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Introduce read/write kstats per dataset

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The following patch introduces a few statistics on reads and writes
grouped by dataset. These statistics are implemented as kstats
(backed by aggregate sums for performance) and can be retrieved by
using the dataset objset ID number. The motivation for this change is
to provide some preliminary analytics on dataset usage/performance.

Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Closes #7705
This commit is contained in:
Serapheim Dimitropoulos
2018-08-20 09:52:37 -07:00
committed by Brian Behlendorf
parent fa84714abb
commit a448a2557e
16 changed files with 368 additions and 78 deletions
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man/man8/zfs.8
+10
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@@ -718,6 +718,16 @@ This property can be either
.Sy yes
or
.Sy no .
.It Sy objsetid
A unique identifier for this dataset within the pool. Unlike the dataset's
.Sy guid
, the
.Sy objsetid
of a dataset is not transferred to other pools when the snapshot is copied
with a send/receive operation.
The
.Sy objsetid
can be reused (for a new datatset) after the dataset is deleted.
.It Sy origin
For cloned file systems or volumes, the snapshot from which the clone was
created.