aboutsummaryrefslogtreecommitdiff
path: root/Documentation/admin-guide/blockdev/drbd/DRBD-data-packets.svg
diff options
context:
space:
mode:
authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /Documentation/admin-guide/blockdev/drbd/DRBD-data-packets.svg
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
Diffstat (limited to 'Documentation/admin-guide/blockdev/drbd/DRBD-data-packets.svg')
-rw-r--r--Documentation/admin-guide/blockdev/drbd/DRBD-data-packets.svg459
1 files changed, 459 insertions, 0 deletions
diff --git a/Documentation/admin-guide/blockdev/drbd/DRBD-data-packets.svg b/Documentation/admin-guide/blockdev/drbd/DRBD-data-packets.svg
new file mode 100644
index 000000000..48a1e2165
--- /dev/null
+++ b/Documentation/admin-guide/blockdev/drbd/DRBD-data-packets.svg
@@ -0,0 +1,459 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<svg
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ version="1.0"
+ width="210mm"
+ height="297mm"
+ viewBox="0 0 21000 29700"
+ id="svg2"
+ style="fill-rule:evenodd">
+ <defs
+ id="defs4" />
+ <g
+ id="Default"
+ style="visibility:visible">
+ <desc
+ id="desc176">Master slide</desc>
+ </g>
+ <path
+ d="M 11999,19601 L 11899,19301 L 12099,19301 L 11999,19601 z"
+ id="path189"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 11999,18801 L 11999,19361"
+ id="path193"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <path
+ d="M 7999,21401 L 7899,21101 L 8099,21101 L 7999,21401 z"
+ id="path205"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 7999,20601 L 7999,21161"
+ id="path209"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <path
+ d="M 11999,18801 L 11685,18840 L 11724,18644 L 11999,18801 z"
+ id="path221"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 7999,18001 L 11764,18754"
+ id="path225"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <text
+ x="-3023.845"
+ y="1106.8124"
+ transform="matrix(0.9895258,-0.1443562,0.1443562,0.9895258,0,0)"
+ id="text243"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="6115.1553 6344.1553 6555.1553 6784.1553 6962.1553 7051.1553 7228.1553 7457.1553 7635.1553 7813.1553 7885.1553"
+ y="21390.812"
+ id="tspan245">RSDataReply</tspan>
+ </text>
+ <path
+ d="M 7999,20601 L 8281,20458 L 8311,20655 L 7999,20601 z"
+ id="path255"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 11999,20001 L 8236,20565"
+ id="path259"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <text
+ x="3502.5356"
+ y="-2184.6621"
+ transform="matrix(0.9788674,0.2044961,-0.2044961,0.9788674,0,0)"
+ id="text277"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12321.536 12550.536 12761.536 12990.536 13168.536 13257.536 13434.536 13663.536 13841.536 14019.536 14196.536 14374.536 14535.536"
+ y="15854.338"
+ id="tspan279">RSDataRequest</tspan>
+ </text>
+ <text
+ id="text293"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="4034 4263 4440 4703 4881 5042 5219 5397 5503 5681 5842 6003 6180 6341 6519 6625 6803 6980 7158 7336 7497 7586 7692"
+ y="17807"
+ id="tspan295">w_make_resync_request()</tspan>
+ </text>
+ <text
+ id="text309"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12199 12305 12483 12644 12821 12893 13054 13232 13410 13638 13816 13905 14083 14311 14489 14667 14845 15023 15184 15272 15378"
+ y="18806"
+ id="tspan311">receive_DataRequest()</tspan>
+ </text>
+ <text
+ id="text325"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12199 12377 12483 12660 12838 13016 13194 13372 13549 13621 13799 13977 14083 14261 14438 14616 14794 14955 15133 15294 15399"
+ y="19606"
+ id="tspan327">drbd_endio_read_sec()</tspan>
+ </text>
+ <text
+ id="text341"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12191 12420 12597 12775 12953 13131 13309 13486 13664 13770 13931 14109 14287 14375 14553 14731 14837 15015 15192 15298"
+ y="20007"
+ id="tspan343">w_e_end_rsdata_req()</tspan>
+ </text>
+ <text
+ id="text357"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="4444 4550 4728 4889 5066 5138 5299 5477 5655 5883 6095 6324 6501 6590 6768 6997 7175 7352 7424 7585 7691"
+ y="20507"
+ id="tspan359">receive_RSDataReply()</tspan>
+ </text>
+ <text
+ id="text373"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="4457 4635 4741 4918 5096 5274 5452 5630 5807 5879 6057 6235 6464 6569 6641 6730 6908 7086 7247 7425 7585 7691"
+ y="21407"
+ id="tspan375">drbd_endio_write_sec()</tspan>
+ </text>
+ <text
+ id="text389"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="4647 4825 5003 5180 5358 5536 5714 5820 5997 6158 6319 6497 6658 6836 7013 7085 7263 7424 7585 7691"
+ y="21907"
+ id="tspan391">e_end_resync_block()</tspan>
+ </text>
+ <path
+ d="M 11999,22601 L 11685,22640 L 11724,22444 L 11999,22601 z"
+ id="path401"
+ style="fill:#000080;visibility:visible" />
+ <path
+ d="M 7999,21801 L 11764,22554"
+ id="path405"
+ style="fill:none;stroke:#000080;visibility:visible" />
+ <text
+ x="4290.3008"
+ y="-2369.6162"
+ transform="matrix(0.9788674,0.2044961,-0.2044961,0.9788674,0,0)"
+ id="text423"
+ style="font-size:318px;font-weight:400;fill:#000080;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="13610.301 13911.301 14016.301 14088.301 14177.301 14355.301 14567.301 14728.301"
+ y="19573.385"
+ id="tspan425">WriteAck</tspan>
+ </text>
+ <text
+ id="text439"
+ style="font-size:318px;font-weight:400;fill:#000080;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12199 12377 12555 12644 12821 13033 13105 13283 13444 13604 13816 13977 14138 14244"
+ y="22559"
+ id="tspan441">got_BlockAck()</tspan>
+ </text>
+ <text
+ id="text455"
+ style="font-size:423px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="7999 8304 8541 8753 8964 9201 9413 9531 9769 9862 10099 10310 10522 10734 10852 10971 11208 11348 11585 11822"
+ y="16877"
+ id="tspan457">Resync blocks, 4-32K</tspan>
+ </text>
+ <path
+ d="M 12000,7601 L 11900,7301 L 12100,7301 L 12000,7601 z"
+ id="path467"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 12000,6801 L 12000,7361"
+ id="path471"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <path
+ d="M 12000,6801 L 11686,6840 L 11725,6644 L 12000,6801 z"
+ id="path483"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 8000,6001 L 11765,6754"
+ id="path487"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <text
+ x="-1288.1796"
+ y="1279.7666"
+ transform="matrix(0.9895258,-0.1443562,0.1443562,0.9895258,0,0)"
+ id="text505"
+ style="font-size:318px;font-weight:400;fill:#000080;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="8174.8208 8475.8203 8580.8203 8652.8203 8741.8203 8919.8203 9131.8203 9292.8203"
+ y="9516.7666"
+ id="tspan507">WriteAck</tspan>
+ </text>
+ <path
+ d="M 8000,8601 L 8282,8458 L 8312,8655 L 8000,8601 z"
+ id="path517"
+ style="fill:#000080;visibility:visible" />
+ <path
+ d="M 12000,8001 L 8237,8565"
+ id="path521"
+ style="fill:none;stroke:#000080;visibility:visible" />
+ <text
+ x="1065.6655"
+ y="-2097.7664"
+ transform="matrix(0.9788674,0.2044961,-0.2044961,0.9788674,0,0)"
+ id="text539"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="10682.666 10911.666 11088.666 11177.666"
+ y="4107.2339"
+ id="tspan541">Data</tspan>
+ </text>
+ <text
+ id="text555"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="4746 4924 5030 5207 5385 5563 5826 6003 6164 6342 6520 6626 6803 6981 7159 7337 7498 7587 7692"
+ y="5505"
+ id="tspan557">drbd_make_request()</tspan>
+ </text>
+ <text
+ id="text571"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12200 12306 12484 12645 12822 12894 13055 13233 13411 13639 13817 13906 14084 14190"
+ y="6806"
+ id="tspan573">receive_Data()</tspan>
+ </text>
+ <text
+ id="text587"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12200 12378 12484 12661 12839 13017 13195 13373 13550 13622 13800 13978 14207 14312 14384 14473 14651 14829 14990 15168 15328 15434"
+ y="7606"
+ id="tspan589">drbd_endio_write_sec()</tspan>
+ </text>
+ <text
+ id="text603"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12192 12370 12548 12725 12903 13081 13259 13437 13509 13686 13847 14008 14114"
+ y="8007"
+ id="tspan605">e_end_block()</tspan>
+ </text>
+ <text
+ id="text619"
+ style="font-size:318px;font-weight:400;fill:#000080;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="5647 5825 6003 6092 6269 6481 6553 6731 6892 7052 7264 7425 7586 7692"
+ y="8606"
+ id="tspan621">got_BlockAck()</tspan>
+ </text>
+ <text
+ id="text635"
+ style="font-size:423px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="8000 8305 8542 8779 9016 9109 9346 9486 9604 9956 10049 10189 10328 10565 10705 10942 11179 11298 11603 11742 11835 11954 12191 12310 12428 12665 12902 13139 13279 13516 13753"
+ y="4877"
+ id="tspan637">Regular mirrored write, 512-32K</tspan>
+ </text>
+ <text
+ id="text651"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="5381 5610 5787 5948 6126 6304 6482 6659 6837 7015 7087 7265 7426 7587 7692"
+ y="6003"
+ id="tspan653">w_send_dblock()</tspan>
+ </text>
+ <path
+ d="M 8000,6800 L 7900,6500 L 8100,6500 L 8000,6800 z"
+ id="path663"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 8000,6000 L 8000,6560"
+ id="path667"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <text
+ id="text683"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="4602 4780 4886 5063 5241 5419 5597 5775 5952 6024 6202 6380 6609 6714 6786 6875 7053 7231 7409 7515 7587 7692"
+ y="6905"
+ id="tspan685">drbd_endio_write_pri()</tspan>
+ </text>
+ <path
+ d="M 12000,13602 L 11900,13302 L 12100,13302 L 12000,13602 z"
+ id="path695"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 12000,12802 L 12000,13362"
+ id="path699"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <path
+ d="M 12000,12802 L 11686,12841 L 11725,12645 L 12000,12802 z"
+ id="path711"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 8000,12002 L 11765,12755"
+ id="path715"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <text
+ x="-2155.5266"
+ y="1201.5964"
+ transform="matrix(0.9895258,-0.1443562,0.1443562,0.9895258,0,0)"
+ id="text733"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="7202.4736 7431.4736 7608.4736 7697.4736 7875.4736 8104.4736 8282.4736 8459.4736 8531.4736"
+ y="15454.597"
+ id="tspan735">DataReply</tspan>
+ </text>
+ <path
+ d="M 8000,14602 L 8282,14459 L 8312,14656 L 8000,14602 z"
+ id="path745"
+ style="fill:#008000;visibility:visible" />
+ <path
+ d="M 12000,14002 L 8237,14566"
+ id="path749"
+ style="fill:none;stroke:#008000;visibility:visible" />
+ <text
+ x="2280.3804"
+ y="-2103.2141"
+ transform="matrix(0.9788674,0.2044961,-0.2044961,0.9788674,0,0)"
+ id="text767"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="11316.381 11545.381 11722.381 11811.381 11989.381 12218.381 12396.381 12573.381 12751.381 12929.381 13090.381"
+ y="9981.7861"
+ id="tspan769">DataRequest</tspan>
+ </text>
+ <text
+ id="text783"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="4746 4924 5030 5207 5385 5563 5826 6003 6164 6342 6520 6626 6803 6981 7159 7337 7498 7587 7692"
+ y="11506"
+ id="tspan785">drbd_make_request()</tspan>
+ </text>
+ <text
+ id="text799"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12200 12306 12484 12645 12822 12894 13055 13233 13411 13639 13817 13906 14084 14312 14490 14668 14846 15024 15185 15273 15379"
+ y="12807"
+ id="tspan801">receive_DataRequest()</tspan>
+ </text>
+ <text
+ id="text815"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12200 12378 12484 12661 12839 13017 13195 13373 13550 13622 13800 13978 14084 14262 14439 14617 14795 14956 15134 15295 15400"
+ y="13607"
+ id="tspan817">drbd_endio_read_sec()</tspan>
+ </text>
+ <text
+ id="text831"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="12192 12421 12598 12776 12954 13132 13310 13487 13665 13843 14021 14110 14288 14465 14571 14749 14927 15033"
+ y="14008"
+ id="tspan833">w_e_end_data_req()</tspan>
+ </text>
+ <g
+ id="g835"
+ style="visibility:visible">
+ <desc
+ id="desc837">Drawing</desc>
+ <text
+ id="text847"
+ style="font-size:318px;font-weight:400;fill:#008000;font-family:Helvetica embedded">
+ <tspan
+ x="4885 4991 5169 5330 5507 5579 5740 5918 6096 6324 6502 6591 6769 6997 7175 7353 7425 7586 7692"
+ y="14607"
+ id="tspan849">receive_DataReply()</tspan>
+ </text>
+ </g>
+ <text
+ id="text863"
+ style="font-size:423px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="8000 8305 8398 8610 8821 8914 9151 9363 9575 9693 9833 10070 10307 10544 10663 10781 11018 11255 11493 11632 11869 12106"
+ y="10878"
+ id="tspan865">Diskless read, 512-32K</tspan>
+ </text>
+ <text
+ id="text879"
+ style="font-size:318px;font-weight:400;fill:#008000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="5029 5258 5435 5596 5774 5952 6130 6307 6413 6591 6769 6947 7125 7230 7408 7586 7692"
+ y="12004"
+ id="tspan881">w_send_read_req()</tspan>
+ </text>
+ <text
+ id="text895"
+ style="font-size:423px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="6961 7266 7571 7854 8159 8278 8515 8633 8870 9107 9226 9463 9581 9700 9793 10030"
+ y="2806"
+ id="tspan897">DRBD 8 data flow</tspan>
+ </text>
+ <path
+ d="M 3900,5300 L 3700,5300 L 3700,7000 L 3900,7000"
+ id="path907"
+ style="fill:none;stroke:#000000;visibility:visible" />
+ <path
+ d="M 3900,17600 L 3700,17600 L 3700,22000 L 3900,22000"
+ id="path919"
+ style="fill:none;stroke:#000000;visibility:visible" />
+ <path
+ d="M 16100,20000 L 16300,20000 L 16300,18500 L 16100,18500"
+ id="path931"
+ style="fill:none;stroke:#000000;visibility:visible" />
+ <text
+ id="text947"
+ style="font-size:318px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="2126 2304 2376 2554 2731 2909 3087 3159 3337 3515 3587 3764 3870"
+ y="5202"
+ id="tspan949">al_begin_io()</tspan>
+ </text>
+ <text
+ id="text963"
+ style="font-size:318px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="1632 1810 1882 2060 2220 2398 2661 2839 2910 3088 3177 3355 3533 3605 3783 3888"
+ y="7331"
+ id="tspan965">al_complete_io()</tspan>
+ </text>
+ <text
+ id="text979"
+ style="font-size:318px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="2126 2232 2393 2571 2748 2926 3104 3176 3354 3531 3603 3781 3887"
+ y="17431"
+ id="tspan981">rs_begin_io()</tspan>
+ </text>
+ <text
+ id="text995"
+ style="font-size:318px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="1626 1732 1893 2071 2231 2409 2672 2849 2921 3099 3188 3366 3544 3616 3793 3899"
+ y="22331"
+ id="tspan997">rs_complete_io()</tspan>
+ </text>
+ <text
+ id="text1011"
+ style="font-size:318px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="16027 16133 16294 16472 16649 16827 17005 17077 17255 17432 17504 17682 17788"
+ y="18402"
+ id="tspan1013">rs_begin_io()</tspan>
+ </text>
+ <text
+ id="text1027"
+ style="font-size:318px;font-weight:400;fill:#000000;visibility:visible;font-family:Helvetica embedded">
+ <tspan
+ x="16115 16221 16382 16560 16720 16898 17161 17338 17410 17588 17677 17855 18033 18105 18282 18388"
+ y="20331"
+ id="tspan1029">rs_complete_io()</tspan>
+ </text>
+</svg>