On Mon, Aug 5, 2019 at 11:43 AM Ilya Dryomov <[email protected]> wrote:
> On Tue, Jul 30, 2019 at 10:33 AM Massimo Sgaravatto > <[email protected]> wrote: > > > > The documentation that I have seen says that the minimum requirements > for clients to use upmap are: > > > > - CentOs 7.5 or kernel 4.5 > > - Luminous version > > Do you have a link for that? > > This is wrong: CentOS 7.5 (i.e. RHEL 7.5 kernel) is right, but for > upstream kernels it is 4.13 (unless someone did a large backport that > I'm not aware of). > Yes sorry: 4.13 ! > > > > > But in general ceph admins could not have access to all clients to check > these versions. > > > > In general: is there a table somewhere reporting the minimum "feature" > version supported by upmap ? > > > > E.g. right now I am interested about 0x1ffddff8eea4fffb. Is this also > good enough for upmap ? > > Yeah, this is annoying. The missing feature bit has been merged into > 5.3, so starting with 5.3 the kernel client will finally report itself > as luminous. > > In the meantime, use this: > > $ cat /tmp/detect_upmap.py > if int(input()) & (1 << 21): > print("Upmap is supported") > else: > print("Upmap is NOT supported") > > $ echo 0x1ffddff8eea4fffb | python /tmp/detect_upmap.py > Upmap is supported > Great !! Thanks a lot ! Cheers, Massimo
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