Bug 858668

Summary: It took too long time to formatting system when install the guest using multi disks
Product: Red Hat Enterprise Linux 5 Reporter: yunpingzheng <yunzheng>
Component: kvmAssignee: Virtualization Maintenance <virt-maint>
Status: CLOSED WONTFIX QA Contact: Virtualization Bugs <virt-bugs>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 5.9CC: chayang, juhe, juzhang, kwolf, michen, mkenneth, rhod, virt-maint, wquan, xigao
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-04-10 13:59:26 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
qemu-command none

Description yunpingzheng 2012-09-19 11:49:14 UTC
Description of problem:
when install rhel5.9.64(guest)  on rhel5.9.64(host) with multi disk. it take too log time to formatting / file system(more than 50min).

Version-Release number of selected component (if applicable):


How reproducible:
 100%

Steps to Reproduce:
1.create 25 qcow2 disks,every disk size is 20G
2. un unattended_install using cdrom with multiple disks (25 disk qcow2)

  
Actual results:
 more than 50 mins

Expected results:
 

Additional info:
kernel: kernel-2.6.18-339.el5
kvm: kmod-kvm-83-259.el5

host cpuinfo:
processor	: 15
vendor_id	: AuthenticAMD
cpu family	: 16
model		: 9
model name	: AMD Opteron(tm) Processor 6128
stepping	: 1
cpu MHz		: 2000.046
cache size	: 512 KB
physical id	: 2
siblings	: 8
core id		: 3
cpu cores	: 8
apicid		: 39
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow rep_good constant_tsc nonstop_tsc amd_dcm pni cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt nodeid_msr
bogomips	: 4000.14
TLB size	: 1024 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate [8]


mem info:
[root@hp-dl385g7-02 ~]# free -m
             total       used       free     shared    buffers     cached
Mem:         15888       6677       9211          0        155       1229
-/+ buffers/cache:       5292      10595
Swap:        16383         38      16345

Comment 1 yunpingzheng 2012-09-19 11:50:07 UTC
Created attachment 614317 [details]
qemu-command

Comment 2 Ronen Hod 2012-09-22 16:15:31 UTC
yunpingzheng,

Is this a regression? Is RHEL6 faster?
Postponing to 5.10.

Thanks, Ronen.