Messages in this thread | | | Date | Fri, 17 Aug 2012 18:57:44 -0400 | Subject | Re: mdraid6 problem post 3.5.0 | From | John Drescher <> |
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On Fri, Aug 17, 2012 at 6:30 PM, John Drescher <drescherjm@gmail.com> wrote: > 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. >
The same problem appears on gentoo-sources-3.5.1 so it appears this problem was introduced between kernels 3.5.0 and 3.5.1. I will have to debug this next week..
John
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