Re: [gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
On Sat, Oct 11, 2008 at 12:00 AM, David Wei [EMAIL PROTECTED] wrote:
Thanks Andrey, that patch works , my test kernel dose not ask for the floppy
before the panic. Just by the way,dose that mean I cannot use floppy drive on
this box?
You can use the floppy drive, but the kernel cannot run init / use
initrd from a floppy (i.e. you are not allowed to use root=/dev/fd0 or
initrd=/dev/fd0). This is because the floppy is fallback code if the
NFS mount of / fails.
But this is Gentoo, you make your own kernel (hopefully), and never
have to worry about initrd.
/ and /dev/root are used interchangeably, for readabilty, similar to /
and /dev/hdaX.
All I did was comment out the floppy fallback code.
This is how mount_root was originally written:
If CONFIG_ROOT_NFS is defined
If root device is NFS
If the NFS root mounted
Return
Print message VFS: Unable to mount root fs via NFS, trying floppy.\n
Set root device as floppy disk 0
If CONFIG_BLK_DEV_FD (floppy disk) is defined
If the root device is a floppy
If dual initrd/ramload is enabled
If the first partition of the ramdisk image could be
loaded into memory
Set the root device as a ramdisk
Set the root device name as null
Else
Prompt for root floppy
If CONFIG_BLOCK is defined
Create a device named /dev/root with the major minor modes
equal to the root device
Mount /dev/root with root device mountflags
If you want more detail, you should post to lkml.
All I have done was replace the following line:
If CONFIG_BLK_DEV_FD (floppy disk) is defined
with
If false
}
Thanks again!!
No problem.
In reality, the fix was simple.
All I did was grep the source tree for the exact string (grep -R VFS:
Unable to mount root fs via NFS, trying floppy .
)
Then open up vim (or emacs or nano), find the line, and add an #if 0
... #endif block where needed.
On Fri, 10 Oct 2008 23:06:09 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
On Fri, Oct 10, 2008 at 10:33 PM, David Wei [EMAIL PROTECTED] wrote:
Sorry, I forgot that file .
the .config is in the attachment this time.
Thank you .
On Fri, 10 Oct 2008 10:05:36 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
2008/10/10 David Wei [EMAIL PROTECTED]:
Hi,
I am trying kexec with kernel panic reboot cause i have to manage my
server remotely.
the kernel panic reboot
(http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has beening working so
good so far for the regular kernel panic.However,sometimes when i were
missed some file system items,the booking process would ask me:
VFS: Unable to mount root fs via NFS,trying floppy
Insert root floppy and Press Enter.
And the system hungup there waiting for my Enter.
How can I remove this item from the booting process and panic directly
so that it can reboot? Besides,I want to keep the NFS service.
Thank you in advance.
I'm guessing that this is due to the floppy being compiled into the
emergency kernel.
In any case, can you post your .config for the emergency kernel?
Nothing in the .config looks suspicious.
It looks like it's inevitable that kernel patching will be needed, at
least, using the preprocessor to hide the floppy code.
Try this (it comments out floppy support which happens after NFS support):
comment_floppy.patch
--- init/do_mounts.c2008-04-16 22:49:44.0 -0400
+++ init/do_mounts2.c 2008-10-10 23:03:06.867876561 -0400
@@ -308,7 +308,8 @@
ROOT_DEV = Root_FD0;
}
#endif
-#ifdef CONFIG_BLK_DEV_FD
+/* #ifdef CONFIG_BLK_DEV_FD */
+#if 0
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
/* rd_doload is 2 for a dual initrd/ramload setup */
if (rd_doload==2) {
cd to your /usr/src/linux-... and run patch -p0 comment_floppy.patch
It should fix the _specific_ issue. It might not fix the root cause, however.
--
Andrey Vul
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
---
魏亮 David Wei
您可以通过下面的方式和我联系：
MSN: [EMAIL PROTECTED]
Gtalk: [EMAIL PROTECTED]
Email: [EMAIL PROTECTED]
--
Andrey Vul
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
Re: [gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
I'm gonna do that next time before I post here.
thanks Andrey.
On Sat, 11 Oct 2008 02:08:56 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
On Sat, Oct 11, 2008 at 12:00 AM, David Wei [EMAIL PROTECTED] wrote:
Thanks Andrey, that patch works , my test kernel dose not ask for the
floppy before the panic. Just by the way,dose that mean I cannot use floppy
drive on this box?
You can use the floppy drive, but the kernel cannot run init / use
initrd from a floppy (i.e. you are not allowed to use root=/dev/fd0 or
initrd=/dev/fd0). This is because the floppy is fallback code if the
NFS mount of / fails.
But this is Gentoo, you make your own kernel (hopefully), and never
have to worry about initrd.
/ and /dev/root are used interchangeably, for readabilty, similar to /
and /dev/hdaX.
All I did was comment out the floppy fallback code.
This is how mount_root was originally written:
If CONFIG_ROOT_NFS is defined
If root device is NFS
If the NFS root mounted
Return
Print message VFS: Unable to mount root fs via NFS, trying floppy.\n
Set root device as floppy disk 0
If CONFIG_BLK_DEV_FD (floppy disk) is defined
If the root device is a floppy
If dual initrd/ramload is enabled
If the first partition of the ramdisk image could be
loaded into memory
Set the root device as a ramdisk
Set the root device name as null
Else
Prompt for root floppy
If CONFIG_BLOCK is defined
Create a device named /dev/root with the major minor modes
equal to the root device
Mount /dev/root with root device mountflags
If you want more detail, you should post to lkml.
All I have done was replace the following line:
If CONFIG_BLK_DEV_FD (floppy disk) is defined
with
If false
}
Thanks again!!
No problem.
In reality, the fix was simple.
All I did was grep the source tree for the exact string (grep -R VFS:
Unable to mount root fs via NFS, trying floppy .
)
Then open up vim (or emacs or nano), find the line, and add an #if 0
... #endif block where needed.
On Fri, 10 Oct 2008 23:06:09 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
On Fri, Oct 10, 2008 at 10:33 PM, David Wei [EMAIL PROTECTED] wrote:
Sorry, I forgot that file .
the .config is in the attachment this time.
Thank you .
On Fri, 10 Oct 2008 10:05:36 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
2008/10/10 David Wei [EMAIL PROTECTED]:
Hi,
I am trying kexec with kernel panic reboot cause i have to manage
my server remotely.
the kernel panic reboot
(http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has beening working
so good so far for the regular kernel panic.However,sometimes when i
were missed some file system items,the booking process would ask me:
VFS: Unable to mount root fs via NFS,trying floppy
Insert root floppy and Press Enter.
And the system hungup there waiting for my Enter.
How can I remove this item from the booting process and panic
directly so that it can reboot? Besides,I want to keep the NFS
service.
Thank you in advance.
I'm guessing that this is due to the floppy being compiled into the
emergency kernel.
In any case, can you post your .config for the emergency kernel?
Nothing in the .config looks suspicious.
It looks like it's inevitable that kernel patching will be needed, at
least, using the preprocessor to hide the floppy code.
Try this (it comments out floppy support which happens after NFS support):
comment_floppy.patch
--- init/do_mounts.c2008-04-16 22:49:44.0 -0400
+++ init/do_mounts2.c 2008-10-10 23:03:06.867876561 -0400
@@ -308,7 +308,8 @@
ROOT_DEV = Root_FD0;
}
#endif
-#ifdef CONFIG_BLK_DEV_FD
+/* #ifdef CONFIG_BLK_DEV_FD */
+#if 0
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
/* rd_doload is 2 for a dual initrd/ramload setup */
if (rd_doload==2) {
cd to your /usr/src/linux-... and run patch -p0 comment_floppy.patch
It should fix the _specific_ issue. It might not fix the root cause,
however.
--
Andrey Vul
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
---
魏亮 David Wei
您可以通过下面的方式和我联系：
MSN: [EMAIL PROTECTED]
Gtalk: [EMAIL PROTECTED]
Email: [EMAIL PROTECTED]
--
Andrey Vul
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
---
魏亮 David Wei
您可以通过下面的方式和我联系：
MSN: [EMAIL PROTECTED]
Gtalk: [EMAIL PROTECTED]
Email: [EMAIL PROTECTED]
Re: [gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
On Fri, 10 Oct 2008 23:06:09 -0400
Andrey Vul wrote:
On Fri, Oct 10, 2008 at 10:33 PM, David Wei [EMAIL PROTECTED]
wrote:
Sorry, I forgot that file .
the .config is in the attachment this time.
Thank you .
On Fri, 10 Oct 2008 10:05:36 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
2008/10/10 David Wei [EMAIL PROTECTED]:
Hi,
I am trying kexec with kernel panic reboot cause i have to
manage my server remotely. the kernel panic
reboot (http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has
beening working so good so far for the regular kernel
panic.However,sometimes when i were missed some file system
items,the booking process would ask me: VFS: Unable to mount
root fs via NFS,trying floppy Insert root floppy and Press
Enter. And the system hungup there waiting for my Enter. How
can I remove this item from the booting process and panic
directly so that it can reboot? Besides,I want to keep the NFS
service. Thank you in advance.
I'm guessing that this is due to the floppy being compiled into the
emergency kernel.
In any case, can you post your .config for the emergency kernel?
Nothing in the .config looks suspicious.
It looks like it's inevitable that kernel patching will be needed, at
least, using the preprocessor to hide the floppy code.
Try this (it comments out floppy support which happens after NFS
support): comment_floppy.patch
--- init/do_mounts.c2008-04-16 22:49:44.0 -0400
+++ init/do_mounts2.c 2008-10-10 23:03:06.867876561 -0400
@@ -308,7 +308,8 @@
ROOT_DEV = Root_FD0;
}
#endif
-#ifdef CONFIG_BLK_DEV_FD
+/* #ifdef CONFIG_BLK_DEV_FD */
+#if 0
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
/* rd_doload is 2 for a dual initrd/ramload setup */
if (rd_doload==2) {
cd to your /usr/src/linux-... and run patch -p0 comment_floppy.patch
It should fix the _specific_ issue. It might not fix the root cause,
however.
--
Andrey Vul
Looking in do_mounts.c, the code that generates the message is:
#ifdef CONFIG_ROOT_NFS
if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR) {
if (mount_nfs_root())
return;
printk(KERN_ERR VFS: Unable to mount root fs via NFS, trying
floppy.\n);
ROOT_DEV = Root_FD0;
}
#endif
Looking at the .config file, I see CONFIG_ROOT_NFS=y. Since the
message is being printed, we know that
if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR)
is true which wmeans that the
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR)
is false, i.e. the change to #if 0 looks to be incorrect.
Perhaps CONFIG_ROOT_NFS=y in .config is the root cause. I'd suggest
changing the .config.
HTH,
David
Re: [gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
On Sat, Oct 11, 2008 at 8:01 AM, David Relson [EMAIL PROTECTED] wrote:
On Fri, 10 Oct 2008 23:06:09 -0400
Andrey Vul wrote:
On Fri, Oct 10, 2008 at 10:33 PM, David Wei [EMAIL PROTECTED]
wrote:
Sorry, I forgot that file .
the .config is in the attachment this time.
Thank you .
On Fri, 10 Oct 2008 10:05:36 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
2008/10/10 David Wei [EMAIL PROTECTED]:
Hi,
I am trying kexec with kernel panic reboot cause i have to
manage my server remotely. the kernel panic
reboot (http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has
beening working so good so far for the regular kernel
panic.However,sometimes when i were missed some file system
items,the booking process would ask me: VFS: Unable to mount
root fs via NFS,trying floppy Insert root floppy and Press
Enter. And the system hungup there waiting for my Enter. How
can I remove this item from the booting process and panic
directly so that it can reboot? Besides,I want to keep the NFS
service. Thank you in advance.
I'm guessing that this is due to the floppy being compiled into the
emergency kernel.
In any case, can you post your .config for the emergency kernel?
Nothing in the .config looks suspicious.
It looks like it's inevitable that kernel patching will be needed, at
least, using the preprocessor to hide the floppy code.
Try this (it comments out floppy support which happens after NFS
support): comment_floppy.patch
--- init/do_mounts.c2008-04-16 22:49:44.0 -0400
+++ init/do_mounts2.c 2008-10-10 23:03:06.867876561 -0400
@@ -308,7 +308,8 @@
ROOT_DEV = Root_FD0;
}
#endif
-#ifdef CONFIG_BLK_DEV_FD
+/* #ifdef CONFIG_BLK_DEV_FD */
+#if 0
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
/* rd_doload is 2 for a dual initrd/ramload setup */
if (rd_doload==2) {
cd to your /usr/src/linux-... and run patch -p0 comment_floppy.patch
It should fix the _specific_ issue. It might not fix the root cause,
however.
--
Andrey Vul
Looking in do_mounts.c, the code that generates the message is:
#ifdef CONFIG_ROOT_NFS
if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR) {
if (mount_nfs_root())
return;
printk(KERN_ERR VFS: Unable to mount root fs via NFS, trying
floppy.\n);
ROOT_DEV = Root_FD0;
}
#endif
Looking at the .config file, I see CONFIG_ROOT_NFS=y. Since the
message is being printed, we know that
if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR)
is true which wmeans that the
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR)
is false, i.e. the change to #if 0 looks to be incorrect.
Perhaps CONFIG_ROOT_NFS=y in .config is the root cause. I'd suggest
changing the .config.
He has explicity mentioned that his root device is NFS. You have
misinterpreted the code. The floppy event only occurs *if*
mount_nfs_root() failed.
It's false from the start, but becomes true when NFS mount-root failed.
--
Andrey Vul
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
Re: [gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
On Sat, 11 Oct 2008 13:23:10 -0400
Andrey Vul wrote:
On Sat, Oct 11, 2008 at 8:01 AM, David Relson
[EMAIL PROTECTED] wrote:
On Fri, 10 Oct 2008 23:06:09 -0400
Andrey Vul wrote:
On Fri, Oct 10, 2008 at 10:33 PM, David Wei
[EMAIL PROTECTED] wrote:
Sorry, I forgot that file .
the .config is in the attachment this time.
Thank you .
On Fri, 10 Oct 2008 10:05:36 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
2008/10/10 David Wei [EMAIL PROTECTED]:
Hi,
I am trying kexec with kernel panic reboot cause i have to
manage my server remotely. the kernel panic
reboot (http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has
beening working so good so far for the regular kernel
panic.However,sometimes when i were missed some file system
items,the booking process would ask me: VFS: Unable to mount
root fs via NFS,trying floppy Insert root floppy and Press
Enter. And the system hungup there waiting for my Enter. How
can I remove this item from the booting process and panic
directly so that it can reboot? Besides,I want to keep the NFS
service. Thank you in advance.
I'm guessing that this is due to the floppy being compiled into
the emergency kernel.
In any case, can you post your .config for the emergency kernel?
Nothing in the .config looks suspicious.
It looks like it's inevitable that kernel patching will be needed,
at least, using the preprocessor to hide the floppy code.
Try this (it comments out floppy support which happens after NFS
support): comment_floppy.patch
--- init/do_mounts.c2008-04-16 22:49:44.0 -0400
+++ init/do_mounts2.c 2008-10-10 23:03:06.867876561 -0400
@@ -308,7 +308,8 @@
ROOT_DEV = Root_FD0;
}
#endif
-#ifdef CONFIG_BLK_DEV_FD
+/* #ifdef CONFIG_BLK_DEV_FD */
+#if 0
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
/* rd_doload is 2 for a dual initrd/ramload setup
*/ if (rd_doload==2) {
cd to your /usr/src/linux-... and run patch -p0
comment_floppy.patch It should fix the _specific_ issue. It might
not fix the root cause, however.
--
Andrey Vul
Looking in do_mounts.c, the code that generates the message is:
#ifdef CONFIG_ROOT_NFS
if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR) {
if (mount_nfs_root())
return;
printk(KERN_ERR VFS: Unable to mount root fs via NFS, trying
floppy.\n); ROOT_DEV = Root_FD0;
}
#endif
Looking at the .config file, I see CONFIG_ROOT_NFS=y. Since the
message is being printed, we know that
if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR)
is true which wmeans that the
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR)
is false, i.e. the change to #if 0 looks to be incorrect.
Perhaps CONFIG_ROOT_NFS=y in .config is the root cause. I'd
suggest changing the .config.
He has explicity mentioned that his root device is NFS. You have
misinterpreted the code. The floppy event only occurs *if*
mount_nfs_root() failed.
It's false from the start, but becomes true when NFS mount-root
failed.
You are correct. I hadn't re-read the orginal post and didn't know the
use of NFS and I didn't look deeply enough into the code to learn that
Root_FD0 relates to FLOPPY_MAJOR.
[gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
Hi, I am trying kexec with kernel panic reboot cause i have to manage my server remotely. the kernel panic reboot (http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has beening working so good so far for the regular kernel panic.However,sometimes when i were missed some file system items,the booking process would ask me: VFS: Unable to mount root fs via NFS,trying floppy Insert root floppy and Press Enter. And the system hungup there waiting for my Enter. How can I remove this item from the booting process and panic directly so that it can reboot? Besides,I want to keep the NFS service. Thank you in advance. --- 魏亮 David Wei 您可以通过下面的方式和我联系： MSN: [EMAIL PROTECTED] Gtalk: [EMAIL PROTECTED] Email: [EMAIL PROTECTED]
Re: [gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
2008/10/10 David Wei [EMAIL PROTECTED]: Hi, I am trying kexec with kernel panic reboot cause i have to manage my server remotely. the kernel panic reboot (http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has beening working so good so far for the regular kernel panic.However,sometimes when i were missed some file system items,the booking process would ask me: VFS: Unable to mount root fs via NFS,trying floppy Insert root floppy and Press Enter. And the system hungup there waiting for my Enter. How can I remove this item from the booting process and panic directly so that it can reboot? Besides,I want to keep the NFS service. Thank you in advance. I'm guessing that this is due to the floppy being compiled into the emergency kernel. In any case, can you post your .config for the emergency kernel? -- Andrey Vul A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?
Re: [gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
Sorry, I forgot that file . the .config is in the attachment this time. Thank you . On Fri, 10 Oct 2008 10:05:36 -0400 Andrey Vul [EMAIL PROTECTED] wrote: 2008/10/10 David Wei [EMAIL PROTECTED]: Hi, I am trying kexec with kernel panic reboot cause i have to manage my server remotely. the kernel panic reboot (http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has beening working so good so far for the regular kernel panic.However,sometimes when i were missed some file system items,the booking process would ask me: VFS: Unable to mount root fs via NFS,trying floppy Insert root floppy and Press Enter. And the system hungup there waiting for my Enter. How can I remove this item from the booting process and panic directly so that it can reboot? Besides,I want to keep the NFS service. Thank you in advance. I'm guessing that this is due to the floppy being compiled into the emergency kernel. In any case, can you post your .config for the emergency kernel? -- Andrey Vul A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? --- 魏亮 David Wei 您可以通过下面的方式和我联系： MSN: [EMAIL PROTECTED] Gtalk: [EMAIL PROTECTED] Email: [EMAIL PROTECTED] .config Description: Binary data
Re: [gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
On Fri, Oct 10, 2008 at 10:33 PM, David Wei [EMAIL PROTECTED] wrote:
Sorry, I forgot that file .
the .config is in the attachment this time.
Thank you .
On Fri, 10 Oct 2008 10:05:36 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
2008/10/10 David Wei [EMAIL PROTECTED]:
Hi,
I am trying kexec with kernel panic reboot cause i have to manage my
server remotely.
the kernel panic reboot (http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot)
has beening working so good so far for the regular kernel
panic.However,sometimes when i were missed some file system items,the
booking process would ask me:
VFS: Unable to mount root fs via NFS,trying floppy
Insert root floppy and Press Enter.
And the system hungup there waiting for my Enter.
How can I remove this item from the booting process and panic directly so
that it can reboot? Besides,I want to keep the NFS service.
Thank you in advance.
I'm guessing that this is due to the floppy being compiled into the
emergency kernel.
In any case, can you post your .config for the emergency kernel?
Nothing in the .config looks suspicious.
It looks like it's inevitable that kernel patching will be needed, at
least, using the preprocessor to hide the floppy code.
Try this (it comments out floppy support which happens after NFS support):
comment_floppy.patch
--- init/do_mounts.c2008-04-16 22:49:44.0 -0400
+++ init/do_mounts2.c 2008-10-10 23:03:06.867876561 -0400
@@ -308,7 +308,8 @@
ROOT_DEV = Root_FD0;
}
#endif
-#ifdef CONFIG_BLK_DEV_FD
+/* #ifdef CONFIG_BLK_DEV_FD */
+#if 0
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
/* rd_doload is 2 for a dual initrd/ramload setup */
if (rd_doload==2) {
cd to your /usr/src/linux-... and run patch -p0 comment_floppy.patch
It should fix the _specific_ issue. It might not fix the root cause, however.
--
Andrey Vul
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
Re: [gentoo-user] Howto erase the Insert root floppy and press enter item before the kernel panic?
Thanks Andrey, that patch works , my test kernel dose not ask for the floppy
before the panic. Just by the way,dose that mean I cannot use floppy drive on
this box?
Thanks again!!
On Fri, 10 Oct 2008 23:06:09 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
On Fri, Oct 10, 2008 at 10:33 PM, David Wei [EMAIL PROTECTED] wrote:
Sorry, I forgot that file .
the .config is in the attachment this time.
Thank you .
On Fri, 10 Oct 2008 10:05:36 -0400
Andrey Vul [EMAIL PROTECTED] wrote:
2008/10/10 David Wei [EMAIL PROTECTED]:
Hi,
I am trying kexec with kernel panic reboot cause i have to manage my
server remotely.
the kernel panic reboot
(http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has beening working so
good so far for the regular kernel panic.However,sometimes when i were
missed some file system items,the booking process would ask me:
VFS: Unable to mount root fs via NFS,trying floppy
Insert root floppy and Press Enter.
And the system hungup there waiting for my Enter.
How can I remove this item from the booting process and panic directly
so that it can reboot? Besides,I want to keep the NFS service.
Thank you in advance.
I'm guessing that this is due to the floppy being compiled into the
emergency kernel.
In any case, can you post your .config for the emergency kernel?
Nothing in the .config looks suspicious.
It looks like it's inevitable that kernel patching will be needed, at
least, using the preprocessor to hide the floppy code.
Try this (it comments out floppy support which happens after NFS support):
comment_floppy.patch
--- init/do_mounts.c2008-04-16 22:49:44.0 -0400
+++ init/do_mounts2.c 2008-10-10 23:03:06.867876561 -0400
@@ -308,7 +308,8 @@
ROOT_DEV = Root_FD0;
}
#endif
-#ifdef CONFIG_BLK_DEV_FD
+/* #ifdef CONFIG_BLK_DEV_FD */
+#if 0
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
/* rd_doload is 2 for a dual initrd/ramload setup */
if (rd_doload==2) {
cd to your /usr/src/linux-... and run patch -p0 comment_floppy.patch
It should fix the _specific_ issue. It might not fix the root cause, however.
--
Andrey Vul
A: Because it messes up the order in which people normally read text.
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---
魏亮 David Wei
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