vdev_label_os.c

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    1 /*
    2  * CDDL HEADER START
    3  *
    4  * The contents of this file are subject to the terms of the
    5  * Common Development and Distribution License (the "License").
    6  * You may not use this file except in compliance with the License.
    7  *
    8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
    9  * or https://opensource.org/licenses/CDDL-1.0.
   10  * See the License for the specific language governing permissions
   11  * and limitations under the License.
   12  *
   13  * When distributing Covered Code, include this CDDL HEADER in each
   14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
   15  * If applicable, add the following below this CDDL HEADER, with the
   16  * fields enclosed by brackets "[]" replaced with your own identifying
   17  * information: Portions Copyright [yyyy] [name of copyright owner]
   18  *
   19  * CDDL HEADER END
   20  */
   21 
   22 #include <sys/zfs_context.h>
   23 #include <sys/spa.h>
   24 #include <sys/spa_impl.h>
   25 #include <sys/dmu.h>
   26 #include <sys/zap.h>
   27 #include <sys/vdev.h>
   28 #include <sys/vdev_os.h>
   29 #include <sys/vdev_impl.h>
   30 #include <sys/uberblock_impl.h>
   31 #include <sys/metaslab.h>
   32 #include <sys/metaslab_impl.h>
   33 #include <sys/zio.h>
   34 #include <sys/dsl_scan.h>
   35 #include <sys/abd.h>
   36 #include <sys/fs/zfs.h>
   37 
   38 int
   39 vdev_label_write_pad2(vdev_t *vd, const char *buf, size_t size)
   40 {
   41         spa_t *spa = vd->vdev_spa;
   42         zio_t *zio;
   43         abd_t *pad2;
   44         int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL;
   45         int error;
   46 
   47         if (size > VDEV_PAD_SIZE)
   48                 return (EINVAL);
   49 
   50         if (!vd->vdev_ops->vdev_op_leaf)
   51                 return (ENODEV);
   52         if (vdev_is_dead(vd))
   53                 return (ENXIO);
   54 
   55         ASSERT3U(spa_config_held(spa, SCL_ALL, RW_WRITER), ==, SCL_ALL);
   56 
   57         pad2 = abd_alloc_for_io(VDEV_PAD_SIZE, B_TRUE);
   58         abd_zero(pad2, VDEV_PAD_SIZE);
   59         abd_copy_from_buf(pad2, buf, size);
   60 
   61 retry:
   62         zio = zio_root(spa, NULL, NULL, flags);
   63         vdev_label_write(zio, vd, 0, pad2,
   64             offsetof(vdev_label_t, vl_be),
   65             VDEV_PAD_SIZE, NULL, NULL, flags);
   66         error = zio_wait(zio);
   67         if (error != 0 && !(flags & ZIO_FLAG_TRYHARD)) {
   68                 flags |= ZIO_FLAG_TRYHARD;
   69                 goto retry;
   70         }
   71 
   72         abd_free(pad2);
   73         return (error);
   74 }

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/module/os/freebsd/zfs/vdev_label_os.c

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/module/os/freebsd/zfs/vdev_label_os.c