From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Woodhouse Subject: Re: Race to power off harming SATA SSDs Date: Mon, 08 May 2017 11:13:10 +0100 Message-ID: <1494238390.6528.42.camel@infradead.org> References: <20170410232118.GA4816@khazad-dum.debian.net> <20170410235206.GA28603@wtj.duckdns.org> <20170507204007.GA25628@atrey.karlin.mff.cuni.cz> <1494228094.6528.14.camel@infradead.org> <1494231215.6528.22.camel@infradead.org> <1494233673.6528.28.camel@infradead.org> <7ee84982-cfad-94d7-4e22-4edbeb852b32@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-8JBH18VD8ApS8F+6emjz" Return-path: In-Reply-To: <7ee84982-cfad-94d7-4e22-4edbeb852b32@redhat.com> Sender: linux-scsi-owner@vger.kernel.org To: Hans de Goede , Ricard Wanderlof Cc: Pavel Machek , Tejun Heo , boris.brezillon@free-electrons.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, linux-mtd@lists.infradead.org, Henrique de Moraes Holschuh List-Id: linux-ide@vger.kernel.org --=-8JBH18VD8ApS8F+6emjz Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2017-05-08 at 11:09 +0200, Hans de Goede wrote: > You're forgetting that the SSD itself (this thread is about SSDs) also ha= s > a major software component which is doing housekeeping all the time, so e= ven > if the main CPU gets reset the SSD's controller may still happily be eras= ing > blocks. We're not really talking about SSDs at all any more; we're talking about real flash with real maintainable software. --=-8JBH18VD8ApS8F+6emjz Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCDzUw ggSvMIIDl6ADAgECAhEA4CPLFRKDU4mtYW56VGdrITANBgkqhkiG9w0BAQsFADBvMQswCQYDVQQG EwJTRTEUMBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFkZFRydXN0IEV4dGVybmFsIFRU UCBOZXR3b3JrMSIwIAYDVQQDExlBZGRUcnVzdCBFeHRlcm5hbCBDQSBSb290MB4XDTE0MTIyMjAw MDAwMFoXDTIwMDUzMDEwNDgzOFowgZsxCzAJBgNVBAYTAkdCMRswGQYDVQQIExJHcmVhdGVyIE1h bmNoZXN0ZXIxEDAOBgNVBAcTB1NhbGZvcmQxGjAYBgNVBAoTEUNPTU9ETyBDQSBMaW1pdGVkMUEw PwYDVQQDEzhDT01PRE8gU0hBLTI1NiBDbGllbnQgQXV0aGVudGljYXRpb24gYW5kIFNlY3VyZSBF bWFpbCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAImxDdp6UxlOcFIdvFamBia3 uEngludRq/HwWhNJFaO0jBtgvHpRQqd5jKQi3xdhTpHVdiMKFNNKAn+2HQmAbqUEPdm6uxb+oYep 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