Re: [bug] latest -git boot hang

Ingo Molnar
2008-10-10T20:57:23Z

> bisection ongoing. [...]

the result is:

# bad: [f6bccf69] Merge git://git.kernel.org/pub/scm/linux/kernel/gi
# good: [3fa8749e] Linux 2.6.27
# good: [d403a648] Merge phase #1 of git://git.kernel.org/pub/scm/lin
# bad: [ad3316bf] block: Find bio sector offset given idx and offset
# bad: [10865dfa] sg: convert the non-data path to use the block lay
# good: [88e34126] block: update add_partition() error handling
# bad: [4c46501d] block: move holder_dir from disk to part0
# good: [f615b48c] sd/ide-disk: apply extended minors to sd and ide
# bad: [80795aef] block: move capacity from disk to part0
# bad: [ed9e1982] block: implement and use {disk|part}_to_dev()
# bad: [870d6656] block: implement CONFIG_DEBUG_BLOCK_EXT_DEVT

| 870d6656126add8e383645732b03df2b7ccd4f94 is first bad commit
| commit 870d6656126add8e383645732b03df2b7ccd4f94
| Author: Tejun Heo <tj@kernel.org>
| Date: Mon Aug 25 19:47:25 2008 +0900
|
| block: implement CONFIG_DEBUG_BLOCK_EXT_DEVT

and meanwhile 2 other test-systems failed to boot as well - both have
CONFIG_DEBUG_BLOCK_EXT_DEVT=y.

So i guess this debug feature is working as expected.

I guess we should mark CONFIG_DEBUG_BLOCK_EXT_DEVT=y as really dangerous
to enable because contemporary distributions (i tried Fedora 9) fail
with it too?

Ingo