zio: update ZIO type x stage documentation

- add column for TRIM ZIOs
- remove R from ZIO_STAGE_ISSUE_ASYNC, never happened
- remove I from ZIO_STAGE_VDEV_IO_DONE, never happened

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed by: Brian Behlendorf <[email protected]>
Signed-off-by: Rob Norris <[email protected]>
Closes #15959 

1 files changed, 29 insertions, 28 deletions

diff --git a/man/man8/zpool-events.8 b/man/man8/zpool-events.8
index e1436f6de..a7a9e3344 100644
--- a/man/man8/zpool-events.8
+++ b/man/man8/zpool-events.8
@@ -25,8 +25,9 @@
 .\" Copyright (c) 2018 George Melikov. All Rights Reserved.
 .\" Copyright 2017 Nexenta Systems, Inc.
 .\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
+.\" Copyright (c) 2024, Klara Inc.
 .\"
-.Dd July 11, 2023
+.Dd February 28, 2024
 .Dt ZPOOL-EVENTS 8
 .Os
 .
@@ -363,7 +364,7 @@ that is, the bits set in the good data which are cleared in the bad data.
 .Sh I/O STAGES
 The ZFS I/O pipeline is comprised of various stages which are defined below.
 The individual stages are used to construct these basic I/O
-operations: Read, Write, Free, Claim, and Ioctl.
+operations: Read, Write, Free, Claim, Ioctl and Trim.
 These stages may be
 set on an event to describe the life cycle of a given I/O request.
 .Pp
@@ -372,43 +373,43 @@ tab(:);
 l l l .
 Stage:Bit Mask:Operations
 _:_:_
-ZIO_STAGE_OPEN:0x00000001:RWFCI
+ZIO_STAGE_OPEN:0x00000001:RWFCIT
 
-ZIO_STAGE_READ_BP_INIT:0x00000002:R----
-ZIO_STAGE_WRITE_BP_INIT:0x00000004:-W---
-ZIO_STAGE_FREE_BP_INIT:0x00000008:--F--
-ZIO_STAGE_ISSUE_ASYNC:0x00000010:RWF--
-ZIO_STAGE_WRITE_COMPRESS:0x00000020:-W---
+ZIO_STAGE_READ_BP_INIT:0x00000002:R-----
+ZIO_STAGE_WRITE_BP_INIT:0x00000004:-W----
+ZIO_STAGE_FREE_BP_INIT:0x00000008:--F---
+ZIO_STAGE_ISSUE_ASYNC:0x00000010:-WF--T
+ZIO_STAGE_WRITE_COMPRESS:0x00000020:-W----
 
-ZIO_STAGE_ENCRYPT:0x00000040:-W---
-ZIO_STAGE_CHECKSUM_GENERATE:0x00000080:-W---
+ZIO_STAGE_ENCRYPT:0x00000040:-W----
+ZIO_STAGE_CHECKSUM_GENERATE:0x00000080:-W----
 
-ZIO_STAGE_NOP_WRITE:0x00000100:-W---
+ZIO_STAGE_NOP_WRITE:0x00000100:-W----
 
-ZIO_STAGE_BRT_FREE:0x00000200:--F--
+ZIO_STAGE_BRT_FREE:0x00000200:--F---
 
-ZIO_STAGE_DDT_READ_START:0x00000400:R----
-ZIO_STAGE_DDT_READ_DONE:0x00000800:R----
-ZIO_STAGE_DDT_WRITE:0x00001000:-W---
-ZIO_STAGE_DDT_FREE:0x00002000:--F--
+ZIO_STAGE_DDT_READ_START:0x00000400:R-----
+ZIO_STAGE_DDT_READ_DONE:0x00000800:R-----
+ZIO_STAGE_DDT_WRITE:0x00001000:-W----
+ZIO_STAGE_DDT_FREE:0x00002000:--F---
 
-ZIO_STAGE_GANG_ASSEMBLE:0x00004000:RWFC-
-ZIO_STAGE_GANG_ISSUE:0x00008000:RWFC-
+ZIO_STAGE_GANG_ASSEMBLE:0x00004000:RWFC--
+ZIO_STAGE_GANG_ISSUE:0x00008000:RWFC--
 
-ZIO_STAGE_DVA_THROTTLE:0x00010000:-W---
-ZIO_STAGE_DVA_ALLOCATE:0x00020000:-W---
-ZIO_STAGE_DVA_FREE:0x00040000:--F--
-ZIO_STAGE_DVA_CLAIM:0x00080000:---C-
+ZIO_STAGE_DVA_THROTTLE:0x00010000:-W----
+ZIO_STAGE_DVA_ALLOCATE:0x00020000:-W----
+ZIO_STAGE_DVA_FREE:0x00040000:--F---
+ZIO_STAGE_DVA_CLAIM:0x00080000:---C--
 
-ZIO_STAGE_READY:0x00100000:RWFCI
+ZIO_STAGE_READY:0x00100000:RWFCIT
 
-ZIO_STAGE_VDEV_IO_START:0x00200000:RW--I
-ZIO_STAGE_VDEV_IO_DONE:0x00400000:RW--I
-ZIO_STAGE_VDEV_IO_ASSESS:0x00800000:RW--I
+ZIO_STAGE_VDEV_IO_START:0x00200000:RW--IT
+ZIO_STAGE_VDEV_IO_DONE:0x00400000:RW---T
+ZIO_STAGE_VDEV_IO_ASSESS:0x00800000:RW--IT
 
-ZIO_STAGE_CHECKSUM_VERIFY:0x01000000:R----
+ZIO_STAGE_CHECKSUM_VERIFY:0x01000000:R-----
 
-ZIO_STAGE_DONE:0x02000000:RWFCI
+ZIO_STAGE_DONE:0x02000000:RWFCIT
 .TE
 .
 .Sh I/O FLAGS