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5818 zfs {ref}compressratio is incorrect with 4k sector size

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Author: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george@delphix.com>
Reviewed by: Richard Elling <richard.elling@richardelling.com>
Reviewed by: Steven Hartland <killing@multiplay.co.uk>
Reviewed by: Don Brady <dev.fs.zfs@gmail.com>
Approved by: Albert Lee <trisk@omniti.com>

illumos/illumos-gate@81cd5c555f
This commit is contained in:
Andriy Gapon 2015-06-05 16:49:21 +00:00
parent 1a6c23b57a
commit cd7e9ce6ff
7 changed files with 42 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
cmd/ztest/ztest.c
View File

@ -20,7 +20,7 @@
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2011, 2015 by Delphix. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2013 Steven Hartland. All rights reserved.
*/
@ -967,21 +967,6 @@ ztest_random_spa_version(uint64_t initial_version)
return (version);
}
/*
* Find the largest ashift used
*/
static uint64_t
ztest_spa_get_ashift() {
uint64_t i;
uint64_t ashift = SPA_MINBLOCKSHIFT;
vdev_t *rvd = ztest_spa->spa_root_vdev;
for (i = 0; i < rvd->vdev_children; i++) {
ashift = MAX(ashift, rvd->vdev_child[i]->vdev_ashift);
}
return (ashift);
}
static int
ztest_random_blocksize(void)
{
@ -993,7 +978,7 @@ ztest_random_blocksize(void)
int maxbs = SPA_OLD_MAXBLOCKSHIFT;
if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE)
maxbs = 20;
block_shift = ztest_random(maxbs - ztest_spa_get_ashift() + 1);
block_shift = ztest_random(maxbs - ztest_spa->spa_max_ashift + 1);
return (1 << (SPA_MINBLOCKSHIFT + block_shift));
}

2
uts/common/fs/zfs/spa.c
View File

@ -2195,6 +2195,8 @@ spa_load_impl(spa_t *spa, uint64_t pool_guid, nvlist_t *config,
return (error);
ASSERT(spa->spa_root_vdev == rvd);
ASSERT3U(spa->spa_min_ashift, >=, SPA_MINBLOCKSHIFT);
ASSERT3U(spa->spa_max_ashift, <=, SPA_MAXBLOCKSHIFT);
if (type != SPA_IMPORT_ASSEMBLE) {
ASSERT(spa_guid(spa) == pool_guid);

5
uts/common/fs/zfs/spa_misc.c
View File

@ -20,7 +20,7 @@
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2011, 2015 by Delphix. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
*/
@ -648,6 +648,9 @@ spa_add(const char *name, nvlist_t *config, const char *altroot)
spa->spa_debug = ((zfs_flags & ZFS_DEBUG_SPA) != 0);
spa->spa_min_ashift = INT_MAX;
spa->spa_max_ashift = 0;
/*
* As a pool is being created, treat all features as disabled by
* setting SPA_FEATURE_DISABLED for all entries in the feature

4
uts/common/fs/zfs/sys/spa_impl.h
View File

@ -20,7 +20,7 @@
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2011, 2015 by Delphix. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
*/
@ -150,6 +150,8 @@ struct spa {
kcondvar_t spa_evicting_os_cv; /* Objset Eviction Completion */
txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */
vdev_t *spa_root_vdev; /* top-level vdev container */
int spa_min_ashift; /* of vdevs in normal class */
int spa_max_ashift; /* of vdevs in normal class */
uint64_t spa_config_guid; /* config pool guid */
uint64_t spa_load_guid; /* spa_load initialized guid */
uint64_t spa_last_synced_guid; /* last synced guid */

4
uts/common/fs/zfs/sys/vdev_impl.h
View File

@ -20,7 +20,7 @@
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
* Copyright (c) 2011, 2015 by Delphix. All rights reserved.
*/
#ifndef _SYS_VDEV_IMPL_H
@ -207,7 +207,7 @@ struct vdev {
boolean_t vdev_isl2cache; /* was a l2cache device */
vdev_queue_t vdev_queue; /* I/O deadline schedule queue */
vdev_cache_t vdev_cache; /* physical block cache */
spa_aux_vdev_t *vdev_aux; /* for l2cache vdevs */
spa_aux_vdev_t *vdev_aux; /* for l2cache and spares vdevs */
zio_t *vdev_probe_zio; /* root of current probe */
vdev_aux_t vdev_label_aux; /* on-disk aux state */

18
uts/common/fs/zfs/vdev.c
View File

@ -21,8 +21,8 @@
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2011, 2015 by Delphix. All rights reserved.
* Copyright 2015 Nexenta Systems, Inc. All rights reserved.
*/
#include <sys/zfs_context.h>
@ -184,8 +184,9 @@ vdev_add_child(vdev_t *pvd, vdev_t *cvd)
size_t oldsize, newsize;
uint64_t id = cvd->vdev_id;
vdev_t **newchild;
spa_t *spa = cvd->vdev_spa;
ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
ASSERT(cvd->vdev_parent == NULL);
cvd->vdev_parent = pvd;
@ -1286,6 +1287,17 @@ vdev_open(vdev_t *vd)
return (error);
}
/*
* Track the min and max ashift values for normal data devices.
*/
if (vd->vdev_top == vd && vd->vdev_ashift != 0 &&
!vd->vdev_islog && vd->vdev_aux == NULL) {
if (vd->vdev_ashift > spa->spa_max_ashift)
spa->spa_max_ashift = vd->vdev_ashift;
if (vd->vdev_ashift < spa->spa_min_ashift)
spa->spa_min_ashift = vd->vdev_ashift;
}
/*
* If a leaf vdev has a DTL, and seems healthy, then kick off a
* resilver. But don't do this if we are doing a reopen for a scrub,

24
uts/common/fs/zfs/zio.c
View File

@ -20,7 +20,7 @@
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2011, 2015 by Delphix. All rights reserved.
* Copyright (c) 2011 Nexenta Systems, Inc. All rights reserved.
*/
@ -1178,19 +1178,23 @@ zio_write_bp_init(zio_t *zio)
return (ZIO_PIPELINE_CONTINUE);
} else {
/*
* Round up compressed size to MINBLOCKSIZE and
* zero the tail.
* Round up compressed size up to the ashift
* of the smallest-ashift device, and zero the tail.
* This ensures that the compressed size of the BP
* (and thus compressratio property) are correct,
* in that we charge for the padding used to fill out
* the last sector.
*/
size_t rounded =
P2ROUNDUP(psize, (size_t)SPA_MINBLOCKSIZE);
if (rounded > psize) {
bzero((char *)cbuf + psize, rounded - psize);
psize = rounded;
}
if (psize == lsize) {
ASSERT3U(spa->spa_min_ashift, >=, SPA_MINBLOCKSHIFT);
size_t rounded = (size_t)P2ROUNDUP(psize,
1ULL << spa->spa_min_ashift);
if (rounded >= lsize) {
compress = ZIO_COMPRESS_OFF;
zio_buf_free(cbuf, lsize);
psize = lsize;
} else {
bzero((char *)cbuf + psize, rounded - psize);
psize = rounded;
zio_push_transform(zio, cbuf,
psize, lsize, NULL);
}