mirror_zfs/man
Sara Hartse 37f03da8ba Fast Clone Deletion
Deleting a clone requires finding blocks are clone-only, not shared
with the snapshot. This was done by traversing the entire block tree
which results in a large performance penalty for sparsely
written clones.

This is new method keeps track of clone blocks when they are
modified in a "Livelist" so that, when it’s time to delete,
the clone-specific blocks are already at hand.

We see performance improvements because now deletion work is
proportional to the number of clone-modified blocks, not the size
of the original dataset.

Reviewed-by: Sean Eric Fagan <sef@ixsystems.com>
Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Signed-off-by: Sara Hartse <sara.hartse@delphix.com>
Closes #8416
2019-07-26 10:54:14 -07:00
..
man1 New service that waits on zvol links to be created 2019-07-17 15:33:05 -07:00
man5 Fast Clone Deletion 2019-07-26 10:54:14 -07:00
man8 Add zfs create dryrun 2019-07-16 11:19:24 -07:00
Makefile.am Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00