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** Description changed:
- I found this bug after doing a fresh install of Ubuntu 10.04 LTS server
- (amd64) on a Dell PowerEdge R410, with hardware RAID (SCSI storage
- controller SAS1068E PCI-Express Fusion-MPT SAS (LSI Logic / Symbios
- Logic)). Before installing Ubuntu 10.04, this server was booting without
- a problem with CentOS 5.4 (Linux 2.6.18)
-
- When the installation is over and after the first reboot, I get this error
message
- "Gave up waiting for root device.
+ I found this bug after doing a fresh install of Ubuntu 10.04 LTS server
(amd64) on a Dell PowerEdge R410, with hardware RAID (SCSI storage controller
SAS1068E PCI-Express Fusion-MPT SAS (LSI Logic / Symbios Logic)). Before
installing Ubuntu 10.04, this server was booting without a problem with CentOS
5.4 (Linux 2.6.18). When the installation is over and after the first reboot, I
get this error message:
+ Gave up waiting for root device.
...
ALERT! /dev/disk/by-uuid/[mydiskUUID here] does not exit. Dropping to a shell!
+ Busybox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu11) built-in shell (ash)
+ (initramfs)
- Busybox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu11) built-in shell (ash)
-
- (initramfs)
- "
-
- If I wait between 10 and 20 seconds, I see
- "
+ If I wait between 10 and 20 seconds, I see:
35.538649] sd 4:1:0:0: [sda] 584843264 512-byte logical blocks: (299 GB/278
GiB)
[ 35.539484] sd 4:1:0:0: [sda] Write Protect is off
[ 35.539555] sd 4:1:0:0: [sda] Mode Sense: 03 00 00 08
[ 35.540034] sd 4:1:0:0: [sda] Write cache: disabled, read cache: enabled,
doesn't support DPO or FUA
[ 35.541687] sda: sda1 sda2 sda3 sda4 < sda5 >
[ 35.560048] sd 4:1:0:0: [sda] Attached SCSI disk
[ 36.521418] Adding 2096472k swap on /dev/sda3. Priority:-1 extents:1
across:2096472k
[ 36.761904] EXT3 FS on sda2, internal journal
[ 37.181651] EXT3 FS on sda1, internal journal
"
Then, I type exit and the boot resumes normally. I could reproduce this
bug after every reboot.
- I solved this issue by adding
-
+ WORKAROUND: I solved this issue by adding to /etc/default/grub :
GRUB_CMDLINE_LINUX_DEFAULT="rootdelay=50"
-
- to
-
- /etc/default/grub
and running update-grub
- The kernel is Linux 2.6.32-22-server #33-Ubuntu SMP Wed Apr 28 14:34:48
- UTC 2010 x86_64 GNU/Linux
-
- I attach outputs of lshw, dmidecode, lscpi -vvv and lsmod
-
Unlike Bug #576302 , I can solve the problem with rootdelay=50 and I
- don't use mptspi kernel module, so I think it is another bug (but may be
- they are related).
+ don't use mptspi kernel module.
** Tags removed: server
** Tags added: needs-kernel-logs needs-upstream-testing
** Changed in: linux (Ubuntu)
Importance: Undecided => Low
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/579572
Title:
Lucid: Gave up waiting for root device (mptsas) resolved by rootdelay
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