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OpenZFS 6531 - Provide mechanism to artificially limit disk performance

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Reviewed by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Ported by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/6531
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/97e8130

Porting notes:
- Added new IO delay tracepoints, and moved common ZIO tracepoint macros
  to a new trace_common.h file.
- Used zio_delay_taskq() in place of OpenZFS's timeout_generic() function.
- Updated zinject man page
- Updated zpool_scrub test files
This commit is contained in:
Tony Hutter
2016-05-23 10:41:29 -07:00
committed by Brian Behlendorf
parent 7e945072d1
commit 26ef0cc7db
18 changed files with 681 additions and 121 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/vdev_file.c
+4 -2
View File
@@ -20,7 +20,7 @@
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2011, 2015 by Delphix. All rights reserved.
*/
#include <sys/zfs_context.h>
@@ -159,7 +159,7 @@ vdev_file_io_strategy(void *arg)
if (resid != 0 && zio->io_error == 0)
zio->io_error = SET_ERROR(ENOSPC);
zio_interrupt(zio);
zio_delay_interrupt(zio);
}
static void
@@ -217,6 +217,8 @@ vdev_file_io_start(zio_t *zio)
return;
}
zio->io_target_timestamp = zio_handle_io_delay(zio);
VERIFY3U(taskq_dispatch(system_taskq, vdev_file_io_strategy, zio,
TQ_SLEEP), !=, 0);
}