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From Andrei Mikhailovsky <>
Subject Re: KVM - Adding volume to Ubuntu Server is not shown
Date Mon, 23 Dec 2013 13:52:35 GMT


Thanks, i've checked and i do have the same udev version as you do and it is running. 

Are you not having any issues with automatic volume detection in your Ubuntu servers? 

----- Original Message -----

From: "Shanker Balan" <> 
To: "CloudStack-Users" <> 
Sent: Sunday, 22 December, 2013 3:12:01 AM 
Subject: Re: KVM - Adding volume to Ubuntu Server is not shown 

On 22-Dec-2013, at 2:19 am, Marty Sweet <> wrote: 

> As far as I know certain linux distributions will do it automatically every 
> so often, this may be wrong though. Did the guide fix the issue for you? 

Andrei, I hope your template has a working udev service: 

shanu@ubuntu1:~$ initctl status udev 
udev start/running, process 479 

shanu@ubuntu1:~$ apt-cache show udev 
Package: udev 
Priority: required 
Section: admin 
Installed-Size: 999 
Maintainer: Ubuntu Developers <> 
Architecture: amd64 
Version: 175-0ubuntu9.4 
Depends: libacl1 (>= 2.2.51-5), libc6 (>= 2.10), libglib2.0-0 (>= 2.16.0), libselinux1
(>= 1.32), upstart-job, libudev0 (>= 175), module-init-tools (>= 3.2.1-0ubuntu3),
initramfs-tools (>= 0.92bubuntu63), procps, adduser, util-linux (>> 2.15~rc2), upstart
(>= 1.4-0ubuntu6) 
Suggests: watershed 
Filename: pool/main/u/udev/udev_175-0ubuntu9.4_amd64.deb 
Size: 313866 
MD5sum: b3b79a458da89ed835d467d383c6041a 
SHA1: cd45a58a2b8ba260d51fbfc4698ad8af07b30de3 
SHA256: f72a0821911dfc2b1f6c39dab4de214e9f145e93dcff833d7b21c93ec808ebe3 
Description-en: rule-based device node and kernel event manager 
udev is a collection of tools and a daemon to manage events received from 
the kernel and deal with them in user-space. Primarily this involves 
creating and removing device nodes in /dev when hardware is discovered or 
removed from the system. 
Events are received via kernel netlink messaged and processed according to 
rules in /etc/udev/rules.d and /lib/udev/rules.d, altering the name of the 
device node, creating additional symlinks or calling other tools and programs 
including those to load kernel modules and initialise the device. 
Multi-Arch: foreign 
Description-md5: 2a0ce683ea15310e7ba291148124cb1e 
Origin: Ubuntu 
Supported: 5y 
Task: minimal 

> Marty 
> On Saturday, December 21, 2013, Andrei Mikhailovsky wrote: 
>> Marty, do you know if this process can be automated? 
>> Andrei 
>> ----- Original Message ----- 
>> From: "Marty Sweet" < <javascript:;>> 
>> To: <javascript:;> 
>> Sent: Saturday, 21 December, 2013 2:12:24 PM 
>> Subject: Re: KVM - Adding volume to Ubuntu Server is not shown 
>> Hi Andrei, 
>> This can be resolved by forcing a rescan to the relevant SCSI host, these 
>> instructions should work: 
>> Marty 
>> On Sat, Dec 21, 2013 at 12:49 PM, Andrei Mikhailovsky <<javascript:;>

>>> wrote: 
>>> Hi guys, 
>>> Was wondering if there is a workaround for this problem? 
>>> I am using KVM qemu version 1.5.0 and libvirt 1.1.4, ACS 4.2.0. Whenever 
>> I 
>>> add a new volume to Ubuntu server it is not being registered with the 
>>> server until it is rebooted. Checking dmesg output on the server does not 
>>> list any hardware changes. I am using the Ubuntu 12.04(64bit) template. 
>>> I've tested this on a Windows server and it works perfectly well without 
>> a 
>>> reboot. 
>>> Thanks 
>>> Andrei 


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