[Libguestfs] guestfs_mount_local api test: have to 'mount' before calling it?

[Nok]

On 05/14/2012 05:16 AM, Richard W.M. Jones wrote:
> On Sun, May 13, 2012 at 11:55:34AM +0800, Nok wrote:
>> Hi
>>
>> I`ve been trying this guestfs_mount_local api for quite a few days,
>> but still can`t get over it.
>> Now it seems to have enter the fuse loop but have some problems with
>> 'mount'，
>> and stops at guestfs_mount_local_run(g).
>>
>> Here`s corresponding code in the test program:
>> ……
>> if(guestfs_mount_local(g,"/mnt/libg")==-1)
>> exit(EXIT_FAILURE);
>> else
>> guestfs_mount_local_run(g);
>> ……
>>
>> Below is a part of the debug dump information,
>>
>> ……
>> version = 1.17.40.Root device: /dev/vda1 (this is test output)
>>
>> libguestfs: guestfs__mount_local: fuse_mount /mnt/libg
>> libguestfs: guestfs__mount_local: fuse_new
>> libguestfs: guestfs__mount_local: leaving fuse_mount_local
>> libguestfs: guestfs__mount_local_run: entering fuse_loop
>> libguestfs: send_to_daemon: 56 bytes: 00 00 00 34 | 20 00 f5 f5 | 00
>> 00 00 04 | 00 00 00 35 | 00 00 00 00 | ...
>> guestfsd: main_loop: proc 11 (lvs) took 0.04 seconds
>> guestfsd: main_loop: new request, len 0x34
>> guestfsd: error: lstat_stub: you must call 'mount' first to mount
>> the root filesystem
> Are you actually mounting any filesystem before calling
> guestfs_mount_local?
I just realized that I didn`t mount the /dev/sda to guestfs appliance 
mount point
as you wrote in the example " 
guestfs_mount_options(g,"acl,user_xattr","/dev/sda1","/")".
i guess that must be the problem in my testcase and the reason why
  it kept prompting "must call' mount' first".
>
> I'll try to write a small example program and send it.
>
>> guestfsd: main_loop: proc 53 (lstat) took 0.00 seconds
>> libguestfs: recv_from_daemon: 116 bytes: 20 00 f5 f5 | 00 00 00 04 |
>> 00 00 00 35 | 00 00 00 01 | 00 12 34 36 | ...
>> libguestfs: error: lstat: lstat_stub: you must call 'mount' first to
>> mount the root filesystem
>> libguestfs: send_to_daemon: 56 bytes: 00 00 00 34 | 20 00 f5 f5 | 00
>> 00 00 04 | 00 00 00 35 | 00 00 00 00 | ...
>> guestfsd: main_loop: new request, len 0x34
>>
>> ……
>>
>> Any idea what might be wrong with it?the fuse?
> Rich.
>
Thanks for your nice example program!

Nok
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