# Waiting for device to appear...

**URL:** <https://forums.suse.com/t/waiting-for-device-to-appear/27951>\
**Category:** SLES Install-Boot\
**Created:** [March 3, 2016, 4:23pm UTC](https://forums.suse.com/t/waiting-for-device-to-appear/27951 "2016-03-03T16:23:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![System1](https://avatars.discourse-cdn.com/v4/letter/s/51bf81/32.png) [@System1](https://forums.suse.com/u/System1)\
**Post date:** [March 3, 2016, 4:23pm UTC](https://forums.suse.com/t/waiting-for-device-to-appear/27951/1 "2016-03-03T16:23:43Z")

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Hi,

I have the following problem with SLES 11 SP4 on an IBM System x3650 M4  
(ServeRAID M5110e 3.24):

Booting stops while trying to mount the root device, exits to shell, then if  
I simply exit the shell the device mounts successfully and the boot process  
continues successfully:

Setup multipath devices: ok.  
Trying manual resume from /dev/disk/by-  
id/scsi-360050760580b24401a2b5baa1b01de9a-part1  
Invoking userspace resume from /dev/disk/by-  
id/scsi-360050760580b24401a2b5baa1b01de9a-part1  
resume: libgcrypt version: 1.5.0  
Trying manual resume from /dev/disk/by-  
id/scsi-360050760580b24401a2b5baa1b01de9a-part1  
Invoking in-kernel resume from /dev/disk/by-  
id/scsi-360050760580b24401a2b5baa1b01de9a-part1

Waiting for device /dev/disk/by-id/scsi-360050760580b24401a2b5baa1b01de9a-  
part2 to appear: !!!Could not find /dev/disk/by-  
id/scsi-360050760580b24401a2b5baa1b01de9a-part2.  
Want me to fall back to /dev/disk/by-  
id/scsi-360050760580b24401a2b5baa1b01de9a-part2? (Y/n)  
Waiting for device /dev/disk/by-id/scsi-360050760580b24401a2b5baa1b01de9a-  
part2 to appear: !!!not found – exiting to  
/bin/sh  
$ exit  
exit  
fsck from util-linux 2.19.1  
[/sbin/fsck.ext3 (1) – /] fsck.ext3 -a -C0 /dev/sda2  
/dev/sda2: clean, 273962/14024704 files, 6619141/56097024 blocks  
fsck succeeded. Mounting root device read-write.  
Mounting root /dev/disk/by-id/scsi-360050760580b24401a2b5baa1b01de9a-part2  
mount -o rw,acl,user\_xattr -t ext3 /dev/disk/by-  
id/scsi-360050760580b24401a2b5baa1b01de9a-part2 /root

Any idea what’s the cause of the problem?

Thanks,  
Mirko

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<div class="post-metadata">

**Author:** ![Jens-U](https://avatars.discourse-cdn.com/v4/letter/j/d78d45/32.png) [@Jens-U](https://forums.suse.com/u/Jens-U)\
**Post date:** [March 8, 2016, 4:18pm UTC](https://forums.suse.com/t/waiting-for-device-to-appear/27951/2 "2016-03-08T16:18:09Z")

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Hi Mirko,

sounds like some timing issue. You might want to start in debug mode (i.e. by adding kernel parameter “linuxrc=trace”), so that you get more output from the setup scripts.

Regards,  
Jens

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**Author:** ![system](https://us1.discourse-cdn.com/flex022/uploads/suse/original/2X/5/5012ba89e3ffb5220dac47d5ea0ba032e2fe1cb6.png) [@system](https://forums.suse.com/u/system)\
**Post date:** [March 9, 2016, 6:06pm UTC](https://forums.suse.com/t/waiting-for-device-to-appear/27951/3 "2016-03-09T18:06:53Z")

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Hi Jens,

I tried this - but wasn’t successfull. With this kernel parameter added the  
system never booted, but endlessly produces udev messages to the screen. I’m  
not familiar with udev, and it was way too much messages, so I don’t know if  
they made any sense or indicated errors…

There are some factors with this machine (IBM x3650 M4) which make me feel  
slightly overcharged…

- it’s my first and only UEFI system
- bootmanager is ELILO not GRUB
- it has many disks: 2 RAID internal controller, 5 RAID1 arrays
- 12 multipath devices on a IBM Storwize (SAS)

Probably I missed some important setting somewhere… (?)

Thanks,  
Mirko

jmozdzen wrote:  
[color=blue]

> Hi Mirko,
> 
> sounds like some timing issue. You might want to start in debug mode  
> (i.e. by adding kernel parameter “linuxrc=trace”), so that you get more  
> output from the setup scripts.
> 
> Regards,  
> Jens
> 
> [/color]

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<div class="post-metadata">

**Author:** ![Jens-U](https://avatars.discourse-cdn.com/v4/letter/j/d78d45/32.png) [@Jens-U](https://forums.suse.com/u/Jens-U)\
**Post date:** [March 9, 2016, 6:55pm UTC](https://forums.suse.com/t/waiting-for-device-to-appear/27951/4 "2016-03-09T18:55:37Z")

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Hi Mirko,

[QUOTE=Mirko Guldner;31809]Hi Jens,

There are some factors with this machine (IBM x3650 M4) which make me feel  
slightly overcharged…

- it’s my first and only UEFI system
- bootmanager is ELILO not GRUB
- it has many disks: 2 RAID internal controller, 5 RAID1 arrays
- 12 multipath devices on a IBM Storwize (SAS)

Probably I missed some important setting somewhere… (?)[/QUOTE]

this might be a good reason to ask for SUSE support by opening a service request - do you have an according support contract?

Best regards,  
Jens