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Date: Tue, 07 Oct 2008 10:08:02 +0900 From: Tejun Heo <htejun@...il.com> To: Linda Walsh <lkml@...nx.org> CC: Smartmontools Mailing List <smartmontools-support@...ts.sourceforge.net>, Bruce Allen <ballen@...vity.phys.uwm.edu>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [smartmontools-support] inactive SATA drives won't stay in standby or sleep, PATA models did. (fwd) Linda Walsh wrote: > So the real problem is why issuing a smart command isn't re-starting > the drive -- or bringing it back from standby. Whereas a "normal" disk > read seems to bring it back to normal functioning just fine (and can > then do the smart-test). > > Does this give anyone ideas about where the problem might be? Also > sorta explains why my hangs have been infrequent, because I've been > periodically polling the temps of all the drives -- and only when I stop > the polling would the drive timeout, then die the next morning when > smartd tried to run a short test between 1 and 2 am. Sounds like a firmware problem to me. Issuing ATA_CMD_VERIFY on block 0 before issuing test commands should work around the problem. Also, which controller are you using? Can you post the failing kernel log? -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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