Changes between Initial Version and Version 2 of Ticket #250


Ignore:
Timestamp:
Nov 22, 2012, 3:11:11 PM (11 years ago)
Author:
Alex Samorukov
Comment:

Implemented in r3703-3708. Instead of using "lookahead" new "rcache" setting was added, because "readahead" has very different meaning.

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  • Ticket #250

    • Property Milestone → Release 6.1
    • Property Resolution → fixed
    • Property Status new → closed

  • Ticket #250 – Description

    initial v2  
    11Most of SCSI/SAS drives are supporting cache control, so it is possible to implement this functionality. This should help a lot for SAS drives behind the RAID - some of them turning off write cache if drive is not "native".
     2
     3Tested on  scsi, megaraid and cciss device types on Linux. It was found that cciss silently filtering MODE SELECT command, so actual values are not changed. On megaraid and direct connection everything works as expected.