Re: Running thin_trim before activating a thin pool

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Il 2022-01-29 18:45 Demi Marie Obenour ha scritto:
Is it possible to configure LVM2 so that it runs thin_trim before it
activates a thin pool? Qubes OS currently runs blkdiscard on every thin
volume before deleting it, which is slow and unreliable.  Would running
thin_trim during system startup provide a better alternative?

I think that, if anything, it would be worse: a long discard during boot can be problematic, even leading to timeout on starting other services. After all, blkdiscard should be faster then something done at higher level.

That said, I seem to remember that deleting a fat volume should automatically trim/discard it if issue_discard=1. Is this not true for thin volumes?
Regards.

--
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
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