try changing this in /kernel/drv/sd.conf

sd-config-list=
        "",
"retries-timeout:1,retries-busy:1,retries-reset:1,retries-victim:2",


to

sd-config-list=
        "",
"retries-timeout:1,retries-busy:1,retries-reset:1,retries-victim:2,physical-blocksize:4096",

and if any of the other entries matches your disk/ssd and sets it to 4k,
remove it.

after that, update_drv -vf and try again replacing your disk. worked for
me, even if update_drv tells that it needs to be rebooted. ignore it...


Am 20.09.2016 um 06:49 schrieb 郑圆杰:
> Hi Joshua
> Thank you very much!
> The original disk driver just report logical sector size 512 byte without a 
> physical sector size. We create the zpool with default setting.
> And zfs use logical sector size as ashift if physical sector size do not 
> reported.
> The replacement disk is a different model that report logical sector size 512 
> byte and physical sectory size 4k.
> Memtioned in https://smartos.org/bugview/OS-4718. Zfs will mismatch the 
> alignment.
> 
> 
> 在 16/9/20 11:53,“Joshua M. Clulow”<j...@sysmgr.org> 写入:
> 
>     On 19 September 2016 at 20:12, 郑圆杰 <zhengyuan...@briphant.com> wrote:
>     > I have created an zpool with ashift=9.
>     
>     How did you do this?  Just by using disks with native 512 byte
>     sectors, or through some other mechanism?
>     
>     > Now  a disk is out of service. And I try to replace with a new disk.
>     
>     Is the replacement disk a different model from the original disk?
>     
>     > Unfortunately, new disk reports that the physical sector size is 4k. 
> Some error occurs when trying exec command “zfs replace”/ “zfs attach”.
> 
> Do you know if the new disk is an "Advanced Format" disk (aka "512e")?
>  That is: does the new disk present 4KB physical sectors, but provide
> emulation for legacy 512 byte sectors?
> 
> If the new disks are 4K native, I'm afraid you cannot use them in an
> ashift=9 pool.  If the disks _do_ provide an emulated 512 byte logical
> sector size, you might be hitting this bug:
> 
> https://smartos.org/bugview/OS-4718
> 
> If these _are_ Advanced Format (512e) disks, you might want to try
> this custom patched platform:
> 
> https://us-east.manta.joyent.com/jmc/public/tmp/platform-20160904T224833Z-OS-4718.tgz
> 
> This custom platform image includes an attempted fix for OS-4718 which
> should help.  Source diff for the platform build is here:
> 
> https://gist.github.com/jclulow/ccb00c396c2f6961672494ef2dbdee66
> 
> Let me know how it goes!
> 
> Cheers.
> 
> --
> Joshua M. Clulow
> UNIX Admin/Developer
> http://blog.sysmgr.org
> 


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