Date: Wed, 3 Dec 2014 18:14:47 +1100 From: Peter Jeremy <peter@rulingia.com> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: arch@freebsd.org Subject: Re: enable TRIM by default ? Message-ID: <20141203071447.GC13944@server.rulingia.com> In-Reply-To: <89094.1417506193@critter.freebsd.dk> References: <89094.1417506193@critter.freebsd.dk>
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--3MwIy2ne0vdjdPXF Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2014-Dec-02 07:43:13 +0000, Poul-Henning Kamp <phk@phk.freebsd.dk> wrote: >Isn't it time that we enable TRIM by default in newfs ? As an alternative viewpoint, I have a SSD that got severe indigestion when I tried to enable TRIM: aspire kernel: ad0: TIMEOUT - CFA ERASE retrying (1 retry left) aspire kernel: ad0: WARNING - SETFEATURES SET TRANSFER MODE taskqueue timeo= ut - completing request directly aspire kernel: ata1: error issuing SETFEATURES ENABLE WCACHE command aspire kernel: ata1: error issuing SET_MULTI command aspire kernel: ata1: error issuing WRITE_DMA command The kernel then went to 1 core of interrupt and wedged. I admit that it's about 3 years old but smartctl says it's still got lots of life left in it and googling suggests they are still available. The problem is that if a SSD doesn't support TRIM, it is likely to have all sorts of misbehaviour if you attempt to enable TRIM. If TRIM is enabled by default, you need to provide a simple way to disable it if the system can't cope. --=20 Peter Jeremy --3MwIy2ne0vdjdPXF Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQJ8BAEBCgBmBQJUfrhnXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRFRUIyOTg2QzMwNjcxRTc0RTY1QzIyN0Ux NkE1OTdBMEU0QTIwQjM0AAoJEBall6Dkogs00YUP/0xB3fhjdicqdIDggPyXXYL4 e94jbw7F3oPKgW8dSHMiqE3HZoHvjkn9pN787z0cKqDLWWqCM+CyKApgE687gi5N NSxnL6KGWq1lkCTO2CSMMm9XoYLJgBvAIB+25+YvVjlvAldZECBp2/fE+wTeSeXY dOD6zYfjTPo580Fw1NjjJJ4Hl6wLE763UdqLMKMUk7NvGMOZk/C+BzSJtb9OYFSI ymqfqBjvuK8zEK/WXCi8nZhAJlGTeS8I+2VtMBkiBRSCVigGA0+LtWq7toEdrgK5 zIPp87U62gOf4hDcEscndNOUVf3vT9x6ooZSBiXuD7TMmfiYMFNFbDwLT6vIxeY2 sI/XEiPl4dAAuy4ImSwRfmvm85vQPqXN9VV0iTIddbXT6tQQson7JGiDkZK1m3Kr yMfHd4wWxmv/ud7Uoaslla7+64Vfxr7XNDsXXCgfnQmdfeLkcBTfzs8BXVBDd2ba 9V6qYe6majErd4frI/vy0VgG6A+crZQnOtqGks0tkCWXUMT5EDWAgscVmmcx09kB OqunUJNyoVOHSkZDhmhkfoc/AEFvjjND8gUTVw7fqFfcRXGbV5ecwg9cHWzBO7m3 dShGGDQUtY0+7tMBWb/dCSjN624go9Zc8cuKXcNwRQ/p7gJQp5rhQbx+skQbYome pzkIyeBDrezVL+64CyyD =HxNm -----END PGP SIGNATURE----- --3MwIy2ne0vdjdPXF--
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