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Fri, 19 Jul 2019 05:23:19 -0700 (PDT) Received: from localhost ([213.149.55.147]) by smtp.gmail.com with ESMTPSA id b53sm8697003edd.45.2019.07.19.05.23.18 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 19 Jul 2019 05:23:19 -0700 (PDT) Date: Fri, 19 Jul 2019 14:22:27 +0200 From: Domagoj =?UTF-8?Q?Smol=C4=8Di=C4=87?= To: freebsd-hackers@freebsd.org, Wojciech Puchar Subject: Re: please help translate smartctl output to human language Message-ID: <20190719142227.00005348@gmail.com> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: EDB246B79E X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=HQkzUt40; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of rank1seeker@gmail.com designates 2a00:1450:4864:20::542 as permitted sender) smtp.mailfrom=rank1seeker@gmail.com X-Spamd-Result: default: False [-5.11 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.99)[-0.986,0]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; MID_RHS_MATCH_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]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2.4.5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.5.4.1.0.0.a.2.list.dnswl.org : 127.0.5.0]; IP_SCORE(-1.12)[ip: (-0.18), ipnet: 2a00:1450::/32(-2.93), asn: 15169(-2.43), country: US(-0.05)] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Jul 2019 12:23:22 -0000 On Thu, 18 Jul 2019 21:29:55 +0200 (CEST) Wojciech Puchar wrote: > i am interested how much write-wear does my samsung SSD experienced=20 > relative to maximum allowed. >=20 > on my 500GB samsung SSD smartctl says >=20 > ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE > UPDATED WHEN_FAILED RAW_VALUE > 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail > Always=20 > - 0 > 9 Power_On_Hours 0x0032 093 093 000 Old_age > Always=20 > - 31126 > 12 Power_Cycle_Count 0x0032 099 099 000 Old_age > Always=20 > - 59 > 177 Wear_Leveling_Count 0x0013 095 095 000 Pre-fail > Always=20 > - 88 > 179 Used_Rsvd_Blk_Cnt_Tot 0x0013 100 100 010 Pre-fail > Always=20 > - 0 > 181 Program_Fail_Cnt_Total 0x0032 100 100 010 Old_age > Always=20 > - 0 > 182 Erase_Fail_Count_Total 0x0032 100 100 010 Old_age > Always=20 > - 0 > 183 Runtime_Bad_Block 0x0013 100 100 010 Pre-fail > Always=20 > - 0 > 187 Uncorrectable_Error_Cnt 0x0032 100 100 000 Old_age > Always=20 > - 0 > 190 Airflow_Temperature_Cel 0x0032 073 051 000 Old_age > Always=20 > - 27 > 195 ECC_Error_Rate 0x001a 200 200 000 Old_age > Always=20 > - 0 > 199 CRC_Error_Count 0x003e 100 100 000 Old_age > Always=20 > - 0 > 235 POR_Recovery_Count 0x0012 099 099 000 Old_age > Always=20 > - 28 > 241 Total_LBAs_Written 0x0032 099 099 000 Old_age > Always=20 > - 115175140988 >=20 >=20 >=20 >=20 > All seems fine but i'm not sure if i correctly understand VALUE, > WORST, THRESH data for Total_LBAs_Written >=20 > 50TB was written, so it's 100 times capacity. taking some write=20 > amplification in account (i use geli so no in drive compression have=20 > effect) it would be probably like 150-200. >=20 > Value is 99. It was 100 when i bought it. >=20 > Does it mean that in is 1% worn and can take 100 times more writes > until it fails? or i am too optimistic? > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to > "freebsd-hackers-unsubscribe@freebsd.org" Integers representing VALUE, WORST and THRESH columns are "normalized value= s". Over time, VALUE of Total_LBAs_Written will be declining. Once it reaches THRESH value it is considered 'Old_age', meaning it's prone to all kinds of malfunctions expected from old hardware. That doesn't mean you want be able to use it afterwards. Domagoj Smol=C4=8Di=C4=87