From nobody Tue May 30 16:25:13 2023 X-Original-To: freebsd-questions@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4QVyRh3ZkBz4XmYb for ; Tue, 30 May 2023 16:25:20 +0000 (UTC) (envelope-from Lena@lena.kiev.ua) Received: from lena.kiev.ua (lena.kiev.ua [185.45.113.66]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4QVyRd1Mxlz3JRy for ; Tue, 30 May 2023 16:25:17 +0000 (UTC) (envelope-from Lena@lena.kiev.ua) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=lena.kiev.ua header.s=3 header.b=BVeilNGa; spf=pass (mx1.freebsd.org: domain of Lena@lena.kiev.ua designates 185.45.113.66 as permitted sender) smtp.mailfrom=Lena@lena.kiev.ua; dmarc=pass (policy=none) header.from=lena.kiev.ua DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lena.kiev.ua; s=3; h=In-Reply-To:Content-Type:Mime-Version:References: Message-ID:Subject:To:From:Date:Sender:Reply-To:Cc:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=wD1amMjh61UHroPNJ4UF6RmGAKZ3TNTvwgbEPkokUHM=; b=BVeilNGaz9NtKvO3IEx3pXeqpo azk4VaTyPd+5Mmp4wbLOkdCQ2B7re9iG8y1rHOA2ToriUXCAt7KVzW0gl7styM3Nq1CcH4vtBNOcM cpgyrxa9t5bnLfjyd05yEEIUqPytt9KrgPqlOh07t7hSC1P8GtMVWcBxudxRZVYaNrVM=; Received: from [188.237.132.47] (helo=bedside.lena.kiev.ua) by lena.kiev.ua with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96 (FreeBSD)) (envelope-from ) id 1q429t-0001AI-0x for freebsd-questions@FreeBSD.org; Tue, 30 May 2023 19:25:19 +0300 Received: from bedside.lena.kiev.ua (localhost.lena.kiev.ua [127.0.0.1]) by bedside.lena.kiev.ua (8.17.1/8.16.1) with ESMTP id 34UGPDvw009487 for ; Tue, 30 May 2023 19:25:13 +0300 (EEST) (envelope-from Lena@lena.kiev.ua) Received: (from lena@localhost) by bedside.lena.kiev.ua (8.17.1/8.16.1/Submit) id 34UGPDiE009486 for freebsd-questions@FreeBSD.org; Tue, 30 May 2023 19:25:13 +0300 (EEST) (envelope-from Lena@lena.kiev.ua) Date: Tue, 30 May 2023 19:25:13 +0300 From: Lena@lena.kiev.ua To: freebsd-questions@FreeBSD.org Subject: Re: read and write back full disk to trigger relocation Message-ID: <20230530162513.GK1030@lena.kiev> References: <1957739901.520492.1685310340560@ichabod.co-bxl> List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1957739901.520492.1685310340560@ichabod.co-bxl> User-Agent: Mutt/1.4.2.3i Return-Receipt-To: Lena@lena.kiev.ua X-Spamd-Result: default: False [-6.19 / 15.00]; DWL_DNSWL_MED(-2.00)[lena.kiev.ua:dkim]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.99)[-0.990]; DMARC_POLICY_ALLOW(-0.50)[lena.kiev.ua,none]; RCVD_DKIM_ARC_DNSWL_MED(-0.50)[]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+a]; RCVD_IN_DNSWL_MED(-0.20)[185.45.113.66:from]; R_DKIM_ALLOW(-0.20)[lena.kiev.ua:s=3]; MIME_GOOD(-0.10)[text/plain]; DKIM_TRACE(0.00)[lena.kiev.ua:+]; MLMMJ_DEST(0.00)[freebsd-questions@FreeBSD.org]; FROM_NO_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_EQ_ENVFROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; TO_DN_NONE(0.00)[]; ASN(0.00)[asn:29141, ipnet:185.45.112.0/22, country:DE] X-Rspamd-Queue-Id: 4QVyRd1Mxlz3JRy X-Spamd-Bar: ------ X-ThisMailContainsUnwantedMimeParts: N > From the dd(1) manpage: > > Do a refresh of a disk drive, in order to prevent presently recoverable > read errors from progressing into unrecoverable read errors: > > dd if=/dev/ada0 of=/dev/ada0 bs=1m > > That won't trigger relocation, but it will refresh the decaying data. Would that be useful for SSD?