openzfs/zfs

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OpenZFS on Linux and FreeBSD

Stars: 12.5k
Forks: 2k
Open beginner issues: 11
Indexed issues: 1.5k
Avg merge: 3d 2h
Merged PRs (30d): 86

Dominant language: C
License: No license data
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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1,535 open issues indexed

Linux: Ability to access files of all datasets from one mount point Open

Type: Feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

openzfs/zfs#19127 · 1 reaction · Opened Sep 16, 2026
Allow package builds to use configure cache Open

Type: Feature

Difficulty 3/5 1-2 days Newbie friendliness 55/100

openzfs/zfs#19111 · Opened Sep 14, 2026
User Quota not matching du output Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 48/100

openzfs/zfs#19079 · Opened Sep 7, 2026
ZTS: import_relax_metadata_damaged is flaky — the checkpoint does not protect the txg the test requests (~30% failures on FreeBSD) Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 35/100

openzfs/zfs#19077 · Opened Sep 7, 2026
[FreeBSD+WinZFS] OpenZFS issues with case-insensitive filesystems Open

Type: Question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openzfs/zfs#19074 · 7 comments · Opened Sep 6, 2026
The Alpine Linux CI Runner does not pass the ZFS Test Suite (yet) Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 25/100

openzfs/zfs#19052 · 4 comments · Opened Sep 4, 2026
ZTS: create_pool() still missing the rm -rf guard added to the default setups in 0daa27fea Open

Component: Test Suite

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

openzfs/zfs#19049 · 1 comment · Opened Sep 4, 2026
ztest: fishing-mode busy-wait has no yield or timeout; %016lx assumes LP64 Open

Type: Defect

Difficulty 3/5 1-2 days Newbie friendliness 70/100

openzfs/zfs#19048 · 2 comments · Opened Sep 4, 2026
zfs_dedupe_range_copy_memcmp() livelocks if zfs_vnops_read_chunk_size is set to 0 Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

openzfs/zfs#19047 · 1 comment · Opened Sep 4, 2026
zpool clear deadlocks against txg_sync on a multihost pool suspended mid-sync Open

Difficulty 5/5 Over a week Newbie friendliness 32/100

openzfs/zfs#19036 · 1 comment · Opened Sep 2, 2026
zpool clear cannot resume an MMP-suspended pool on a single host: spa_mmp_remote_host_activity() rejects on a timestamp MMP advances itself Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

openzfs/zfs#19033 · 1 comment · Opened Sep 1, 2026
Kernel 7.3-rc1 compatibility with OpenZFS 2.4.4 Open

Type: Defect

Difficulty 3/5 1-2 days Newbie friendliness 68/100

openzfs/zfs#19032 · 2 comments · Opened Sep 1, 2026
Repeated kernel Oops in __wake_up_common from ZFS QAT compression callback Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 25/100

openzfs/zfs#19025 · 2 comments · 1 reaction · Opened Aug 31, 2026
Linux 6.12 / OpenZFS 2.4.3: repeated insert_inode_locked(-EBUSY) assertion in zfs_znode_alloc() on zpl_create Open

Difficulty 5/5 Over a week Newbie friendliness 28/100

openzfs/zfs#19022 · Opened Aug 31, 2026
`zpool clear` hangs indefinitely after attempting to resume a suspended pool Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 45/100

openzfs/zfs#19020 · 1 comment · Opened Aug 30, 2026
`zdb -B -w` aborts with `VERIFY3U(dp->dp_spa->spa_errata, !=, 0)` failure in `dsl_crypto_populate_key_nvlist()` when extracting from an encrypted dataset via offline pool import Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openzfs/zfs#19018 · 1 comment · Opened Aug 30, 2026
Build fix for Linux kernel 6.12.95 (probably all 6.12.x) - patch Open

Type: Defect

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

openzfs/zfs#19012 · Opened Aug 28, 2026
ICP should have Power-On Self-Tests Open

Component: Encryption Type: Feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

openzfs/zfs#19011 · 1 reaction · Opened Aug 28, 2026
Import zstd BMI2 probe fix Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openzfs/zfs#19007 · 9 comments · Opened Aug 28, 2026
Severe I/O delays during zvol page cache writeback Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 25/100

openzfs/zfs#18995 · 7 comments · Opened Aug 26, 2026
ZFS 2.4.4 (and master) not working on Riscv64 with Linux 7.1.10 Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openzfs/zfs#18989 · Opened Aug 25, 2026
Enhancement: Capture and display stderr from 'net usershare' on sharesmb failure Open

Type: Feature

Difficulty 3/5 1-2 days Newbie friendliness 68/100

openzfs/zfs#18987 · 1 reaction · Opened Aug 25, 2026
Four kernel faults in ZFS across write, read, and buffer-teardown paths — count/pointer fields read as garbage (spa_taskq_dispatch x2, LZ4_uncompress infinite loop, memcg deref under dbuf_evict), ZFS 2.3.0 and 2.3.4 Open

Difficulty 5/5 Over a week Newbie friendliness 28/100

openzfs/zfs#18984 · 12 comments · 1 reaction · Opened Aug 24, 2026
zfs receive accepts target dataset name ending in /., creates dataset literally named ., which later becomes unmanageable (self reference, '.' is found in name) Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 55/100

openzfs/zfs#18975 · Opened Aug 23, 2026
old config.guess doesn't recognize loongarch64 on alpinelinux Open

Type: Defect

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

openzfs/zfs#18973 · Opened Aug 23, 2026
zloop.sh reports every iteration as a crash when run unprivileged with a piped core_pattern Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

openzfs/zfs#18966 · Opened Aug 21, 2026
VERIFY3S(remove_reference(hdr, hdr), >, 0) failed — PANIC at arc.c:7026:arc_write_done() (zfs-2.4.3) Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 30/100

openzfs/zfs#18955 · Opened Aug 19, 2026
rpm builds from git generate problematic version strings. Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 25/100

openzfs/zfs#18953 · Opened Aug 19, 2026
Non-standard sh and awk syntax in vdev_id script Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 52/100

openzfs/zfs#18945 · Opened Aug 18, 2026
make rpm / deb: undefined reference to `lzc_send_progress' Open

Type: Defect

Difficulty 3/5 1-2 days Newbie friendliness 67/100

openzfs/zfs#18944 · 3 comments · Opened Aug 18, 2026
zpool import hangs indefinitely txg_wait_synced Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 32/100

openzfs/zfs#18943 · 2 comments · 2 reactions · Opened Aug 18, 2026
Kernel NULL pointer dereference in vdev_indirect_mapping_duplicate_adjacent_entries() from txg_sync, on a pool with an indirect vdev Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openzfs/zfs#18930 · Opened Aug 15, 2026
Kernel oops: length underflow in zfs_fillpage → runaway memset (mmap read racing truncate under memcg OOM pressure), host hang Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 25/100

openzfs/zfs#18924 · 1 comment · Opened Aug 13, 2026
Faulted Hotspare loses error state when detached from vdev Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 55/100

openzfs/zfs#18916 · Opened Aug 12, 2026
Add option in zdb to ignore checksum failures with -r Open

Type: Feature

Difficulty 5/5 Over a week Newbie friendliness 45/100

openzfs/zfs#18915 · Opened Aug 12, 2026
zfs send -L is silently ignored when the source dataset has never contained large blocks, making reversed replication impossible Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 48/100

openzfs/zfs#18908 · Opened Aug 10, 2026
Kernel oops on importing after upgrading from linux 6.12.96 to 6.18.38 Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 48/100

openzfs/zfs#18900 · 6 comments · Opened Aug 7, 2026
zpool remove of a failing log device hangs unkillably in zil_parse() (still reproducing on 2.4.3; follow-up to #1585) Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 35/100

openzfs/zfs#18894 · 2 comments · Opened Aug 5, 2026
Large recordsize causes ARC self-thrashing and artificially high system memory pressure Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 35/100

openzfs/zfs#18893 · 3 comments · 1 reaction · Opened Aug 4, 2026
Improve performance by listing snapshots a batch at a time Open

Type: Performance

Difficulty 5/5 Over a week Newbie friendliness 38/100

openzfs/zfs#18849 · 3 comments · Opened Jul 27, 2026
GPF in Proxmox kernel 7.0.14 (ZoL 2.4.3) Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 25/100

openzfs/zfs#18816 · 3 comments · Opened Jul 16, 2026
Memory corruption leads to system crash (ZFS 2.4.3 on Linux 7.0.14) Open

Type: Defect

openzfs/zfs#18787 · 7 comments · 1 assignee · Opened Jul 12, 2026
OpenZFS 2.4.2: NULL dereference in buf_hash_remove() from arc_evict causes permanent spa_namespace_enter hangs Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 35/100

openzfs/zfs#18782 · 17 comments · Opened Jul 10, 2026
dnf tries to "update" to older zfs branch to support newer kernels Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 45/100

openzfs/zfs#18767 · 5 comments · 6 reactions · Opened Jul 8, 2026
zvol resize can mark mounted bdev dead via DISK_EVENT_MEDIA_CHANGE Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

openzfs/zfs#18758 · 1 comment · Opened Jul 8, 2026
kernel BUG at mm/vmalloc.c:3212 on 7.0.11-76070011-generic (System76 kernel) — zfs 2.4.1 Open

Status: Feedback requested

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openzfs/zfs#18731 · 3 comments · Opened Jul 1, 2026
Intermittent boot hang in zfs-mount.service with txg_sync blocked in zio_wait() after successful pool import Open

Type: Defect

Difficulty 5/5 Over a week Newbie friendliness 30/100

openzfs/zfs#18729 · 25 comments · 1 reaction · Opened Jul 1, 2026
RAIDZ expansion completed, but DSL space accounting (zfs list AVAIL) remains significantly lower than expected usable capacity Open

Type: Defect

Difficulty 4/5 3-5 days Newbie friendliness 48/100

openzfs/zfs#18711 · 2 comments · 1 reaction · Opened Jun 29, 2026
"Harmonize Local ZFS ACL and Samba Shared Folder Permissions" Open

Type: Feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

openzfs/zfs#18698 · 3 comments · 1 reaction · Opened Jun 23, 2026
Upgraded 'redundant_metadata=all' with Special Device Open

Type: Feature

Difficulty 5/5 Over a week Newbie friendliness 38/100

openzfs/zfs#18692 · 4 comments · 3 reactions · Opened Jun 20, 2026

openzfs/zfs

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