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Message-ID: <CAEhu1-4gv=uAu7K=O6DqeXr05frD4_Yp+0VnRuF_n8mnbaqF6w@mail.gmail.com> Date: Fri, 17 Aug 2012 18:30:11 -0400 From: John Drescher <drescherjm@...il.com> To: LKML <linux-kernel@...r.kernel.org> Subject: mdraid6 problem post 3.5.0 For the last few weeks I have been doing some reliability testing on a mdraid6 array. One of my test was to physically hot remove a raid member disk. This worked flawlessly with gentoo-sources-3.5.0 for the 5 or so times I tried it with my 12 disk + 1 spare mdraid6 array. After pulling a disk a few seconds later the array automatically rebuilds with a spare and after finishing all data checks out via btrfs a scrub. However trying this with gentoo-sources-3.5.2 or the latest kernel.org git sources the machine does not start the rebuild and any access to /proc/mdstat or and disk access that is not in cache for that array just leads to an a long (possibly infinite) wait eventually forcing me to have to use the reset button when the sysrq key combinations fail to shut down the machine. I do see some kernel debug message in the console alt-ctrl-f12 but I was unable to save that to copy. Is this a known problem? If not it may be possible that I could bisect this next week to the patch that causes this behavior. -- John M. Drescher -- 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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