[RE]Initrd boot phase errors reading bogus partition on ATA raid drive

I had a similar problem some months ago.  It was caused by the redhat nash program's mount command in the initrd probing drives when it shouldn't (like when you mount the /proc filesystem).  I wrote a patch to the nash source code to fix it on my system. 

# diff -Naur block.c.orig block.c
--- block.c.orig        2006-03-08 11:46:59.000000000 -0800
+++ block.c     2006-03-30 02:49:19.000000000 -0800
@@ -337,6 +337,23 @@
     return NULL;
 }

+static char *
+block_populate_cache()
+{
+    bdev_iter biter;
+    bdev dev = NULL;
+    blkid_dev bdev = NULL;
+
+    biter = block_sysfs_iterate_begin("/sys/block");
+    while(block_sysfs_next(biter, &dev) >= 0) {
+
+        bdev = blkid_get_dev(cache, dev->dev_path, BLKID_DEV_FIND);
+    }
+    block_sysfs_iterate_end(&biter);
+
+    return NULL;
+}
+
 char *
 block_find_fs_by_label(const char *label)
 {
@@ -356,7 +373,7 @@

     if (!access("/sys/block", F_OK)) {
         /* populate the whole cache */
-        block_find_fs_by_keyvalue("unlikely","unlikely");
+        block_populate_cache();

         /* now look our device up */
         bdev = blkid_get_dev(cache, name, BLKID_DEV_NORMAL);


---------[ Received Mail Content ]----------
>Subject : Initrd boot phase errors reading bogus partition on ATA raid drive
>Date : Thu, 26 Oct 2006 15:19:01 -0700
>From : "charlweed"

>To :
>
>Hi gurus!
>
>Booting my Fedora 5 (2.6.18-1.2200.fc5) system takes an extra couple of
>minutes because of disk errors. The system is trying to "do something" with
>a partition on a drive that is part of a raid set, and failing. These errors
>occur during the initrd boot phase. After the system boot, the system is
>apparently ok.
>
>When I boot Linux, I get several screens worth of the following error
>
> Buffer I/O error on device hde1, logical block 625153152
>
>
>
>hde is part of a 2 disk striped raid set. I can stop the errors if I add
>"hde=noprobe hdf=noprobe" as a kernel boot parameter, but then I cannot use
>dmraid to access my raid partition, because /dev/hde & /dev/hde don't exist.
>I tried adding boot parameter "hde=19457,255,63" but the device remains
>invisible.
>
>
>
>My naive guess is that I can solve my problem by either
>
>1) Getting dmraid to see my drives after a boot that uses "noprobe"
>
>2) Stopping whatever program is trying to access hde1 during the initrd
>boot.
>
>All my attempts at 1) have failed, and I have no idea how to do 2).
>
>
>
>My System has
>
> An Abit AN7 nforce chipset motherboard with
>
> 2 ATA onboard channels
>
> onboard Si3112 SATA Raid ( I use SATA, but not the SATA raid)
>
> A SiI0680 (CMD 680) pci ATA card
>
>
>
>The drive layout is
>
> hda onboard ata [hda1=/boot ,ext3 : hda2=unmounted, ntfs]
>
> hdc onboard ata [ hdc1= /, ext3 : hdc2=swap : hdc3=/var, ext3]
>
>** hde SiI0680 striped raid set 1
>
> hdf SiI0680 [ hdf1=unmounted, ntfs ]
>
>** hdg SiI0680 striped raid set 1
>
> sda onboard SATA [sda1=unmounted, ntfs]
>
>** dm-0 raid 1[dm-0p1=unmounted, ntfs]
>
>Thanks!
>
>Charlweed
>
>
>
>
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