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On Saturday 27 November 2010 15:17:43 Mark Knecht wrote: |
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> On Sat, Nov 27, 2010 at 6:59 AM, Mick <michaelkintzios@×××××.com> wrote: |
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> > I haven't had much luck with the 2.6.35 version of kernels - they have |
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> > cause panics on two different x86 boxen. |
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> > |
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> > Now that 2.6.35 has gone stable so I tried it again and I'm getting a |
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> > kernel panic complaining about VFS unable to mount root fs: |
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> > ================================== |
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> > VFS: Cannot open root device "sda3" or unknown-block(0,0) |
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> > Please append a correct "root=" boot option; here are the available |
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> > partitions: Kernel panic - not syncing: VFS: Unable to mount root fs on |
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> > unknown-block(0,0) Pid: 1, comm: swapper Not tainted 2.6.35-gentoo-r12 |
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> > #2 |
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> > Call Trace: |
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> > [<c14b3530>] ? panic+0x5f/0xc6 |
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> > [<c1693c68>] ? mount_block_root+0x1c2/0x245 |
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> > [<c1002930>] ? do_signal+0x766/0x7f2 |
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> > [<c1693d31>] ? mount_root+0x46/0x5a |
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> > [<c1693e8b>] ? prepare_namespace+0x146/0x182 |
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> > [<c1093203>] ? sys_access+0x1f/0x23 |
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> > [<c16933f1>] ? kernel_init+0x1a9/0x1b7 |
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> > [<c1693248>] ? kernel_init+0x0/0x1b7 |
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> > [<c10030b6>] ? kernel_thread_helper+0x6/0x10 |
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> > panic occurred, switching back to text console |
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> > ================================== |
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> |
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> <SNIP> |
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> |
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> > Am I missing something obvious to make the 2.6.35 series work with my |
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> > boxen? |
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> OK, there's so many possibilities for what causes this. Basic |
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> confusion ensues... |
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> |
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> 1) When booting, if you look carefully, is the initial kernel seeing |
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> _any_ disks? Sometimes they fly bye and are hard to catch. If it is |
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> then is it showing sda3? |
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The moment the monitor comes on it's already crashed - the first line under |
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the penguins shows: |
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Initializing USB Mass Storage driver... |
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so I assume that any probing of drives has already happened. |
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> 2) What sort of file system did you put on sda3? I assume this is |
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> built into the kernel if this is an upgrade? |
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reiserfs built into the kernel and unchanged for the last umpteen kernel |
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series. |
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> 3) Post the appropriate part of grub.conf to show how you are booting. |
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title=Gentoo Linux 2.6.35-r12 |
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root (hd0,5) |
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kernel /kernel-2.6.35-gentoo-r12 root=/dev/sda3 |
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The 2.6.34-r12 uses the same stanza except for *.35 being replaced with *.34 |
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> 4) Post fstab |
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/dev/sda6 /boot ext2 noauto,noatime 1 1 |
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/dev/sda3 / reiserfs noatime 0 1 |
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/dev/sda2 none swap sw 0 0 |
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[snip] |
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I'll now build the kernel on the second x86 box and see what happens there. |
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-- |
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Regards, |
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Mick |
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