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Diffstat (limited to 'man')
| -rw-r--r-- | man/lvmcache.7_main | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/man/lvmcache.7_main b/man/lvmcache.7_main index 48cf7b492..8d7d3d17b 100644 --- a/man/lvmcache.7_main +++ b/man/lvmcache.7_main @@ -299,6 +299,39 @@ perform. If not done beforehand, the splitcache command enables the cleaner mode and waits for flushing to complete before detaching the writecache. Adding cleaner=0 to the splitcache command will skip the cleaner mode, and any required flushing is performed in device suspend. + +.SS dm-writecache using metadata profiles + +Writecache allows to set a variety of options. Lots of these settings +can be specified in lvm.conf or profile settings. You can prepare +a number of different profiles in the \fI#DEFAULT_SYS_DIR#/profile\fP directory +and just specify the metadata profile file name when writecaching LV. +.P +.I Example +.nf +# cat <<EOF > #DEFAULT_SYS_DIR#/profile/cache_writecache.profile +allocation { +.RS +cache_settings { +.RS +writecache { +.RS +high_watermark=60 +writeback_jobs=1024 +.RE +} +.RE +} +.RE +} +EOF +.P + +# lvcreate -an -L10G --name wcache vg /dev/fast_ssd +# lvcreate --type writecache -L10G --name main --cachevol wcache \\ + --metadataprofile cache_writecache vg /dev/slow_hdd +.fi + . .SS dm-cache with separate data and metadata LVs . |