Bug 578123

Summary: virt-df numbers don't match numbers from 'df' inside the guest
Product: [Community] Virtualization Tools Reporter: Richard W.M. Jones <rjones>
Component: libguestfsAssignee: Richard W.M. Jones <rjones>
Status: CLOSED UPSTREAM QA Contact:
Severity: medium Docs Contact:
Priority: low    
Version: unspecifiedCC: mbooth, rwu, virt-maint
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Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2010-05-12 12:22:12 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Richard W.M. Jones 2010-03-30 10:05:46 UTC 
[Notes:
(1) We wouldn't expect the numbers to exactly match
(2) Originally reported by Rita Wu ]

>> [root@dhcp-66-83-61 ~]# df -h                                                
>> Filesystem            Size  Used Avail Use% Mounted on                       
>> /dev/mapper/VolGroup00-LogVol00                                              
>>                       11G  2.5G  7.7G  25% /                                 
>> /dev/hda1              99M   13M   82M  14% /boot                            
>> tmpfs                1006M     0 1006M   0% /dev/shm                         
>>                                                                              
>>                                                                              
>> [root@dhcp-65-82 ~]# virt-df RHEL-Server-5.5-64-2.qcow2 -h                   
>> Filesystem                                Size       Used  Available  Use%   
>> RHEL-Server-5.5-64-2.qcow2:/dev/VolGroup00/LogVol00                          
>>                                         10.6G       2.4G       7.7G 27.4%    
>> RHEL-Server-5.5-64-2.qcow2:/dev/vda1     98.7M      12.3M      81.4M 17.6%   
>>                                                                              

We can get to the raw numbers using 'stat -f' inside
the guest and guestfish outside:

In the guest:

>   stat -f /                                                                   
>   stat -f /boot                                                               

At the same time on the host:

>   guestfish --ro -i RHEL-Server-5.5-64-2.qcow2                                
>     statvfs /                                                                 
>     statvfs /boot                                                             

The numbers from Rita's box:

*************************************************
[root@dhcp-66-83-61 ~]# stat -f /
File: "/"
ID: 0 Namelen: 255 Type: ext2/ext3
Block size: 4096 Fundamental block size: 4096
Blocks: Total: 2785260 Free: 2143397 Available: 1999628
Inodes: Total: 2877952 Free: 2768362
[root@dhcp-66-83-61 ~]# stat -f /boot
File: "/boot"
ID: 0 Namelen: 255 Type: ext2/ext3
Block size: 1024 Fundamental block size: 1024
Blocks: Total: 101086 Free: 88539 Available: 83320
Inodes: Total: 26104 Free: 26070

***************************************************
[root@dhcp-65-82 rwu]# guestfish --ro -i RHEL-Server-5.5-64.qcow2
...
><fs> statvfs /                                                                 
bsize: 4096
frsize: 4096
blocks: 2785260
bfree: 2143396
bavail: 1999627
files: 2877952
ffree: 2768362
favail: 2768362
fsid: 7314991891090550097
flag: 0
namemax: 255
><fs> statvfs /boot                                                             
bsize: 1024
frsize: 1024
blocks: 101086
bfree: 88539
bavail: 83320
files: 26104
ffree: 26070
favail: 26070
fsid: -2087154354
flag: 0
namemax: 255


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

1.0.88
Comment 1 Richard W.M. Jones 2010-03-30 15:19:42 UTC 
The following upstream commit should fix this:
http://git.annexia.org/?p=libguestfs.git;a=commitdiff;h=29c78cc979297b95407a5956b4caa34240a2f5a8
Comment 2 Fedora Update System 2010-04-09 14:10:11 UTC 
libguestfs-1.2.1-1.fc13 has been submitted as an update for Fedora 13.
http://admin.fedoraproject.org/updates/libguestfs-1.2.1-1.fc13
Comment 3 Fedora Update System 2010-04-13 07:43:45 UTC 
libguestfs-1.2.2-1.fc13 has been submitted as an update for Fedora 13.
http://admin.fedoraproject.org/updates/libguestfs-1.2.2-1.fc13
Comment 4 Fedora Update System 2010-04-30 23:46:55 UTC 
libguestfs-1.2.2-1.fc13 has been pushed to the Fedora 13 stable repository.  If problems still persist, please make note of it in this bug report.