Since you can't start osd with 0.94(without data change), I think it's safe to start 0.87 again. On Sat, May 23, 2015 at 12:46 PM, Mingfai <mingfai.ma@xxxxxxxxx> wrote: > thx for your info. > > My installation was upgraded with "ceph-deploy install --release hammer > HOST", and it can't be downgrade with "--release giant" as stated clearly in > a warning message in the doc saying "Important Once you upgrade a daemon, > you cannot downgrade it.". > > I plan to do a clean installation of the old 0.87 version to recover my > data, with the old keyring and conf. Any important thing to note for this > kind of data recovery work? thx > > regards, > mingfai > > On Sat, May 23, 2015 at 10:59 AM, Haomai Wang <haomaiwang@xxxxxxxxx> wrote: >> >> Experimental feature like keyvaluestore won't support upgrade from 0.87 to >> 0.94. >> >> Sorry >> >> On Sat, May 23, 2015 at 7:35 AM, Mingfai <mingfai.ma@xxxxxxxxx> wrote: >> > hi, >> > >> > I have a ceph cluster that use keyvaluestore-dev. After upgraded from >> > v0.87 >> > to v0.94.1, and changed the configuration (removed "-dev" suffix and >> > added >> > "enable experimental ..."), OSD is still fail to start, with the >> > following >> > error: >> > 7fb8b06ce900 -1 osd.0 0 OSD::init() : unable to read osd superblock >> > 7fb8b06ce900 -1 ** ERROR: osd init failed: (22) Invalid argument >> > >> > any idea if such upgrade is supported? how can I troubleshoot the >> > problem? >> > thx >> > >> > regards, >> > mingfai >> > >> > >> > >> > >> > >> > _______________________________________________ >> > ceph-users mailing list >> > ceph-users@xxxxxxxxxxxxxx >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > >> >> >> >> -- >> Best Regards, >> >> Wheat > > -- Best Regards, Wheat _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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