Hi, seems 5.10.8 still has the ENOSPC issue when compression is used (compress-force=zstd,space_cache=v2):
Jan 27 11:02:14 kernel: [248571.569840] ------------[ cut here ]------------ Jan 27 11:02:14 kernel: [248571.569843] BTRFS: Transaction aborted (error -28) Jan 27 11:02:14 kernel: [248571.569845] BTRFS: error (device dm-0) in add_to_free_space_tree:1039: errno=-28 No space left Jan 27 11:02:14 kernel: [248571.569848] BTRFS info (device dm-0): forced readonly Jan 27 11:02:14 kernel: [248571.569851] BTRFS: error (device dm-0) in add_to_free_space_tree:1039: errno=-28 No space left Jan 27 11:02:14 kernel: [248571.569852] BTRFS: error (device dm-0) in __btrfs_free_extent:3270: errno=-28 No space left Jan 27 11:02:14 kernel: [248571.569854] BTRFS: error (device dm-0) in btrfs_run_delayed_refs:2191: errno=-28 No space left Jan 27 11:02:14 kernel: [248571.569898] WARNING: CPU: 3 PID: 21255 at fs/btrfs/free-space-tree.c:1039 add_to_free_space_tree+0xe8/0x130 Jan 27 11:02:14 kernel: [248571.569913] BTRFS: error (device dm-0) in __btrfs_free_extent:3270: errno=-28 No space left Jan 27 11:02:14 kernel: [248571.569939] Modules linked in: Jan 27 11:02:14 kernel: [248571.569966] BTRFS: error (device dm-0) in btrfs_run_delayed_refs:2191: errno=-28 No space left Jan 27 11:02:14 kernel: [248571.569992] bfq zram bcache crc64 loop dm_crypt xfs dm_mod st sr_mod cdrom nf_tables nfnetlink iptable_filter bridge stp llc intel_powerclamp coretemp k$ Jan 27 11:02:14 kernel: [248571.570075] CPU: 3 PID: 21255 Comm: kworker/u50:22 Tainted: G I 5.10.8 #1 Jan 27 11:02:14 kernel: [248571.570076] Hardware name: Dell Inc. PowerEdge R510/0DPRKF, BIOS 1.13.0 03/02/2018 Jan 27 11:02:14 kernel: [248571.570079] Workqueue: events_unbound btrfs_async_reclaim_metadata_space Jan 27 11:02:14 kernel: [248571.570081] RIP: 0010:add_to_free_space_tree+0xe8/0x130 Jan 27 11:02:14 kernel: [248571.570082] Code: 55 50 f0 48 0f ba aa 40 0a 00 00 02 72 22 83 f8 fb 74 4c 83 f8 e2 74 47 89 c6 48 c7 c7 b8 39 49 82 89 44 24 04 e8 8a 99 4a 00 <0f> 0b 8$ Jan 27 11:02:14 kernel: [248571.570083] RSP: 0018:ffffc90009c57b88 EFLAGS: 00010282 Jan 27 11:02:14 kernel: [248571.570084] RAX: 0000000000000000 RBX: 0000000000004000 RCX: 0000000000000027 Jan 27 11:02:14 kernel: [248571.570085] RDX: 0000000000000027 RSI: 0000000000000004 RDI: ffff888617a58b88 Jan 27 11:02:14 kernel: [248571.570086] RBP: ffff8889ecb874e0 R08: ffff888617a58b80 R09: 0000000000000000 Jan 27 11:02:14 kernel: [248571.570087] R10: 0000000000000001 R11: ffffffff822372e0 R12: 0000005741510000 Jan 27 11:02:14 kernel: [248571.570087] R13: ffff8884e05727e0 R14: ffff88815ae4fc00 R15: ffff88815ae4fdd8 Jan 27 11:02:14 kernel: [248571.570088] FS: 0000000000000000(0000) GS:ffff888617a40000(0000) knlGS:0000000000000000 Jan 27 11:02:14 kernel: [248571.570089] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jan 27 11:02:14 kernel: [248571.570090] CR2: 00007eb4a3a4f00a CR3: 000000000260a005 CR4: 00000000000206e0 Jan 27 11:02:14 kernel: [248571.570091] Call Trace: Jan 27 11:02:14 kernel: [248571.570097] __btrfs_free_extent.isra.0+0x56a/0xa10 Jan 27 11:02:14 kernel: [248571.570100] __btrfs_run_delayed_refs+0x659/0xf20 Jan 27 11:02:14 kernel: [248571.570102] btrfs_run_delayed_refs+0x73/0x200 Jan 27 11:02:14 kernel: [248571.570103] flush_space+0x4e8/0x5e0 Jan 27 11:02:14 kernel: [248571.570105] ? btrfs_get_alloc_profile+0x66/0x1b0 Jan 27 11:02:14 kernel: [248571.570106] ? btrfs_get_alloc_profile+0x66/0x1b0 Jan 27 11:02:14 kernel: [248571.570107] btrfs_async_reclaim_metadata_space+0x107/0x3a0 Jan 27 11:02:14 kernel: [248571.570111] process_one_work+0x1b6/0x350 Jan 27 11:02:14 kernel: [248571.570112] worker_thread+0x50/0x3b0 Jan 27 11:02:14 kernel: [248571.570114] ? process_one_work+0x350/0x350 Jan 27 11:02:14 kernel: [248571.570116] kthread+0xfe/0x140 Jan 27 11:02:14 kernel: [248571.570117] ? kthread_park+0x90/0x90 Jan 27 11:02:14 kernel: [248571.570120] ret_from_fork+0x22/0x30 Jan 27 11:02:14 kernel: [248571.570122] ---[ end trace 568d2f30de65b1c0 ]--- Jan 27 11:02:14 kernel: [248571.570123] BTRFS: error (device dm-0) in add_to_free_space_tree:1039: errno=-28 No space left Jan 27 11:02:14 kernel: [248571.570151] BTRFS: error (device dm-0) in __btrfs_free_extent:3270: errno=-28 No space left Jan 27 11:02:14 kernel: [248571.570178] BTRFS: error (device dm-0) in btrfs_run_delayed_refs:2191: errno=-28 No space left btrfs fi usage: Overall: Device size: 931.49GiB Device allocated: 931.49GiB Device unallocated: 1.00MiB Device missing: 0.00B Used: 786.39GiB Free (estimated): 107.69GiB (min: 107.69GiB) Data ratio: 1.00 Metadata ratio: 1.00 Global reserve: 512.00MiB (used: 0.00B) Multiple profiles: no Data,single: Size:884.48GiB, Used:776.79GiB (87.82%) /dev/mapper/LUKS-RC-a6414fd731ce4f878af44c3987bce533 884.48GiB Metadata,single: Size:47.01GiB, Used:9.59GiB (20.41%) /dev/mapper/LUKS-RC-a6414fd731ce4f878af44c3987bce533 47.01GiB System,single: Size:4.00MiB, Used:144.00KiB (3.52%) /dev/mapper/LUKS-RC-a6414fd731ce4f878af44c3987bce533 4.00MiB Unallocated: /dev/mapper/LUKS-RC-a6414fd731ce4f878af44c3987bce533 1.00MiB Regards, Martin Raiber
