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