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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_file.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_file.c')
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c | 73 |
1 files changed, 20 insertions, 53 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c index ab2d34c..673b633 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c @@ -19,18 +19,17 @@ * 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_file.h> #include <sys/vdev_impl.h> #include <sys/zio.h> #include <sys/fs/zfs.h> +#include <sys/fm/fs/zfs.h> /* * Virtual device vector for files. @@ -61,8 +60,8 @@ vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *ashift) * to local zone users, so the underlying devices should be as well. */ ASSERT(vd->vdev_path != NULL && vd->vdev_path[0] == '/'); - error = vn_openat(vd->vdev_path + 1, UIO_SYSSPACE, spa_mode | FOFFMAX, - 0, &vp, 0, 0, rootdir); + error = vn_openat(vd->vdev_path + 1, UIO_SYSSPACE, + spa_mode | FOFFMAX, 0, &vp, 0, 0, rootdir, -1); if (error) { vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; @@ -80,12 +79,13 @@ vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *ashift) return (ENODEV); } #endif - /* * Determine the physical size of the file. */ vattr.va_mask = AT_SIZE; - error = VOP_GETATTR(vp, &vattr, 0); + vn_lock(vp, LK_SHARED | LK_RETRY); + error = VOP_GETATTR(vp, &vattr, kcred); + VOP_UNLOCK(vp, 0); if (error) { vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; return (error); @@ -101,71 +101,46 @@ static void vdev_file_close(vdev_t *vd) { vdev_file_t *vf = vd->vdev_tsd; + int vfslocked; if (vf == NULL) return; if (vf->vf_vnode != NULL) { - (void) VOP_PUTPAGE(vf->vf_vnode, 0, 0, B_INVAL, kcred); - (void) VOP_CLOSE(vf->vf_vnode, spa_mode, 1, 0, kcred); + vfslocked = VFS_LOCK_GIANT(vf->vf_vnode->v_mount); + (void)vn_close(vf->vf_vnode, spa_mode, kcred, curthread); VN_RELE(vf->vf_vnode); + VFS_UNLOCK_GIANT(vfslocked); } kmem_free(vf, sizeof (vdev_file_t)); vd->vdev_tsd = NULL; } -static void +static int vdev_file_io_start(zio_t *zio) { vdev_t *vd = zio->io_vd; vdev_file_t *vf = vd->vdev_tsd; ssize_t resid; - int error; if (zio->io_type == ZIO_TYPE_IOCTL) { - zio_vdev_io_bypass(zio); - /* XXPOLICY */ - if (vdev_is_dead(vd)) { + if (!vdev_readable(vd)) { zio->io_error = ENXIO; - zio_next_stage_async(zio); - return; + return (ZIO_PIPELINE_CONTINUE); } switch (zio->io_cmd) { case DKIOCFLUSHWRITECACHE: zio->io_error = VOP_FSYNC(vf->vf_vnode, FSYNC | FDSYNC, - kcred); - dprintf("fsync(%s) = %d\n", vdev_description(vd), - zio->io_error); + kcred, NULL); break; default: zio->io_error = ENOTSUP; } - zio_next_stage_async(zio); - return; - } - - /* - * In the kernel, don't bother double-caching, but in userland, - * we want to test the vdev_cache code. - */ -#ifndef _KERNEL - if (zio->io_type == ZIO_TYPE_READ && vdev_cache_read(zio) == 0) - return; -#endif - - if ((zio = vdev_queue_io(zio)) == NULL) - return; - - /* XXPOLICY */ - error = vdev_is_dead(vd) ? ENXIO : vdev_error_inject(vd, zio); - if (error) { - zio->io_error = error; - zio_next_stage_async(zio); - return; + return (ZIO_PIPELINE_CONTINUE); } zio->io_error = vn_rdwr(zio->io_type == ZIO_TYPE_READ ? @@ -176,23 +151,15 @@ vdev_file_io_start(zio_t *zio) if (resid != 0 && zio->io_error == 0) zio->io_error = ENOSPC; - zio_next_stage_async(zio); + zio_interrupt(zio); + + return (ZIO_PIPELINE_STOP); } +/* ARGSUSED */ static void vdev_file_io_done(zio_t *zio) { - vdev_queue_io_done(zio); - -#ifndef _KERNEL - if (zio->io_type == ZIO_TYPE_WRITE) - vdev_cache_write(zio); -#endif - - if (zio_injection_enabled && zio->io_error == 0) - zio->io_error = zio_handle_device_injection(zio->io_vd, EIO); - - zio_next_stage(zio); } vdev_ops_t vdev_file_ops = { |