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NEX-6088 ZFS scrub/resilver take excessively long due to issuing lots of random IO (reverting a mismerge in zpool-features.5)
NEX-6088 ZFS scrub/resilver take excessively long due to issuing lots of random IO
Reviewed by: Roman Strashkin <roman.strashkin@nexenta.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
NEX-6197 Description of feature@wbc is incorrect
Reviewed by: Alex Aizman <alex.aizman@nexenta.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
NEX-4584 System panic when adding special vdev to a pool that does not support feature flags
Reviewed by: Alex Aizman <alex.aizman@nexenta.com>
Reviewed by: Josef 'Jeff' Sipek <josef.sipek@nexenta.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Reviewed by: Steve Peng <steve.peng@nexenta.com>
NEX-5795 Rename 'wrc' as 'wbc' in the source and in the tech docs
Reviewed by: Alex Aizman <alex.aizman@nexenta.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
Reviewed by: Alek Pinchuk <alek.pinchuk@nexenta.com>
4185 add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R (fix studio build)
4185 add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Garrett D'Amore <garrett@damore.org>
NEX-4476 WRC: Allow to use write back cache per tree of datasets
Reviewed by: Alek Pinchuk <alek.pinchuk@nexenta.com>
Reviewed by: Alex Aizman <alex.aizman@nexenta.com>
Revert "NEX-4476 WRC: Allow to use write back cache per tree of datasets"
This reverts commit fe97b74444278a6f36fec93179133641296312da.
NEX-4476 WRC: Allow to use write back cache per tree of datasets
Reviewed by: Alek Pinchuk <alek.pinchuk@nexenta.com>
Reviewed by: Alex Aizman <alex.aizman@nexenta.com>
SUP-817 Removed references to special device from man and help
Revert "SUP-817 Removed references to special device"
This reverts commit f8970e28f0d8bd6b69711722f341e3e1d0e1babf.
SUP-817 Removed references to special device
4370 avoid transmitting holes during zfs send
4371 DMU code clean up
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Garrett D'Amore <garrett@damore.org>
OS-102 add man page info and tests for vdev/CoS properties and ZFS meta features
@@ -363,10 +363,71 @@
larger than 128KB, and will return to being enabled once all
filesystems that have ever had their recordsize larger than 128KB
are destroyed.
+
+ vdev_properties
+
+ GUID com.nexenta:vdev_properties
+ READ-ONLY COMPATIBLE yes
+ DEPENDENCIES none
+
+ This feature indicates that the pool includes on-disk format
+ changes that support persistent vdev-specific properties. This
+ feature will be active when the first vdev-specific property is
+ set.
+
+
+
+ cos_properties
+
+ GUID com.nexenta:cos_properties
+ READ-ONLY COMPATIBLE yes
+ DEPENDENCIES com.nexenta:vdev_properties
+
+ This feature indicates that the pool includes on-disk format
+ changes that support persistent Class of Storage (CoS) properties.
+ Such properties can be associated with a collection of device that
+ belong to a common class from storage management standpoint. This
+ feature will be active when the first CoS property is set.
+
+
+
+ meta_devices
+
+ GUID com.nexenta:meta_devices
+ READ-ONLY COMPATIBLE yes
+ DEPENDENCIES none
+
+ This feature flag indicates presence of special-vdev in the pool.
+ Special vdev is used to speed-up read and write operations and can
+ be used to store ZFS metadata and/or write log (ZIL). In addition,
+ special vdev can function as a writeback cache (WBC) within the
+ pool, accelerating ZFS writes via underlying fast media (typically,
+ write-optimized SSD).
+
+ Note that unlike the first two functions the WBC function is
+ configurable on a per-dataset tree basis.
+
+
+
+ wbc
+
+ GUID com.nexenta:wbc
+ READ-ONLY COMPATIBLE no
+ DEPENDENCIES com.nexenta:meta_devices
+
+ When enabled, this feature indicates that the pool supports
+ writeback caching. The latter can be activated on a specific
+ filesystem (and all its children) or a volume (zvol) within the
+ pool by setting the corresponding wbc_mode property to 'on'. This
+ feature will show up as disabled if the pool does not contain
+ special-vdev.
+
+
+
sha512
GUID org.illumos:sha512
READ-ONLY COMPATIBLE no
DEPENDENCIES extensible_dataset
@@ -456,6 +517,6 @@
SEE ALSO
zfs(1M), zpool(1M)
- August 27, 2013 ZPOOL-FEATURES(5)
+ March 25, 2016 ZPOOL-FEATURES(5)