[libvirt] [RFC] Usage about 'virsh vol-wipe vol_name'

[harryxiyou]

On Fri, Apr 12, 2013 at 12:42 PM, Osier Yang <jyang at redhat.com> wrote:

Hi Osier,

>>
>> On Fri, Apr 12, 2013 at 10:22 AM, harryxiyou <harryxiyou at gmail.com> wrote:
>>>
>>> Hi all,
>>>
>>> I am not very clear about the usage of ‘virsh vol-wipe vol_name’. I think
>>> if 'virsh vol-wipe vol_name' can just wipe all the datas in this volume
>>> and
>>> it is similar as we format a volume which the datas would be wiped,
>>> right?
>>> After this wipe, we can use this volume like a new one.
>>
>> After i read the back-end storage drivers for libvirt, i cannot find any
>> storage
>> driver like following
>>
>> 128     VIR_STORAGE_POOL_DIR,      /* Local directory */
>> 129     VIR_STORAGE_POOL_FS,       /* Local filesystem */
>> 130     VIR_STORAGE_POOL_NETFS,    /* Networked filesystem - eg NFS, GFS,
>> etc */
>> 131     VIR_STORAGE_POOL_LOGICAL,  /* Logical volume groups / volumes */
>> 132     VIR_STORAGE_POOL_DISK,     /* Disk partitions */
>> 133     VIR_STORAGE_POOL_ISCSI,    /* iSCSI targets */
>> 134     VIR_STORAGE_POOL_SCSI,     /* SCSI HBA */
>> 135     VIR_STORAGE_POOL_MPATH,    /* Multipath devices */
>> 136     VIR_STORAGE_POOL_RBD,      /* RADOS Block Device */
>> 137     VIR_STORAGE_POOL_SHEEPDOG, /* Sheepdog device */
>>
>> has realized storageVolumeWipe feature. So how could we test this feature?
>
>
> As Michal suggested in your previous mail, cscope is a good choice for
> you to learn libvirt. E.g. If you looked at the public API for volWipe in
> src/libvirt.c, and using cscope like:
>
> cs find s volWipe
>
> You will get where it's implemented.
>

Actually, i can find volWipe itself. Let me find deeply.


--
Thanks
Harry Wei