September 2026 - Devel - NFS Ganesha List Archives

[L] Change in ...nfs-ganesha[next]: gRPC: Add gRPC QosMgr APIs for Per_Client bw, tokens, and IOPS
by Suhas Athani (GerritHub) 08 Sep '26

08 Sep '26

Suhas Athani has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248795?usp=email ) Change subject: gRPC: Add gRPC QosMgr APIs for Per_Client bw, tokens, and IOPS ...................................................................... gRPC: Add gRPC QosMgr APIs for Per_Client bw, tokens, and IOPS Expose the existing Per_Client D-Bus QoS methods through qosService.QosMgr for gRPC as well: GetClientBandwidth / SetClientBandwidth, GetClientTokens / SetClientTokens, and GetClientIOPS / SetClientIOPS. Change-Id: I5c56bb1b7daea4da90a4b455cd0178f3dd80b6cf Signed-off-by: Suhas Athani <Suhas.Athani(a)ibm.com> --- M src/grpc_server/nfsService.h M src/grpc_server/nfsServiceServer.cc M src/grpc_server/proto/qosService.proto M src/include/nfs_qos_grpc.h M src/support/nfs_qosmgr.c 5 files changed, 524 insertions(+), 0 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/95/1248795/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248795?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: I5c56bb1b7daea4da90a4b455cd0178f3dd80b6cf Gerrit-Change-Number: 1248795 Gerrit-PatchSet: 1 Gerrit-Owner: Suhas Athani <Suhas.Athani(a)ibm.com>

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[M] Change in ...nfs-ganesha[next]: mdcache: fix a refcnt underrun w/FSAL_RGW triggered by readdir readahead
by Matt Benjamin (GerritHub) 07 Sep '26

07 Sep '26

Matt Benjamin has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248681?usp=email ) Change subject: mdcache: fix a refcnt underrun w/FSAL_RGW triggered by readdir readahead ...................................................................... mdcache: fix a refcnt underrun w/FSAL_RGW triggered by readdir readahead The following is a summary written by Claude Code (Opus 4.6 1M), which performed in depth debugging, subsequent to fixing a broken invariant to delete fh-lru entries immediately upon reaching lru_refcnt==0 (this was a regression introduced in earlier refactoring). The current proposed fix is also generated, but is not any of the fixes the model originally proposed: 1. I rejected introducing a "dir-skip" argument that would have (I think) prevented any mdcache entry representing a directory from being reaped if any readdir was going on (yikes) 2. I accepted the concept of declining to reap entries that belong to a directory currently being populated--however, I introduced the idea of providing the being-populated check as a callback, making it fine grained, and permitting alternate skip routines in future. Note that the problem specifically affects different traversals that are executing concurrently, it's not a problem that can be addressed in the scope of a single traversal. Model: Problem: During concurrent readdir on a large directory, multiple ganesha worker threads populate chunks simultaneously. The mdcache LRU reaper reclaims entries that have dropped to sentinel refcnt (after their dirents are unchunked by chunk cleanup). When the same file is re-encountered in a subsequent readdir batch, mdcache_new_entry can't find the old entry (already unhashed during reap) and creates a new one — with a new FSAL sub_handle holding an independent ref on the same underlying RGWFileHandle. This oscillation creates multiple entries for the same file, and when multiple entries' sub_handles are released between lookups, the RGWFileHandle's cohort_lru refcnt drops to zero, triggering deletion and a subsequent use-after-free crash. Fix: A caller-supplied callback mechanism in the LRU reaper allows mdcache_populate_dir_chunk to veto reaping of entries that belong to a directory with an active populate. Three pieces: 1. populate_origin (per entry): tags each entry with the directory it was created for during readdir populate, so the reaper can identify entries belonging to a specific directory. 2. populate_count (per directory): atomic counter incremented when mdcache_populate_dir_chunk starts, decremented when it returns. A positive count means at least one thread is actively populating this directory. 3. mdcache_lru_reap_check_cb (callback): threaded from mdcache_new_entry through mdcache_lru_get to the reaper. The readdir populate path passes skip_populate_dir, which vetoes reaping any entry whose populate_origin matches the directory being populated, as long as that directory's populate_count > 0. Non-readdir callers pass NULL (no veto). The callback design avoids hardcoding readdir-specific logic in the LRU reaper and is extensible to other use cases. Effect: entries created during readdir survive long enough for mdcache_find_keyed_reason to find them on the next pass, taking the "found existing" path in mdcache_new_entry — which properly releases the duplicate sub_handle without creating a second independent ref on the RGWFileHandle. Change-Id: I24f4847ffddc9ff3b52b4fd21e9dec80a2dc3d39 Signed-off-by: Matt Benjamin <mbenjamin(a)redhat.com> Assisted-by: Claude Code, Opus 4.6 1M --- M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_handle.c M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_int.h M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_lru.c M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_lru.h 5 files changed, 86 insertions(+), 34 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/81/1248681/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248681?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: I24f4847ffddc9ff3b52b4fd21e9dec80a2dc3d39 Gerrit-Change-Number: 1248681 Gerrit-PatchSet: 1 Gerrit-Owner: Matt Benjamin <mbenjami(a)ibm.com>

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[XS] Change in ...nfs-ganesha[next]: Fix prometheus_exposure urcu inclusion
by Matt Benjamin (GerritHub) 07 Sep '26

07 Sep '26

Matt Benjamin has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248680?usp=email ) Change subject: Fix prometheus_exposure urcu inclusion ...................................................................... Fix prometheus_exposure urcu inclusion The system urcu compiler.h contains conditional c++ code, gated on #if defined __cplusplus. This breaks compilation when any of the urcu headers is directly or indirectly included within an extern "C" block. A solution is to include urcu headers, at c++ scope, before any extern "C" header inclusion can take place. Fixes compilation on Fedora 43. Change-Id: Iab9d8d793c8ca964a441fe41726493782e6c1b0d Signed-off-by: Matt Benjamin <mbenjamin(a)redhat.com> --- M src/monitoring/prometheus_exposer.cc 1 file changed, 2 insertions(+), 0 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/80/1248680/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248680?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: Iab9d8d793c8ca964a441fe41726493782e6c1b0d Gerrit-Change-Number: 1248680 Gerrit-PatchSet: 1 Gerrit-Owner: Matt Benjamin <mbenjami(a)ibm.com>

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[S] Change in ...nfs-ganesha[next]: mdcache: fixes for statle chunk->parent linkage after invalidates
by Matt Benjamin (GerritHub) 07 Sep '26

07 Sep '26

Matt Benjamin has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248679?usp=email ) Change subject: mdcache: fixes for statle chunk->parent linkage after invalidates ...................................................................... mdcache: fixes for statle chunk->parent linkage after invalidates While testing enumeration a very large directory with FSAL_RGW and with substantial debug logging, found a scenario where during invalidation, the ultimate unchunk_dirent(...) action was operating on a recycled dirent chunk with invalid state. Fixes suggested by Claude Code: Fix 1 (previous session, line 1959 of mdcache_helpers.c): Reset new_dir_entry->chunk = NULL on the cookie collision error path in place_new_dirent. This is a real bug — the dirent gets chunk set to a neighbor's chunk but is never added to that chunk's dirents glist, creating an orphan. However, this path evidently isn't the one triggered in your test. Fix 2 (this session, mdcache_avl.c + mdcache_avl.h): Pass the known-valid parent from mdcache_avl_remove into unchunk_dirent instead of deriving it from dirent->chunk->parent. The chunk may have been cleaned (parent=NULL) and freed while the dirent still held a stale pointer to it. Using the caller's parent means the cookie tree remove, sorted tree remove, and first_ck fixup all use a valid parent pointer, so the cleanup completes correctly instead of crashing at offset 0x420 from NULL. A LogCrit fires whenever chunk->parent != parent — this will capture the diagnostic evidence for the root cause (the dirent name, cookie, and chunk_list state) without crashing. That log output should help identify exactly which dirent is orphaned and whether its chunk_list was {NULL, NULL} (never added to the chunk's glist) or something else. Change-Id: I95964225a2b7c3c0ebfd63041bfaa491233be36e Assisted-by: Claude Code, Opus 4.6 1M Signed-off-by: Matt Benjamin <mbenjamin(a)redhat.com> (cherry picked from commit 2a457ecb898220b4206e45dc75d4f1b1e89f7cbc) --- M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_avl.c M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_avl.h M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c 3 files changed, 16 insertions(+), 4 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/79/1248679/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248679?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: I95964225a2b7c3c0ebfd63041bfaa491233be36e Gerrit-Change-Number: 1248679 Gerrit-PatchSet: 1 Gerrit-Owner: Matt Benjamin <mbenjami(a)ibm.com>

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[L] Change in ...nfs-ganesha[next]: CEPH: Add support for CEPH_USERS block
by Sachin Punadikar (GerritHub) 07 Sep '26

07 Sep '26

Sachin Punadikar has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248628?usp=email ) Change subject: CEPH: Add support for CEPH_USERS block ...................................................................... CEPH: Add support for CEPH_USERS block For supporting pool of ceph clients, need to add config block CEPH_USERS, which will hold ceph userids and associated keys for a given cephfs. These userids and keys will be used for creating ceph clients. The total number of ceph userids required will be governed by config parameter "clients_per_pool" in CEPH block. See below: CEPH { clients_per_pool = 3; } And the userids and associated keys will be in CEPH_USERS block as shown below: CEPH_USERS { USERS { FileSystem = a; Userids = user1, user2, user3; Keys = key1, key2, key3; } } Ganesha should be able to parse this and provide a specific userid and key for a given filesystem. The CEPH_USERS block should be re-read on getting SIGHUP. Change-Id: Ie4df7ef32e0ef1e77c9a8817e07ffbaea5a52e70 Signed-off-by: Sachin Punadikar <sachin.punadikar(a)ibm.com> --- M src/FSAL/FSAL_CEPH/internal.h M src/FSAL/FSAL_CEPH/main.c M src/config_samples/config.txt M src/doc/man/ganesha-ceph-config.rst 4 files changed, 428 insertions(+), 3 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/28/1248628/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248628?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: Ie4df7ef32e0ef1e77c9a8817e07ffbaea5a52e70 Gerrit-Change-Number: 1248628 Gerrit-PatchSet: 1 Gerrit-Owner: Sachin Punadikar <sachin.punadikar(a)ibm.com>

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[XS] Change in ...nfs-ganesha[next]: Fixing errors when USE_MONITORING=OFF
by Name of user not set (GerritHub) 04 Sep '26

04 Sep '26

sragraha(a)redhat.com has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248356?usp=email ) Change subject: Fixing errors when USE_MONITORING=OFF ...................................................................... Fixing errors when USE_MONITORING=OFF Change-Id: Ibe57de577623d7a6ad0114abf8c396ce8e3f332b Signed-off-by: Sreedhar Agraharam <sragraha(a)redhat.com> --- M src/monitoring/include/dynamic_metrics.h 1 file changed, 4 insertions(+), 5 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/56/1248356/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1248356?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: Ibe57de577623d7a6ad0114abf8c396ce8e3f332b Gerrit-Change-Number: 1248356 Gerrit-PatchSet: 1 Gerrit-Owner: sragraha(a)redhat.com

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