From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: Kernel option to disable TRIM/discard system-wide? Date: Thu, 26 May 2016 22:52:21 -0400 Message-ID: References: <57436FA6.1010801@rabbit.us> <5745A24D.2010601@rabbit.us> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from userp1040.oracle.com ([156.151.31.81]:31378 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932228AbcE0Cwh (ORCPT ); Thu, 26 May 2016 22:52:37 -0400 In-Reply-To: <5745A24D.2010601@rabbit.us> (Peter Rabbitson's message of "Wed, 25 May 2016 15:02:05 +0200") Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Peter Rabbitson Cc: linux-ide@vger.kernel.org >>>>> "Peter" == Peter Rabbitson writes: >> I want to disable trim on my system for good - yet there seems to be >> no kernel boot parameter for this. There's no global way to disable TRIM but you can disable it on a per-device basis by setting /sys/block/sdN/queue/discard_max_bytes to 0. You can force queued TRIM off with noncqtrim if that makes you feel better. However, we haven't blacklisted any drives due to TRIM problems in about a year. -- Martin K. Petersen Oracle Linux Engineering