Difference: HundredGigabitTestingLog (12 vs. 13)

Revision 132011-11-15 - crlb

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META TOPICPARENT name="HundredGigabit"
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 Testing of MegaCLI -PDClear:

  • Test nodes consisted of scdemo06 and scdemo07. In all tests, scdemo06 was used as the client FDT node pushing 89 x 11gigabyte atlas root files contained on the /ssd filesystem to the /ssd filesystem on scdemo07 which was running the FDT server. Both client and server were running under non-priviled accounts, the scheduling algorithm was set to "noop", and the /ssd filesystems on both systems were hosted by XFS filesystems on hardware RAID0 of six OCZ Deneva2 drive, stripe size of 1MB, and write through cache.
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  • The script /opt/versions/scdemo/bin/mrPDClearStart will reset/clear all the drives in bays 2 through 7. The script contains the following:
#!/bin/bash
   set -e
   umount /ssd
   /opt/MegaRAID/MegaCli/MegaCli64 -CfgLdDel -L1 -a0
   /opt/MegaRAID/MegaCli/MegaCli64 -PDClear -Start -PhysDrv[32:2,32:3,32:4,32:5,32:6,32:7] -a0
  • Afterward, you will need to redefine the RAID set, partition and recreate the filesystem.
 
  1. Last test prior to PDClear: Avg: 5.784 Gb/s after 100.00%.
  2. PDClear all drives on scdemo07. RAID0 redefined. XFS filesystem /ssd recreated and remounted.
 
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