thin s pace reclamat ion with emc® vplex - dell emc us · space recl hnical notes number h1 plex 5...
TRANSCRIPT
T
Technical No
Thin S VM EM
otes
Spaceware ESXC XtremIO
Abs
Thisstor
Mar
e ReclXi, MicrosO™, EMC
stract
s document drage on thin
rch 2015
lamatsoft WindC VMAX3
describes ma LUNs using h
ion wdows, Ge™, and E
anual proced host-based to
with EMeneric UN EMC VNX
dures that caools along w
MC® NIX / LinuX™
n be used towith VPLEX da
VPLEXux
reclaim conata mobility.
X™
sumed
2 TTThin LUN SpaTechnical No
ace Reclaim otes
Cop
Pub
EMCThe
Thereppubfitndes
EMCCorher
For Trad
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Using EMC V
pyright © 201
blished Marc
C believes the information
e informationresentations
blication, andess for a par
scribed in thi
C2, EMC, andrporation in tein are the p
the most updemarks on E
n Space Reclchnical Notes
t Number h1
VPLEX
15 EMC Corp
h 2015
he informatio is subject to
in this publis or warrantied specificallyticular purpos publication
d the EMC loghe United Stroperty of th
-to-date listin EMC.com.
lamation wits
4055
poration. All r
n in this pubo change with
ication is proes of any kindy disclaims imose. Use, copn requires an
go are registeates and otheir respectiv
ng of EMC pr
h EMC VPLEX
rights reserve
blication is achout notice.
ovided as is. d with respecmplied warrapying, and disn applicable s
ered trademaher countries.e owners.
roduct names
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ed. Published
ccurate as of
EMC Corporact to the info
anties of mercstribution of
software lice
arks or tradem. All other tra
s, see EMC C
d in the USA.
f its publicati
ation makes rmation in thchantability any EMC sofnse.
marks of EMCademarks use
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no his or ftware
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The
The
The
apter 1 Inpose ............
ope ...............
dience ..........
cument Orga
cess Overvie
apter 2 TLEX Thin Prov
LEX Rebuilds
LEX Mobility t
Extent Migrat
Device Migra
ware API for A
Compare and
WriteSame (1
X2 Thin Provi
AX3 Thin Pro
VMware vSto
emIO Thin Pro
XtremIO’s su
n Provisionin
apter 3 Vware ESXi Re
tual Machine
w Data Mapp
tastores (VMF
apter 4 GX / Linux File
e “dd” Comm
e “mount –o d
e “fstrim” Com
ntroduction....................
....................
....................
nization .......
ew ................
Thin Provisiovisioning ......
for Thin Dev
to Reclaim U
tions ............
ations ...........
Array Integra
d Write .........
16) ...............
sioning ........
ovisioning .....
orage API for
ovisioning ...
pport for the
ng Summary .
VMware ESXeclaim ..........
Disks (VMD
ings (RDMs) .
FS) ...............
Generic UNIXesystem Recl
mand .............
discard” Com
mmand ........
n ....................
....................
....................
....................
....................
oning ....................
ices .............
nused Space
....................
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ation (VAAI) S
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VMAX3 ........
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e VAAI ...........
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Xi ....................
Ks) ...............
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X / Linux laim .............
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aim Using EMTechnic
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Contents
MC VPLEX cal Notes
ents
6 ............ 7
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9 .......... 10
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15 .......... 16
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18 .......... 19
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3
4 TT
Contents
Thin LUN SpaTechnical No
ace Reclaim otes
ChaThin
Sto
Usi
UNM
Usi
Scri
AppSpa
v
AppSpa
s
AppSpa
H
V
Using EMC V
apter 5 Mn Provisionin
rage Space R
ng the UNMA
MAP Request
ng the sdelet
ipting with P
pendix A Vace Reclamat
vmkfstools --
pendix B Wace Reclamat
sdelete.exe ..
pendix C Lace Reclamat
How Data Mo
VPLEX Data M
VPLEX
Microsoft Wng LUN Identi
Reclamation .
AP Command
ts from Hype
te.exe Comm
owerShell ....
VMware ESXtion with VMw
-punchzero ..
Windows RDtion with Mic
....................
Linux with Etion through
obility Works
Mobility ........
indows ification .......
....................
d ...................
r-V ...............
mand ............
....................
Xi UNMAP Exware ESXi ....
....................
DM Examplecrosoft Windo
....................
MC VPLEX a VPLEX Mobil
...................
....................
....................
....................
....................
....................
....................
....................
xamples ....................
....................
e ows ..............
....................
and VNX lity Jobs .......
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21 .......... 22
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24 .......... 25
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28 .......... 29
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31 .......... 32
.......... 32
.......... 33
FigFigu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
Figu
ures ure 1 - Opera
ure 2 - VPLEX
ure 3 - VMwa
ure 4 - LUN U
ure 5 - Deleti
ure 6 - LUN U
ure 7 - Using
ure 8 - LUN U
ure 9 - Inflate
ure 10 - Exam
ure 11 - Defla
ure 12 - File S
ure 13 - Exam
ure 14 - File s
ure 15 - SuSE
ure 16 - Delet
ure 17 - SuSE
ure 18 – Sett
ure 19 - VPLE
ure 20 - Creat
ure 21 - Selec
ure 22 - Creat
ure 23 - SuSE
ting System
X Virtualized S
re Storage La
tilization Prio
ng Files on th
tilization Aft
“dd” to Fill t
tilization afte
ed VMDK Size
mple of Runni
ated VMDK S
Size Prior to R
mple of runni
size after run
E_OS_LUN_0
ting a file an
E_OS_LUN_0
ting the Thin
EX Data Mobi
te Device Mo
ct Virtual Vol
te Source / T
E_OS_LUN_1
Process Flow
Storage ........
ayers ...........
or to File Del
he Guest Hos
er File Deleti
he Free Disk
er Space Rec
e prior to vmk
ing “vmkfsto
ize after runn
Running sdel
ng sdelete.ex
ning sdelete
Consumed C
d zeroing the
Consumed C
Rebuild Attri
lity ..............
obility Job .....
lume ............
Target Mobilit
Consumed C
Thin LUN
w ..................
....................
....................
etion ...........
st .................
on ...............
Space with Z
clamation .....
kfstools .......
ools --punchz
ning vmkfsto
lete.exe .......
xe ................
e.exe ............
Capactiy ......
e filesystem .
Capacity unc
ibute ............
....................
....................
....................
ty mapping ..
Capacity ......
Space Recla
....................
....................
....................
....................
....................
....................
Zeroes .........
....................
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zero" ............
ools ..............
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changed .......
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aim Using EMTechnic
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Contents
MC VPLEX cal Notes
............ 8
.......... 10
.......... 16
.......... 25
.......... 25
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5
6 TT
Chapter 1: Int
Thin LUN SpaTechnical No
roduction
ace Reclaim otes
This
Pur
Sco
Aud
Doc
Pro
Using EMC V
s chapter pre
rpose ...........
ope ..............
dience .........
cument Orga
cess Overvie
VPLEX
esents the fo
....................
....................
....................
nization ......
ew ...............
llowing topic
....................
....................
....................
....................
....................
Chapte
cs:
...................
...................
...................
...................
...................
er 1 In
....................
....................
....................
....................
....................
ntroduc
...................
...................
...................
...................
...................
ction
........... 7
........... 7
........... 7
........... 7
........... 7
A
Purpose
Scope
Audience
Documen
Process
Manstanzeroresusitu
Thisrecl
e
Thiswilltech
nt Organ
This
Secrecl
Secope
Overview
ThereclDepothdatdelezeromanspa
ny applicationdard initialioes are writteult of these p
uations that c
s technical nlaim previous
s technical n be configurihnologies is
Server and
Storage A
Fiber Chan
VPLEX Con
ization
s technical n
ction One: Ealaiming all-ze
ction Two: Therating system
w
e foundation laimed for thpending on ther cases levea mobility joeted the spaoes by the stnual process
ace can then
ons have the ization, allocen. The potenprocesses. Th cause zeroes
ote outline ssly used non
ote is intending, installing required:
d Application
rchitecture a
nnel Block St
ncepts and C
ote is divide
ach host opeero marked s
e appendix sm.
of thin device thin pool thhe back-end eraging VPLEXb. In many, ice that was o
tandard delets must be use be reclaimed
potential to cation, or migntial exists tohis technical s to be written
shows how to-zero space w
ded for EMC fg, and suppo
n Administrat
and Network
torage Conce
Components
d into multip
erating systemspace.
section will c
e space reclahat provides array, zeroesX’s built-in thf not all case
originally write commanded to overwrid by the back
Thin LUN
write zeroes gration proceo reclaim the note discussn to storage
o reclaim all-z with host-ba
field personnorting VPLEX.
tion
Design
epts
ple sections:
ms and their
contain real w
amation is th the backings may be dedhin awareneses, when a filtten for the f(s) used in Uite the newlyk-end storage
C
Space Recla
to free spacesses. Depene storage spases some of devices.
zero space aased applicat
nel, partners,. An underst
specific requ
world exampl
hat a zero wrig storage for tduplicated inss to deduplle is written t
file will not bUNIX and Winy freed spacee array.
Chapter 1: Intr
aim Using EMTechnic
e as part of tnding on the wace allocated the most com
and also howtions.
and customanding of the
uirements fo
les for each h
itten to disk the thin devin the array, oicate zeroes
to a filesysteme overwritten
ndows system with zeroes
roduction
MC VPLEX cal Notes
the way d as a mmon
w to
ers who ese core
r
host
can be ce. r in with a m, then n with ms. A so the
7
8 TT
Chapter 1: Int
Thin LUN SpaTechnical No
roduction
ace Reclaim otes
Therunreqlayeresp
Ded
Stoautnew
On leveawadat
Thespa
Fig
Using EMC V
e first thing toning on harduired to fullyer. The procepectively, reg
duplication o
rage arrays tomatically re
wly claimed s
storage arrayeraged to moare, VPLEX wa to the new
e following floace on Thin L
gure 1 - Ope
VPLEX
o consider is dware. If it is y reclaim the edures for zergardless if th
on back-end s
hat support declaim and frspace. No fur
ys that do noove a zeroed ill preserve t LUN, thereby
owchart diagUNs.
erating Syst
whether or n running as a space, both roing filesyste system is r
storage array
deduplicatioee space on
rther action is
ot support de thin LUN to ahe thin-nessy re-thinning
grams the bas
tem Process
not the systea virtual mach at the hypervtems for UNIX running virtu
y
on, such as th thin LUNs ass required.
eduplication, a new thin LU
of devices ag the device.
sic procedure
s Flow
m is a virtuahine, additiorvisor layer anX and Windowalized or not
he EMC Xtrems the zeroes a
VPLEX Data UN. Althoughand will only
es required t
l machine or nal clean-upnd the storagws are the sat.
mIO, will are written to
Mobility canh VPLEX is no transfer the n
to reclaim un
r it is p will be ge array ame,
o the
n be t thin
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visioning .....
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Array Integr
isioning .......
ovisioning ....
rovisioning ..
ng Summary
Chap
llowing topic
....................
vices ............
Unused Space
ration (VAAI)
....................
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....................
...................
Thin LUN
pter 2
cs:
...................
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e .................
Support ......
...................
...................
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Chapt
Space Recla
Thin P
....................
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ter 2: Thin Pro
aim Using EMTechnic
Provision
...................
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visioning
MC VPLEX cal Notes
ning
......... 10
......... 10
......... 11
......... 11
......... 12
......... 13
......... 13
......... 14
9
10 TT
V
V
Chapter 2: Thi
Thin LUN SpaTechnical No
VPLEX Th
VPLEX Re
in Provisioning
ace Reclaim otes
hin Provi
Tradcappro
Witapp“thibloc
Ben
Fig
Notecan
ebuilds f
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sioning
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h “Thin” provplication neein” device, Vcks to the tar
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e: By default, tell VPLEX to
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visioning youds it — when
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es future groment. This im the source to
te only the sthich means t
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requires the volume. Stora
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perating Syste storage volumort and VPLEX
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ter 2: Thin Pro
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volumes bein
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reclaiming ununy older versiohod of resolvi
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er or betwee
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ring virtual m
ray through t
te VMware ESXi to anoth
visioning
1MC VPLEX cal Notes
ng used
onnected ely
es is to im
UNMAP
used (or ons that ng this
s
r of
n
machines
the
her
11
12 TT
V
W
Chapter 2: Thi
Thin LUN SpaTechnical No
VNX2 Th
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and Distribut
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1MC VPLEX cal Notes
ere 5
at
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h faster
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es and
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4KB of both ead of
nt block omes for rence pping
block on
13
14 TT
T
Chapter 2: Thi
Thin LUN SpaTechnical No
Thin Prov
in Provisioning
ace Reclaim otes
Whrecosamidenwith
Xtrea spstorthefingbloc
visioning
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en a host wriognize this is
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...................
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...................
...................
...................
...................
ware ESXi
1MC VPLEX cal Notes
ESXi
......... 16
......... 16
......... 16
......... 17
15
16 TT
V
V
Chapter 3: VM
Thin LUN SpaTechnical No
VMware
Virtual M
Raw Data
Mware ESXi
ace Reclaim otes
ESXi Rec
In tbe zthe whiwill
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1MC VPLEX cal Notes
w the required
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2400
e UNs
al tastore
17
18 TT
Chapter 4: Ge
Thin LUN SpaTechnical No
neric UNIX / L
ace Reclaim otes
This
UNI
The
The
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inux
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....................
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UNIX / Li
...................
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inux
......... 19
......... 19
......... 19
......... 20
T
T
UNIX / Li
The “dd”
The “mo
inux Files
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Chapter 4
Space Recla
automatically, leaving the
ssue:
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mpletely fill them may receive ssociated with
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ro 0 1
Enabled.
IX / Linux
1MC VPLEX cal Notes
e data. act on
mand to ediately
e out of
h that
d file nce on much
card
19
20 TT
T
Chapter 4: Ge
Thin LUN SpaTechnical No
The “fstr
neric UNIX / L
ace Reclaim otes
rim” Com
Theblocprov
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r 5: Microsoft
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2MC VPLEX cal Notes
ows
......... 22
......... 22
......... 22
......... 22
......... 23
......... 23
21
22 TT
T
Chapter 5: Mi
Thin LUN SpaTechnical No
Thin Prov
Storage
Using th
UNMAP R
crosoft Windo
ace Reclaim otes
visioning
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TA TRIM uests to
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23
A
24 TT
Appendix A: V
Thin LUN SpaTechnical No
VMware ESXi U
ace Reclaim otes
This
Spa
UNMAP Examp
Using EMC V
Appe
s appendix p
ace Reclamat
ples
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endix A
presents the f
tion with VM
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following top
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P Examp
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ples
......... 25
v
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e environmenning on ESXi guest operarage backing
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2MC VPLEX cal Notes
ine ed and XtremIO
re not
/ Linux
n the
25
A
26 TT
Appendix A: V
Thin LUN SpaTechnical No
VMware ESXi U
ace Reclaim otes
Afteutil
Fig
Sincurrcom
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UNMAP Examp
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mIO array hasut any further
on after Sp
erver still repbeen reclaim
ile Deletion
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t automaticalfreed space. s de-duplicatr actions.
pace Reclama
ports that 11ed by the arr
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pace with Z
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Fig
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his point, theduped by the
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gure 9 - Inf
s 16 GB inclu. Follow thes
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gure 10 - Ex
3. Verify VM
gure 11 - De
e RDM disk he XtremIO bahas been inflated during t
ed to run the “
flated VMDK
udes the delee steps:
wn the guest
kfstools -
xample of Ru
MDK has bee
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ix A: VMware
Space Recla
space has behe VMDK filenal file and th order to resohzero” com
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ESXi UNMAP E
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een automate that is storehe temporarylve this discrmmand.
tten over the
ile/device loc
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Examples
2MC VPLEX cal Notes
tically ed on the y zeroes repancy
e deleted
cks.
DK.
27
A
28 TT
Appendix B: W
Thin LUN SpaTechnical No
Windows RDM
ace Reclaim otes
This
Spa
Pag
Example
Using EMC V
s appendix p
ace Reclamat
ge Break – DO
VPLEX
App
presents the f
tion with Mic
O NOT DELET
pendix B
following top
crosoft Wind
TE
B Wind
pics:
ows ............
dows RD
....................
DM Exam
...................
mple
......... 29
s
Space Re
sdelete.exe
eclamatio
Therunof cend
Notesde
In tattaspaunuinfla
Priothe
Fig
As pautleav
Thisunu
on with M
e environmenning on a 40
copying an ISded by Xtrem
e: It should belete.exe is not
his example,ached to a Guace available used space. Aated files on
or to deleting WIN2012_R
gure 12 - Fi
previously diomatically zeving the data
s is where thused filesyste
Microsoft
nt used for th GB VMDK fil
SO file to a 10IO.
e noted that Wt needed to de
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ile Size Pri
scussed, fileero out the da still intact o
e sdelete.em space wit
t Window
is example cle located on0 GB RDM all
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e Windows Se.
ior to Runn
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on the disk.
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ws
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o a Raw Deviystem does n of the Sdelemkfstools co
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and providesd ultimately f
Appendix B: W
Space Recla
Windows Sev_Datastore. a VPLEX that
space reclama
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s that there i
e.exe
ons of Microshe filesystem
s a quick and facilitate spa
Windows RDM
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erver Virtual M. Our test willt has been b
ation by defau
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mand to free t ESXi to free t
is 4.49 GB us
oft Server dom header is re
d easy way toace reclamati
Example
2MC VPLEX cal Notes
Machine l consist ack-
ult and
me the that he
sed on
oes not emoved,
o fill ion.
29
A
30 TT
Appendix B: W
Thin LUN SpaTechnical No
Windows RDM
ace Reclaim otes
Fig
AfteWIN
Fig
At tbachascreaneeexa
Example
Using EMC V
gure 13 - Ex
er deleting thN2012_RDM-
gure 14 - Fi
his point, theck-end storags been inflateated during ted to run the ample in App
VPLEX
xample of ru
he file(s), the-1 volume.
ile size aft
e RDM disk hge array. Howed from both the thinning p “vmkfstooendix-A.
unning sdel
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ter running
has been zerowever, the VM the original
process. In ools –punch
lete.exe
erver reports
g sdelete.ex
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that there is
xe
space has be is stored on temporary zelve this discrmmand as in
145 MB use
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n the previou
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This
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s appendix p
ace Reclamat
pendix C
presents the f
tion through
C Linux
following top
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x with E
pics:
ility Jobs ......
dix C: Linux wit
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MC VPL
....................
th EMC VPLEX
aim Using EMTechnic
LEX and V
...................
X and VNX
3MC VPLEX cal Notes
VNX
......... 32
31
A
32 TT
W
Appendix C: L
Thin LUN SpaTechnical No
Space Re
How Data MoWorks
Linux with EMC
ace Reclaim otes
eclamatio
VPLdevwritis ru
In timmin t
NoteIt ca
Priostorand
Fig
Thepro
obility
C VPLEX and V
Using EMC V
on throug
LEX Data Mobvice that is batten to a thinunning on a d
his example,mediately mahe storage a
e: This exampan also be use
or to beginninrage to the V
d approximat
gure 15 - Su
e file is then dcedure.
NX
VPLEX
gh VPLEX
bility, along wacked by a st disk. The en
datastore on
, a large file wakes the spacrray.
le is used to ded from thick-t
ng, make notVPLEX Virtual tely 14.7GB o
uSE_OS_LUN_0
deleted and t
X Mobilit
with VPLEX’s torage array tnvironment in a VPLEX Virt
was deleted ce available,
demonstrate thto-thin to conv
te of the cons Volume. A 4
of capacity ha
0 Consumed
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ty Jobs
thin-awaren that does non this examptual Volume
in the guest but the spac
hin-to-thin mivert a thickly p
sumed space.5GB file hasas been cons
Capacity
m is zeroed p
ess can be leot automaticaple is a Linux backed by an
VM. The opece is not retu
gration in ordprovisioned de
e on the VNXs been copiesumed.
per the Gene
everaged to rally duplicate virtual machn EMC VNX th
erating systemurned to the t
er to re-thin a evice to a thin
X LUN that prod to the files
ric UNIX / Lin
re-thin a e zeroes hine that hin LUN.
m thin pool
device. device.
ovides ystem
nux dd
V
VPLEX Data Mobility
Fig
Afteexp
Fig
VPLVPLthe
In t“Th
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UndMob
gure 16 - De
er zeroing, nopected becau
gure 17 - Su
LEX Data MobLEX’s thin-aw space on the
his example,in Rebuild” a
gure 18 – Se
der the Data bility job.
eleting a fi
o change in Cuse the VNX w
uSE_OS_LUN_0
bility to a newwareness will
e LUN.
, a thin-to-thi attribute bein
etting the T
Mobility tab,
ile and zer
Consumed Cawill not autom
0 Consumed
w thin device not write the
in VPLEX datang set during
Thin Rebuil
, select Move
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roing the fi
apacity is obmatically ded
Capacity un
e will facilitate zeroes to th
a mobility jog the claiming
ld Attribute
e Data within
dix C: Linux wit
Space Recla
ilesystem
bserved on thduplicate zer
nchanged
te reclaiminghe target dev
b will be comg process.
e
n Cluster to se
th EMC VPLEX
aim Using EMTechnic
he VNX LUN. Troes.
g the zeroed svice thereby f
mpleted due
et up the Dat
X and VNX
3MC VPLEX cal Notes
This is
space. freeing
to the
ta
33
A
34 TT
Appendix C: L
Thin LUN SpaTechnical No
Linux with EMC
ace Reclaim otes
Fig
The
Fig
AfteVolSuS
Fig
Thean u
C VPLEX and V
Using EMC V
gure 19 - VP
en click on th
gure 20 - Cr
er selecting tume that is b
SE_OS_vol Vi
gure 21 - Se
en select the unused Devic
NX
VPLEX
PLEX Data Mo
e Create Dat
reate Device
he local clusbeing used birtual Volume
elect Virtua
backing Devce that is bac
obility
a Mobility Jo
e Mobility
ster to create y the operatie.
al Volume
ice and creatcked by a ne
bs button.
Job
the Data Moing system fi
te the Sourcew thin LUN o
obility on, sellesystem. In
e-Target mapon the array.
lect the Virtu this case, it’
pping by iden
ual ’s the
ntifying
Fig
Statranconapp
Fig
At tThisuse
VPLseasyst
gure 22 - Cr
rt the Data Mnsferred to thnsumed by thproximately 1
gure 23 - Su
his point, thes will return a
e.
LEX Data Mobamless methotem.
reate Source
Mobility job ahe new LUN, he 4.5GB file 10.2GB.
uSE_OS_LUN_1
e original LU all of its cons
bility in coordod for re-thin
e / Target
nd commit it named SuSE has been rec
1 Consumed
N can be remsumed space
dination withning a LUN a
Append
Thin LUN
Mobility ma
t upon compE_OS_LUN_1claimed and
Capacity
moved from Ve to the thin p
h operating syafter freeing s
dix C: Linux wit
Space Recla
apping
letion. The d. The space t the new LUN
VPLEX and de pool to be av
ystem based space on the
th EMC VPLEX
aim Using EMTechnic
ata has been that was prevN is only cons
eleted from thvailable for fu
d utilities offee host operat
X and VNX
3MC VPLEX cal Notes
n viously suming
he array. uture
ers a ing
35