On 05/09/2011 11:06 PM, Lamar Owen wrote:
> Can you give the output of pvdisplay, vgdisplay, and lvdisplay?
>
> Also, did you align the pv's to 4K sectors when you partitioned?
>
> What does iostat -x tell you?
>
>
pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name VolGroup00
PV Size 931.01 GB / not usable 13.34 MB
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 29792
Free PE 0
Allocated PE 29792
PV UUID eLxFxo-4jHx-RGBA-mAR2-7vnW-YAej-3vPphH
--- Physical volume ---
PV Name /dev/sdb1
VG Name VolGroup00
PV Size 931.51 GB / not usable 11.19 MB
Allocatable yes
PE Size (KByte) 32768
Total PE 29808
Free PE 120
Allocated PE 29688
PV UUID pMtvzy-je8m-uJfY-zEpS-M2Cd-ATW9-o9tfuM
vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 2
Act PV 2
VG Size 1.82 TB
PE Size 32.00 MB
Total PE 59600
Alloc PE / Size 59480 / 1.82 TB
Free PE / Size 120 / 3.75 GB
VG UUID FNqyvW-LWqe-iuV4-1tRJ-Gsrl-sH1X-KyHLpz
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol01
VG Name VolGroup00
LV UUID Ekyo0u-UVOe-Sanz-9Eil-N7J5-vebi-KcRUW2
LV Write Access read/write
LV Status available
# open 1
LV Size 30.00 GB
Current LE 960
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol02
VG Name VolGroup00
LV UUID 2I10tF-PgZP-zUSc-oQi4-am6h-18xv-FfLUJw
LV Write Access read/write
LV Status available
# open 1
LV Size 1.79 TB
Current LE 58512
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol03
VG Name VolGroup00
LV UUID o9SQVk-Ehee-0PS3-e0FC-mb0h-vXwG-wCGvbp
LV Write Access read/write
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol02
VG Name VolGroup00
LV UUID 2I10tF-PgZP-zUSc-oQi4-am6h-18xv-FfLUJw
LV Write Access read/write
LV Status available
# open 1
LV Size 1.79 TB
Current LE 58512
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol03
VG Name VolGroup00
LV UUID o9SQVk-Ehee-0PS3-e0FC-mb0h-vXwG-wCGvbp
LV Write Access read/write
LV Status available
# open 1
LV Size 256.00 MB
Current LE 8
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
[root@cassandra1 ~]# iostat -x
Linux 2.6.18-238.9.1.el5 (cassandra1.xxxxx.com) 05/09/2011
avg-cpu: %user %nice %system %iowait %steal %idle
5.33 0.01 1.00 3.88 0.00 89.78
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz
avgqu-sz await svctm %util
sda 0.03 4.57 0.02 0.79 5.05 42.88
58.66 0.01 7.61 2.04 0.17
sda1 0.01 0.00 0.00 0.00 0.01 0.00
20.89 0.00 2.89 2.84 0.00
sda2 0.02 4.57 0.02 0.79 5.04 42.88
58.69 0.01 7.61 2.04 0.17
sdb 8.28 192.14 43.04 3.85 2855.18 1567.95
94.34 2.22 47.25 4.74 22.22
sdb1 8.28 192.14 43.04 3.85 2855.18 1567.95
94.34 2.22 47.25 4.74 22.22
dm-0 0.00 0.00 0.55 0.59 13.88 4.76
16.23 0.04 34.44 7.02 0.81
dm-1 0.00 0.00 46.71 197.04 2812.84 1576.32
18.01 5.23 21.44 0.89 21.61
dm-2 0.00 0.00 4.19 3.72 33.50 29.75
8.00 1.10 139.24 1.72 1.36
--
S.Ali Ahsan
Senior System Engineer
e-Business (Pvt) Ltd
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