[OmniOS-discuss] 答复: Writeback Cache Auto disabled

dwq at xmweixun.com dwq at xmweixun.com
Wed May 6 07:49:48 UTC 2015

Hi Richard

         I use stmfadm modify-lu –p wcd=false LU Name, change write cache to enable,but when client read  or wirte io  from lu,lu status (writeback cache) change to disable again.




Best Regards,
Deng Wei Quan / 邓伟权

Mob: +86 13906055059

Mail: dwq at xmweixun.com <mailto:dwq at xmweixun.com> 



发件人: dwq+auto_=dengweiquan=139.com at xmweixun.com [mailto:dwq+auto_=dengweiquan=139.com at xmweixun.com] 代表 Richard Elling
发送时间: 2015年5月5日 23:17
收件人: dwq at xmweixun.com
抄送: omnios-discuss at lists.omniti.com
主题: Re: [OmniOS-discuss] Writeback Cache Auto disabled



On May 5, 2015, at 12:54 AM, <dwq at xmweixun.com <mailto:dwq at xmweixun.com> > <dwq at xmweixun.com <mailto:dwq at xmweixun.com> > wrote:


Hi All,

         When I present lu to hpux or aix, lu writeback cache auto disabled,why?


In SCSI, initiators can change the write cache policy.

 — richard


LU Name: 600144F00000000000005548DC360005

    Operational Status: Online

    Provider Name     : sbd

    Alias             : /dev/zvol/rdsk/wxnas/hpuxtest03

    View Entry Count  : 1

    Data File         : /dev/zvol/rdsk/wxnas/hpuxtest03

    Meta File         : not set

    Size              : 21474836480

    Block Size        : 512

    Management URL    : not set

    Vendor ID         : SUN     

    Product ID        : COMSTAR         

    Serial Num        : not set

    Write Protect     : Disabled

    Writeback Cache   : Disabled

Access State      : Active






SunOS wxos1 5.11 omnios-b281e50 i86pc i386 i86pc



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Richard.Elling at RichardElling.com <mailto:Richard.Elling at RichardElling.com> 


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