Re: [Security-Discuss] [ MDKSA-2006:086 ] - Don't update the kernel on Soft-RAID-Sytems

On Sat, 20 May 2006, Luca Berra wrote:

> On Fri, May 19, 2006 at 01:18:18PM -0300, Luiz Fernando N. Capitulino wrote:
>> On Fri, 19 May 2006 13:00:28 +0200 (CEST)
>> Juergen Holm <holm-cReBFXHS9TI9HBOmPq+WUkOITlckZahNbaYZWgcc/[email protected]> wrote:
>> 
>> |  If you have system with software raid 1 only , don't upgrade to the
>> |  new kernel.
>> |  The system will not reboot because of problem with initrd (I think)
>
> could you please be more specific in describing your problem, so that we
> might actually understand it.


Sorry.

My Config:
   Data:etc>df
   Filesystem           1K-blocks      Used Available Use% Mounted on
   /dev/md1               2015440    174268   1738792  10% /
   /dev/md0               2015440     45504   1867556   3% /boot
   /dev/md2               2015440     56656   1856404   3% /tmp
   /dev/md4               2015440    328780   1584280  18% /usr
   /dev/md3               2015440    141540   1771520   8% /var

   Data:/tmp>cat /etc/mdadm.conf
   DEVICE /dev/hda7 /dev/hdc6 /dev/hda5 /dev/hdc5 /dev/hda9 /dev/hdc8
   /dev/hda8 /dev/hdc7 /dev/hda1 /dev/hdc1
   DEVICE /dev/hda10 /dev/hdc9
   ARRAY /dev/md1 devices=/dev/hda5,/dev/hdc5 spare-group=global
   ARRAY /dev/md2 devices=/dev/hda7,/dev/hdc6 spare-group=global
   ARRAY /dev/md4 devices=/dev/hda9,/dev/hdc8 spare-group=global
   ARRAY /dev/md3 devices=/dev/hda8,/dev/hdc7 spare-group=global
   ARRAY /dev/md0 level=raid1
   devices=/dev/hda1,/dev/hdc1,/dev/hda10,/dev/hdc9 spares=2
   spare-group=global
   MAILADDR root-cReBFXHS9TI9HBOmPq+WUkOITlckZahNbaYZWgcc/[email protected]

The init file in initrd-2.6.12-21mdksmp.img:
   #!/bin/nash

   echo "Loading raid1.ko module"
   insmod /lib/raid1.ko
   echo "Loading jbd.ko module"
   insmod /lib/jbd.ko
   echo "Loading ext3.ko module"
   insmod /lib/ext3.ko
   echo Mounting /proc filesystem
   mount -t proc /proc /proc
   echo Mounting sysfs
   mount -t sysfs none /sys
   echo Creating device files
   mountdev size=32M,mode=0755
   echo -n /sbin/hotplug > /proc/sys/kernel/hotplug
   mkdir /dev/.udevdb
   mkdevices /dev
   echo Activating md devices
   mknod /dev/md1 b 9 1
   mknod /dev/md/1 b 9 1
   mdassemble
   echo Creating root device
   mkrootdev /dev/root
   resume
   echo Mounting root filesystem /dev/root
   mount -o defaults --ro -t ext3 /dev/root /sysroot
   echo Switching to new root
   switchroot --movedev /sysroot
   echo Initrd finished

The linuxrc file in initrd-2.6.12-18mdksmp.img:
(Comment: there are no SATA drives installed!)
   #!/bin/nash

   echo "Loading raid1.ko module"
   insmod /lib/raid1.ko
   echo "Loading scsi_mod.ko module"
   insmod /lib/scsi_mod.ko
   echo "Loading libata.ko module"
   insmod /lib/libata.ko
   echo "Loading sata_sil.ko module"
   insmod /lib/sata_sil.ko
   echo "Loading sd_mod.ko module"
   insmod /lib/sd_mod.ko
   echo "Loading jbd.ko module"
   insmod /lib/jbd.ko
   echo "Loading ext3.ko module"
   insmod /lib/ext3.ko
   echo Mounting /proc filesystem
   mount -t proc /proc /proc
   echo Mounting sysfs
   mount -t sysfs none /sys
   echo Creating device files
   mountdev size=32M,mode=0755
   echo -n /sbin/hotplug > /proc/sys/kernel/hotplug
   mkdir /dev/.udevdb
   mkdevices /dev
   echo Activating md devices
   mknod /dev/md1 b 9 1
   mknod /dev/md/1 b 9 1
   mdassemble
   echo Creating root device
   mkrootdev /dev/root
   echo Mounting root filesystem /dev/root
   mount -o defaults --ro -t ext3 /dev/root /sysroot
   echo 0x0100 > /proc/sys/kernel/real-root-dev
   pivot_root /sysroot /sysroot/initrd
   umount /initrd/sys
   umount /initrd/proc
   echo Initrd finished

The etc/mdadm.conf on both initrd's  are identical:
   DEVICE partitions
   ARRAY /dev/md1 level=raid1 num-devices=2
   UUID=4973a5d8:166afadc:7b19d182:742a1f1c


This is my Bootlog (screenshots + ocr, is there an easier way?):

PCI  Probing PCI hardware
PCI  Probing PCI hardware (bus 00)
PCI  Ignoring BAR0-3 of IDE controller 0000:00 1f.1
PCI  Transparent bridge - 0000:00:1e.0
PCI  Using IRQ router PIIX/ICH [8086/25a1] at 0000:00 1f.0
PCI >APIC IRQ transform: 0000:00:1d.0[A] -> IRQ 16
PCI >APIC IRQ transform: 0000:00:1d.1[B] -> IRQ 19
PCI >APIC IRQ transform: 0000:00:1d.7[D] -> IRQ 23
PCI >APIC IRQ transform: 0000:00:1f.1[A] -> IRQ 16
PCI >APIC IRQ transform: 0000:00:1f.3[B] -> IRQ 17
PCI >APIC IRQ transform: 0000:O1:01.0[A] -> IRQ 18
PCI >APIC IRQ transform: 0000:03:01.0[A] -> IRQ 21
PCI >APIC IRQ transform: 0000:03:02.0[A] -> IRQ 17
PCI >APIC IRQ transform: 0000:03:03.0[A] -> IRQ 20
apm  BIOS version 1.2 Flags 0x07 (Driver version 1.16ac)
apm  disabled - APM Is not SMP safe.
audit  Initializing netlink socket (disabled)
audit(1148121533.368:0)  Initialized
highmem bounce pool size  64 pages
UFS  Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
devfs  2004-01-31 Richard Gooch ([email protected])
devfs  boot_options: 0x0
Initializing Cryptographic API
isapnp: Scanning for PnP cards
isapnp: No Plug & Play device found
Real Time Clock Driver v1.12
PNP: No PS/2 controller found  Probing ports directly
serio: i8042 AUX port at 0x60,Ox64 irq 12
serio: i8042 KBD port at 0x60,Ox64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports  IRQ sharing enabled
ttyS1 at I/O Ox3f8 (irq = 4) is a 16550A
ttyS2 at I/O Ox3e8 (irq = 4) is a 16550A
ttyS3 at I/O Ox2e8 (irq = 3) is a 16550A
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized  16 RAM disks of 32000K size 1024 blocksize
pktcdvd  v0.2.0a 2004-07-14 Jens Axboe (axboe@suse de) and [email protected]
Uniform Multi-Platform E-IDE driver Revision: 8.00alpha2
ide: Assumlng 33MHz system bus speed for PIO modes  override with idebus=xx
ICH5: IDE controller at PCI slot 0000:00:1f.1
ICH5: chipset revision 2
ICH5: not 100% native mode  will probe irqs later
     ide0: BM-DMA at Oxf000-0xf007, BIOS settings: hda:DMA, hdb:pio
     ide1: BM-DMA at Oxf008-0xf00f, BIOS settings: hdc:DMA, hdd:pio
hda  Maxtor 6Y080L0, ATA DISK drive
ide0 at 0x1f0-Ox1f7 Ox3f6 on irq 14
hdc: Maxtor 6Y080L0, ATA DISK drive
ide1 at 0x170-0x177 Ox376 on irq 15
hda: max request size  128KiB
hda: 160086528 sectors (81964 MB) w/2048KIB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
/dev/ide/host0/bus0/target0/lun0: pl p2 < p5 p6 pl p8 p9 p1O >
hdc: max request size  128KiB
hdc: 160086528 sectors (81964 MB) w/2048KIB Cache, CHS=65535/16/63, UDMA(100)
hdc: cache flushes supported
/dev/lde/hostO/busl/targetO/lunO  pl p2 < p5 p6 pl p8 p9 >
mice: PS/2 mouse device common for all mlce
md: md driver 0.90.1 MAX_MD_DEVS=256  MD_SB_DISKS=27
NET: Registered protocol family 2
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP established hash table entrtes  262144 (order: 9, 209ll52 bytes)
TCP bind hash table entries  65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 262144 bind 65536)
NET: Registered protocol family 1
Starting balanced_irq
Using IPI No-Shortcut mode
swsusp: Suspend partition has wrong signature?
BIOS EDD facillty v0.16 2004-Jun-25, 2 devices found
Freeing unused kernel memory: 288k freed
Red Hat nash version 4.2.17mdk starting
Loadlng raid1.ko module
md: raid1 personality registered as nr 3
Loading jbd.ko module
Loading ext3.ko module
Mounting /proc fllesystem
Mounting sysfs
Creatlng device flles
Mounting tmpfs on /dev
Activating md devices
devfs_mk_dev: could not append to parent for md/1
md: md1 stopped
input: AT Translated Set 2 keyboard on isa0060/serio0
md  bind<hdc5>
md  bind<hda5>
raid1: raid set md1 active with 2 out of 2 mirrors
mdadm: /dev/md1 has been started with 2 drives.
Creating root device
Trying to resume from /dev/hda6
No suspend signature on swap, not resuming
Mounting root filesystem /dev/root
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted fllesystem with ordered data mode.
Switching to new root
unmounting old /proc
unmounting old /sys
input: ImPS/2 Generic Wheel Mouse on isa0060/serio1
INIT: version 2.86 bootlng
Setting default font (lat0-sunl6)                     [  OK  ]
Mountlng proc fllesystem                              [  OK  ]
Mountlng sysfs on /sys                                [  OK  ]
usbcore: registered new driver usbfs
usbcore: reglstered new driver hub
USB Universal Host Controller Interface driver v2.2
uhci_hcd 0000:00:1d.0  UHCI Host Controller
uhci_hcd 0000:00:1d.0  new USB bus registered  assigned bus number 1
uhci_hcd 0000:00:1d.0  irq 16, io base 0x0000d400
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
uhci_hcd 0000:00:1d.1  UHCI Host Controller
uhci_hcd 0000:00:1d.1  new USB bus registered  assigned bus number 2
uhci_hcd 0000:00:1d.1  irq 19, io base 0x0000d000
hub 2-0:1.0  USB hub found
hub 2-0:1.0  2 ports detected
ehci_hcd 0000:00:1d.7  EHCI Host Controller
ehci_hcd 0000:00:1d.7  new USB bus registered  assigned bus number 3
ehci_hcd 0000:00:1d.7  irq 23, io mem Oxf5000000
ehci_hcd 0000:00:1d.7  USB 2.0 initialized  EHCI 1.00, driver 10 Dec 2004
hub 3-0:1.0: USB hub found
hub 3-O:1.0: 4 ports detected
ts: Compaq touchscreen protocol output
Start udev                                              [  OK  ]
                      Welcome to Mandriva Linux 2006.0
             Press 'I' to enter interactive startup.
Configuring kernel parameters                           [  OK  ]
Setting clock  (utc): Sat May 20 12:38:51 CEST 2006     [  OK  ]
Setting hostname Data:                                  [  OK  ]
Checking root fllesystem
/dev/md1: clean  28222/256000 files  51612/511904 blocks
                                                         [  OK  ]
Remounting root filesystem in read write mode:          [  OK  ]
Activating swap partitions:                             [  OK  ]
Starting up RAID devices: mdadm: error opening /dev/md2: No such file or directoty
mdadm: error opening /dev/md4: No such file or directory
mdadm: error openlng /dev/md3: No such file or directory
mdadm: error openlng /dev/md0: No such file or directory

*** An error occurred during the RAID startup
*** If It Is critical the boot process will stop
*** when trying to mount fllesystems. Else check
*** /etc/mdadm conf for obsolete ARRAY entries
Checking filesystems
fsck.ext3: No such flle or directory /dev/md0:
The superblock could not be read or does not describe a correct ext2
fllesystem.  If the device is valid and it really contains an ext2
fllesystem (and not swap or ufs or something else)  then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>

/dev/md2
The superblock could not be read or does not describe a correct ext2
fllesystem.  If the device is valid and it really contains an ext2
fllesystem (and not swap or ufs or something else)  then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>


while trying to open /dev/md0
fsck.ext3: No such file or directory while trying to open /dev/md2
fsck.ext3: No such file or directory while trying to open /dev/md4
/dev/md4



18mdk boots fine! 
I absolutly don't know what's going on!


mfg,jh

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