6:44 a.m.
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Stick your bricks on ZFS and let it do it for you. Works well, although =
I haven=92t done much benchmarking of it. My test setup is described in =
the thread under [Users] Creation of preallocated disk with Gluster =
replication. I=92ve seen some blog posts here and there about gluster on =
ZFS for this reason too.
-Darrell
On Jan 7, 2014, at 9:56 PM, Russell Purinton <russ(a)sonicbx.com> wrote:
[20:42] <sonicrose> is anybody out there using a good RAM+SSD
caching =
system ahead of gluster storage?
[20:42] <sonicrose> sorry if that came through twice
[20:44] <sonicrose> im thinking about making the SSD one giant swap =
file
then creating a very large ramdisk in virtual memory and using that =
as a block level cache for parts and pieces of virtual machine disk =
images
[20:44] <sonicrose> then i think the memory managers would
inherently =
play the role of storage tiering ie: keeping the hottest data in memory
=
and the coldest data on swap
[20:45] <sonicrose> everything i have seen today has been setup
as =
"consumer" =3D=3D=3D> network =3D=3D=3D=3D> SSD cache
=3D=3D=3D=3D> =
real disks
[20:45] <sonicrose> but i'd like to actually do
"consumer" =3D=3D=3D> =
RAM+SSD cache =3D=3D=3D> network
=3D=3D=3D> real disks
[20:46] <sonicrose> i realize doing a virtual memory disk means
the =
cache will be cleared on every reboot, and I'm ok with that
[20:47] <sonicrose> i know this can be done with NFS and =
cachefilesd(fscache), but how could something be integrated into the =
native gluster clients?
[20:47] <sonicrose> i'd prefer not to have to access
gluster via NFS
[20:49] <sonicrose> any feedback from this room is greatly =
appreciated,
getting someone started to build managed HA cloud hosting
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
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=
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Stick =
your bricks on ZFS and let it do it for you. Works well, although I =
haven=92t done much benchmarking of it. My test setup is described in =
the thread under [Users] Creation of preallocated disk with Gluster =
replication. I=92ve seen some blog posts here and there about gluster on =
ZFS for this reason =
too.<div><br></div><div> -Darrell<br><div><br><div><div>On
Jan 7, =
2014, at 9:56 PM, Russell Purinton <<a =
href=3D"mailto:russ@sonicbx.com">russ@sonicbx.com</a>> =
wrote:</div><br class=3D"Apple-interchange-newline"><blockquote
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<div class=3D"WordSection1"><p class=3D"MsoNormal" =
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<span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:42]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
is anybody out there using a good RAM+SSD caching system ahead of =
gluster storage?<o:p></o:p></span></p><p
class=3D"MsoNormal" =
style=3D"margin-left:10.0pt;text-indent:-10.0pt;text-autospace:none">
<span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:42]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
sorry if that came through twice<o:p></o:p></span></p><p =
class=3D"MsoNormal" =
style=3D"margin-left:10.0pt;text-indent:-10.0pt;text-autospace:none">
<span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:44]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
im thinking about making the SSD one giant swap file then creating a =
very large ramdisk in virtual memory and using that as a
block level cache for parts and pieces of virtual machine disk =
images<o:p></o:p></span></p><p class=3D"MsoNormal" =
style=3D"margin-left:10.0pt;text-indent:-10.0pt;text-autospace:none">
<span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:44]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
then i think the memory managers would inherently play the role of =
storage tiering ie: keeping the hottest data in memory and
the coldest data on swap<o:p></o:p></span></p><p
class=3D"MsoNormal" =
style=3D"margin-left:10.0pt;text-indent:-10.0pt;text-autospace:none">
<span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:45]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
everything i have seen today has been setup as =
"consumer" =3D=3D=3D> network =3D=3D=3D=3D>
SSD cache =
=3D=3D=3D=3D> real disks<o:p></o:p></span></p><p
class=3D"MsoNormal" =
style=3D"margin-left:10.0pt;text-indent:-10.0pt;text-autospace:none">
<span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:45]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
but i'd like to actually do "consumer" =3D=3D=3D> RAM+SSD cache =
=3D=3D=3D> network =3D=3D=3D> real =
disks<o:p></o:p></span></p><p class=3D"MsoNormal" =
style=3D"margin-left:10.0pt;text-indent:-10.0pt;text-autospace:none">
<span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:46]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
i realize doing a virtual memory disk means the cache will be cleared on =
every reboot, and I'm ok with that<o:p></o:p></span></p><p
=
class=3D"MsoNormal" =
style=3D"margin-left:10.0pt;text-indent:-10.0pt;text-autospace:none">
<span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:47]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
i know this can be done with NFS and cachefilesd(fscache), but how could =
something be integrated into the native gluster =
clients?<o:p></o:p></span></p><p class=3D"MsoNormal"
=
style=3D"margin-left:10.0pt;text-indent:-10.0pt;text-autospace:none">
<span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:47]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
i'd prefer not to have to access gluster via
NFS<o:p></o:p></span></p><p =
class=3D"MsoNormal"><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:gray;background:white;mso-highlight:white">[20:49]
</span><span =
style=3D"font-size:9.0pt;font-family:"Verdana","sans-serif&=
quot;;color:navy;background:white;mso-highlight:white"><sonicrose>
=
any feedback from this room is greatly appreciated, getting someone =
started to build managed HA cloud hosting</span><o:p></o:p></p>
</div>
</div>
_______________________________________________<br>Users mailing =
list<br><a =
href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br>http://lists.ovirt.=
org/mailman/listinfo/users<br></blockquote></div><br></div></div></body></=
html>=
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