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Illumos #3498 panic in arc_read()

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3498 panic in arc_read(): !refcount_is_zero(&pbuf->b_hdr->b_refcnt)
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Richard Lowe <richlowe@richlowe.net>

References:
  illumos/illumos-gate@1b912ec710
  https://www.illumos.org/issues/3498

Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1249
This commit is contained in:
George Wilson
2013-07-02 13:26:24 -07:00
committed by Brian Behlendorf
parent 96b89346c0
commit 294f68063b
16 changed files with 75 additions and 196 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/dsl_scan.c
+5 -31
View File
@@ -363,24 +363,6 @@ dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp)
zio_nowait(zio_free_sync(pio, dp->dp_spa, txg, bpp, pio->io_flags));
}
int
dsl_read(zio_t *pio, spa_t *spa, const blkptr_t *bpp, arc_buf_t *pbuf,
arc_done_func_t *done, void *private, int priority, int zio_flags,
uint32_t *arc_flags, const zbookmark_t *zb)
{
return (arc_read(pio, spa, bpp, pbuf, done, private,
priority, zio_flags, arc_flags, zb));
}
int
dsl_read_nolock(zio_t *pio, spa_t *spa, const blkptr_t *bpp,
arc_done_func_t *done, void *private, int priority, int zio_flags,
uint32_t *arc_flags, const zbookmark_t *zb)
{
return (arc_read_nolock(pio, spa, bpp, done, private,
priority, zio_flags, arc_flags, zb));
}
static uint64_t
dsl_scan_ds_maxtxg(dsl_dataset_t *ds)
{
@@ -551,12 +533,8 @@ dsl_scan_prefetch(dsl_scan_t *scn, arc_buf_t *buf, blkptr_t *bp,
SET_BOOKMARK(&czb, objset, object, BP_GET_LEVEL(bp), blkid);
/*
* XXX need to make sure all of these arc_read() prefetches are
* done before setting xlateall (similar to dsl_read())
*/
(void) arc_read(scn->scn_zio_root, scn->scn_dp->dp_spa, bp,
buf, NULL, NULL, ZIO_PRIORITY_ASYNC_READ,
NULL, NULL, ZIO_PRIORITY_ASYNC_READ,
ZIO_FLAG_CANFAIL | ZIO_FLAG_SCAN_THREAD, &flags, &czb);
}
@@ -614,8 +592,7 @@ dsl_scan_recurse(dsl_scan_t *scn, dsl_dataset_t *ds, dmu_objset_type_t ostype,
blkptr_t *cbp;
int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
err = arc_read_nolock(NULL, dp->dp_spa, bp,
arc_getbuf_func, bufp,
err = arc_read(NULL, dp->dp_spa, bp, arc_getbuf_func, bufp,
ZIO_PRIORITY_ASYNC_READ, zio_flags, &flags, zb);
if (err) {
scn->scn_phys.scn_errors++;
@@ -637,8 +614,7 @@ dsl_scan_recurse(dsl_scan_t *scn, dsl_dataset_t *ds, dmu_objset_type_t ostype,
} else if (BP_GET_TYPE(bp) == DMU_OT_USERGROUP_USED) {
uint32_t flags = ARC_WAIT;
err = arc_read_nolock(NULL, dp->dp_spa, bp,
arc_getbuf_func, bufp,
err = arc_read(NULL, dp->dp_spa, bp, arc_getbuf_func, bufp,
ZIO_PRIORITY_ASYNC_READ, zio_flags, &flags, zb);
if (err) {
scn->scn_phys.scn_errors++;
@@ -650,8 +626,7 @@ dsl_scan_recurse(dsl_scan_t *scn, dsl_dataset_t *ds, dmu_objset_type_t ostype,
int i, j;
int epb = BP_GET_LSIZE(bp) >> DNODE_SHIFT;
err = arc_read_nolock(NULL, dp->dp_spa, bp,
arc_getbuf_func, bufp,
err = arc_read(NULL, dp->dp_spa, bp, arc_getbuf_func, bufp,
ZIO_PRIORITY_ASYNC_READ, zio_flags, &flags, zb);
if (err) {
scn->scn_phys.scn_errors++;
@@ -673,8 +648,7 @@ dsl_scan_recurse(dsl_scan_t *scn, dsl_dataset_t *ds, dmu_objset_type_t ostype,
uint32_t flags = ARC_WAIT;
objset_phys_t *osp;
err = arc_read_nolock(NULL, dp->dp_spa, bp,
arc_getbuf_func, bufp,
err = arc_read(NULL, dp->dp_spa, bp, arc_getbuf_func, bufp,
ZIO_PRIORITY_ASYNC_READ, zio_flags, &flags, zb);
if (err) {
scn->scn_phys.scn_errors++;