Messages in this thread | | | Date | Mon, 16 Aug 2010 23:32:15 +0800 | Subject | Re: [lvm-devel] [dm-devel] linux-2.6.35+ causes LVM to fail with " device-mapper: version ioctl failed: Inappropriate ioctl for device" | From | Jeff Chua <> |
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On Mon, Aug 16, 2010 at 10:22 PM, Alasdair G Kergon <agk@redhat.com> wrote: > On Mon, Aug 16, 2010 at 03:56:48PM +0200, Zdenek Kabelac wrote: >> Dne 15.8.2010 16:13, Jeff Chua napsal(a): >> > With 2.6.35++, /dev/mapper/control has moved from 60 to 236! > > The latest LVM package made an assumption that it would be set up > correctly by udev (or manually in your case). We are updating > the userspace libdevmapper code to handle your circumstances > automatically.
It'll be nice if lvm returns a more meanful message like "ioctl failed. Check /proc/misc to ensure the device is mapped correctly."
To take care of it automatically with udev, I'm doing this in rc.S
if [ -f /sys/devices/virtual/misc/device-mapper/dev ] then NODE=$(</sys/devices/virtual/misc/device-mapper/dev) rm -f /dev/mapper/control mknod /dev/mapper/control c ${NODE/:/ } fi
>> > # vgchange -a n vg01 >> > Internal error: Maps lock 14217216 < unlock 14221312 >> > Internal error: Maps lock 14221312 < unlock 14225408 >> > Internal error: Maps lock 14225408 < unlock 14229504 >> > Internal error: Maps lock 14229504 < unlock 14233600 >> > Internal error: Maps lock 14233600 < unlock 14237696 >> > Internal error: Maps lock 14237696 < unlock 14241792 >> > 0 logical volume(s) in volume group "vg01" now active > >> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d7824370e26325c881b665350ce64fb0a4fde24a > > For those interested, originally we used mlockall() but in non-C locales > on some distributions glibc is configured to map 80MB+ of locale data > into memory without offering any way to unmap it. We don't need > that data locked and it increased the minimum memory required to install > a distribution as well as slowing down the LVM tools! So we had to > write a customised version that tries to skip locking unnecessary pages > like those.
I see that now it's fixed with that commit.
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