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Rebase master to b117

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This commit is contained in:
Brian Behlendorf
2009-07-02 15:44:48 -07:00
parent d164b20935
commit 9babb37438
103 changed files with 7629 additions and 4093 deletions
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module/zfs/vdev_label.c
+45 -20
View File
@@ -233,6 +233,10 @@ vdev_config_generate(spa_t *spa, vdev_t *vd, boolean_t getstats,
VERIFY(nvlist_add_string(nv, ZPOOL_CONFIG_PHYS_PATH,
vd->vdev_physpath) == 0);
if (vd->vdev_fru != NULL)
VERIFY(nvlist_add_string(nv, ZPOOL_CONFIG_FRU,
vd->vdev_fru) == 0);
if (vd->vdev_nparity != 0) {
ASSERT(strcmp(vd->vdev_ops->vdev_op_type,
VDEV_TYPE_RAIDZ) == 0);
@@ -335,8 +339,8 @@ vdev_label_read_config(vdev_t *vd)
nvlist_t *config = NULL;
vdev_phys_t *vp;
zio_t *zio;
int flags =
ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE;
int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL |
ZIO_FLAG_SPECULATIVE;
ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
@@ -345,6 +349,7 @@ vdev_label_read_config(vdev_t *vd)
vp = zio_buf_alloc(sizeof (vdev_phys_t));
retry:
for (int l = 0; l < VDEV_LABELS; l++) {
zio = zio_root(spa, NULL, NULL, flags);
@@ -364,6 +369,11 @@ vdev_label_read_config(vdev_t *vd)
}
}
if (config == NULL && !(flags & ZIO_FLAG_TRYHARD)) {
flags |= ZIO_FLAG_TRYHARD;
goto retry;
}
zio_buf_free(vp, sizeof (vdev_phys_t));
return (config);
@@ -488,7 +498,7 @@ vdev_label_init(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason)
spa_t *spa = vd->vdev_spa;
nvlist_t *label;
vdev_phys_t *vp;
vdev_boot_header_t *vb;
char *pad2;
uberblock_t *ub;
zio_t *zio;
char *buf;
@@ -629,16 +639,6 @@ vdev_label_init(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason)
return (error == EFAULT ? ENAMETOOLONG : EINVAL);
}
/*
* Initialize boot block header.
*/
vb = zio_buf_alloc(sizeof (vdev_boot_header_t));
bzero(vb, sizeof (vdev_boot_header_t));
vb->vb_magic = VDEV_BOOT_MAGIC;
vb->vb_version = VDEV_BOOT_VERSION;
vb->vb_offset = VDEV_BOOT_OFFSET;
vb->vb_size = VDEV_BOOT_SIZE;
/*
* Initialize uberblock template.
*/
@@ -647,9 +647,14 @@ vdev_label_init(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason)
*ub = spa->spa_uberblock;
ub->ub_txg = 0;
/* Initialize the 2nd padding area. */
pad2 = zio_buf_alloc(VDEV_PAD_SIZE);
bzero(pad2, VDEV_PAD_SIZE);
/*
* Write everything in parallel.
*/
retry:
zio = zio_root(spa, NULL, NULL, flags);
for (int l = 0; l < VDEV_LABELS; l++) {
@@ -658,9 +663,14 @@ vdev_label_init(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason)
offsetof(vdev_label_t, vl_vdev_phys),
sizeof (vdev_phys_t), NULL, NULL, flags);
vdev_label_write(zio, vd, l, vb,
offsetof(vdev_label_t, vl_boot_header),
sizeof (vdev_boot_header_t), NULL, NULL, flags);
/*
* Skip the 1st padding area.
* Zero out the 2nd padding area where it might have
* left over data from previous filesystem format.
*/
vdev_label_write(zio, vd, l, pad2,
offsetof(vdev_label_t, vl_pad2),
VDEV_PAD_SIZE, NULL, NULL, flags);
for (int n = 0; n < VDEV_UBERBLOCK_COUNT(vd); n++) {
vdev_label_write(zio, vd, l, ub,
@@ -671,9 +681,14 @@ vdev_label_init(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason)
error = zio_wait(zio);
if (error != 0 && !(flags & ZIO_FLAG_TRYHARD)) {
flags |= ZIO_FLAG_TRYHARD;
goto retry;
}
nvlist_free(label);
zio_buf_free(pad2, VDEV_PAD_SIZE);
zio_buf_free(ub, VDEV_UBERBLOCK_SIZE(vd));
zio_buf_free(vb, sizeof (vdev_boot_header_t));
zio_buf_free(vp, sizeof (vdev_phys_t));
/*
@@ -757,8 +772,8 @@ vdev_uberblock_load(zio_t *zio, vdev_t *vd, uberblock_t *ubbest)
{
spa_t *spa = vd->vdev_spa;
vdev_t *rvd = spa->spa_root_vdev;
int flags =
ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE;
int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL |
ZIO_FLAG_SPECULATIVE | ZIO_FLAG_TRYHARD;
if (vd == rvd) {
ASSERT(zio == NULL);
@@ -996,7 +1011,7 @@ vdev_label_sync_list(spa_t *spa, int l, uint64_t txg, int flags)
* at any time, you can just call it again, and it will resume its work.
*/
int
vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg)
vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg, boolean_t tryhard)
{
spa_t *spa = svd[0]->vdev_spa;
uberblock_t *ub = &spa->spa_uberblock;
@@ -1005,6 +1020,16 @@ vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg)
int error;
int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL;
/*
* Normally, we don't want to try too hard to write every label and
* uberblock. If there is a flaky disk, we don't want the rest of the
* sync process to block while we retry. But if we can't write a
* single label out, we should retry with ZIO_FLAG_TRYHARD before
* bailing out and declaring the pool faulted.
*/
if (tryhard)
flags |= ZIO_FLAG_TRYHARD;
ASSERT(ub->ub_txg <= txg);
/*