[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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I can't reproduce this on vivid w.r.t the hang.
For the release all the devs used in bcache setup; it's certainly
awkward. Fundamentally, there's no path in sysfs that contains both the
cache devs and the backing devs. And AFAIK, there is no way to know
that the bcacheX devices is being cached
+1 on the fail to reproduce. Followed the steps and everything worked
without issues (using kvm/qemu VM with emulated devices and even sda
being backed by a real ssd, but I am not sure the difference gets
propagated).
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Yes you can get rid of bcache0, but you can't re-use the device for
anything unless you reboot ( re bcache or just plain fdisk/parted ).
In fact whether you unmount before stopping the bcache or not doesn't change
the behaviour. I did that this way in the description, to show the process.
You
Strange, I can reproduce each time, I'm using the iso:
ubuntu-14.10-beta2-desktop-amd64.iso from http://releases.ubuntu.com/utopic/
I'm on utopic, with vrit-manager.
Regards.
Le 08/10/2014 13:17, Stefan Bader a écrit :
+1 on the fail to reproduce. Followed the steps and everything worked
** Description changed:
Hi,
I found a bug that crashes the machine if you create a bcache where the
caching device size is bigger than backing device.
This case may happen if you create a bcache with a plan to add a bigger
disk/partition/raid later to it.
To reproduce it
I could not easily reproduce this with a VM according to your instructions. Are
there other factors that are necessary to hit this issue?
When the machine hangs do you have any message printed to the console showing
the backtrace?
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** Also affects: bcache-tools (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1377130
Title:
Crash at creation of bcache if
** Description changed:
Hi,
I found a bug that crashes the machine if you create a bcache where the
caching device size is bigger than backing device.
This case may happen if you create a bcache with a plan to add a bigger
disk/partition/raid later to it.
To reproduce it
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.17 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
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