Re: [Ocfs2-users] [Ocfs2-devel] vmstore option - mkfs
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 ___ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
Re: [Ocfs2-users] [Ocfs2-devel] vmstore option - mkfs
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.mush...@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
___
Ocfs2-users mailing list
Ocfs2-users@oss.oracle.com
http://oss.oracle.com/mailman/listinfo/ocfs2-users
Re: [Ocfs2-users] [Ocfs2-devel] vmstore option - mkfs
Yes. But this is just the features. It also selects the appropriate cluster
size, block size,
journal size, etc. All the params selected are printed by mkfs. You also have
the option of
running with the --dry-option to see the params.
On 11/16/2011 09:41 AM, Artur Baruchi wrote:
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 Mushransunil.mush...@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
___
Ocfs2-users mailing list
Ocfs2-users@oss.oracle.com
http://oss.oracle.com/mailman/listinfo/ocfs2-users
Re: [Ocfs2-users] [Ocfs2-devel] vmstore option - mkfs
That's fine...
Using vmstore:
vegeta:~ # mkfs.ocfs2 -T vmstore -n /dev/drbd1
mkfs.ocfs2 1.4.3
Dry run
Filesystem Type of vmstore
Label:
Features: sparse backup-super unwritten inline-data
strict-journal-super metaecc xattr indexed-dirs refcount
Block size: 4096 (12 bits)
Cluster size: 131072 (17 bits)
Volume size: 16105472000 (122875 clusters) (3932000 blocks)
Cluster groups: 4 (tail covers 26107 clusters, rest cover 32256 clusters)
Extent allocator size: 8388608 (2 groups)
Journal size: 134217728
Node slots: 8
Default mkfs:
vegeta:~ # mkfs.ocfs2 -n /dev/drbd1
mkfs.ocfs2 1.4.3
Dry run
Label:
Features: sparse backup-super unwritten inline-data
strict-journal-super metaecc xattr indexed-dirs
Block size: 4096 (12 bits)
Cluster size: 4096 (12 bits)
Volume size: 16105598976 (3932031 clusters) (3932031 blocks)
Cluster groups: 122 (tail covers 29055 clusters, rest cover 32256 clusters)
Extent allocator size: 4194304 (1 groups)
Journal size: 100659200
Node slots: 8
Thanks for your help.
Att.
Artur Baruchi
On Wed, Nov 16, 2011 at 3:45 PM, Sunil Mushran sunil.mush...@oracle.com wrote:
Yes. But this is just the features. It also selects the appropriate cluster
size, block size,
journal size, etc. All the params selected are printed by mkfs. You also
have the option of
running with the --dry-option to see the params.
On 11/16/2011 09:41 AM, Artur Baruchi wrote:
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 Mushransunil.mush...@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
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