2009-07-27 03:17:51

by Cong Wang

[permalink] [raw]
Subject: Boot panic in 2.6.31-rc4

Hi,

There is a regression in current Linus tree, I can't boot my RHEL5 any more.

I can boot it before 2.6.31, I remember, and also the RHEL5's kernel, of course.
But not since 2.6.31-rc2 or -rc3.

(I used RHEL5's config and did "make oldconfig")

There is a boot panic now, it happened just after loading dm-*
modules, and failed
at not being able to find "/dev/VolGroup00", so I think there is something wrong
with the dm-* modules.

I checked the compiled kernel modules, and found the following difference:

--- /proc/self/fd/11 2009-07-27 10:56:06.975928034 +0800
+++ /proc/self/fd/12 2009-07-27 10:56:06.973928034 +0800
@@ -1,16 +1,13 @@
kernel/drivers/md/dm-crypt.ko
-kernel/drivers/md/dm-emc.ko
-kernel/drivers/md/dm-hp-sw.ko
+kernel/drivers/md/dm-delay.ko
kernel/drivers/md/dm-log.ko
-kernel/drivers/md/dm-mem-cache.ko
-kernel/drivers/md/dm-message.ko
kernel/drivers/md/dm-mirror.ko
kernel/drivers/md/dm-mod.ko
kernel/drivers/md/dm-multipath.ko
-kernel/drivers/md/dm-raid45.ko (<=====Note this one!)
-kernel/drivers/md/dm-rdac.ko
-kernel/drivers/md/dm-region_hash.ko
+kernel/drivers/md/dm-queue-length.ko
+kernel/drivers/md/dm-region-hash.ko
kernel/drivers/md/dm-round-robin.ko
+kernel/drivers/md/dm-service-time.ko
kernel/drivers/md/dm-snapshot.ko
kernel/drivers/md/dm-zero.ko
kernel/drivers/md/faulty.ko
@@ -20,4 +17,4 @@
kernel/drivers/md/raid10.ko
kernel/drivers/md/raid1.ko
kernel/drivers/md/raid456.ko
-kernel/drivers/md/xor.ko
+kernel/drivers/md/raid6_pq.ko

I also tried to make some aliases for dm-region_hash and dm-raid45, but
that still doesn't work...

Am I missing something here? Can anyone help me out?

Thanks!


2009-07-27 04:00:34

by Luming Yu

[permalink] [raw]
Subject: Re: Boot panic in 2.6.31-rc4

CONFIG_SYSFS_DEPRECATED_V2 disabled by default?

On Mon, Jul 27, 2009 at 11:10 AM, Américo Wang<[email protected]> wrote:
> Hi,
>
> There is a regression in current Linus tree, I can't boot my RHEL5 any more.

2009-07-27 05:25:16

by Cong Wang

[permalink] [raw]
Subject: Re: Boot panic in 2.6.31-rc4

On Mon, Jul 27, 2009 at 12:00:33PM +0800, Luming Yu wrote:
>CONFIG_SYSFS_DEPRECATED_V2 disabled by default?
>


Yup, enabling it makes the panic disappear...

Thanks.

P.S. This is newly introduced?