how long zfs events are retained

[mokank]

Hi

I would like to retain the zfs events forever, do we have any properties to set this value.
Could someone guide please

also i dont see any properties been available to retain the zfs events loner.

[05:23:02] labtest:~ # zfs get all test
NAME PROPERTY VALUE SOURCE
Test type filesystem -
test creation Fri Nov 16 15:40 2018 -
test used 114G -
test available 272G -
test referenced 96K -
test compressratio 2.14x -
test mounted yes -
test quota none default
test reservation none default
test recordsize 128K default
test mountpoint /test default
test sharenfs off default
test checksum on default
test compression lz4 local
test atime on default
test devices on default
test exec on default
test setuid on default
test readonly off default
test zoned off default
test snapdir hidden default
test aclinherit restricted default
test createtxg 1 -
test canmount on default
test xattr on default
test copies 1 default
test version 5 -
test utf8only off -
test normalization none -
test casesensitivity sensitive -
test vscan off default
test nbmand off default
test sharesmb off default
test refquota none default
test refreservation none default
test guid 15252145084986466622 -
test primarycache all default
test secondarycache all default
test usedbysnapshots 0B -
test usedbydataset 96K -
test usedbychildren 114G -
test usedbyrefreservation 0B -
test logbias latency default
test dedup off default
test mlslabel none default
test sync standard default
test dnodesize legacy default
test refcompressratio 1.00x -
test written 96K -
test logicalused 243G -
test logicalreferenced 34.5K -
test volmode default default
test filesystem_limit none default
test snapshot_limit none default
test filesystem_count none default
test snapshot_count none default
test snapdev hidden default
test acltype off default
test context none default
test fscontext none default
test defcontext none default
test rootcontext none default
test relatime off default
test redundant_metadata all default
test overlay off default

[rincebrain]

It's ambiguous what you mean by "zfs events", but the contents of zpool events is not currently persistent past reboot on Linux or FreeBSD, and the buffer that reads from is finite in a way that at least on Linux I believe is hardcoded in addition to that.

Patches welcome, but it seems so far nobody has been bothered enough by this to change it.

I think most people who want somewhat indefinitely persistent zpool events data add a zedlet that logs the incoming events somewhere for them.