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Open Source and information security mailing list archives
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Date: Mon, 14 Sep 2009 10:11:14 -0300 From: Henrique de Moraes Holschuh <hmh@....eng.br> To: Tejun Heo <teheo@...e.de> Cc: Chris Webb <chris@...chsys.com>, linux-scsi@...r.kernel.org, Ric Wheeler <rwheeler@...hat.com>, Andrei Tanas <andrei@...as.ca>, NeilBrown <neilb@...e.de>, linux-kernel@...r.kernel.org, IDE/ATA development list <linux-ide@...r.kernel.org>, Jeff Garzik <jgarzik@...hat.com>, Mark Lord <mlord@...ox.com> Subject: Re: MD/RAID time out writing superblock On Mon, 14 Sep 2009, Tejun Heo wrote: > Oooh, another possibility is the above continuous IDENTIFY tries. > Doing things like that generally isn't a good idea because vendors > don't expect IDENTIFY to be mixed regularly with normal IOs and IMHO that means the kernel should be special-casing such commands, then (i.e quiesce drive, do command, quiesce driver, start IO again), probably rate-limiting it for good effect. This is the kind of stuff that userspace should NOT have to worry about (because it will get it wrong and cause data corruption eventually). -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh -- 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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