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/linux/drivers/md/
H A Ddm-mpath.c62 struct multipath *m; /* Owning multipath instance */
73 struct multipath { struct
141 static bool mpath_double_check_test_bit(int MPATHF_bit, struct multipath *m) in mpath_double_check_test_bit()
215 static struct multipath *alloc_multipath(struct dm_target *ti) in alloc_multipath()
217 struct multipath *m; in alloc_multipath()
239 static int alloc_multipath_stage2(struct dm_target *ti, struct multipath *m) in alloc_multipath_stage2()
261 static void free_multipath(struct multipath *m) in free_multipath()
316 static int __pg_init_all_paths(struct multipath *m) in __pg_init_all_paths()
347 static int pg_init_all_paths(struct multipath *m) in pg_init_all_paths()
359 static void __switch_pg(struct multipath *m, struct priority_group *pg) in __switch_pg()
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H A DMakefile9 dm-multipath-y += dm-path-selector.o dm-mpath.o
61 obj-$(CONFIG_DM_MULTIPATH) += dm-multipath.o dm-round-robin.o
H A DKconfig462 Allow volume managers to support multipath hardware.
/linux/Documentation/admin-guide/
H A Dnvme-multipath.rst4 Linux NVMe multipath
7 This document describes NVMe multipath and its path selection policies supported
14 The NVMe multipath feature in Linux integrates namespaces with the same
15 identifier into a single block device. Using multipath enhances the reliability
17 sends I/O to this merged block device, the multipath mechanism selects one of
27 one. Current the NVMe multipath policies include numa(default), round-robin and
H A Dindex.rst156 nvme-multipath
H A Dmd.rst195 raid5, linear, multipath, faulty.
265 multipath), all components must be the same size - or at least
H A Ddevices.txt2631 0 = /dev/vx/rdmp/* First multipath device
2632 1 = /dev/vx/rdmp/* Second multipath device
2635 0 = /dev/vx/dmp/* First multipath device
2636 1 = /dev/vx/dmp/* Second multipath device
/linux/Documentation/admin-guide/device-mapper/
H A Ddm-service-time.rst82 # echo "0 10 multipath 0 0 1 1 service-time 0 2 2 8:0 128 1 8:16 128 4" \
86 test: 0 10 multipath 0 0 1 1 service-time 0 2 2 8:0 128 1 8:16 128 4
89 test: 0 10 multipath 2 0 0 0 1 1 E 0 2 2 8:0 A 0 0 1 8:16 A 0 0 4
94 # echo "0 10 multipath 0 0 1 1 service-time 0 2 2 8:0 128 2 8:16 128 8" \
98 test: 0 10 multipath 0 0 1 1 service-time 0 2 2 8:0 128 2 8:16 128 8
101 test: 0 10 multipath 2 0 0 0 1 1 E 0 2 2 8:0 A 0 0 2 8:16 A 0 0 8
H A Ddm-queue-length.rst41 # echo "0 10 multipath 0 0 1 1 queue-length 0 2 1 8:0 128 8:16 128" \
45 test: 0 10 multipath 0 0 1 1 queue-length 0 2 1 8:0 128 8:16 128
48 test: 0 10 multipath 2 0 0 0 1 1 E 0 2 1 8:0 A 0 0 8:16 A 0 0
H A Ddm-uevent.rst84 DM_TARGET=multipath
101 DM_TARGET=multipath
H A Ddm-ima.rst334 #. multipath
526 6. multipath
529 section above) has the following data format for 'multipath' target.
536 target_name := "target_name=multipath"
552 When a 'multipath' target is loaded, then IMA ASCII measurement log will have an entry
553 similar to the following, depicting what 'multipath' attributes are measured in EVENT_DATA
559 …target_index=0,target_begin=0,target_len=2097152,target_name=multipath,target_version=1.14.0,nr_pr…
H A Dswitch.rst54 The lower tier consists of a single dm multipath device for each member.
55 Each of these multipath devices contains the set of paths directly to
/linux/drivers/nvme/host/
H A DKconfig18 bool "NVMe multipath support"
21 This option controls support for multipath access to NVMe
22 subsystems. If this option is enabled support for NVMe multipath
24 for NVMe multipath access is excluded from the kernel. When this
26 own /dev/nvmeXnY device entry and NVMe multipath access is
H A Dmultipath.c12 bool multipath = true; variable
38 module_param_cb(multipath, &multipath_param_ops, &multipath, 0444);
39 MODULE_PARM_DESC(multipath,
53 multipath = true; in multipath_always_on_set()
740 !multipath) in nvme_mpath_alloc_disk()
1355 if (!multipath || !ctrl->subsys || in nvme_mpath_init_identify()
H A DMakefile16 nvme-core-$(CONFIG_NVME_MULTIPATH) += multipath.o
H A Dnvme.h1052 extern bool multipath;
1071 #define multipath false macro
/linux/drivers/scsi/device_handler/
H A DKconfig12 devices utilized in multipath configurations. Say Y here to
/linux/Documentation/networking/
H A Dnexthop-group-resilient.rst12 the legacy multipath next-hop group, which uses the hash-threshold
36 If a multipath group is used for load-balancing between multiple servers,
41 If a multipath group is used for load-balancing among available paths to
167 same manner as other multipath groups. The following changes apply to the
H A Drds.rst416 Transports such as TCP that are multipath capable may then set up a
420 Transports announce themselves as multipath capable by setting the
422 transport is multipath-capable, rds_sendmsg() hashes outgoing traffic
433 is multipath capable.
H A Dip-sysctl.rst91 multipath routes. If disabled, neighbor information is not used and
103 Controls which hash policy to use for multipath routes. Only valid
113 - 3 - Custom multipath hash. Fields used for multipath hash calculation
117 When fib_multipath_hash_policy is set to 3 (custom multipath hash), the
118 fields used for multipath hash calculation are determined by this
121 This value is a bitmask which enables various fields for multipath hash
144 The seed value used when calculating hash for multipath routes. Applies
148 When set to 0, the seed value used for multipath routing defaults to an
2407 Controls which hash policy to use for multipath routes.
2416 - 3 - Custom multipath hash. Fields used for multipath hash calculation
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/linux/Documentation/admin-guide/media/
H A Dsi476x.rst116 0x00 multhint 0 - multipath value has not crossed
118 1 - multipath value has crossed
/linux/drivers/block/rnbd/
H A DREADME37 "path=" options can be specified in order to use multipath (see RTRS
/linux/Documentation/ABI/testing/
H A Dsysfs-class-rnbd-client60 the selected multipath policy (see RTRS mp_policy sysfs entry description).
/linux/drivers/infiniband/ulp/rtrs/
H A DREADME16 multipath I/O (see "add_path" and "mp_policy" configuration entries in
/linux/net/ipv4/
H A DKconfig81 bool "IP: equal cost multipath"

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