Exadata cellnode flash disklerdeki poor performance durumunu gidermek
Exadata cellnode flash disklerin durumu zaman zaman poor performance olabilmektedir. Eğer , disklerin detaylarına baktığınızda hata sayıları 0(sıfır) yada çok az ise aşağıdaki gibi bu disklerin durumlarını normale çekebilirsiniz.
Cell node’a bağlanıp cellcli komutunu çalıştırıyoruz.
[root@oradb1cel01 ~]# cellcli CellCLI: Release 11.2.3.3.0 - Production on Fri Sep 09 11:34:31 EEST 2016 Copyright (c) 2007, 2013, Oracle. All rights reserved. Cell Efficiency Ratio: 1,178
Durumu “poor performance” olan flash diskleri sorguluyoruz.
CellCLI> LIST PHYSICALDISK WHERE DISKTYPE=flashdisk AND STATUS= 'poor performance' DETAIL name: FLASH_4_0 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_0 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J54 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 0" status: poor performance name: FLASH_4_1 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_1 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J55 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 1" status: poor performance name: FLASH_4_2 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_2 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J59 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 2" status: poor performance name: FLASH_4_3 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_3 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J58 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 3" status: poor performance
Flash disklerin detaylarına bakıyoruz. Buradaki hata sayılarının 0(sıfır) olması tercih ettiğimiz bir durumdur.
CellCLI> list physicaldisk FLASH_4_0 detail; name: FLASH_4_0 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_0 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J54 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 0" status: poor performance CellCLI> list physicaldisk FLASH_4_1 detail; name: FLASH_4_1 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_1 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J55 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 1" status: poor performance CellCLI> list physicaldisk FLASH_4_2 detail; name: FLASH_4_2 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_2 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J59 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 2" status: poor performance CellCLI> list physicaldisk FLASH_4_3 detail; name: FLASH_4_3 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_3 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J58 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 3" status: poor performance
Teker teker tüm flash disklerin durumlarını normale çekiyoruz.
CellCLI> alter lun 4_0 reenable force; LUN 4_0 on physical disk FLASH_4_0 successfully marked to status normal. CellCLI> list physicaldisk FLASH_4_0 detail; name: FLASH_4_0 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_0 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J54 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 0" status: normal CellCLI> alter lun 4_1 reenable force; LUN 4_1 on physical disk FLASH_4_1 successfully marked to status normal. CellCLI> list physicaldisk FLASH_4_1 detail; name: FLASH_4_1 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_1 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J55 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 1" status: normal CellCLI> alter lun 4_2 reenable force; LUN 4_2 on physical disk FLASH_4_2 successfully marked to status normal. CellCLI> list physicaldisk FLASH_4_2 detail; name: FLASH_4_2 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_2 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J59 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 2" status: normal CellCLI> alter lun 4_3 reenable force; LUN 4_3 on physical disk FLASH_4_3 successfully marked to status normal. CellCLI> list physicaldisk FLASH_4_3 detail; name: FLASH_4_3 diskType: FlashDisk errCmdTimeoutCount: 0 errHardReadCount: 0 errHardWriteCount: 0 errMediaCount: 0 errOtherCount: 0 errSeekCount: 0 luns: 4_3 makeModel: "MARVELL SD88SA02" physicalFirmware: D20Y physicalInsertTime: 2011-11-29T10:20:15+02:00 physicalSerial: 1116M08J58 physicalSize: 22.8880615234375G sectorRemapCount: 0 slotNumber: "PCI Slot: 4; FDOM: 3" status: normal
Tekrardan fiziksel diskleri kontrol ettiğimizde hepsinin normale döndüğünü göreceksiniz.
CellCLI> LIST PHYSICALDISK 20:0 E0HLLP normal 20:1 E13ARA normal 20:2 E0J2DH normal 20:3 E0J7LA normal 20:4 E0L5WK normal 20:5 E0JART normal 20:6 E0K77N normal 20:7 E0L6NR normal 20:8 E0Z0QP normal 20:9 KGDAAL normal 20:10 E0E0KN normal 20:11 E0JATZ normal FLASH_1_0 1106M06XVW normal FLASH_1_1 1106M06XWG normal FLASH_1_2 1106M06XUH normal FLASH_1_3 1106M06XWE normal FLASH_2_0 1106M06XDD normal FLASH_2_1 1106M06XDK normal FLASH_2_2 1106M06X07 normal FLASH_2_3 1106M06X5E normal FLASH_4_0 1116M08J54 normal FLASH_4_1 1116M08J55 normal FLASH_4_2 1116M08J59 normal FLASH_4_3 1116M08J58 normal FLASH_5_0 1116M08C6W normal FLASH_5_1 1116M08C6X normal FLASH_5_2 1116M08C6V normal FLASH_5_3 1116M08C6U normal
Son olarak flash cache durumunu da kontrol etmeyi unutmayın.
CellCLI> list flashcache oradb1cel01_FLASHCACHE normal