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Date:      Sat, 01 Dec 2018 21:23:44 +0000
From:      "Poul-Henning Kamp" <phk@phk.freebsd.dk>
To:        Warner Losh <imp@bsdimp.com>
Cc:        ish@amail.plala.or.jp, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
Subject:   Re: How to use trim command ?,Re: How to use trim command ?
Message-ID:  <12404.1543699424@critter.freebsd.dk>
In-Reply-To: <CANCZdfqsVo_mk4TqJy8pmp%2BDQvDSg-cgwxM03%2BxgT5_Y%2BVKvnA@mail.gmail.com>
References:  <7e69211c-6ffb-6155-b17a-a845c0b3586d@grosbein.net> <20181201.093153.893601099798031027.ish@amail.plala.or.jp> <1c7139bd-258c-e7d2-2572-052da3803b3b@freebsd.org> <20181201.202332.546134930481017424.ish@amail.plala.or.jp> <CANCZdfqsVo_mk4TqJy8pmp%2BDQvDSg-cgwxM03%2BxgT5_Y%2BVKvnA@mail.gmail.com>

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--------
In message <CANCZdfqsVo_mk4TqJy8pmp+DQvDSg-cgwxM03+xgT5_Y+VKvnA@mail.gmail=
.com>, Warner Losh writes:
>On Sat, Dec 1, 2018 at 4:41 AM Masachika ISHIZUKA <ish@amail.plala.or.jp>
>wrote:

>>   I think 'fsck_ffs -E' is not suitable for daily midnight cron job.
>
>FreeBSD doesn't have an equivalent of a daemon that runs and trims blocks
>after a while of being idle (trimd on linux I think).

Why would you run 'fsck_ffs -E' in cron anyway ?

If the file-system is has TRIM enabled, it would be a no-op, unless
there are bugs in the fs ?

As for command name:  bio_delete(8) would be my suggestion, but I'm biased=
.

-- =

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    =

Never attribute to malice what can adequately be explained by incompetence=
.



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