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Mon, 24 Feb 2020 13:07:32 -0800 (PST) MIME-Version: 1.0 References: <20200224144602.GA64065@phouka1.phouka.net> <437a5eae-03c8-737d-48bf-39e2e9163d6d@nomadlogic.org> In-Reply-To: From: Matt Garber Date: Mon, 24 Feb 2020 16:07:22 -0500 Message-ID: Subject: Re: Running FreeBSD on M.2 SSD To: Mario Olofo Cc: freebsd-stable@freebsd.org X-Rspamd-Queue-Id: 48RF532zM2z4934 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=m0aLZF15; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of mattgarber@gmail.com designates 2607:f8b0:4864:20::730 as permitted sender) smtp.mailfrom=mattgarber@gmail.com X-Spamd-Result: default: False [-3.00 / 15.00]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; IP_SCORE(0.00)[ip: (-9.20), ipnet: 2607:f8b0::/32(-1.88), asn: 15169(-1.67), country: US(-0.05)]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; TAGGED_RCPT(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-stable@freebsd.org]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[0.3.7.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Feb 2020 21:07:37 -0000 On Mon, Feb 24, 2020 at 3:56 PM Mario Olofo wrote: > Hi Matt, > > The ext4 don't have data checksum, but have metadata checksum, which woul= d > probably be corrupted as well, as I reinstalled my Linux over the same > partition the FreeBSD was using, and by > now I have a lot more files on it than I had on FreeBSD. > Mario, Thanks for that clarification; since not all distros necessarily have it based on recency, etc., I didn=E2=80=99t want to assume metadata_csum was e= nabled, but that=E2=80=99s a positive start. Not as thorough as full data checksumm= ing, but you=E2=80=99re probably right that it=E2=80=99s at least a good baseline to= make reasonable judgments about with regard to heavy ext4 use on the same drive. Thanks, =E2=80=94 Matt