Re: [lustre-devel] RFC: Spill device for Lustre OSD

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On Nov 4, 2025, at 4:54 PM, Jinshan Xiong <[email protected]> wrote:
> On Tue, Nov 4, 2025 at 3:48=E2=80=AFPM Andreas Dilger =
<[email protected]> wrote:
>>=20
>> If the overhead of a local Lustre mount on the OSS is problematic, =
that
>> seems like something which could/should be fixed?  The local mounts =
are
>> already "non-recoverable" so that they do not get an entry in =
last_rcvd
>> and their absence does not cause any recovery issues.
>>=20
>> The main issue we've seen with local mountpoints is that this can =
confuse
>> HA and prevent Lustre module unloading if they are not taken into =
account
>> during cleanup.
>=20
> You're right. That's actually why we didn't do it in the first place. =
If an OSS crashes, it will definitely lead to recovery timeout and =
client eviction.

If an OSS crash with a local mountpoint is causing recovery timeouts,
then that seems like a bug to be fixed.  This was changed by Alex Z.
in patch "LU-12722 target: disable recovery for local clients" back in
commit v2_13_52-45-g8bd04b4e57.

Cheers, Andreas






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