** Description changed:
I have installed Intrepid server i386 beta on a Dell PowerEdge 600SC.
Everything seemed to install fine but upon boot it always drops into the
BusyBox shell. The RAID is *not* degraded. At the BusyBox prompt if I
type 'exit' it will proceed to boot normally and both RAID1 drives show
healthy with all members. I have tried the install twice.
- The disk layout is:
- /dev/md0 / (root)
- /dev/md1 <swap>
- The box has dual 36GB SCSI drives on an Adaptec 39160 with BIOS version
- 2.57.2S2. Total 3GB of RAM.
+ This has shown to be a timeout issue with slow hardware.
- The console messages just before dropping into BusyBox are like this
(transcribed):
- MP-BIOS bug: 8254 timer not connected to IO-APIC
- Loading, please wait...
- uvesafb: failed to execute /sbin/v86d
- uvesafb: make sure that the v86d helper is installed and executable
- uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2)
- <pause for several seconds>
- Gave up waiting for root device. Common problems:
- <snip>
- ALERT! /dev/md0 does not exist. Dropping to a shell!
+ * initramfs: Default rootdelay may need to be larger and event driven
+ upstart used.
- Some info, after booting:
- # fdisk -l /dev/sd?
+ * linux: The long delay may have its cause here.
- Disk /dev/sda: 36.4 GB, 36420075008 bytes
- 255 heads, 63 sectors/track, 4427 cylinders
- Units = cylinders of 16065 * 512 = 8225280 bytes
- Disk identifier: 0x00000080
+ * mdadm: As RAIDs may take minutes until they come up, but regular ones are
quick, this should be handled nicely:
+ * This functionality is similar to and could most easily be added with
upstart events (the temporary tool) mountall:
- Device Boot Start End Blocks Id System
- /dev/sda1 * 1 4182 33591883+ fd Linux raid autodetect
- /dev/sda2 4183 4427 1967962+ fd Linux raid autodetect
+ "NOTICE: /dev/mdX required for the root filesystem didn't get up
+ within the last 10 seconds.
- Disk /dev/sdb: 36.7 GB, 36748945408 bytes
- 255 heads, 63 sectors/track, 4467 cylinders
- Units = cylinders of 16065 * 512 = 8225280 bytes
- Disk identifier: 0x000d6c1e
+ We continue to wait up to a total of xxx seconds complying to the ATA
spec
+ before attempting to start the array degraded.
+ (You can lower this timeout by setting the rootdelay= parameter.)
- Device Boot Start End Blocks Id System
- /dev/sdb1 * 1 4182 33591883+ fd Linux raid autodetect
- /dev/sdb2 4183 4425 1951897+ fd Linux raid autodetect
+ <countdown> seconds to go.
- # mount | grep md
- /dev/md0 on / type ext3 (rw,noatime,relatime,errors=remount-ro)
+ Press [ESC] to stop waiting and to enter a rescue shell.
- # cat /proc/mdstat
- Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4]
[raid10]
- md1 : active raid1 sda2[0] sdb2[1]
- 1951808 blocks [2/2] [UU]
- md0 : active raid1 sda1[0] sdb1[1]
- 33591808 blocks [2/2] [UU]
-
- unused devices: <none>
-
- # mdadm --detail /dev/md0
- /dev/md0:
- Version : 00.90
- Creation Time : Fri Oct 3 17:07:47 2008
- Raid Level : raid1
- Array Size : 33591808 (32.04 GiB 34.40 GB)
- Used Dev Size : 33591808 (32.04 GiB 34.40 GB)
- Raid Devices : 2
- Total Devices : 2
- Preferred Minor : 0
- Persistence : Superblock is persistent
-
- Update Time : Sat Oct 4 10:52:42 2008
- State : clean
- Active Devices : 2
- Working Devices : 2
- Failed Devices : 0
- Spare Devices : 0
-
- UUID : 40576586:21a3ec73:fce4d375:9253158f
- Events : 0.6
-
- Number Major Minor RaidDevice State
- 0 8 1 0 active sync /dev/sda1
- 1 8 17 1 active sync /dev/sdb1
-
- # mdadm --detail /dev/md1
- /dev/md1:
- Version : 00.90
- Creation Time : Fri Oct 3 17:07:55 2008
- Raid Level : raid1
- Array Size : 1951808 (1906.38 MiB 1998.65 MB)
- Used Dev Size : 1951808 (1906.38 MiB 1998.65 MB)
- Raid Devices : 2
- Total Devices : 2
- Preferred Minor : 1
- Persistence : Superblock is persistent
-
- Update Time : Fri Oct 3 18:44:10 2008
- State : clean
- Active Devices : 2
- Working Devices : 2
- Failed Devices : 0
- Spare Devices : 0
-
- UUID : 7653b33c:78f7bd9a:8be10872:a9def14a
- Events : 0.6
-
- Number Major Minor RaidDevice State
- 0 8 2 0 active sync /dev/sda2
- 1 8 18 1 active sync /dev/sdb2
+ * see https://wiki.ubuntu.com/ReliableRaid
** Also affects: mountall (Ubuntu)
Importance: Undecided
Status: New
--
disk detection is real slow with some hardware (timout shell drops)
https://bugs.launchpad.net/bugs/278176
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