俺がSCSIだ

iSCSIをマウントする手順、iSCSIターゲットを提供する手順、iSCSI非対応機器でiSCSIをマウントする方法について解説します

Transcript

1. Զ͕SCSIͩ
   LIOͷ͢͢Ί
   Naomasa Matsubayashi
   

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2. SCSI
   

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3. ίϯϐϡʔλͱपลػثΛ઀ଓ͢ΔͨΊͷن֨
   ओʹೋ࣍هԱ૷ஔͷ઀ଓͰ༻͍ΒΕΔ
   SCSI
   ΠχγΤʔλ λʔήοτ
   

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4. iSCSI
   

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5. TCP/IPʹSCSIϓϩτίϧΛ৐ͤͯ
   ԕ͘཭Εͨॴʹ͋ΔλʔήοτΛૢ࡞͢Δ
   iSCSI
   ΠχγΤʔλ λʔήοτ
   

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6. iSCSI
   RFCͰඪ४Խ͞Ε͍ͯΔ
   3'$ J4$4*ͷجຊతͳن֨
   3'$ ໨తͷλʔήοτΛݟ͚ͭΔํ๏
   3'$ ΠχγΤʔλ΍λʔήοτͷ໊લͷॻ͖ํ
   3'$ ೝূʹ͍ͭͯ
   3'$ J4$4*ରԠػث͕ຬͨ͢΂͖ཁ݅ʹ͍ͭͯ
   3'$ J4$4*ͷίϚϯυͷ࣮ߦॱংʹ͍ͭͯͷ஫ҙࣄ߲
   3'$ ຊՈͷ4$4*ͷ࢓༷͕ߋ৽͞Ε͔ͨΒ௥ै͢Δͥ
   3'$ 4-1WͰJ4$4*୳ͤΔΑ͏ʹ͢Δ֦ு
   ଞଟ਺
   

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7. Open-iSCSI
   IUUQXXXPQFOJTDTJPSH
   Linux؀ڥͰiSCSIλʔήοτΛϚ΢ϯτ͠Α͏
   

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8. iSCSI Transport Attributesͱ
   iSCSI Initiator over TCP/IPΛ༗ޮʹ͢Δ
   LinuxΧʔωϧͷ
   Linux؀ڥͰiSCSIλʔήοτΛϚ΢ϯτ͠Α͏
   

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9. Linux؀ڥͰiSCSIλʔήοτΛϚ΢ϯτ͠Α͏
   $ iscsid
   Open-iSCSIͷσʔϞϯΛىಈ
   $ iscsiadm -m discovery -t st -p 192.168.152.1 -P 1!
   Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.406262d1b87f!
   !Portal: 192.168.152.1:3260,1!
   !!Iface Name: iface0!
   Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.f3d75f94ab5f!
   !Portal: 192.168.152.1:3260,1!
   !!Iface Name: iface0
   ϙʔλϧʹ઀ଓͯ͠λʔήοτΛ୳͢
   iSCSIϙʔλϧͷϗετ
   iSCSIλʔήοτͷ໊લ
   

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10. $ iscsiadm -m node --targetname \!
    iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.f3d75f94ab5f --login!
    Logging in to [iface: iface0, target: iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.f3d75f94ab5f, portal: 192.168.152.1,3260]!
    Login to [iface: iface0, target: iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.f3d75f94ab5f, portal: 192.168.152.1,3260]
    successful.
    iSCSIλʔήοτʹϩάΠϯ
    iSCSIλʔήοτͷ໊લ
    Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.406262d1b87f!
    !Portal: 192.168.152.1:3260,1!
    !!Iface Name: iface0!
    Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.f3d75f94ab5f!
    !Portal: 192.168.152.1:3260,1!
    !!Iface Name: iface0
    ϙʔλϧʹ઀ଓͯ͠λʔήοτΛ୳͢
    

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11. iscsi.hahnela.x8664:sn.f3d75f94ab5f, portal: 192.168.152.1,3260]
    successful.
    iSCSIλʔήοτʹϩάΠϯ
    [776839.671781] scsi host10: iSCSI Initiator over TCP/IP!
    [776839.932116] scsi 10:0:0:0: Direct-Access LIO-ORG IBLOCK
    4.0 PQ: 0 ANSI: 5!
    [776839.933116] sd 10:0:0:0: Attached scsi generic sg2 type 0!
    [776839.933865] sd 10:0:0:0: [sdc] 41943040 512-byte logical
    blocks: (21.4 GB/20.0 GiB)!
    [776839.933872] sd 10:0:0:0: [sdc] 4096-byte physical blocks!
    [776839.936005] sd 10:0:0:0: [sdc] Write Protect is off!
    [776839.936012] sd 10:0:0:0: [sdc] Mode Sense: 43 00 10 08!
    [776839.936422] sd 10:0:0:0: [sdc] Write cache: enabled, read
    cache: enabled, supports DPO and FUA!
    [776839.962054] sdc: unknown partition table!
    [776839.965261] sd 10:0:0:0: [sdc] Attached SCSI disk
    ৽͍͠SCSIσΟεΫ͕ݱΕͨ
    

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12. $ mount -t auto /dev/sdc /mnt/iscsi!
    $ mount|grep /mnt/iscsi!
    /dev/sdc on /mnt/iscsi type ext4 (rw)
    Linux؀ڥͰiSCSIλʔήοτΛϚ΢ϯτ͠Α͏
    ͋ͱ͸ϩʔΧϧͷσΟεΫͱಉ͡Α͏ʹ࢖͑Δ
    $ umount /dev/sdc!
    $ iscsiadm -m node --targetname \!
    iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.f3d75f94ab5f —logout!
    Logging out of session [sid: 7, target: iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.f3d75f94ab5f, portal: 192.168.152.1,3260]!
    Logout of [sid: 7, target: iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.f3d75f94ab5f, portal: 192.168.152.1,3260]
    successful.
    ཁΒͳ͘ͳͬͨΒumountͯ͠ϩάΞ΢τ
    iSCSIλʔήοτͷ໊લ
    

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13. Ϣʔβۭؒ
    Χʔωϧ
    NFSͱͷҧ͍
    NFS͸ϑΝΠϧγεςϜͷϨϕϧͰ
    ϑΝΠϧૢ࡞ΛTCP/IPʹ৐ͤΔ
    iSCSI͸ϒϩοΫσόΠεͷϨϕϧͰ
    ϒϩοΫͷಡΈॻ͖ΛTCP/IPʹ৐ͤΔ
    ϋʔυ΢ΣΞ
    ϒϩοΫσόΠε
    ϑΝΠϧγεςϜ
    ΞϓϦέʔγϣϯ
    7'4
    NE -7.
    

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14. NFSʹର͢ΔiSCSIͷར఺
    ϩʔΧϧͷϑΝΠϧγεςϜͰग़དྷΔૢ࡞͸શͯग़དྷΔ
    ΫϥΠΞϯτଆͰNE΍-7.ʹ௨͢͜ͱ͕Ͱ͖Δ
    4$4*ςʔϓ΍4$4*$%30.΋ωοτϫʔΫӽ͠ʹ࢖͑Δ
    ଎͍
    ޙड़
    
    

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15. NFSʹର͢ΔiSCSIͷܽ఺
    ηογϣϯ͕੾ΕΔͱϑΝΠϧγεςϜ͕ഁଛ͠΍͍͢
    ෳ਺ͷΫϥΠΞϯτ͔Β
    ಉ࣌ʹ৮Δʹ͸ಛघͳϑΝΠϧγεςϜ͕ඞཁ
    0QFOJ4$4*ͷ࣮૷͕ࡶ ޙड़
    
    

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16. ଎͍
    $ dd if=/dev/zero of=./hoge.img bs=1024 count=500K!
    512000+0 Ϩίʔυೖྗ!
    512000+0 Ϩίʔυग़ྗ!
    524288000 όΠτ (524 MB) ίϐʔ͞Ε·ͨ͠ɺ 9.79909 ඵɺ 53.5 MB/ඵ
    $ dd if=/dev/zero of=./hoge.img bs=1024 count=500K!
    512000+0 Ϩίʔυೖྗ!
    512000+0 Ϩίʔυग़ྗ!
    524288000 όΠτ (524 MB) ίϐʔ͞Ε·ͨ͠ɺ 2.49186 ඵɺ 210 MB/ඵ
    NFSv4(async)+btrfsͰγʔέϯγϟϧϥΠτ
    iSCSI+btrfsͰγʔέϯγϟϧϥΠτ
    53.5 MB/ඵ
    210 MB/ඵ
    

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17. ଎͍
    $ time tar xf linux-3.19.3.tar!
    !
    real! 4m3.048s!
    user! 0m0.835s!
    sys! 0m9.715s
    $ time tar xf linux-3.19.3.tar !
    !
    real 0m15.334s!
    user 0m0.454s!
    sys 0m3.097s
    NFSv4(async)+btrfsͰϑΝΠϧΛ୔ࢁ࡞੒
    iSCSI+btrfsͰϑΝΠϧΛ୔ࢁ࡞੒
    4෼3ඵ
    15ඵ
    

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18. Open-iSCSIͷ࣮૷͕ࡶ
    Open-iSCSI͸
    ͦͷ··Ͱ͸musl libcͰϏϧυͰ͖ͳ͍
    

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19. gcc -Wall -fno-strict-aliasing -I. -D_GNU_SOURCE -c -o server.o server.c!
    In file included from server.c:7:0:!
    isns.h:249:1: Τϥʔ: ෆ໌ͳܕ໊ ‘time_t’ Ͱ͢!
    extern time_t isns_object_last_modified(const isns_object_t *);!
    ^!
    isns.h:348:1: Τϥʔ: ෆ໌ͳܕ໊ ‘time_t’ Ͱ͢!
    extern time_t isns_db_expire(isns_db_t *);!
    ^!
    isns.h:377:1: Τϥʔ: ෆ໌ͳܕ໊ ‘time_t’ Ͱ͢!
    extern time_t isns_run_timers(void);!
    ^!
    isns.h:500:50: ܯࠂ: ԾҾ਺Ϧετ಺Ͱ ‘struct timeval’ ͕એݴ͞Ε͍ͯ·͢ [σϑΥϧτ
    Ͱ༗ޮ]!
    extern isns_message_t * isns_recv_message(struct timeval *timeout);!
    ^!
    isns.h:500:50: ܯࠂ: ͦͷείʔϓ͸͜ͷఆٛ·ͨ͸એݴͷΈͰ͢ɻ͜Ε͸ଟ෼ر๬ͨ͠΋ͷͰ͸
    ͳ͍Ͱ͠ΐ͏ [σϑΥϧτͰ༗ޮ]!
    isns.h:671:1: Τϥʔ: ෆ໌ͳܕ໊ ‘time_t’ Ͱ͢!
    extern time_t isns_scn_transmit_all(void);!
    HMJCDͰ͸ଞͷϔομ͔ΒJODMVEF͞Ε͍ͯΔϔομΛ
    ࣗ෼ͰJODMVEF͍ͯ͠ͳ͍
    

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20. cc -O2 -g -fPIC -Wall -Wstrict-prototypes -I../../include -I../../usr -
    D_GNU_SOURCE -c -o prom_lex.o prom_lex.c!
    cc -O2 -g -fPIC -Wall -Wstrict-prototypes -I../../include -I../../usr -
    D_GNU_SOURCE -c -o prom_parse.tab.o prom_parse.tab.c!
    cc -O2 -g -fPIC -Wall -Wstrict-prototypes -I../../include -I../../usr -
    D_GNU_SOURCE -c -o fwparam_ppc.o fwparam_ppc.c!
    fwparam_ppc.c: ؔ਺ ‘loop_devs’ ಺:!
    fwparam_ppc.c:359:45: Τϥʔ: ‘__compar_fn_t’ ͕એݴ͞Ε͍ͯ·ͤΜ (͜ͷؔ਺಺Ͱͷ࠷
    ॳͷ࢖༻)!
    qsort(niclist, nic_count, sizeof(char *), (__compar_fn_t)nic_cmp);!
    ^!
    fwparam_ppc.c:359:45: උߟ: ະએݴͷࣝผࢠ͸ग़ݱ֤ͨؔ͠਺಺ͰҰճͷΈใࠂ͞Ε·͢!
    fwparam_ppc.c:359:59: Τϥʔ: expected ‘)’ before ‘nic_cmp’!
    qsort(niclist, nic_count, sizeof(char *), (__compar_fn_t)nic_cmp);!
    ^!
    : recipe for target 'fwparam_ppc.o' failed!
    make[1]: *** [fwparam_ppc.o] Error 1!
    make[1]: Leaving directory '/usr/src/open-iscsi-2.0-873.orig/utils/
    fwparam_ibft'!
    Makefile:30: recipe for target 'user' failed!
    make: *** [user] Error 2
    ඇඪ४ͷܕΛԕྀͳ͘࢖͍ͬͯΔ
    

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21. $ iscsiadm -m discovery -t st -p 192.168.152.1 -P 1!
    iscsiadm: unrecognized character 'P'
    ͋ΒΏΔΦϓγϣϯ͕ະ஌ͷΦϓγϣϯѻ͍͞ΕΔ
    ͜ΕΒΛमਖ਼ͯ͠ग़དྷ্͕ͬͨόΠφϦΛ࣮ߦ͢Δͱ
    

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22. optopt = 0;!
    while ((ch = getopt_long(argc, argv, short_options,!
    long_options, &longindex)) >= 0) {!
    (ུ)!
    }!
    if (optopt) {!
    log_error("unrecognized character '%c'", optopt);!
    rc = ISCSI_ERR_INVAL;!
    goto free_ifaces;!
    }
    HMJCDͰ͸ͦͷΑ͏ʹಈ͕͘
    ಛʹن֨Ͱอূ͞Ε͍ͯΔΘ͚Ͱ͸ͳ͍ڍಈʹґଘ͍ͯ͠Δ
    getopt͕ࣦഊ࣌ʹҾ਺Λॻ͖ࠐΉάϩʔόϧม਺optoptʹ
    ੒ޭ࣌ʹ͸Կ΋ॻ͖ࠐ·Εͳ͍͜ͱΛظ଴͍ͯ͠Δ
    POSIX͸੒ޭ࣌ͷ஋ʹ͍ͭͯԿ΋نఆ͍ͯ͠ͳ͍
    
    

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23. ͜ΕΒͷमਖ਼Λύονʹͨ͠
    0QFOJ4$4*ϓϩδΣΫτʹ౤͛Δલʹ
    HJUͷ)&"%ʹ͜ͷύονΛ౰ͯͯΈͨ
    

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24. gcc -DHAVE_CONFIG_H -I. -I../../.. -I../../../src/uip -
    I../../../src/unix -I../../../src/unix/libs -I../../../src/apps/
    dhcpc -I../../../../include -I../../../../usr -g -O2 -O2 -Wall -
    MT bnx2x.o -MD -MP -MF .deps/bnx2x.Tpo -c -o bnx2x.o bnx2x.c!
    In file included from ../../../src/unix/nic.h:46:0,!
    from bnx2x.h:41,!
    from bnx2x.c:57:!
    /usr/include/netinet/if_ether.h:96:8: Τϥʔ: ‘struct ethhdr’ ͷ
    ࠶ఆٛͰ͢!
    struct ethhdr {!
    ^!
    In file included from /usr/include/linux/ethtool.h:17:0,!
    from bnx2x.c:45:!
    /usr/include/linux/if_ether.h:137:8: උߟ: ݩʑ͸͜͜Ͱఆٛ͞Ε·ͨ͠!
    struct ethhdr {!
    ^!
    Makefile:352: recipe for target 'bnx2x.o' failed!
    NVTMMJCDͰ0QFOJ4$4*Λ࢖͏ͷΛఘΊͨ
    

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25. ΠχγΤʔλ λʔήοτ
    ͬͪ͜͸ී௨ͷ-JOVY؀ڥͰྑ͍
    ͬͪ͜͸
    

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26. ͳΜͱ
    Linux͸SCSIλʔήοτʹͳΕΔ
    

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27. LIOTM
    IUUQMJOVYJTDTJPSHXJLJ-*0
    Linux؀ڥΛSCSIλʔήοτʹ͠Α͏
    

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28. Generic Target Core Mod
    Λ༗ޮʹ͢Δ
    

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29. $ targetcli!
    Warning: Could not load preferences file /root/.targetcli/prefs.bin.!
    targetcli GIT_VERSION (rtslib GIT_VERSION)!
    Copyright (c) 2011-2013 by Datera, Inc.!
    All rights reserved.!
    Created '/sys/kernel/config/target/loopback'.!
    Created '/sys/kernel/config/target/iscsi'.!
    Created '/sys/kernel/config/target/srpt'.!
    /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    targetcliͰઃఆ
    

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30. ݸʑͷઃఆ͸ͦΕͧΕͷσΟϨΫτϦʹcdͯ͠ߦ͏
    lsͰݱࡏͷσΟϨΫτϦҎԼʹ͋Δઃఆ߲໨Λ֬ೝ
    /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    ಉ໊͡લͷίϚϯυͰ΋σΟϨΫτϦʹΑͬͯػೳ͕ҧ͏఺ʹ஫ҙ
    

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31. /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    backstores
    ಡΈॻ͖͞ΕΔσʔλΛอଘ͓ͯ͘͠৔ॴ
    

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32. /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    fileio
    ϑΝΠϧʹσʔλΛอଘ͢Δ
    

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33. fileio
    create <ετϨʔδ໊> <ϑΝΠϧ໊> <αΠζ> [ ]
    /> cd /backstores/fileio!
    /backstores/fileio> create back0 /root/test.img 10M!
    Generating a wwn serial.!
    Not using buffered mode.!
    Created fileio back0.!
    /backstores/fileio> ls!
    o- fileio ................................................. [1 Storage Object]!
    o- back0 ...................................... [/root/test.img deactivated]!
    /backstores/fileio>
    createͰ৽͍͠backstoreΛ࡞੒
    

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34. fileio
    delete <ετϨʔδ໊>
    /backstores/fileio> ls!
    o- fileio ................................................. [1 Storage Object]!
    o- back0 ...................................... [/root/test.img deactivated]!
    /backstores/fileio> delete back0!
    Deleted storage object back0.!
    /backstores/fileio> ls!
    o- fileio ................................................. [0 Storage Object]!
    /backstores/fileio>
    deleteͰbackstoreΛ࡟আ
    

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35. /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    iblock
    ϒϩοΫσόΠεʹσʔλΛอଘ͢Δ
    

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36. iblock
    create <ετϨʔδ໊> <σόΠε໊>
    /backstores/iblock> cd /!
    /> cd /backstores/iblock !
    /backstores/iblock> create back0 /dev/sda4!
    Generating a wwn serial.!
    Created iblock storage object back0 using /dev/sda4.!
    /backstores/iblock> ls!
    o- iblock ................................................. [1 Storage Object]!
    o- back0 ........................................... [/dev/sda4 deactivated]!
    /backstores/iblock>
    createͰ৽͍͠backstoreΛ࡞੒
    delete͸fileioͱಉ͡
    

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37. /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    pscsi
    SCSIύεεϧʔ
    SCSIίϚϯυΛLIOͰղऍͤͣʹ
    ผͷSCSIλʔήοτʹؙ౤͛͢Δ
    

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38. /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    rd_dr/rd_mcp
    RAMʹσʔλΛอଘ͢Δ
    rd_mcp memcpyΛ࢖͏खݎ͍࣮
    rd_dr DMAΛ࢖͏଎͍࣮૷
    

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39. rd_dr/rd_mcp
    create <ετϨʔδ໊> <αΠζ>
    /> cd /backstores/rd_mcp
    /backstores/rd_mcp> create back1 10M
    Generating a wwn serial.
    Created rd_mcp ramdisk back1 with size 10M.
    /backstores/rd_mcp> ls
    o- rd_mcp ................................................. [1 Storage Object]
    o- back1 ............................................. [ramdisk deactivated]
    /backstores/rd_mcp>
    createͰ৽͍͠backstoreΛ࡞੒
    delete͸fileioͱಉ͡
    

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40. /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    ετϨʔδͷݟͤํ
    

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41. /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    SCSI RDMA Protocol
    ib_srpt
    InfinibandʹSCSIϓϩτίϧΛ৐ͤΔ
    

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42. /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    loopback
    ͜ͷϗετʹ
    ৽͍͠SCSIσόΠε͕઀ଓ͞ΕͨΑ͏ʹݟ͑Δ
    

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43. loopback
    create []
    createͰ৽͍͠ϧʔϓόοΫλʔήοτΛ࡞੒
    /> cd /loopback !
    /loopback> create!
    Created target naa.600140589cd08660.!
    /loopback> ls!
    o- loopback ....................................................... [1 Target]!
    o- naa.600140589cd08660 ............................. [naa.6001405cb9de14a5]!
    o- luns ......................................................... [0 LUNs]!
    /loopback>
    

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44. Logical Unit Number
    ͭͷ4$4*λʔήοτʹ͸
    ෳ਺ͷετϨʔδΛͿΒԼ͛Δ͜ͱ͕Ͱ͖Δ
    /> cd /loopback !
    /loopback> create!
    Created target naa.600140589cd08660.!
    /loopback> ls!
    o- loopback ....................................................... [1 Target]!
    o- naa.600140589cd08660 ............................. [naa.6001405cb9de14a5]!
    o- luns ......................................................... [0 LUNs]!
    /loopback>
    

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45. Logical Unit Number
    LUN0 LUN1 LUN2 LUN3 LUN4
    ͍ʹ͑͠ͷύϥϨϧSCSI͸
    ετϨʔδΛ਺चͭͳ͗ʹ͢Δ͜ͱ͕Ͱ໊͖ͨ࢒
    SCSIλʔήοτ
    గਖ਼ൃදதͰ͸-6/͸σΠδʔνΣʔϯͷσόΠεΛࣝผ͢Δͷ
    ʹ༻͍Δͱ͍ͯ͠·͕ͨ͠ɺͦͷ༻్Ͱ༻͍ΒΕΔͷ͸λʔήοτ
    *%Ͱ-6/ͱ͸ผ෺Ͱͨ͠ɻ-6/͸୯ҰͷσόΠε͕ෳ਺ͷػೳΛ
    ఏڙ͍ͯ͠Δ৔߹ʹɺͦΕΒΛࣝผ͢Δҝʹ༻͍ΒΕ·͢
    

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46. /> cd loopback/naa.600140589cd08660/luns
    /loopback/naa...9cd08660/luns> create /backstores/fileio/back0
    Selected LUN 0.
    Successfully created LUN 0.
    /loopback/naa...9cd08660/luns> ls
    o- luns .............................................................. [1 LUN]
    o- lun0 ..................................... [fileio/back0 (/root/usb.img)]
    /loopback/naa...9cd08660/luns>
    Logical Unit Number
    create <ετϨʔδ໊> []
    createͰࢦఆͨ͠ετϨʔδͰ৽͍͠LUNΛ࡞੒
    

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47. /> saveconfig!
    WARNING: Saving Olivia.localnet current configuration to disk will overwrite
    your boot settings.!
    The current target configuration will become the default boot config.!
    Are you sure? Type 'yes': yes
    ઃఆΛอଘͯ͠λʔήοτ͕ग़དྷ͔ͨݟͯΈΑ͏
    

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48. ৽͍͠σΟεΫ͕ग़དྷͯΔ
    $ dmesg!
    (ུ)!
    [31290.708141] init_tag_map: adjusted depth to 256!
    [31290.708145] init_tag_map: adjusted depth to 256!
    [31290.708221] scsi 4:0:1:0: Direct-Access LIO-ORG FILEIO 4.0
    PQ: 0 ANSI: 5!
    [31290.708952] sd 4:0:1:0: [sdb] 204800 512-byte logical blocks: (104 MB/100
    MiB)!
    [31290.709000] sd 4:0:1:0: [sdb] Write Protect is off!
    [31290.709003] sd 4:0:1:0: [sdb] Mode Sense: 43 00 00 08!
    [31290.709274] sd 4:0:1:0: [sdb] Write cache: disabled, read cache: enabled,
    doesn't support DPO or FUA!
    [31290.709519] sdb: unknown partition table!
    [31290.709679] sd 4:0:1:0: [sdb] Attached SCSI disk
    

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49. $ mkfs.ext4 /dev/sdb !
    mke2fs 1.42.12 (29-Aug-2014)!
    Creating filesystem with 102400 1k blocks and 25688 inodes!
    Filesystem UUID: 58d4ec84-a14a-4b9a-874d-cf3cc1b06331!
    Superblock backups stored on blocks: !
    ! 8193, 24577, 40961, 57345, 73729!
    !
    Allocating group tables: done !
    Writing inode tables: done !
    Creating journal (4096 blocks): done!
    Writing superblocks and filesystem accounting information: done !
    !
    $ mount /dev/sdb /mnt/loop/!
    $ df -h!
    ϑΝΠϧγε αΠζ ࢖༻ ࢒Γ ࢖༻% Ϛ΢ϯτҐஔ!
    (ུ)!
    /dev/sdb 93M 1.6M 85M 2% /mnt/loop!
    $
    Ϛ΢ϯτͰ͖ΔΑ
    

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50. /> ls!
    o- / ................................................................... [...]!
    o- backstores ........................................................ [...]!
    | o- fileio ............................................. [0 Storage Object]!
    | o- iblock ............................................. [0 Storage Object]!
    | o- pscsi .............................................. [0 Storage Object]!
    | o- rd_dr .............................................. [0 Storage Object]!
    | o- rd_mcp ............................................. [0 Storage Object]!
    o- ib_srpt ..................................................... [0 Targets]!
    o- iscsi ....................................................... [0 Targets]!
    o- loopback .................................................... [0 Targets]!
    />
    iSCSI
    TCP/IPωοτϫʔΫʹSCSIϓϩτίϧΛ৐ͤΔ
    

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51. /> cd iscsi !
    /iscsi> create!
    Created target iqn.2003-01.org.linux-iscsi.olivia.x8664:sn.7bb390f60a12.!
    Selected TPG Tag 1.!
    Successfully created TPG 1.!
    /iscsi> ls!
    o- iscsi .......................................................... [1 Target]!
    o- iqn.2003-01.org.linux-iscsi.olivia.x8664:sn.7bb390f60a12 ........ [1 TPG]!
    o- tpgt1 ....................................................... [enabled]!
    o- acls ....................................................... [0 ACLs]!
    o- luns ....................................................... [0 LUNs]!
    o- portals ................................................. [0 Portals]!
    /iscsi>
    iSCSI
    create []
    createͰ৽͍͠iSCSIλʔήοτΛ࡞੒
    

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52. /iscsi> cd iqn.2003-01.org.linux-iscsi.olivia.x8664:sn.7bb390f60a12/tpgt1/luns !
    /iscsi/iqn.20...12/tpgt1/luns> create /backstores/fileio/back0 !
    Selected LUN 0.!
    Successfully created LUN 0.!
    /iscsi/iqn.20...12/tpgt1/luns> ls!
    o- luns .............................................................. [1 LUN]!
    o- lun0 ..................................... [fileio/back0 (/root/usb.img)]!
    /iscsi/iqn.20...12/tpgt1/luns>
    Logical Unit Number
    create <ετϨʔδ໊> []
    createͰࢦఆͨ͠ετϨʔδͰ৽͍͠LUNΛ࡞੒
    ͜ͷ෦෼͸loopbackͷ৔߹ͱҰॹ
    

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53. /iscsi/iqn.20...0f60a12/tpgt1> cd portals !
    /iscsi/iqn.20...tpgt1/portals> create 192.168.67.1!
    Using default IP port 3260!
    Successfully created network portal 192.168.67.1:3260.!
    /iscsi/iqn.20...tpgt1/portals> ls!
    o- portals ........................................................ [1 Portal]!
    o- 192.168.67.1:3260 ................................... [OK, iser disabled]!
    /iscsi/iqn.20...tpgt1/portals>
    Portals
    create [<ϙʔτ>]
    ΠχγΤʔλ͔Βͷ઀ଓΛ଴ͪड͚Δ
    ΞυϨεͱϙʔτΛࢦఆ͢Δ
    σϑΥϧτͷϙʔτ͸3260൪
    

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54. /iscsi/iqn.20...12/tpgt1/acls> create iqn.2014-02.localnet.hahnela:openiscsi-5!
    bdbe8b0c609a2e4c0fa2a056ef7a686!
    Successfully created Node ACL for iqn.
    2014-02.localnet.hahnela:openiscsi-5bdbe8b0c609a2e4c0fa2a056ef7a686!
    Created mapped LUN 0.!
    /iscsi/iqn.20...12/tpgt1/acls> ls!
    o- acls .............................................................. [1 ACL]!
    o- iqn.2014-02.localnet.hahnela:openiscsi-5bdbe8b0c609a2e4c0fa2a056ef7a686
    [1 Mapped LUN]!
    o- mapped_lun0 ............................................... [lun0 (rw)]!
    /iscsi/iqn.20...12/tpgt1/acls>
    Access Control List
    create <ΠχγΤʔλͷ໊લ>
    ϩάΠϯΛڐՄ͢ΔΠχγΤʔλͷϦετ
    ೝূํ๏΍ύεϫʔυͷઃఆ΋͜͜Ͱ΍Δ
    

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55. $ cat /etc/iscsi/initiatorname.iscsi!
    (ུ)!
    InitiatorName=iqn.2014-02.localnet.hahnela:openiscsi-5bdbe8b0c609a2e4c0fa2a056e!
    f7a686
    Open-iSCSIͷ৔߹ΠχγΤʔλͷ໊લ͸
    /etc/iscsi/initiatorname.iscsi
    ʹॻ͔Ε͍ͯΔ
    GentooͳΒOpen-iSCSIΛemergeͨ࣌͠ʹ
    ద౰ʹੜ੒͞Ε͍ͯΔ͸ͣ
    

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56. /iscsi/iqn.20...12/tpgt1/acls> cd iqn.2014-02.localnet.hahnela:openiscsi-5bdbe8!
    b0c609a2e4c0fa2a056ef7a686/!
    /iscsi/iqn.20...a2a056ef7a686> set auth userid=foobar!
    Parameter userid is now 'foobar'.!
    /iscsi/iqn.20...a2a056ef7a686> set auth password=hogefuga!
    Parameter password is now ‘hogefuga'.!
    /iscsi/iqn.20...a2a056ef7a686> get auth!
    AUTH CONFIG GROUP!
    authenticate_target=0 [ro]!
    The authenticate_target auth_attr.!
    !
    password=hogefuga!
    The password auth_attr.!
    !
    password_mutual=!
    The password_mutual auth_attr.!
    !
    userid=foobar!
    The userid auth_attr.!
    !
    userid_mutual=!
    The userid_mutual auth_attr.
    Ϣʔβ໊ͱύεϫʔυΛઃఆ͠Α͏
    

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57. $ vim /etc/iscsi/iscsi.conf!
    (ུ)!
    # *************!
    # CHAP Settings!
    # *************!
    !
    # To enable CHAP authentication set node.session.auth.authmethod!
    # to CHAP. The default is None.!
    node.session.auth.authmethod = CHAP ← CHAPʹΑΔೝূΛ༗ޮʹ͢Δ!
    # To set a CHAP username and password for initiator!
    # authentication by the target(s), uncomment the following lines:!
    node.session.auth.username = foobar ← Ϣʔβ໊!
    node.session.auth.password = hogefuga ← ύεϫʔυ!
    !
    # To set a CHAP username and password for target(s)!
    (ུ)
    ΠχγΤʔλଆʹ΋Ϣʔβ໊ͱύεϫʔυΛઃఆ͠Α͏
    

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58. $ iscsiadm -m discovery -t st -p 192.168.67.1 -P 1!
    Target: iqn.2003-01.org.linux-iscsi.olivia.x8664:sn.7bb390f60a12!
    ! Portal: 192.168.67.1:3260,1!
    ! ! Iface Name: iface0!
    $ iscsiadm -m node --targetname iqn.2003-01.org.linux-iscsi.olivia.x8664:sn.
    7bb390f60a12 --login!
    Logging in to [iface: iface0, target: iqn.2003-01.org.linux-
    iscsi.olivia.x8664:sn.7bb390f60a12, portal: 192.168.67.1,3260]!
    Login to [iface: iface0, target: iqn.2003-01.org.linux-iscsi.olivia.x8664:sn.
    7bb390f60a12, portal: 192.168.67.1,3260] successful.
    ΠχγΤʔλଆ͔Β઀ଓͯ͠ΈΑ͏
    

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59. [967161.130736] scsi host33: iSCSI Initiator over TCP/IP!
    [967162.523325] scsi 33:0:0:0: Direct-Access LIO-ORG FILEIO 4.0
    PQ: 0 ANSI: 5!
    [967162.720618] sd 33:0:0:0: Attached scsi generic sg2 type 0!
    [967162.881617] sd 33:0:0:0: [sdc] 204800 512-byte logical blocks: (104 MB/100
    MiB)!
    [967163.263347] sd 33:0:0:0: [sdc] Write Protect is off!
    [967163.263354] sd 33:0:0:0: [sdc] Mode Sense: 43 00 00 08!
    [967163.413784] sd 33:0:0:0: [sdc] Write cache: disabled, read cache: enabled,
    doesn't support DPO or FUA!
    [967164.335413] sdc: unknown partition table!
    [967165.274567] sd 33:0:0:0: [sdc] Attached SCSI disk
    ৽͍͠σΟεΫ͕ग़དྷͯΔ
    

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60. ͜ͷଞʹ΋৭Μͳݟͤํ͕ग़དྷΔ
    'JCSF$IBOOFM 'JCSF$IBOOFMʹ4$4*ϓϩτίϧΛ৐ͤΔ
    'JCSF$IBOOFMPWFS
    &UIFSOFU
    '$P&ʹ4$4*ϓϩτίϧΛ৐ͤΔ
    'JSF8JSF 'JSF8JSF઀ଓͷσΟεΫʹͳΓ͖Δ
    *#.W4$4* *#.7JSUVBM*0ʹ4$4*ϓϩτίϧΛ৐ͤΔ
    J4&3
    *OpOJCBOEͰ5$1*1௨৴Λ͍ͯ͠Δ৔߹ʹ࢖͑Δ
    ΑΓޮ཰ͷྑ͍J4$4*
    64#(BEHFU 64#઀ଓͷσΟεΫʹͳΓ͖Δ
    WJSUJP LWNͷήετ؀ڥʹ4$4*σΟεΫΛఏڙ͢Δ
    

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61. Open-iSCSIͱLIOͰ
    ωοτϫʔΫӽ͠ʹ
    SCSIΛܨ͗์୊
    

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62. ͍··Ͱ
    

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63. ͜Ε͔Β
    

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64. ͱ͜ΖͰ
    

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65. ͜ΕʹiSCSIλʔήοτΛܨ͍͗ͨΜ͕ͩ
    

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66. WiiUʹBeagleBoneBlackΛ઀ଓ
    

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67. $ /etc/init.d/iscsid start!
    * Use of the opts variable is deprecated and will be!
    * removed in the future.!
    * Please use extra_commands, extra_started_commands or extra_stopped_commands.!
    * Checking open-iSCSI configuration ...!
    * Loading iSCSI modules ...!
    * Loading libiscsi ... [ ok ]!
    * Loading scsi_transport_iscsi ... [ ok ]!
    * Loading iscsi_tcp ... [ ok ]!
    * Starting iscsid ...!
    * Setting up iSCSI targets ...!
    iscsiadm: No records found! [ !! ]!
    BeagleBoneBlackͰOpen-iSCSIΛىಈ
    

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68. $ /etc/init.d/iscsid start!
    * Use of the opts variable is deprecated and will be!
    * removed in the future.!
    * Please use extra_commands, extra_started_commands or extra_stopped_commands.!
    * Checking open-iSCSI configuration ...!
    * Loading iSCSI modules ...!
    * Loading libiscsi ... [ ok ]!
    * Loading scsi_transport_iscsi ... [ ok ]!
    * Loading iscsi_tcp ... [ ok ]!
    * Starting iscsid ...!
    * Setting up iSCSI targets ...!
    iscsiadm: No records found! [ !! ]!
    $ iscsiadm -m discovery -t st -p 192.168.152.1 -P1!
    Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.406262d1b87f!
    ! Portal: 192.168.152.1:3260,1!
    ! ! Iface Name: default!
    Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.f3d75f94ab5f!
    ! Portal: 192.168.152.1:3260,1!
    ! ! Iface Name: default!
    Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.aa5bd06b61e8!
    ! Portal: 192.168.152.1:3260,1!
    ! ! Iface Name: default!
    LIO͕ಈ͍͍ͯΔαʔόʹ઀ଓ
    

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69. * Please use extra_commands, extra_started_commands or extra_stopped_commands.!
    * Checking open-iSCSI configuration ...!
    * Loading iSCSI modules ...!
    * Loading libiscsi ... [ ok ]!
    * Loading scsi_transport_iscsi ... [ ok ]!
    * Loading iscsi_tcp ... [ ok ]!
    * Starting iscsid ...!
    * Setting up iSCSI targets ...!
    iscsiadm: No records found! [ !! ]!
    $ iscsiadm -m discovery -t st -p 192.168.152.1 -P1!
    Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.406262d1b87f!
    ! Portal: 192.168.152.1:3260,1!
    ! ! Iface Name: default!
    Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.f3d75f94ab5f!
    ! Portal: 192.168.152.1:3260,1!
    ! ! Iface Name: default!
    Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.aa5bd06b61e8!
    ! Portal: 192.168.152.1:3260,1!
    ! ! Iface Name: default!
    $ iscsiadm -m node --targetname iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.aa5bd06b61e8 --login!
    Logging in to [iface: default, target: iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.aa5bd06b61e8, portal: 192.168.152.1,3260]!
    Login to [iface: default, target: iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.aa5bd06b61e8, portal: 192.168.152.1,3260] successful.!
    iSCSIλʔήοτʹϩάΠϯ
    

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70. ! ! Iface Name: default!
    Target: iqn.2003-01.org.linux-iscsi.hahnela.x8664:sn.aa5bd06b61e8!
    ! Portal: 192.168.152.1:3260,1!
    ! ! Iface Name: default!
    $ iscsiadm -m node --targetname iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.aa5bd06b61e8 --login!
    Logging in to [iface: default, target: iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.aa5bd06b61e8, portal: 192.168.152.1,3260]!
    Login to [iface: default, target: iqn.2003-01.org.linux-
    iscsi.hahnela.x8664:sn.aa5bd06b61e8, portal: 192.168.152.1,3260] successful.!
    $ dmesg|tail!
    [ 786.904712] iscsid (933): /proc/933/oom_adj is deprecated, please use /proc/
    933/oom_score_adj instead.!
    [ 865.973831] scsi0 : iSCSI Initiator over TCP/IP!
    [ 867.037208] scsi 0:0:0:0: Direct-Access LIO-ORG IBLOCK 4.0
    PQ: 0 ANSI: 5!
    [ 867.042950] sd 0:0:0:0: [sda] 41943040 512-byte logical blocks: (21.4 GB/20.0
    GiB)!
    [ 867.042999] sd 0:0:0:0: [sda] 4096-byte physical blocks!
    [ 867.047639] sd 0:0:0:0: [sda] Write Protect is off!
    [ 867.047698] sd 0:0:0:0: [sda] Mode Sense: 43 00 10 08!
    [ 867.049386] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled,
    supports DPO and FUA!
    [ 867.088748] sda: unknown partition table!
    [ 867.104140] sd 0:0:0:0: [sda] Attached SCSI disk!
    /dev/sdaొ৔
    

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71. USB Gadget API Framework
    LinuxͷUSBσόΠείϯτϩʔϥ༻υϥΠό
    LinuxϚγϯ͕৭ΜͳUSBσόΠεʹͳΓ͖Δ
    IUUQXXXMJOVYVTCPSHHBEHFU
    

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72. $ modprobe g_mass_storage file=/dev/sda
    BeagleBoneBlackʹ͸
    ϗετʹ΋σόΠεʹ΋ͳΕΔUSBίϯτϩʔϥ͕ࡌ͍ͬͯΔ
    USB Gadgetͷmass storageυϥΠόΛϩʔυ
    όοΫετϨʔδͱͯ͠ઌఔͷ/dev/sdaΛࢦఆ
    BeagleBoneBlackʹiSCSIͱUSBͷม׵Λͤ͞Δ
    

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73. WiiU͕USB֎෇͚ϋʔυσΟεΫͱͯ͠ೝࣝͯ͘͠ΕΔ
    

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74. iSCSIඇରԠσόΠεͰ΋
    ωοτϫʔΫӽ͠ʹ
    SCSIΛܨ͗์୊
    

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75. ·ͱΊ
    Open-iSCSIͰiSCSIλʔήοτʹ઀ଓ
    LIOͰiSCSIλʔήοτΛ࡞੒
    USB GadgetͰiSCSIΛUSBʹม׵
    

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