1 tbd Sun Microsystems, Inc.
3 * Support for networks:
4 socklnd - any kernel supported by Lustre,
5 qswlnd - Qsnet kernel modules 5.20 and later,
6 openiblnd - IbGold 1.8.2,
7 o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3
8 viblnd - Voltaire ibhost 3.4.5 and later,
9 ciblnd - Topspin 3.2.0,
10 iiblnd - Infiniserv 3.3 + PathBits patch,
11 gmlnd - GM 2.1.22 and later,
12 mxlnd - MX 1.2.1 or later,
13 ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x
22 Description: concurrent_sends in IB LNDs should not be changeable at run time
23 Details : concurrent_sends in IB LNDs should not be changeable at run time
27 Description: ptl_send_rpc hits LASSERT when ptl_send_buf fails
28 Details : only hits under out-of-memory situations
31 -------------------------------------------------------------------------------
34 04-26-2008 Sun Microsystems, Inc.
36 * Support for networks:
37 socklnd - any kernel supported by Lustre,
38 qswlnd - Qsnet kernel modules 5.20 and later,
39 openiblnd - IbGold 1.8.2,
40 o2iblnd - OFED 1.1 and 1.2.0, 1.2.5
41 viblnd - Voltaire ibhost 3.4.5 and later,
42 ciblnd - Topspin 3.2.0,
43 iiblnd - Infiniserv 3.3 + PathBits patch,
44 gmlnd - GM 2.1.22 and later,
45 mxlnd - MX 1.2.1 or later,
46 ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x
50 Description: excessive debug information removed
51 Details : excessive debug information removed
55 Description: ksocknal_create_conn() hit ASSERTION during connection race
56 Details : ksocknal_create_conn() hit ASSERTION during connection race
60 Description: ksocknal_send_hello() hit ASSERTION while connecting race
61 Details : ksocknal_send_hello() hit ASSERTION while connecting race
65 Description: o2iblnd/ptllnd credit deadlock in a routed config.
66 Details : o2iblnd/ptllnd credit deadlock in a routed config.
70 Description: High load after starting lnet
71 Details : gmlnd should sleep in rx thread in interruptible way. Otherwise,
72 uptime utility reports high load that looks confusingly.
76 Description: ksocklnd fails to establish connection if accept_port is high
77 Details : PID remapping must not be done for active (outgoing) connections
79 --------------------------------------------------------------------------------
81 2008-01-11 Sun Microsystems, Inc.
83 * Support for networks:
84 socklnd - any kernel supported by Lustre,
85 qswlnd - Qsnet kernel modules 5.20 and later,
86 openiblnd - IbGold 1.8.2,
87 o2iblnd - OFED 1.1 and 1.2.0, 1.2.5
88 viblnd - Voltaire ibhost 3.4.5 and later,
89 ciblnd - Topspin 3.2.0,
90 iiblnd - Infiniserv 3.3 + PathBits patch,
91 gmlnd - GM 2.1.22 and later,
92 mxlnd - MX 1.2.1 or later,
93 ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x
96 Description: liblustre network error
97 Details : liblustre clients should understand LNET_ACCEPT_PORT environment
98 variable even if they don't start lnet acceptor.
102 Description: Strange message from lnet (Ignoring prediction from the future)
103 Details : Incorrect calculation of peer's last_alive value in ksocklnd
105 --------------------------------------------------------------------------------
107 2007-12-07 Cluster File Systems, Inc. <info@clusterfs.com>
109 * Support for networks:
110 socklnd - any kernel supported by Lustre,
111 qswlnd - Qsnet kernel modules 5.20 and later,
112 openiblnd - IbGold 1.8.2,
113 o2iblnd - OFED 1.1 and 1.2.0, 1.2.5.
114 viblnd - Voltaire ibhost 3.4.5 and later,
115 ciblnd - Topspin 3.2.0,
116 iiblnd - Infiniserv 3.3 + PathBits patch,
117 gmlnd - GM 2.1.22 and later,
118 mxlnd - MX 1.2.1 or later,
119 ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x
123 Description: ASSERTION(me == md->md_me) failed in lnet_match_md()
127 Description: increase send queue size for ciblnd/openiblnd
131 Description: new userspace socklnd
132 Details : Old userspace tcpnal that resided in lnet/ulnds/socklnd replaced
133 with new one - usocklnd.
135 Severity : enhancement
137 Description: Console message flood
138 Details : Make cdls ratelimiting more tunable by adding several tunable in
139 procfs /proc/sys/lnet/console_{min,max}_delay_centisecs and
140 /proc/sys/lnet/console_backoff.
142 --------------------------------------------------------------------------------
144 2007-09-27 Cluster File Systems, Inc. <info@clusterfs.com>
146 * Support for networks:
147 socklnd - any kernel supported by Lustre,
148 qswlnd - Qsnet kernel modules 5.20 and later,
149 openiblnd - IbGold 1.8.2,
150 o2iblnd - OFED 1.1 and 1.2,
151 viblnd - Voltaire ibhost 3.4.5 and later,
152 ciblnd - Topspin 3.2.0,
153 iiblnd - Infiniserv 3.3 + PathBits patch,
154 gmlnd - GM 2.1.22 and later,
155 mxlnd - MX 1.2.1 or later,
156 ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x
160 Description: /proc/sys/lnet has non-sysctl entries
161 Details : Updating dump_kernel/daemon_file/debug_mb to use sysctl variables
165 Description: TOE Kernel panic by ksocklnd
166 Details : offloaded sockets provide their own implementation of sendpage,
167 can't call tcp_sendpage() directly
171 Description: kibnal_shutdown() doesn't finish; lconf --cleanup hangs
172 Details : races between lnd_shutdown and peer creation prevent
173 lnd_shutdown from finishing.
177 Description: open files rlimit 1024 reached while liblustre testing
178 Details : ulnds/socklnd must close open socket after unsuccessful
183 Description: build error
184 Details : fix typos in gmlnd, ptllnd and viblnd
186 ------------------------------------------------------------------------------
188 2007-07-30 Cluster File Systems, Inc. <info@clusterfs.com>
190 * Support for networks:
191 socklnd - kernels up to 2.6.16,
192 qswlnd - Qsnet kernel modules 5.20 and later,
193 openiblnd - IbGold 1.8.2,
194 o2iblnd - OFED 1.1 and 1.2
195 viblnd - Voltaire ibhost 3.4.5 and later,
196 ciblnd - Topspin 3.2.0,
197 iiblnd - Infiniserv 3.3 + PathBits patch,
198 gmlnd - GM 2.1.22 and later,
199 mxlnd - MX 1.2.1 or later,
200 ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x
202 2007-06-21 Cluster File Systems, Inc. <info@clusterfs.com>
204 * Support for networks:
205 socklnd - kernels up to 2.6.16,
206 qswlnd - Qsnet kernel modules 5.20 and later,
207 openiblnd - IbGold 1.8.2,
209 viblnd - Voltaire ibhost 3.4.5 and later,
210 ciblnd - Topspin 3.2.0,
211 iiblnd - Infiniserv 3.3 + PathBits patch,
212 gmlnd - GM 2.1.22 and later,
213 mxlnd - MX 1.2.1 or later,
214 ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x
218 Description: Initialize cpumask before use
222 Description: ASSERTION failures when upgrading to the patchless zero-copy
224 Details : This bug affects "rolling upgrades", causing an inconsistent
225 protocol version negotiation and subsequent assertion failure
226 during rolling upgrades after the first wave of upgrades.
230 Details : Change "dropped message" CERRORs to D_NETERROR so they are
231 logged instead of creating "console chatter" when a lustre
232 timeout races with normal RPC completion.
235 Details : lnet_clear_peer_table can wait forever if user forgets to
239 Details : libcfs_id2str should check pid against LNET_PID_ANY.
243 Description: added LNET self test
244 Details : landing b_self_test
249 Description: cfs_duration_{u,n}sec() wrongly calculate nanosecond part of
251 Details : do_div() macro is used incorrectly.
253 2007-04-23 Cluster File Systems, Inc. <info@clusterfs.com>
257 Description: make panic on lbug configurable
261 Description: Add OFED1.2 support to o2iblnd
262 Details : o2iblnd depends on OFED's modules, if out-tree OFED's modules
263 are installed (other than kernel's in-tree infiniband), there
264 could be some problem while insmod o2iblnd (mismatch CRC of
266 If extra Module.symvers is supported in kernel (i.e, 2.6.17),
267 this link provides solution:
268 https://bugs.openfabrics.org/show_bug.cgi?id=355
269 if extra Module.symvers is not supported in kernel, we will
270 have to run the script in bug 12316 to update
271 $LINUX/module.symvers before building o2iblnd.
272 More details about this are in bug 12316.
274 ------------------------------------------------------------------------------
276 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
277 * version 1.4.10 / 1.6.0
278 * Support for networks:
279 socklnd - kernels up to 2.6.16,
280 qswlnd - Qsnet kernel modules 5.20 and later,
281 openiblnd - IbGold 1.8.2,
283 viblnd - Voltaire ibhost 3.4.5 and later,
284 ciblnd - Topspin 3.2.0,
285 iiblnd - Infiniserv 3.3 + PathBits patch,
286 gmlnd - GM 2.1.22 and later,
287 mxlnd - MX 1.2.1 or later,
288 ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x
292 Description: Ptllnd didn't init kptllnd_data.kptl_idle_txs before it could be
293 possibly accessed in kptllnd_shutdown. Ptllnd should init
294 kptllnd_data.kptl_ptlid2str_lock before calling kptllnd_ptlid2str.
298 Description: gmlnd ignored some transmit errors when finalizing lnet messages.
302 Description: ptllnd logs a piece of incorrect debug info in kptllnd_peer_handle_hello.
306 Description: the_lnet.ln_finalizing was not set when the current thread is
307 about to complete messages. It only affects multi-threaded
313 Description: Changed the default kqswlnd ntxmsg=512
318 Description: Assertion failure in kernel ptllnd caused by posting passive
319 bulk buffers before connection establishment complete.
324 Description: A race in kernel ptllnd between deleting a peer and posting
325 new communications for it could hang communications -
326 manifesting as "Unexpectedly long timeout" messages.
331 Description: Kernel ptllnd lock ordering issue could hang a node.
336 Description: node crash on socket teardown race
339 Frequency : 'lctl peer_list' issued on a mx net
341 Description: Enable lctl's peer_list for MXLND
344 Frequency : after Ptllnd timeouts and portals congestion
346 Description: Credit overflows
347 Details : This was a bug in ptllnd connection establishment. The fix
348 implements better peer stamps to disambiguate connection
349 establishment and ensure both peers enter the credit flow
350 state machine consistently.
355 Description: kptllnd didn't propagate some network errors up to LNET
356 Details : This bug was spotted while investigating 11394. The fix
357 ensures network errors on sends and bulk transfers are
358 propagated to LNET/lustre correctly.
360 Severity : enhancement
362 Description: Fixed console chatter in case of -ETIMEDOUT.
364 Severity : enhancement
366 Description: Added D_NETTRACE for recording network packet history
367 (initially only for ptllnd). Also a separate userspace
368 ptllnd facility to gather history which should really be
369 covered by D_NETTRACE too, if only CDEBUG recorded history in
375 Description: o2iblnd handle early RDMA_CM_EVENT_DISCONNECTED.
376 Details : If the fabric is lossy, an RDMA_CM_EVENT_DISCONNECTED
377 callback can occur before a connection has actually been
378 established. This caused an assertion failure previously.
380 Severity : enhancement
382 Description: Multiple instances for o2iblnd
383 Details : Allow multiple instances of o2iblnd to enable networking over
384 multiple HCAs and routing between them.
388 Description: lnet deadlock in router_checker
389 Details : turned ksnd_connd_lock, ksnd_reaper_lock, and ksock_net_t:ksnd_lock
390 into BH locks to eliminate potential deadlock caused by
391 ksocknal_data_ready() preempting code holding these locks.
395 Description: Millions of failed socklnd connection attempts cause a very slow FS
396 Details : added a new route flag ksnr_scheduled to distinguish from
397 ksnr_connecting, so that a peer connection request is only turned
398 down for race concerns when an active connection to the same peer
399 is under progress (instead of just being scheduled).
401 ------------------------------------------------------------------------------
403 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
405 * Support for networks:
406 socklnd - kernels up to 2.6.16
407 qswlnd - Qsnet kernel modules 5.20 and later
408 openiblnd - IbGold 1.8.2
410 viblnd - Voltaire ibhost 3.4.5 and later
411 ciblnd - Topspin 3.2.0
412 iiblnd - Infiniserv 3.3 + PathBits patch
413 gmlnd - GM 2.1.22 and later
414 mxlnd - MX 1.2.1 or later
415 ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x
418 Severity : major on XT3
420 Description: libcfs overwrites /proc/sys/portals
421 Details : libcfs created a symlink from /proc/sys/portals to
422 /proc/sys/lnet for backwards compatibility. This is no
423 longer required and makes the Cray portals /proc variables
428 Description: OFED FMR API change
429 Details : This changes parameter usage to reflect a change in
430 ib_fmr_pool_map_phys() between OFED 1.0 and OFED 1.1. Note
431 that FMR support is only used in experimental versions of the
432 o2iblnd - this change does not affect standard usage at all.
434 Severity : enhancement
436 Description: new ko2iblnd module parameter: ib_mtu
437 Details : the default IB MTU of 2048 performs badly on 23108 Tavor
438 HCAs. You can avoid this problem by setting the MTU to 1024
439 using this module parameter.
441 Severity : enhancement
442 Bugzilla : 11118/11620
443 Description: ptllnd small request message buffer alignment fix
444 Details : Set the PTL_MD_LOCAL_ALIGN8 option on small message receives.
445 Round up small message size on sends in case this option
446 is not supported. 11620 was a defect in the initial
447 implementation which effectively asserted all peers had to be
448 running the correct protocol version which was fixed by always
449 NAK-ing such requests and handling any misalignments they
454 Description: When kib(nal|lnd)_del_peer() is called upon a peer whose
455 ibp_tx_queue is not empty, kib(nal|lnd)_destroy_peer()'s
456 'LASSERT(list_empty(&peer->ibp_tx_queue))' will fail.
458 Severity : enhancement
460 Description: Patchless ZC(zero copy) socklnd
461 Details : New protocol for socklnd, socklnd can support zero copy without
462 kernel patch, it's compatible with old socklnd. Checksum is
463 moved from tunables to modparams.
467 Description: When ksocknal_del_peer() is called upon a peer whose
468 ksnp_tx_queue is not empty, ksocknal_destroy_peer()'s
469 'LASSERT(list_empty(&peer->ksnp_tx_queue))' will fail.
472 Frequency : when ptlrpc is under heavy use and runs out of request buffer
474 Description: In lnet_match_blocked_msg(), md can be used without holding a
478 Frequency : very rarely
480 Description: If ksocknal_lib_setup_sock() fails, a ref on peer is lost.
481 If connd connects a route which has been closed by
482 ksocknal_shutdown(), ksocknal_create_routes() may create new
483 routes which hold references on the peer, causing shutdown
484 process to wait for peer to disappear forever.
486 Severity : enhancement
488 Description: Dump XT3 portals traces on kptllnd timeout
489 Details : Set the kptllnd module parameter "ptltrace_on_timeout=1" to
490 dump Cray portals debug traces to a file. The kptllnd module
491 parameter "ptltrace_basename", default "/tmp/lnet-ptltrace",
492 is the basename of the dump file.
495 Frequency : infrequent
497 Description: kernel ptllnd fix bug in connection re-establishment
498 Details : Kernel ptllnd could produce protocol errors e.g. illegal
499 matchbits and/or violate the credit flow protocol when trying
500 to re-establish a connection with a peer after an error or
503 Severity : enhancement
505 Description: Allow /proc/sys/lnet/debug to be set symbolically
506 Details : Allow debug and subsystem debug values to be read/set by name
507 in addition to numerically, for ease of use.
510 Frequency : only in configurations with LNET routers
512 Description: routes automatically marked down and recovered
513 Details : In configurations with LNET routers if a router fails routers
514 now actively try to recover routes that are down, unless they
515 are marked down by an administrator.
517 ------------------------------------------------------------------------------
519 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
522 Frequency : very rarely, in configurations with LNET routers and TCP
524 Description: incorrect data written to files on OSTs
525 Details : In certain high-load conditions incorrect data may be written
526 to files on the OST when using TCP networks.
528 ------------------------------------------------------------------------------
530 2006-07-31 Cluster File Systems, Inc. <info@clusterfs.com>
532 - rework CDEBUG messages rate-limiting mechanism b=10375
533 - add per-socket tunables for socklnd if the kernel is patched b=10327
535 ------------------------------------------------------------------------------
537 2006-02-15 Cluster File Systems, Inc. <info@clusterfs.com>
539 - fix use of portals/lnet pid to avoid dropping RPCs b=10074
540 - iiblnd wasn't mapping all memory, resulting in comms errors b=9776
541 - quiet LNET startup LNI message for liblustre b=10128
542 - Better console error messages if 'ip2nets' can't match an IP address
543 - Fixed overflow/use-before-set bugs in linux-time.h
544 - Fixed ptllnd bug that wasn't initialising rx descriptors completely
545 - LNET teardown failed an assertion about the route table being empty
546 - Fixed a crash in LNetEQPoll(<invalid handle>)
547 - Future protocol compatibility work (b_rls146_lnetprotovrsn)
548 - improve debug message for liblustre/Catamount nodes (b=10116)
550 2005-10-10 Cluster File Systems, Inc. <info@clusterfs.com>
551 * Configuration change for the XT3
552 The PTLLND is now used to run Lustre over Portals on the XT3.
553 The configure option(s) --with-cray-portals are no longer
554 used. Rather --with-portals=<path-to-portals-includes> is
555 used to enable building on the XT3. In addition to enable
556 XT3 specific features the option --enable-cray-xt3 must be
559 2005-10-10 Cluster File Systems, Inc. <info@clusterfs.com>
560 * Portals has been removed, replaced by LNET.
561 LNET is new networking infrastructure for Lustre, it includes a
562 reorganized network configuration mode (see the user
563 documentation for full details) as well as support for routing
564 between different network fabrics. Lustre Networking Devices
565 (LNDS) for the supported network fabrics have also been created
566 for this new infrastructure.
568 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
573 Frequency : rare (large Voltaire clusters only)
575 Description: the default number of reserved transmit descriptors was too low
576 for some large clusters
577 Details : As a workaround, the number was increased. A proper fix includes
580 2005-06-02 Cluster File Systems, Inc. <info@clusterfs.com>
585 Frequency : occasional (large-scale events, cluster reboot, network failure)
587 Description: too many error messages on console obscure actual problem and
588 can slow down/panic server, or cause recovery to fail repeatedly
589 Details : enable rate-limiting of console error messages, and some messages
590 that were console errors now only go to the kernel log
592 Severity : enhancement
594 Description: add /proc/sys/portals/catastrophe entry which will report if
595 that node has previously LBUGged
597 2005-04-06 Cluster File Systems, Inc. <info@clusterfs.com>
599 - update gmnal to use PTL_MTU, fix module refcounting (b=5786)
601 2005-04-04 Cluster File Systems, Inc. <info@clusterfs.com>
603 - handle error return code in kranal_check_fma_rx() (5915,6054)
605 2005-02-04 Cluster File Systems, Inc. <info@clusterfs.com>
607 - update vibnal (Voltaire IB NAL)
608 - update gmnal (Myrinet NAL), gmnalid
610 2005-02-04 Eric Barton <eeb@bartonsoftware.com>
612 * Landed portals:b_port_step as follows...
614 - removed CFS_DECL_SPIN*
615 just use 'spinlock_t' and initialise with spin_lock_init()
617 - removed CFS_DECL_MUTEX*
618 just use 'struct semaphore' and initialise with init_mutex()
620 - removed CFS_DECL_RWSEM*
621 just use 'struct rw_semaphore' and initialise with init_rwsem()
623 - renamed cfs_sleep_chan -> cfs_waitq
624 cfs_sleep_link -> cfs_waitlink
626 - fixed race in linux version of arch-independent socknal
627 (the ENOMEM/EAGAIN decision).
629 - Didn't fix problems in Darwin version of arch-independent socknal
630 (resetting socket callbacks, eager ack hack, ENOMEM/EAGAIN decision)
632 - removed libcfs types from non-socknal header files (only some types
633 in the header files had been changed; the .c files hadn't been