Bug 417213

Summary:	install-amd64-minimal-20120517 live system fails after mounting a btrfs volume.
Product:	Gentoo Release Media	Reporter:	Light <sgsdxzy>
Component:	InstallCD	Assignee:	Gentoo Release Team <releng>
Status:	RESOLVED WONTFIX
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	AMD64
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Light 2012-05-23 06:32:42 UTC

When I try to install gentoo amd64 in a subvolume of a btrfs volume alongside with my Archlinux i686 already on another subvolume using minimal installation CD-20120517 on an usb flash disk, after I mount the volume on /mnt, the live system seems to fail: I can't run any command(ls for example). It says /bin/***:command not found. When I then try to cd into /bin, bash reports: /bin:No such file or directory. And even reboot command is missing, I have to cut the power off. I tried many times, checksum, changed the usb interface, re-dd the usb flash disk and get the same result. Finally I used the x86-64 live CD of Archlinux and finished the installation :) .

Reproducible: Always

Steps to Reproduce:
1.# mount /dev/sda10 /mnt (It doesn't matter if I use -o subvol=*** or just the root volume)
2.the system fails
Actual Results:  
Can't use any command and many directories are missing like /bin .

Expected Results:  
Nothing should happen...... It should just mount the volume.

The btrfs filesystem is lzo compressed, but first the kernel in the liveCD should support it(3.2.*, Arch's 3.0 is doing fine), then only the data stored is compressed, I am not forcing gentoo to read and write any compressed data, fianlly it shouldn't corrupt the whole live system. The filesystem itself is not corrupted though.

Comment 1 Jorge Manuel B. S. Vicetto (RETIRED) gentoo-dev

2012-05-26 21:17:24 UTC

The minimal CD does not have explicit support for brtfs yet. When it becomes (more?) stable, we'll reconsider it.
If you want to try brtfs support, please test the admin-cd - bug 352152