Is there a definitive approach / guide / manual / wiki as to how to properly work / replace 4k - 512 - 512e disks? This has been asked before, here and in some other lists and obviously continues to be a source of problems and confusion...
On Sep 19, 2016 11:54 PM, "Joshua M. Clulow" <[email protected]> wrote: > On 19 September 2016 at 20:12, 郑圆杰 <[email protected]> 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 > ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
