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zio: update ZIO type x stage documentation

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- 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 <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #15959
This commit is contained in:
Rob N
2024-03-22 06:10:04 +11:00
committed by GitHub
parent c9d8f6c59a
commit 5c4a4f82c8
2 changed files with 58 additions and 55 deletions
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include/sys/zio_impl.h
+29 -27
View File
@@ -25,6 +25,7 @@
/*
* Copyright (c) 2012, 2015 by Delphix. All rights reserved.
* Copyright (c) 2024, Klara Inc.
*/
#ifndef _ZIO_IMPL_H
@@ -39,7 +40,7 @@ extern "C" {
*
* The ZFS I/O pipeline is comprised of various stages which are defined
* in the zio_stage enum below. The individual stages are used to construct
* these basic I/O operations: Read, Write, Free, Claim, and Ioctl.
* these basic I/O operations: Read, Write, Free, Claim, Ioctl and Trim.
*
* I/O operations: (XXX - provide detail for each of the operations)
*
@@ -48,6 +49,7 @@ extern "C" {
* Free:
* Claim:
* Ioctl:
* Trim:
*
* Although the most common pipeline are used by the basic I/O operations
* above, there are some helper pipelines (one could consider them
@@ -120,43 +122,43 @@ extern "C" {
* zio pipeline stage definitions
*/
enum zio_stage {
ZIO_STAGE_OPEN = 1 << 0, /* RWFCI */
ZIO_STAGE_OPEN = 1 << 0, /* RWFCIT */
ZIO_STAGE_READ_BP_INIT = 1 << 1, /* R---- */
ZIO_STAGE_WRITE_BP_INIT = 1 << 2, /* -W--- */
ZIO_STAGE_FREE_BP_INIT = 1 << 3, /* --F-- */
ZIO_STAGE_ISSUE_ASYNC = 1 << 4, /* RWF-- */
ZIO_STAGE_WRITE_COMPRESS = 1 << 5, /* -W--- */
ZIO_STAGE_READ_BP_INIT = 1 << 1, /* R----- */
ZIO_STAGE_WRITE_BP_INIT = 1 << 2, /* -W---- */
ZIO_STAGE_FREE_BP_INIT = 1 << 3, /* --F--- */
ZIO_STAGE_ISSUE_ASYNC = 1 << 4, /* -WF--T */
ZIO_STAGE_WRITE_COMPRESS = 1 << 5, /* -W---- */
ZIO_STAGE_ENCRYPT = 1 << 6, /* -W--- */
ZIO_STAGE_CHECKSUM_GENERATE = 1 << 7, /* -W--- */
ZIO_STAGE_ENCRYPT = 1 << 6, /* -W---- */
ZIO_STAGE_CHECKSUM_GENERATE = 1 << 7, /* -W---- */
ZIO_STAGE_NOP_WRITE = 1 << 8, /* -W--- */
ZIO_STAGE_NOP_WRITE = 1 << 8, /* -W---- */
ZIO_STAGE_BRT_FREE = 1 << 9, /* --F-- */
ZIO_STAGE_BRT_FREE = 1 << 9, /* --F--- */
ZIO_STAGE_DDT_READ_START = 1 << 10, /* R---- */
ZIO_STAGE_DDT_READ_DONE = 1 << 11, /* R---- */
ZIO_STAGE_DDT_WRITE = 1 << 12, /* -W--- */
ZIO_STAGE_DDT_FREE = 1 << 13, /* --F-- */
ZIO_STAGE_DDT_READ_START = 1 << 10, /* R----- */
ZIO_STAGE_DDT_READ_DONE = 1 << 11, /* R----- */
ZIO_STAGE_DDT_WRITE = 1 << 12, /* -W---- */
ZIO_STAGE_DDT_FREE = 1 << 13, /* --F--- */
ZIO_STAGE_GANG_ASSEMBLE = 1 << 14, /* RWFC- */
ZIO_STAGE_GANG_ISSUE = 1 << 15, /* RWFC- */
ZIO_STAGE_GANG_ASSEMBLE = 1 << 14, /* RWFC-- */
ZIO_STAGE_GANG_ISSUE = 1 << 15, /* RWFC-- */
ZIO_STAGE_DVA_THROTTLE = 1 << 16, /* -W--- */
ZIO_STAGE_DVA_ALLOCATE = 1 << 17, /* -W--- */
ZIO_STAGE_DVA_FREE = 1 << 18, /* --F-- */
ZIO_STAGE_DVA_CLAIM = 1 << 19, /* ---C- */
ZIO_STAGE_DVA_THROTTLE = 1 << 16, /* -W---- */
ZIO_STAGE_DVA_ALLOCATE = 1 << 17, /* -W---- */
ZIO_STAGE_DVA_FREE = 1 << 18, /* --F--- */
ZIO_STAGE_DVA_CLAIM = 1 << 19, /* ---C-- */
ZIO_STAGE_READY = 1 << 20, /* RWFCI */
ZIO_STAGE_READY = 1 << 20, /* RWFCIT */
ZIO_STAGE_VDEV_IO_START = 1 << 21, /* RW--I */
ZIO_STAGE_VDEV_IO_DONE = 1 << 22, /* RW--I */
ZIO_STAGE_VDEV_IO_ASSESS = 1 << 23, /* RW--I */
ZIO_STAGE_VDEV_IO_START = 1 << 21, /* RW--IT */
ZIO_STAGE_VDEV_IO_DONE = 1 << 22, /* RW---T */
ZIO_STAGE_VDEV_IO_ASSESS = 1 << 23, /* RW--IT */
ZIO_STAGE_CHECKSUM_VERIFY = 1 << 24, /* R---- */
ZIO_STAGE_CHECKSUM_VERIFY = 1 << 24, /* R----- */
ZIO_STAGE_DONE = 1 << 25 /* RWFCI */
ZIO_STAGE_DONE = 1 << 25 /* RWFCIT */
};
#define ZIO_ROOT_PIPELINE \