Re: 2.6.11-rc4-mm1 (VFS: Cannot open root device "301")

Andrew Morton
2005-02-23T23:03:01Z

Steven Cole <elenstev@mesatop.com> wrote:
>
> Andrew Morton wrote:
> > Steven Cole <elenstev@mesatop.com> wrote:
>
> >> I am having trouble getting recent -mm kernels to boot on my test box.
> >> For 2.6.11-rc3-mm2 and 2.6.11-rc4-mm1 I get the following:
> >>
> >> VFS: Cannot open root device "301" or unknown-block(3,1)
> >> Please append a correct "root=" boot option
> >> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(3,1)
> >>
> [snipped]
> >
> > Please set CONFIG_BASE_FULL=y. Check that this causes CONFIG_BASE_SMALL=0,
> > then retest.
>
> Yes, that worked.

hmm, OK. Matt, we have a block major enumeration problem. It appears that
base-small-shrink-chrdevs-hash.patch has the same problem which
base-small-shrink-major_names-hash.patch had.

> 2.6.11-rc4-mm1 now boots OK, but hdb1 seems to be missing.
>
> [root@spc1 steven]# uname -r
> 2.6.11-rc4-mm1-GX110
> [root@spc1 steven]# mount -t reiser4 /dev/hdb1 /reiser4_testing
> mount: special device /dev/hdb1 does not exist

It would seem that your /dev/hdb1 block-special device node isn't present.
Try `mknod /dev/hdb1 3 65'.

> hdb: max request size: 128KiB
> hdb: 39102336 sectors (20020 MB) w/2048KiB Cache, CHS=38792/16/63, UDMA(66)
> hdb: cache flushes not supported
> /dev/ide/host0/bus0/target1/lun0: p1

We found a partition.