Date: Sat, 01 Dec 2018 20:23:32 +0900 (JST) From: Masachika ISHIZUKA <ish@amail.plala.or.jp> To: freebsd-hackers@freebsd.org Subject: Re: How to use trim command ?,Re: How to use trim command ? Message-ID: <20181201.202332.546134930481017424.ish@amail.plala.or.jp> In-Reply-To: <1c7139bd-258c-e7d2-2572-052da3803b3b@freebsd.org> References: <7e69211c-6ffb-6155-b17a-a845c0b3586d@grosbein.net> <20181201.093153.893601099798031027.ish@amail.plala.or.jp> <1c7139bd-258c-e7d2-2572-052da3803b3b@freebsd.org>
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>> I misunderstood trim was equivalent to fstrim in linux. >> I undotstood that the trim command is the SSD bulk erase tool. > > If you want to enable TRIM on a UFS filesystem, tunefs is the command > you are looking for. Thank you for mail. I'm using 'tunefs -t enable /dev/ada0pXX', that is equivalent to 'discard' in fstab on linux. > The equivalent to fstrim for UFS is fsck_ffs -E: I think 'fsck_ffs -E' is not suitable for daily midnight cron job. -- Masachika ISHIZUKA
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