** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
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Title:
btrfs blocks root filesystem mount on 15.04
To manage
** Changed in: linux (Ubuntu)
Status: Confirmed = Fix Committed
** Also affects: linux (Ubuntu Vivid)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Vivid)
Importance: Undecided = High
** Changed in: linux (Ubuntu Vivid)
Status: New = Fix Committed
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3.19.0-18 also works. It boots when 3.19.0-16 doesn't.
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Title:
btrfs blocks root filesystem mount on 15.04
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That is great news. The Ubuntu 3.19.0-18 kernel has the upstream 3.19.8
upstream stable updates, so Vivid will have this fix when 3.19.0-18 is
released.
I build a 3.19.0-18 Vivid kernel with what is currently in the master-
next branch. Can you see if this kernel also fixes the bug? It can be
I can easily reproduce the problem if I do unclean shutdown. After that,
it doesn't boot. 3.13.0 boots without issues.
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Title:
btrfs blocks root
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.1 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
That's good news, so this is fixed upstream. We can perform a Reverse
bisect to identify the exact commit that fixes this.
First, can you test the latest upstream 3.19 kernel to see if the fix in
mainline was already sent to stable? It can be downloaded from:
Did few more reboots, and I can confirm that it does solve the problem.
Reproduced the problem multiple times with 3.19, while I couldn't with
4.1.
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I've tested it with '4.1.0-040100rc3-generic #201505102036'. I've forced
shutdown 4 times and each time it booted up fine with this kernel. Then,
5th time I tried booting 3.19.0 and it failed. I rebooted with
'4.1.0-040100rc3-generic #201505102036' and it booted just fine. So, it
looks like this
I can't reproduce it with 3.19.8.
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Title:
btrfs blocks root filesystem mount on 15.04
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Can you not reproduce the bug after you once booted into 3.13?
** Changed in: linux (Ubuntu)
Importance: Undecided = High
** Tags added: kernel-da-key
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Tried older 3.16.0, same result. 3.13 booted fine. Next reboot, after
3.13, 3.19 also booted fine.
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Title:
btrfs blocks root filesystem mount on
Well, filesystem was not mounted, I could not collect logs, which
haven't been written.
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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** Attachment added: IMAG0723.jpg
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1454796/+attachment/4396935/+files/IMAG0723.jpg
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Title:
** Attachment added: IMAG0727.jpg
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1454796/+attachment/4396936/+files/IMAG0727.jpg
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Title:
This is actually a second time it happened. First time it was with
3.16.0 a month ago. Multiple reboots, power off/on, nothing helped. At
that time I didn't collect any additional data. Now, second time it
happened, symptoms were exactly the same - and way to fix it was exactly
the same. I usually
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