diff options
Diffstat (limited to 'man/man5')
| -rw-r--r-- | man/man5/zpool-features.5 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/man/man5/zpool-features.5 b/man/man5/zpool-features.5 index 00bad9f74..6c03f9049 100644 --- a/man/man5/zpool-features.5 +++ b/man/man5/zpool-features.5 @@ -570,6 +570,28 @@ clones have been destroyed. .sp .ne 2 .na +\fBlog_spacemap\fR +.ad +.RS 4n +.TS +l l . +GUID com.delphix:log_spacemap +READ\-ONLY COMPATIBLE yes +DEPENDENCIES com.delphix:spacemap_v2 +.TE + +This feature improves performance for heavily-fragmented pools, +especially when workloads are heavy in random-writes. It does so by +logging all the metaslab changes on a single spacemap every TXG +instead of scattering multiple writes to all the metaslab spacemaps. + +This feature becomes \fBactive\fR as soon as it is enabled and will never +return to being \fBenabled\fR. +.RE + +.sp +.ne 2 +.na \fBlz4_compress\fR .ad .RS 4n |