How is trim enabled in Ubuntu 15.04?

Question

Does it work once a week or does it continually trim the system? I have seen answers for this but they refer to Ubuntu 14.04 but not to Ubuntu 15.04

there is weekly cron job but you need to enable no checking for device model. Ill link relevant post in a minute — Sergiy Kolodyazhnyy, Sep 29 '15 at 13:33
That was for Ubuntu 14.04. For Ubuntu 15.04 there is no model check needed or necessary. It just does not say though how often the check is done. — Ervin Dine, Sep 30 '15 at 15:24
For Ubuntu 15.04 this is the output of the cron file. #!/bin/sh
trim all mounted file systems which support it

/sbin/fstrim --all || true — Ervin Dine, Sep 30 '15 at 15:24
@ErvinDine if it's a cron file, by virtue of being a cron file, it's known how often it runs. Where exactly is it located? — muru, Sep 30 '15 at 15:41
@muru it is in weekly ;) and it is the same as in 14.04 and it is in 15.04. Though more models work out of the box. — Rinzwind, Sep 30 '15 at 16:35
@ErvinDine still a dupe. The correct way is to add differnces for 15.04 to that answer ;) I myself have not seen any differences in usage between trim in 14.04 and 15.04 — Rinzwind, Sep 30 '15 at 16:37

score 0 · Answer 1 · answered Dec 28 '15 at 06:00

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fstrim has changed in Ubuntu 15.04 compared to previous version. fstrim-all --no-model-check is now called as fstrim --all. There is no more option to desiable model-check.

/etc/cron.weekly/fstrim does now contain:

#!/bin/sh
# trim all mounted file systems which support it
/sbin/fstrim --all || true

So you don't need to change anything in Ubuntu 15.04 concerning TRIM

answered Dec 28 '15 at 06:00

Raphael Roth

111

1

Ah, the change happened in the previous version (14.10), not in 15.04, as the dupe post says. – muru Dec 28 '15 at 06:58

How is trim enabled in Ubuntu 15.04?

trim all mounted file systems which support it

1 Answers1