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Bug#853927: debian-installer: Hang in os-prober in "dmsetup create -r osprober-linux-sda1"

On Thu, Feb 02, 2017 at 07:12:20PM +1100, Scott Leggett wrote:
>Package: debian-installer
>Severity: important
>Tags: d-i
>Dear Maintainer,
>I tried to install Debian Stretch using the RC1 installer onto my
>Thinkpad T430.
>Installation hung at the install-grub step instead of completing
>By opening a console on a VT, I saw that the installer was hung in the
>os-prober step. Since there is no other OS on this machine, I killed the
>process at the end of the os-prober process tree, which was `dmsetup
>create -r osprober-linux-sda1`.
>This caused installation to continue and complete successfully without
>any error notification.
>I use a custom partitioning set-up, so I thought that possibly could be
>the cause of the hang if it's something that the os-prober script can't
>handle?  This machine uses UEFI and has a EFI System Partition at the
>front of sdb.

ACK. There's a problem with os-prober 1.73 if you're using LVM on the
target which causes this. The fix is already in the archive in 1.74
(as of yesterday) and included in the latest RC2 installer so this
shouldn't be an issue for long.

See #853277 for more details.

Steve McIntyre, Cambridge, UK.                                steve@einval.com
Is there anybody out there?

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