[Ocfs2-devel] vmstore option - mkfs

[Artur Baruchi]

I just found this:

+	{OCFS2_FEATURE_COMPAT_BACKUP_SB | OCFS2_FEATURE_COMPAT_JBD2_SB,
+	 OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC |
+	 OCFS2_FEATURE_INCOMPAT_INLINE_DATA |
+	 OCFS2_FEATURE_INCOMPAT_XATTR |
+	 OCFS2_FEATURE_INCOMPAT_REFCOUNT_TREE,
+	 OCFS2_FEATURE_RO_COMPAT_UNWRITTEN},  /* FS_VMSTORE */

These options are the ones that, when choosing for vmstore, are
enabled by default. Is this correct?

Thanks.

Att.
Artur Baruchi



On Wed, Nov 16, 2011 at 3:26 PM, Sunil Mushran <sunil.mushran at oracle.com> wrote:
> fstype is a handy way to format the volume with parameters that are thought
> to be useful for that use-case. The result of this is printed during format
> by
> way of the parameters selected. man mkfs.ocfs2 has a blurb about the
> features
> it enabled by default.
>
> On 11/16/2011 08:45 AM, Artur Baruchi wrote:
>>
>> Hi.
>>
>> I tried to find some information about the option vmstore when
>> formating a device, but didnt found anything about it (no
>> documentation, I did some greps inside the source code, but nothing
>> returned). My doubts about this:
>>
>> - What kind of optimization this option creates in my file system to
>> store vm images? I mean.. what does exactly this option do?
>> - Where, in source code, I can find the part that makes this optimization?
>>
>> Thanks in advance.
>>
>> Att.
>> Artur Baruchi
>>
>
>