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

Steven Cole
2005-02-23T22:17:13Z

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. 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

Reading another post (and looking in /dev), I tried hdq:

[root@spc1 steven]# mount -t reiser4 /dev/hdq1 /reiser4_testing
[root@spc1 steven]# df -T
Filesystem Type Size Used Avail Use% Mounted on
/dev/hda1 ext3 304M 75M 214M 26% /
/dev/hda9 reiserfs 8.3G 3.9G 4.4G 48% /home
/dev/hda8 ext3 464M 8.1M 432M 2% /tmp
/dev/hda6 ext3 7.4G 1.7G 5.4G 24% /usr
/dev/hda7 ext3 1.9G 86M 1.7G 5% /var
/dev/hdq1 reiser4 18G 217M 18G 2% /reiser4_testing

Snipped from dmesg:

hda: ST320423A, ATA DISK drive
hdb: WDC WD200BB-75AUA1, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: SONY CD-RW CRX160E, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide4...
Probing IDE interface ide5...
hda: max request size: 128KiB
hda: 40011300 sectors (20485 MB) w/512KiB Cache, CHS=39693/16/63, UDMA(66)
hda: cache flushes not supported
/dev/ide/host0/bus0/target0/lun0: p1 p2 < p5 p6 p7 p8 p9 >
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

Steven