[Bug 921078] Re: FATAL: kernel too old ← how old is too old?

[LaMont Jones]

There are two issues here:

1) For precise armel, we need glibc to support 2.6.24-30-xen as the
minimum kernel revision in order for arm PPAs to work.  If this presents
serious performance issues, please describe them.  Running that forward
to the precise kernel should be an option in the Q timeframe.

2) The error message should be updated to say what the minimum kernel
revision is.

lamont

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Title:
  FATAL: kernel too old ← how old is too old?

Status in “eglibc” package in Ubuntu:
  New

Bug description:
  PPA buildds currently run Hardy, because they require Xen for VM
  security.  This means that all builds of precise packages freak out
  because libc6 isn't upgradable in the build deps:

  	Preparing to replace libc6 2.13-24ubuntu2 (using .../libc6_2.13-24ubuntu4_armel.deb) ...
  	Unpacking replacement libc6 ...
  	FATAL: kernel too old
  	dpkg: warning: subprocess old post-removal script returned error exit status 1
  	dpkg - trying script from the new package instead ...
  	FATAL: kernel too old
  	dpkg: error processing /var/cache/apt/archives/libc6_2.13-24ubuntu4_armel.deb (--unpack):
  	 subprocess new post-removal script returned error exit status 1
  	FATAL: kernel too old
  	dpkg: error while cleaning up:
  	 subprocess installed pre-installation script returned error exit status 1
  	Errors were encountered while processing:
  	 /var/cache/apt/archives/libc6_2.13-24ubuntu4_armel.deb
  	E: Sub-process /usr/bin/dpkg returned an error code (1)

  As a result, nothing at all will build.

  How old is too old?  It would be good to list which minimum kernel
  revision to boot into, so we don't end up having to bisect through
  lots of kernels.  We generally have to do a lot of mangling to try and
  make newer ones work with Xen.

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