Bug 811901 - [openSUSE 12.3] installation gets stuck at linux partitions scan
Summary: [openSUSE 12.3] installation gets stuck at linux partitions scan
Status: RESOLVED DUPLICATE of bug 773058
Alias: None
Product: openSUSE 12.3
Classification: openSUSE
Component: Installation (show other bugs)
Version: Final
Hardware: x86-64 SUSE Other
: P5 - None : Minor (vote)
Target Milestone: ---
Assignee: Thomas Fehr
QA Contact: Jiri Srain
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-03-27 05:23 UTC by Илья Колодяжный
Modified: 2013-04-03 08:07 UTC (History)
0 users

See Also:
Found By: ---
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---


Attachments
YaST2 installation logs (659.89 KB, application/x-gzip)
2013-03-27 21:43 UTC, Илья Колодяжный
Details
sudo strace -tt /sbin/blkid -c /dev/null 2> strace.output (86.05 KB, text/plain)
2013-03-29 10:50 UTC, Илья Колодяжный
Details

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Description Илья Колодяжный 2013-03-27 05:23:58 UTC
User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0

Trying to install 12.3 x86_64.

I have:
* 2 NTFS partitions
* hidden Windows 7 system partition
* one EXT4
* one SWAP

The DVD installer starts fine, but while the probing step of "Looking for existing linux partitions...", at 60%, it gets stuck, and no HDD or DVD activity is visible on my PC. I had to wait about 15-20 minutes until the scanning was complete. One more user has reported this kind of behavior.  

Following openSUSE topic describes this case: 
https://forums.opensuse.org/english/get-technical-help-here/install-boot-login/485066-installation-gets-stuck-while-scanning-hdd-partitions.html

Reproducible: Always

Steps to Reproduce:
1.run installation
2.
3.
Actual Results:  
installation gets stuck for 15-20 minutes at partition scan

Expected Results:  
partition scan should take about 10-15 seconds, according to virtualbox experience
Comment 1 Fei Xiang Zhang 2013-03-27 06:14:49 UTC
please attach y2logs.if you are in doubt follow:
http://en.opensuse.org/openSUSE:Bugreport_YaST
thanks
Comment 2 Илья Колодяжный 2013-03-27 21:43:30 UTC
Created attachment 532242 [details]
YaST2 installation logs

I hope this file helps.
Comment 3 Thomas Fehr 2013-03-28 09:12:52 UTC
Reassign to maintainer of yast2-storage
Comment 4 Thomas Fehr 2013-03-28 09:45:16 UTC
I had a look at the log file and saw that some external commands we call during 
fs detection is extremely slow:
We call the command "/sbin/blkid -c /dev/null" it needs 562 seconds to finish
in addition an "/sbin/mdadm --examine --scan --config=partitions" needs 55 
seconds.
Both commands typically need less than a tenth of a second to complete.

Please try the following command:
strace -tt /sbin/blkid -c /dev/null 2> strace.output
And attach the generated file strace.output here.

It should display which system calls delay the command for such a long time.
If you do not have command strace installed, you can install it 
with "zypper in strace".
Comment 5 Thomas Fehr 2013-03-28 09:54:42 UTC
I had a look for similar problems and it look like it could be the same as in
bnc#773058
Comment 6 Илья Колодяжный 2013-03-29 10:50:39 UTC
Created attachment 532644 [details]
sudo strace -tt /sbin/blkid -c /dev/null 2> strace.output
Comment 7 Thomas Fehr 2013-04-02 09:34:22 UTC
This call of blkid was not delayed, it needed 0.4 seconds to complete.
We need the output of a strace call where the delay happens.
Maybe the delay happens only in installation environment. If yes
could you boot into install environment and recreate the strace
output.
Comment 8 Илья Колодяжный 2013-04-03 04:39:44 UTC
I have disabled the floppy support inside the BIOS, set to NONE, and the installation went nice and fast. I guess this bug can be marked as duplicate of #773058. Thanks everyone.
Comment 9 Thomas Fehr 2013-04-03 08:07:54 UTC
Resolving as duplicate.

*** This bug has been marked as a duplicate of bug 773058 ***