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author | pjd <pjd@FreeBSD.org> | 2008-11-17 20:49:29 +0000 |
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committer | pjd <pjd@FreeBSD.org> | 2008-11-17 20:49:29 +0000 |
commit | bbe899b96e388a8b82439f81ed3707e0d9c6070d (patch) | |
tree | 81b89fa4ac6467771d5aa291a97f4665981a6108 /sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c | |
parent | d2f579595c362ce27b4d87e2c40e1c4e09b929e3 (diff) | |
download | FreeBSD-src-bbe899b96e388a8b82439f81ed3707e0d9c6070d.zip FreeBSD-src-bbe899b96e388a8b82439f81ed3707e0d9c6070d.tar.gz |
Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes.
This bring huge amount of changes, I'll enumerate only user-visible changes:
- Delegated Administration
Allows regular users to perform ZFS operations, like file system
creation, snapshot creation, etc.
- L2ARC
Level 2 cache for ZFS - allows to use additional disks for cache.
Huge performance improvements mostly for random read of mostly
static content.
- slog
Allow to use additional disks for ZFS Intent Log to speed up
operations like fsync(2).
- vfs.zfs.super_owner
Allows regular users to perform privileged operations on files stored
on ZFS file systems owned by him. Very careful with this one.
- chflags(2)
Not all the flags are supported. This still needs work.
- ZFSBoot
Support to boot off of ZFS pool. Not finished, AFAIK.
Submitted by: dfr
- Snapshot properties
- New failure modes
Before if write requested failed, system paniced. Now one
can select from one of three failure modes:
- panic - panic on write error
- wait - wait for disk to reappear
- continue - serve read requests if possible, block write requests
- Refquota, refreservation properties
Just quota and reservation properties, but don't count space consumed
by children file systems, clones and snapshots.
- Sparse volumes
ZVOLs that don't reserve space in the pool.
- External attributes
Compatible with extattr(2).
- NFSv4-ACLs
Not sure about the status, might not be complete yet.
Submitted by: trasz
- Creation-time properties
- Regression tests for zpool(8) command.
Obtained from: OpenSolaris
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c')
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c index 0e8752c..88383f0 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c @@ -19,12 +19,10 @@ * CDDL HEADER END */ /* - * Copyright 2006 Sun Microsystems, Inc. All rights reserved. + * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ -#pragma ident "%Z%%M% %I% %E% SMI" - #include <sys/zfs_context.h> #include <sys/spa.h> #include <sys/vdev_impl.h> @@ -44,18 +42,17 @@ * probably fine. Adding bean counters during alloc/free can make this * future guesswork more accurate. */ -/*ARGSUSED*/ static int too_many_errors(vdev_t *vd, int numerrors) { + ASSERT3U(numerrors, <=, vd->vdev_children); return (numerrors > 0); } static int vdev_root_open(vdev_t *vd, uint64_t *asize, uint64_t *ashift) { - vdev_t *cvd; - int c, error; + int c; int lasterror = 0; int numerrors = 0; @@ -65,9 +62,11 @@ vdev_root_open(vdev_t *vd, uint64_t *asize, uint64_t *ashift) } for (c = 0; c < vd->vdev_children; c++) { - cvd = vd->vdev_child[c]; + vdev_t *cvd = vd->vdev_child[c]; + int error; - if ((error = vdev_open(cvd)) != 0) { + if ((error = vdev_open(cvd)) != 0 && + !cvd->vdev_islog) { lasterror = error; numerrors++; continue; @@ -97,13 +96,14 @@ vdev_root_close(vdev_t *vd) static void vdev_root_state_change(vdev_t *vd, int faulted, int degraded) { - if (too_many_errors(vd, faulted)) + if (too_many_errors(vd, faulted)) { vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, VDEV_AUX_NO_REPLICAS); - else if (degraded != 0) + } else if (degraded) { vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, VDEV_AUX_NONE); - else + } else { vdev_set_state(vd, B_FALSE, VDEV_STATE_HEALTHY, VDEV_AUX_NONE); + } } vdev_ops_t vdev_root_ops = { |