S C A L I N G 	   S T O R A G E 	   W I T H 	   C E P H                 Ross	  Turk,	  Inktank	  
WHO?Ross TurkVP Community, Inktank§  ross@inktank.com§  @rossturkinktank.com | ceph.com
me
APP                    APP                  HOST/VM                   CLIENT                       RADOSGW                ...
I N 	   T H E 	   B E G I N N I N GMagic Madzik, Flickr / CC BY 2.0
E A R L Y 	   I N F O R M A T I O N 	   S T O R A G EChico.Ferreira, Flickr / CC BY 2.0
W R I T I N G 	   > 	   C A V E 	   P A I N T I N G Skevingessner, Flickr / CC BY-SA 2.0
==x1000        x1
P E O P L E 	   B E G I N 	   W R I T I N G 	   A 	   L O TMoyan_Brenn, Flickr / CC BY-ND 2.0
W R I T I N G 	   I S 	   T I M E -­‐ C O N S U M I N Gtrekkyandy, Flickr / CC BY 2.0
T H E 	   I N D U S T R I A L I Z A T I O N 	   O F 	   W R I T I N GFateDenied, Flickr / CC BY 2.0
magnet       +   tape   =    magnetic tape                   ==         x1000              x1
S T O R A G E 	   B E C O M E S 	   M E C H A N I C A LErik Pitti, Wikipedia / CC BY-ND 2.0
HUMAN    ROCK          INKHUMAN         PAPERHUMAN   COMPUTER   TAPE
C O M P U T E R S 	   N E E D 	   P E O P L E 	   T O 	   W O R KUSDAgov, Flickr / CC BY 2.0
HUMAN   COMPUTER   TAPE
11101011 10110110     10110101 10101001     00100100 01001001==   10100100 10100101     01011010 01101010     10101010 101...
T H R O U G H P U T 	   B E C O M E S 	   I M P O R T A N TZane Luke, Flickr / CC BY-ND 2.0
L A Z 0 R 	   B 3 A M S 	   C H A N G E 	   E V E R Y T H I N G ! !Jeff Kubina, Flickr / CC-BY-SA 2.0
H A R D 	   D R I V E S 	   A R E 	   T O T A L L Y 	   B E T T E R                      amazing spinny hard drives       ...
E V E R Y T H I N G 	   G E T S 	   M E S S YRob!, Flickr / CC BY 2.0
aa      ab               111010               ac101   ba    bb                        bc    111   010da    110   db   011 ...
file                                      owner: rturk                                  created: aug12                    ...
aa      ab              111010               ac101   ba    bb                       bc    111   010da    110   db   01    ...
W E 	   O U T G R O W 	   T H E 	   H A R D 	   D R I V EMr. T in DC, Flickr / CC BY 2.0
DISK                  DISKHUMAN                  DISK        COMPUTE   DISKHUMAN           R                  DISKHUMAN   ...
HUMAN          HUMAN                          HUMAN HUMAN                                                         DISK    ...
COMPUTE                  DISK           R        COMPUTE                  DISK           R        COMPUTE                 ...
X                        aa      ab               111010               ac101   ba    bb                        bc    111  ...
object                                    pace: quick                                     driver: frog                    ...
COMPUTE                DISK         R      COMPUTE                DISK         R      COMPUTE                DISK         ...
COMPUTE                           DISK                    R                 COMPUTE                           DISK        ...
COMPUTE               DISK        R     COMPUTE               DISK        R     COMPUTE               DISK        R     CO...
Ceph                                                                                                          Cloud comput...
COMPUTE                  DISK           R        COMPUTE                  DISK           R        COMPUTE                 ...
COMPUTE          DISK   RCOMPUTE          DISK   RCOMPUTE          DISK   RCOMPUTE          DISK   RCOMPUTE          DISK ...
C DC DC DC DC DC DC DC DC DC DC DC D
C D        C D        C DHUMAN        C D        C D        C DHUMAN   C D        C D        C DHUMAN   C D        C D    ...
S T O R A G E 	   A P P L I A N C E SMichael Moll, Wikipedia / CC BY-SA 2.0
6 . 4 	   M I L L I O N 	   S Q F T 	   O F 	   F A C T O R I E SDude94111, Flickr / CC BY 2.0
T E C H N O L O G Y 	   I S 	   A 	   C O M M O D I T YRaeAllen, Flickr / CC-BY 2.0
C O M M O D I T Y 	   P R I C E S 	   F L U C T U A T EMay-07           May-08          May-09          May-10         May...
Hardware Appliances are Mysterious Black BoxesAbode of Chaos, Flickr / CC BY 2.0
C   D                   C   D                   C   D                   C   D                   C   D HUMAN        !!   C ...
C   D      C   D C    C   D      C   D          D      C   D      C   DC++   C   D      C   D      C   D      C   D      C...
X      C   D      C   D C    C   D      C   D          D      C   D      C   DC++   C   D      C   D      C   D      C   D...
THE WORLD     NEEDSAN OPEN STORAGE  TECHNOLOGY      THAT     SCALES
S A G E 	   W E I L§  Co-founder of DreamHost§  Inventor of Ceph§  CEO of Inktank
philosophy   design OPENSOURCE
O P E N 	   S O U R C E 	   S P R E A D S 	   I D E A Sorchidgalore, Flickr / CC BY 2.0
philosophy   design     OPEN    SOURCECOMMUNITY- FOCUSED
W E 	   A R E 	   S M A R T E R 	   T O G E T H E Rrturk, Linkedin Inmap
C E P H 	   B E L O N G S 	   T O 	   A L L 	   O F 	   U Swackybadger, Flickr / CC BY 2.0
philosophy   design     OPEN         SCALABL    SOURCE           ECOMMUNITY- FOCUSED
Ceph                                                                             Too much for a room                      ...
philosophy   design     OPEN         SCALABL    SOURCE           ECOMMUNITY-          NO SINGLE POINT OF FOCUSED          ...
A R I L O M A X 	   C A L I F O R N I C U Saroid, Flickr / CC BY 2.0
single point                                                of failure                                             highly-...
T H E 	   B E E H I V E 	   ( A N O T H E R 	   M E T A P H O R )blumenbiene, Flickr / CC BY 2.0
philosophy   design     OPEN         SCALABL    SOURCE           ECOMMUNITY-          NO SINGLE POINT OF FOCUSED          ...
C   D      C   D C    C   D      C   D          D      C   D      C   DC++   C   D      C   D      C   D      C   D      C...
C   D      C   D✔ C    C   D      C   D          D      C   D      C   DC++   C   D      C   D      C   D      C   D      ...
philosophy   design     OPEN         SCALABL    SOURCE            ECOMMUNITY-           NO SINGLE POINT OF FOCUSED        ...
D I S K S 	   = 	   J U S T 	   T I N Y 	   R E C O R D 	   P L A Y E R Sjon_a_ross, Flickr / CC BY 2.0
D    D  D    D  D    D      =  D    Dx 1 MILLION                  55 times / day
I T 	   A L L 	   S T A R T E D 	   W I T H 	   A 	   D R E A M
+
APP                    APP                  HOST/VM                   CLIENT                       RADOSGW                ...
APP                    APP                  HOST/VM                   CLIENT                       RADOSGW                ...
OSD    OSD    OSD    OSD    OSD                                   btrfsFS      FS    FS     FS     FS                     ...
HUMAN        MM           M
Monitors:    §  Maintain cluster mapM   §  Provide consensus for        distributed decision-        making    §  Must ...
APP                    APP                  HOST/VM                   CLIENT                       RADOSGW                ...
APP    LIBRADOS               native    MM               M
LIBRADOSL    §  Provides direct access to        RADOS for applications    §  C, C++, Python, PHP,        Java    §  No...
APP                    APP                  HOST/VM                   CLIENT                       RADOSGW                ...
APP                APP                                RESTRADOSGW          RADOSGW  LIBRADOS           LIBRADOS           ...
RADOS Gateway:§  REST-based interface to    RADOS§  Supports buckets,    accounting§  Compatible with S3 and    Swift a...
APP                    APP                  HOST/VM                   CLIENT                       RADOSGW                ...
VMVIRTUALIZATION CONTAINER            LIBRBD          LIBRADOS        M   M                 M
CONTAINER            VM       CONTAINER   LIBRBD                        LIBRBD  LIBRADOS                      LIBRADOS    ...
HOST    KRBD (KERNEL MODULE)         LIBRADOS       MM                          M
RADOS Block Device:§  Storage of virtual disks in    RADOS§  Allows decoupling of VMs    and containers     §  Live mig...
APP                    APP                  HOST/VM                   CLIENT                       RADOSGW                ...
CLIENTmetadata           01   data                   10               M           M            M
Metadata Server§  Manages metadata for a    POSIX-compliant shared    filesystem     §  Directory hierarchy     §  File...
WHAT MAKES  CEPH UNIQUE?
H O W 	   D O 	   Y O U 	   F I N D 	   Y O U R 	   K E Y S ?azmeen, Flickr / CC BY 2.0
C D           C D           C D           C D           C D      ??APP        C D           C D           C D           C ...
C D           C D   A-G           C D           C D           C D   H-NAPP   F*   C D           C D           C D   O-T   ...
I 	   A L W A Y S 	   P U T 	   M Y 	   K E Y S 	   O N 	   T H E 	   H O O Kvitamindave, Flickr / CC BY 2.0
C D      C D      C D      C D      C DAPP   C D      C D      C D      C D      C D      C D      C D
D E A R 	   D I A R Y : 	   K E Y S 	   = 	   I N 	   T H E 	   K I T C H E NBarnaby, Flickr / CC BY 2.0
HOW DO YOU FIND YOUR KEYSWHEN YOUR HOUSE         IS  INFINITELY BIG       ANDALWAYS CHANGING?
T H E 	   A N S W E R : 	   C R U S H ! !pasukaru76, Flickr / CC SA 2.0
10 10 01 01 10 10 01 11 01 10                               hash(object name) % num pg10   10    01   01   10   10    01  ...
10 10 01 01 10 10 01 11 01 1010   10    01   01   10   10   01   11    01   10
CRUSH§  Pseudo-random placement    algorithm§  Ensures even distribution§  Repeatable, deterministic§  Rule-based conf...
CLIENT         ??
CLIENT         ??
VMVIRTUALIZATION CONTAINER            LIBRBD          LIBRADOS        M   M                 M
HOW DO YOU      SPIN UPTHOUSANDS OF VMs    INSTANTLY       AND  EFFICIENTLY?
instant copy144   0       0      0   0   = 144
write                          CLIENT                  write                  write                  write144   4   = 148
read                  read                         CLIENT                  read144   4   = 148
HOW DO YOU       MANAGEDIRECTORY HEIRARCHY      WITHOUT          A   SINGLE POINT OF      FAILURE?
F I L E S Y S T E M S 	   R E Q U I R E 	   M E T A D A T ABarnaby, Flickr / CC BY 2.0
CLIENT        01        10    MM            M
MM       M
one treethree metadata servers                              ??
DYNAMIC SUBTREE PARTITIONING
AND NOWBACKPEDALING
ALMOSTEVERYTHING  WORKS
APP                    APP                  HOST/VM                   CLIENT                       RADOSGW                ...
*LAN SCALE!!* OR REALLY REALLY SCARY FAST WAN
C E P H 	   A N D 	   C L O U D S T A C Ktableatny, Flickr / CC BY 2.0
R B D 	   S U P P O R T 	   I N 	   C L O U D S T A C K§  Allows storage of virtual disks inside RADOS    §  Works with ...
QUESTIONS?Ross TurkVP Community, Inktank§  ross@inktank.com§  @rossturkinktank.com | ceph.com
2012 Virtual Cloud Day
2012 Virtual Cloud Day
2012 Virtual Cloud Day
2012 Virtual Cloud Day
2012 Virtual Cloud Day
2012 Virtual Cloud Day
2012 Virtual Cloud Day
2012 Virtual Cloud Day
2012 Virtual Cloud Day
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2012 Virtual Cloud Day

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Our VP, Community Ross Turk's slides from his Virtual Cloud Day talk in Nov 2012.

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2012 Virtual Cloud Day

  1. 1. S C A L I N G   S T O R A G E   W I T H   C E P H Ross  Turk,  Inktank  
  2. 2. WHO?Ross TurkVP Community, Inktank§  ross@inktank.com§  @rossturkinktank.com | ceph.com
  3. 3. me
  4. 4. APP APP HOST/VM CLIENT RADOSGW RBD CEPH FS LIBRADOS A bucket-based REST A reliable and fully- A POSIX-compliant A library allowing gateway, compatible distributed block distributed file apps to directly with S3 and Swift device, with a Linux system, with a Linux access RADOS, kernel client and a kernel client and with support for QEMU/KVM driver support for FUSE C, C++, Java, Python, Ruby, and PHPRADOSA reliable, autonomous, distributed object store comprised of self-healing, self-managing,intelligent storage nodes
  5. 5. I N   T H E   B E G I N N I N GMagic Madzik, Flickr / CC BY 2.0
  6. 6. E A R L Y   I N F O R M A T I O N   S T O R A G EChico.Ferreira, Flickr / CC BY 2.0
  7. 7. W R I T I N G   >   C A V E   P A I N T I N G Skevingessner, Flickr / CC BY-SA 2.0
  8. 8. ==x1000 x1
  9. 9. P E O P L E   B E G I N   W R I T I N G   A   L O TMoyan_Brenn, Flickr / CC BY-ND 2.0
  10. 10. W R I T I N G   I S   T I M E -­‐ C O N S U M I N Gtrekkyandy, Flickr / CC BY 2.0
  11. 11. T H E   I N D U S T R I A L I Z A T I O N   O F   W R I T I N GFateDenied, Flickr / CC BY 2.0
  12. 12. magnet + tape = magnetic tape == x1000 x1
  13. 13. S T O R A G E   B E C O M E S   M E C H A N I C A LErik Pitti, Wikipedia / CC BY-ND 2.0
  14. 14. HUMAN ROCK INKHUMAN PAPERHUMAN COMPUTER TAPE
  15. 15. C O M P U T E R S   N E E D   P E O P L E   T O   W O R KUSDAgov, Flickr / CC BY 2.0
  16. 16. HUMAN COMPUTER TAPE
  17. 17. 11101011 10110110 10110101 10101001 00100100 01001001== 10100100 10100101 01011010 01101010 10101010 10101010 01010110 01010011
  18. 18. T H R O U G H P U T   B E C O M E S   I M P O R T A N TZane Luke, Flickr / CC BY-ND 2.0
  19. 19. L A Z 0 R   B 3 A M S   C H A N G E   E V E R Y T H I N G ! !Jeff Kubina, Flickr / CC-BY-SA 2.0
  20. 20. H A R D   D R I V E S   A R E   T O T A L L Y   B E T T E R amazing spinny hard drives sucky stupid tape slow
  21. 21. E V E R Y T H I N G   G E T S   M E S S YRob!, Flickr / CC BY 2.0
  22. 22. aa ab 111010 ac101 ba bb bc 111 010da 110 db 011 010 000 dc000 110 001
  23. 23. file owner: rturk created: aug12 last viewed: aug17 size: 4202511101011 10110110 10110101 perms: 64410101001 00100100 0100100110100100 10100101 0101101001101010 10101010 10101010
  24. 24. aa ab 111010 ac101 ba bb bc 111 010da 110 db 01 010 000 dc 10000 110 001
  25. 25. W E   O U T G R O W   T H E   H A R D   D R I V EMr. T in DC, Flickr / CC BY 2.0
  26. 26. DISK DISKHUMAN DISK COMPUTE DISKHUMAN R DISKHUMAN DISK DISK
  27. 27. HUMAN HUMAN HUMAN HUMAN DISK HUMANHUMAN DISK HUMAN HUMAN DISK DISK HUMAN DISK HUMANHUMAN DISK (COMPUTER) HUMAN DISK HUMAN HUMAN DISK HUMAN HUMAN DISK HUMAN DISK HUMAN DISK HUMAN HUMAN DISK HUMAN HUMAN (actually more like this…)
  28. 28. COMPUTE DISK R COMPUTE DISK R COMPUTE DISKHUMAN R COMPUTE DISK R COMPUTE DISK R COMPUTE DISKHUMAN R COMPUTE DISK R COMPUTE DISK R COMPUTE DISKHUMAN R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R
  29. 29. X aa ab 111010 ac101 ba bb bc 111 010da 110 db 011 010 000 dc000 110 001
  30. 30. object pace: quick driver: frog license: expired expression: agog11101011 10110110 1011010110101001 00100100 0100100110100100 10100101 0101101001101010 10101010 10101010
  31. 31. COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISKAPP R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R
  32. 32. COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTECOMPUTE R DISK COMPUTE R R DISK DISK COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R
  33. 33. COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK RVM COMPUTE DISK R COMPUTE DISK RVM COMPUTE DISK R COMPUTE DISKVM R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R
  34. 34. Ceph Cloud computing Distributed storage Shared storage Computers Writing PaintingS T O R A G E   T H R O U G H O U T   H I S T O R YTime-scale: Roughly logarithmic. Content: Whatever the opposite of “scientific” is.
  35. 35. COMPUTE DISK R COMPUTE DISK R COMPUTE DISKHUMAN R COMPUTE DISK R COMPUTE DISK R COMPUTE DISKHUMAN R COMPUTE DISK R COMPUTE DISK R COMPUTE DISKHUMAN R COMPUTE DISK R COMPUTE DISK R COMPUTE DISK R
  36. 36. COMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK RCOMPUTE DISK R
  37. 37. C DC DC DC DC DC DC DC DC DC DC DC D
  38. 38. C D C D C DHUMAN C D C D C DHUMAN C D C D C DHUMAN C D C D C D
  39. 39. S T O R A G E   A P P L I A N C E SMichael Moll, Wikipedia / CC BY-SA 2.0
  40. 40. 6 . 4   M I L L I O N   S Q F T   O F   F A C T O R I E SDude94111, Flickr / CC BY 2.0
  41. 41. T E C H N O L O G Y   I S   A   C O M M O D I T YRaeAllen, Flickr / CC-BY 2.0
  42. 42. C O M M O D I T Y   P R I C E S   F L U C T U A T EMay-07 May-08 May-09 May-10 May-11 May-12
  43. 43. Hardware Appliances are Mysterious Black BoxesAbode of Chaos, Flickr / CC BY 2.0
  44. 44. C D C D C D C D C D HUMAN !! C D[DEVELOPER] C D C D C D C D C D C D
  45. 45. C D C D C C D C D D C D C DC++ C D C D C D C D C D
  46. 46. X C D C D C C D C D D C D C DC++ C D C D C D C D C D
  47. 47. THE WORLD NEEDSAN OPEN STORAGE TECHNOLOGY THAT SCALES
  48. 48. S A G E   W E I L§  Co-founder of DreamHost§  Inventor of Ceph§  CEO of Inktank
  49. 49. philosophy design OPENSOURCE
  50. 50. O P E N   S O U R C E   S P R E A D S   I D E A Sorchidgalore, Flickr / CC BY 2.0
  51. 51. philosophy design OPEN SOURCECOMMUNITY- FOCUSED
  52. 52. W E   A R E   S M A R T E R   T O G E T H E Rrturk, Linkedin Inmap
  53. 53. C E P H   B E L O N G S   T O   A L L   O F   U Swackybadger, Flickr / CC BY 2.0
  54. 54. philosophy design OPEN SCALABL SOURCE ECOMMUNITY- FOCUSED
  55. 55. Ceph Too much for a room Too much for a computer Too much for a drive Too much for a book Too much for a caveC E P H   I S   B U I L T   T O   S C A L E
  56. 56. philosophy design OPEN SCALABL SOURCE ECOMMUNITY- NO SINGLE POINT OF FOCUSED FAILURE
  57. 57. A R I L O M A X   C A L I F O R N I C U Saroid, Flickr / CC BY 2.0
  58. 58. single point of failure highly-availablereplicatedT H E   O C T O P U S   ( A   M E T A P H O R )I love speaking in metaphors.
  59. 59. T H E   B E E H I V E   ( A N O T H E R   M E T A P H O R )blumenbiene, Flickr / CC BY 2.0
  60. 60. philosophy design OPEN SCALABL SOURCE ECOMMUNITY- NO SINGLE POINT OF FOCUSED FAILURE SOFTWARE BASED
  61. 61. C D C D C C D C D D C D C DC++ C D C D C D C D C D
  62. 62. C D C D✔ C C D C D D C D C DC++ C D C D C D C D C D
  63. 63. philosophy design OPEN SCALABL SOURCE ECOMMUNITY- NO SINGLE POINT OF FOCUSED FAILURE SOFTWARE BASED SELF- MANAGING
  64. 64. D I S K S   =   J U S T   T I N Y   R E C O R D   P L A Y E R Sjon_a_ross, Flickr / CC BY 2.0
  65. 65. D D D D D D = D Dx 1 MILLION 55 times / day
  66. 66. I T   A L L   S T A R T E D   W I T H   A   D R E A M
  67. 67. +
  68. 68. APP APP HOST/VM CLIENT RADOSGW RBD CEPH FS LIBRADOS A bucket-based REST A reliable and fully- A POSIX-compliant A library allowing gateway, compatible distributed block distributed file apps to directly with S3 and Swift device, with a Linux system, with a Linux access RADOS, kernel client and a kernel client and with support for QEMU/KVM driver support for FUSE C, C++, Java, Python, Ruby, and PHPRADOSA reliable, autonomous, distributed object store comprised of self-healing, self-managing,intelligent storage nodes
  69. 69. APP APP HOST/VM CLIENT RADOSGW RBD CEPH FS LIBRADOS A bucket-based REST A reliable and fully- A POSIX-compliant A library allowing gateway, compatible distributed block distributed file apps to directly with S3 and Swift device, with a Linux system, with a Linux access RADOS, kernel client and a kernel client and with support for QEMU/KVM driver support for FUSE C, C++, Java, Python, Ruby, and PHPRADOSA reliable, autonomous, distributed object store comprised of self-healing, self-managing,intelligent storage nodes
  70. 70. OSD OSD OSD OSD OSD btrfsFS FS FS FS FS xfs ext4DISK DISK DISK DISK DISK M M M
  71. 71. HUMAN MM M
  72. 72. Monitors: §  Maintain cluster mapM §  Provide consensus for distributed decision- making §  Must have an odd number §  These do not serve stored objects to clients OSDs: §  One per disk (recommended) §  At least three in a cluster §  Serve stored objects to clients §  Intelligently peer to perform replication tasks §  Supports object classes
  73. 73. APP APP HOST/VM CLIENT RADOSGW RBD CEPH FS LIBRADOS A bucket-based REST A reliable and fully- A POSIX-compliant A library allowing gateway, compatible distributed block distributed file apps to directly with S3 and Swift device, with a Linux system, with a Linux access RADOS, kernel client and a kernel client and with support for QEMU/KVM driver support for FUSE C, C++, Java, Python, Ruby, and PHPRADOSA reliable, autonomous, distributed object store comprised of self-healing, self-managing,intelligent storage nodes
  74. 74. APP LIBRADOS native MM M
  75. 75. LIBRADOSL §  Provides direct access to RADOS for applications §  C, C++, Python, PHP, Java §  No HTTP overhead
  76. 76. APP APP HOST/VM CLIENT RADOSGW RBD CEPH FS LIBRADOS A bucket-based REST A reliable and fully- A POSIX-compliant A library allowing gateway, compatible distributed block distributed file apps to directly with S3 and Swift device, with a Linux system, with a Linux access RADOS, kernel client and a kernel client and with support for QEMU/KVM driver support for FUSE C, C++, Java, Python, Ruby, and PHPRADOSA reliable, autonomous, distributed object store comprised of self-healing, self-managing,intelligent storage nodes
  77. 77. APP APP RESTRADOSGW RADOSGW LIBRADOS LIBRADOS native M M M
  78. 78. RADOS Gateway:§  REST-based interface to RADOS§  Supports buckets, accounting§  Compatible with S3 and Swift applications
  79. 79. APP APP HOST/VM CLIENT RADOSGW RBD CEPH FS LIBRADOS A bucket-based REST A reliable and fully- A POSIX-compliant A library allowing gateway, compatible distributed block distributed file apps to directly with S3 and Swift device, with a Linux system, with a Linux access RADOS, kernel client and a kernel client and with support for QEMU/KVM driver support for FUSE C, C++, Java, Python, Ruby, and PHPRADOSA reliable, autonomous, distributed object store comprised of self-healing, self-managing,intelligent storage nodes
  80. 80. VMVIRTUALIZATION CONTAINER LIBRBD LIBRADOS M M M
  81. 81. CONTAINER VM CONTAINER LIBRBD LIBRBD LIBRADOS LIBRADOS M M M
  82. 82. HOST KRBD (KERNEL MODULE) LIBRADOS MM M
  83. 83. RADOS Block Device:§  Storage of virtual disks in RADOS§  Allows decoupling of VMs and containers §  Live migration!§  Images are striped across the cluster§  Boot support in QEMU, KVM, and OpenStack Nova§  Mount support in the Linux kernel
  84. 84. APP APP HOST/VM CLIENT RADOSGW RBD CEPH FS LIBRADOS A bucket-based REST A reliable and fully- A POSIX-compliant A library allowing gateway, compatible distributed block distributed file apps to directly with S3 and Swift device, with a Linux system, with a Linux access RADOS, kernel client and a kernel client and with support for QEMU/KVM driver support for FUSE C, C++, Java, Python, Ruby, and PHPRADOSA reliable, autonomous, distributed object store comprised of self-healing, self-managing,intelligent storage nodes
  85. 85. CLIENTmetadata 01 data 10 M M M
  86. 86. Metadata Server§  Manages metadata for a POSIX-compliant shared filesystem §  Directory hierarchy §  File metadata (owner, timestamps, mode, etc.)§  Stores metadata in RADOS§  Does not serve file data to clients§  Only required for shared filesystem
  87. 87. WHAT MAKES CEPH UNIQUE?
  88. 88. H O W   D O   Y O U   F I N D   Y O U R   K E Y S ?azmeen, Flickr / CC BY 2.0
  89. 89. C D C D C D C D C D ??APP C D C D C D C D C D C D C D
  90. 90. C D C D A-G C D C D C D H-NAPP F* C D C D C D O-T C D C D C D U-Z C D
  91. 91. I   A L W A Y S   P U T   M Y   K E Y S   O N   T H E   H O O Kvitamindave, Flickr / CC BY 2.0
  92. 92. C D C D C D C D C DAPP C D C D C D C D C D C D C D
  93. 93. D E A R   D I A R Y :   K E Y S   =   I N   T H E   K I T C H E NBarnaby, Flickr / CC BY 2.0
  94. 94. HOW DO YOU FIND YOUR KEYSWHEN YOUR HOUSE IS INFINITELY BIG ANDALWAYS CHANGING?
  95. 95. T H E   A N S W E R :   C R U S H ! !pasukaru76, Flickr / CC SA 2.0
  96. 96. 10 10 01 01 10 10 01 11 01 10 hash(object name) % num pg10 10 01 01 10 10 01 11 01 10 CRUSH(pg, cluster state, rule set)
  97. 97. 10 10 01 01 10 10 01 11 01 1010 10 01 01 10 10 01 11 01 10
  98. 98. CRUSH§  Pseudo-random placement algorithm§  Ensures even distribution§  Repeatable, deterministic§  Rule-based configuration §  Replica count §  Infrastructure topology §  Weighting
  99. 99. CLIENT ??
  100. 100. CLIENT ??
  101. 101. VMVIRTUALIZATION CONTAINER LIBRBD LIBRADOS M M M
  102. 102. HOW DO YOU SPIN UPTHOUSANDS OF VMs INSTANTLY AND EFFICIENTLY?
  103. 103. instant copy144 0 0 0 0 = 144
  104. 104. write CLIENT write write write144 4 = 148
  105. 105. read read CLIENT read144 4 = 148
  106. 106. HOW DO YOU MANAGEDIRECTORY HEIRARCHY WITHOUT A SINGLE POINT OF FAILURE?
  107. 107. F I L E S Y S T E M S   R E Q U I R E   M E T A D A T ABarnaby, Flickr / CC BY 2.0
  108. 108. CLIENT 01 10 MM M
  109. 109. MM M
  110. 110. one treethree metadata servers ??
  111. 111. DYNAMIC SUBTREE PARTITIONING
  112. 112. AND NOWBACKPEDALING
  113. 113. ALMOSTEVERYTHING WORKS
  114. 114. APP APP HOST/VM CLIENT RADOSGW RBD CEPH FS LIBRADOS A bucket-based REST A reliable and fully- A POSIX-compliant A library allowing gateway, compatible distributed block distributed file apps to directly with S3 and Swift device, with a Linux system, with a Linux access RADOS, kernel client and a kernel client and with support for QEMU/KVM driver support for FUSE C, C++, Java, Python, Ruby, and PHP AWESOME AWESOME NEARLY AWESOME AWESOMERADOS AWESOMEA reliable, autonomous, distributed object store comprised of self-healing, self-managing,intelligent storage nodes
  115. 115. *LAN SCALE!!* OR REALLY REALLY SCARY FAST WAN
  116. 116. C E P H   A N D   C L O U D S T A C Ktableatny, Flickr / CC BY 2.0
  117. 117. R B D   S U P P O R T   I N   C L O U D S T A C K§  Allows storage of virtual disks inside RADOS §  Works with KVM only right now §  No snapshots yet§  Upcoming in CloudStack 4§  More information can be found on the mailing list: §  ceph-devel / incubator-cloudstack-dev: http://article.gmane.org/gmane.comp.file-systems.ceph.devel/7505
  118. 118. QUESTIONS?Ross TurkVP Community, Inktank§  ross@inktank.com§  @rossturkinktank.com | ceph.com
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