PFS mirror problems

[Tomohiro Kusumi]

> This might be related to the bug I reported:
>
> http://bugs.dragonflybsd.org/issues/2915


Lanir,
Based on Tim's report on DragonFly 4.5, what's your uname -r ?



2016-08-24 22:23 GMT+09:00 Tomohiro Kusumi <kusumi.tomohiro at gmail.com>:
> BTW what I mean by unmounting is unmounting hammer, but not PFS (if
> you've null mounted them somewhere or your dfly installer has done
> it).
>
> 2016-08-24 22:14 GMT+09:00 Tomohiro Kusumi <kusumi.tomohiro at gmail.com>:
>> I first saw this in 2014 when I first used DragonFly (I think 3.8).
>> It happened without upgrade or downgrade of PFS.
>>
>> Unmounting once and then mounting again made the slave PFS in sync with master.
>> It may not be possible in your case as yours seem to be / fs.
>>
>>
>>
>> 2016-08-24 12:53 GMT+09:00 Lanir <lanir at cisns.net>:
>>> Hi,
>>>
>>> I think I must have setup the mirroring incorrectly because nothing is
>>> happening. I tried following the guide "how to implement hammer pseudo
>>> file system( pfs ) slave mirroring from pfs master" on the website but
>>> something appears to have gone wrong.
>>>
>>> I have two 7.3tb hammer filesystems spread over two physical disks each
>>> on the same system. I had problems creating the slave PFS so created it
>>> as a master, demoted it, then altered the shared-uuid to match before
>>> trying to mirror it. When I do a mirror-copy I get this result:
>>>
>>> # hammer mirror-copy /usr/stor/backups /usr/backup-stor/pfs/backups
>>> Mirror-read /usr/stor/backups succeeded
>>> #
>>>
>>> The data is obviously not being copied over:
>>>
>>> # df -h /usr/stor /usr/backup-stor
>>> Filesystem                       Size   Used  Avail Capacity  Mounted on
>>> stor1                            7.3T    44G   7.2T     1%    /usr/stor
>>> backup-stor1                     7.3T   1.0G   7.3T     0%
>>> /usr/backup-stor
>>>
>>> As far as I can tell they're setup correctly:
>>>
>>> # hammer pfs-status /usr/stor/backups /usr/backup-stor/backups/ | egrep
>>> '(shared-uuid|operating)'
>>>     shared-uuid=4138d697-3355-11e5-99b1-e13f494aab78
>>>     operating as a MASTER
>>>     shared-uuid=4138d697-3355-11e5-99b1-e13f494aab78
>>>     operating as a SLAVE
>>>
>>>
>>> Can someone help point me towards the problem? I feel like I may have
>>> missed something.
>>>
>>>
>>> Thank you!
>>>
>>>