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Brian Behlendorf a032ac4b38 OpenZFS 8558, 8602 - lwp_create() returns EAGAIN
8558 lwp_create() returns EAGAIN on system with more than 80K ZFS filesystems

On a system with more than 80K ZFS filesystems, we've seen cases
where lwp_create() will start to fail by returning EAGAIN. The
problem being, for each of those 80K ZFS filesystems, a taskq will
be created for each dataset as part of the ZIL for each dataset.

Porting Notes:
- The new nomem taskq kstat was dropped.
- Added module options and documentation for new tunings
  zfs_zil_clean_taskq_nthr_pct, zfs_zil_clean_taskq_minalloc,
  zfs_zil_clean_taskq_maxalloc, and zfs_sync_taskq_batch_pct.

Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Sebastien Roy <sebastien.roy@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Authored by: Prakash Surya <prakash.surya@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Chris Dunlop <chris@onthe.net.au>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/8558
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/216d772

8602 remove unused "dp_early_sync_tasks" field from "dsl_pool" structure

Reviewed by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Authored by: Prakash Surya <prakash.surya@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Chris Dunlop <chris@onthe.net.au>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/8602
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/2bcb545
Closes #6779
2017-10-26 12:57:53 -07:00
.github commitcheck: Multiple OpenZFS ports in commit 2017-10-26 10:23:58 -07:00
cmd Added no_scrub_restart flag to zpool reopen 2017-10-26 12:26:09 -07:00
config Support integration with new QAT products 2017-10-20 11:11:25 -07:00
contrib Post-Encryption Followup 2017-10-13 10:02:39 -07:00
etc vdev_id: extension for new scsi topology 2017-09-27 10:39:47 -07:00
include OpenZFS 8558, 8602 - lwp_create() returns EAGAIN 2017-10-26 12:57:53 -07:00
lib Added no_scrub_restart flag to zpool reopen 2017-10-26 12:26:09 -07:00
man OpenZFS 8558, 8602 - lwp_create() returns EAGAIN 2017-10-26 12:57:53 -07:00
module OpenZFS 8558, 8602 - lwp_create() returns EAGAIN 2017-10-26 12:57:53 -07:00
rpm Add DKMS package on Debian-based distributions 2017-10-15 13:00:44 -07:00
scripts commitcheck: Multiple OpenZFS ports in commit 2017-10-26 10:23:58 -07:00
tests Added no_scrub_restart flag to zpool reopen 2017-10-26 12:26:09 -07:00
udev Fix spelling 2017-01-03 11:31:18 -06:00
.gitignore Add configure option to enable gcov analysis 2017-09-15 10:24:13 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
AUTHORS Add a missing > to AUTHORS 2014-09-02 14:18:53 -07:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Added no_scrub_restart flag to zpool reopen 2017-10-26 12:26:09 -07:00
copy-builtin Allow c99 when building ZFS in the kernel tree 2017-03-27 12:31:15 -07:00
COPYRIGHT Encryption patch follow-up 2017-10-11 16:54:48 -04:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
Makefile.am Add DKMS package on Debian-based distributions 2017-10-15 13:00:44 -07:00
META Tag zfs-0.7.0 2017-07-26 10:13:25 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Update codecov.yml 2017-09-22 18:54:34 -07:00
TEST Run ztest for longer on "Coverage" builders 2017-09-26 12:29:32 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

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ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.

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