV Status available
# open 1
LV Size 96.00 GB
Current LE 24576
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:1

--- Logical volume ---
LV Name /dev/pve/data
VG Name pve
LV UUID JwTR5q-e160-D9G8-pHRZ-GxLy-3OTP-YuoxfJ
LV Write Access read/write
LV Status available
# open 1
LV Size 358.26 GB
Current LE 91715
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:2
 
You should give details about your hardware, used disks and raid controller setup.