Messages in this thread | | | Subject | Re: [PATCH v7 08/14] nvmet-core: allow one host per passthru-ctrl | From | Max Gurtovoy <> | Date | Thu, 22 Aug 2019 11:50:41 +0300 |
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On 8/22/2019 3:09 AM, Sagi Grimberg wrote: > >> I don't understand why we don't limit a regular ctrl to single access >> and we do it for the PT ctrl. >> >> I guess the block layer helps to sync between multiple access in >> parallel but we can do it as well. >> >> Also, let's say you limit the access to this subsystem to 1 user, the >> bdev is still accessibly for local user and also you can create a >> different subsystem that will use this device (PT and non-PT ctrl). >> >> Sagi, >> >> can you explain the trouble you meant and how this limitation solve it ? > > Its different to emulate the controller with all its admin > commands vs. passing it through to the nvme device.. (think of format > nvm) > > > we don't need to support format command for PT ctrl as we don't support other commands such create_sq/cq.
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