Date: Mon, 08 Mar 2010 12:31:24 +0200 From: Alexander Motin <mav@FreeBSD.org> To: Eugeny N Dzhurinsky <bofh@redwerk.com>, FreeBSD-Current <freebsd-current@freebsd.org> Subject: Re: A tool for remapping bad sectors in CURRENT? Message-ID: <4B94D1FC.1050407@FreeBSD.org> In-Reply-To: <mailpost.1268044056.2992919.61277.mailing.freebsd.current@FreeBSD.cs.nctu.edu.tw> References: <mailpost.1268044056.2992919.61277.mailing.freebsd.current@FreeBSD.cs.nctu.edu.tw>
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Eugeny N Dzhurinsky wrote: > Recently I've started to see the following logs in messages: > > Mar 8 12:00:24 localhost smartd[795]: Device: /dev/ad4, 2 Currently unreadable (pending) sectors > Mar 8 12:00:24 localhost smartd[795]: Device: /dev/ad4, 2 Offline uncorrectable sectors > > smartctl did really show that something is wrong with my HDD, but still no > remaps - just read errors. > > SMART Self-test log structure revision number 1 > Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error > # 1 Extended offline Completed: read failure 60% 1198 222342559 > # 2 Extended offline Completed: read failure 60% 1187 222342557 > # 3 Extended offline Completed: read failure 60% 1180 222342559 > # 4 Short offline Completed without error 00% 1178 - > # 5 Extended offline Aborted by host 90% 1178 - > > and > > ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE > ... > Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 > ... > > Now can I find out which file owns the LBAs 222342557 and 222342559 ? How do I > force remapping of these sectors? I assume that I have to write something > directly to the sectors? You may try to overwrite these sectors with dd. It should trigger sector reallocation. To be sure, you may read them before and after the write. -- Alexander Motin
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