Re: Updating standby mds from 12.2.2 to 12.2.4 caused up:active 12.2.2 mds's to suicide

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(Sorry to spam)

I guess it's related to this fix to the layout v2 feature id:
https://github.com/ceph/ceph/pull/18782/files

-#define MDS_FEATURE_INCOMPAT_FILE_LAYOUT_V2 CompatSet::Feature(8,
"file layout v2")
+#define MDS_FEATURE_INCOMPAT_FILE_LAYOUT_V2 CompatSet::Feature(9,
"file layout v2")

Is there a way to update from 12.2.2 without causing the other active
MDS's to suicide?

Cheers, Dan



On Wed, Feb 28, 2018 at 11:01 AM, Dan van der Ster <dan@xxxxxxxxxxxxxx> wrote:
> More:
>
> here is the MDS_FEATURES map for a running 12.2.2 cluster:
>
> compat: compat={},rocompat={},incompat={1=base v0.20,2=client
> writeable ranges,3=default file layouts on dirs,4=dir inode in
> separate object,5=mds uses versioned encoding,6=dirfrag is stored in
> omap,8=file layout v2}
>
> and here it is on this updated 12.2.4 cluster:
>
> compat compat={},rocompat={},incompat={1=base v0.20,2=client writeable
> ranges,3=default file layouts on dirs,4=dir inode in separate
> object,5=mds uses versioned encoding,6=dirfrag is stored in omap,8=no
> anchor table,9=file layout v2}
>
>
> feature bit 8 is not the same for these two. Am I confused or did
> these features get changed in 12.2.3/4.
>
>
> Cheers, Dan
>
> p.s. yes 12.2.4 is tagged and out -- check your favourite repo.
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