diff options
| author | Matt Ahrens <[email protected]> | 2011-07-26 12:23:00 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2011-08-01 12:09:11 -0700 |
| commit | f5fc4acaa77e2c1782a9495bbf1a39884b4c3940 (patch) | |
| tree | 1d562e2608deaf93b5b65042f72e7e0f6b992750 /module/zcommon | |
| parent | 6d974228ef05366c546bb04198dafcb38785c16d (diff) | |
Illumos #1092: zfs refratio property
Add a "REFRATIO" property, which is the compression ratio based on
data referenced. For snapshots, this is the same as COMPRESSRATIO,
but for filesystems/volumes, the COMPRESSRATIO is based on the
data "USED" (ie, includes blocks in children, but not blocks
shared with the origin).
This is needed to figure out how much space a filesystem would
use if it were not compressed (ignoring snapshots).
Reviewed by: George Wilson <[email protected]>
Reviewed by: Adam Leventhal <[email protected]>
Reviewed by: Dan McDonald <[email protected]>
Reviewed by: Richard Elling <[email protected]>
Reviewed by: Mark Musante <[email protected]>
Reviewed by: Garrett D'Amore <[email protected]>
Approved by: Garrett D'Amore <[email protected]>
References to Illumos issue and patch:
- https://www.illumos.org/issues/1092
- https://github.com/illumos/illumos-gate/commit/187d6ac08a
Signed-off-by: Brian Behlendorf <[email protected]>
Issue #340
Diffstat (limited to 'module/zcommon')
| -rw-r--r-- | module/zcommon/zfs_prop.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/module/zcommon/zfs_prop.c b/module/zcommon/zfs_prop.c index ce03a498c..9d65e35de 100644 --- a/module/zcommon/zfs_prop.c +++ b/module/zcommon/zfs_prop.c @@ -20,6 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2011 by Delphix. All rights reserved. */ /* Portions Copyright 2010 Robert Milkowski */ @@ -311,6 +312,9 @@ zfs_prop_init(void) zprop_register_number(ZFS_PROP_COMPRESSRATIO, "compressratio", 0, PROP_READONLY, ZFS_TYPE_DATASET, "<1.00x or higher if compressed>", "RATIO"); + zprop_register_number(ZFS_PROP_REFRATIO, "refcompressratio", 0, + PROP_READONLY, ZFS_TYPE_DATASET, + "<1.00x or higher if compressed>", "REFRATIO"); zprop_register_number(ZFS_PROP_VOLBLOCKSIZE, "volblocksize", ZVOL_DEFAULT_BLOCKSIZE, PROP_ONETIME, ZFS_TYPE_VOLUME, "512 to 128k, power of 2", "VOLBLOCK"); |