[Bug 132311] Re: Improve Update Manager's /boot space requirement calculation

2010-04-07 Thread Barry Warsaw
** Changed in: update-manager (Ubuntu)
   Status: In Progress => Fix Released

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Improve Update Manager's /boot space requirement calculation
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[Bug 132311] Re: Improve Update Manager's /boot space requirement calculation

2010-04-05 Thread Kevin Smith
@Barry: No, that was total size, not free space. Subtract out however
much space five 6.10-era kernels would have consumed, along with
whatever other typical /boot files might take up.

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[Bug 132311] Re: Improve Update Manager's /boot space requirement calculation

2010-04-05 Thread Barry Warsaw
@Kevin: cool.  Do youmean that /boot had about 101MB of free space left?
That should definitely have been enough to install a new kernel.  Oh
well, 7.04 was a long time ago :)

Is anybody still seeing this bug on Karmic or Lucid?

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[Bug 132311] Re: Improve Update Manager's /boot space requirement calculation

2010-04-04 Thread Kevin Smith
@Barry: Thanks for the details.

The bug bit me back in 2007 (upgrading to 7.04), so obviously the
details are pretty hazy by now. I mentioned in my bug report that I had
5 kernels in /boot at the time of failure. I just booted up that old
system, and df reports a size of 101086 total 1K blocks. Sorry I can't
give you more details about the state of things back then.

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[Bug 132311] Re: Improve Update Manager's /boot space requirement calculation

2010-04-04 Thread Barry Warsaw
@Kevin: The way UM does its calculation is to count up all the kernels
that are marked to-be-installed, and then simply allocates N KB per new
kernel, which includes the initrd, vmlinux, etc files.  Through
observation I noticed that it's assigning 18*1024*1024 bytes for this,
which on one of my systems is undercounting by 260KB (although on
another system, it's just about right, so hmm...)

IIUC, the code uses statvfs on the underlying /boot file system to
determine how much space is already consumed, so it doesn't have to
count kernels that are already installed specifically.

Do you know how much space you had available in the /boot filesystem
when it failed?

You generally only need one active kernel at a time.  You can probably
use Computer Janitor to clean up those old kernels and free up /boot
space.  Some people feel it's good to keep at least one old (i.e. not
active) known-good kernel around just in case you find a problem with
the one that is active, i.e. the last installed.

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[Bug 132311] Re: Improve Update Manager's /boot space requirement calculation

2010-04-04 Thread Kevin Smith
@Barry: To clarify, when you talk about "per kernel", you are talking
about per kernel that will be installed? As opposed to per kernel
already in /boot. I ask because at the time it failed for me, I may have
had 10 kernels stacked up in /boot. How many kernels get installed?

Maybe you could briefly outline what that calculation is doing so the
rest of us can understand it? Thanks.

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[Bug 132311] Re: Improve Update Manager's /boot space requirement calculation

2010-04-02 Thread Barry Warsaw
** Summary changed:

- update-manager should refuse to upgrade if space is not available
+ Improve Update Manager's /boot space requirement calculation

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