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-rw-r--r--block/mirror.c4
-rw-r--r--block/qcow2-cache.c63
-rw-r--r--block/qcow2-cluster.c4
-rw-r--r--block/qcow2-refcount.c2
-rw-r--r--block/qcow2.c64
-rw-r--r--block/qcow2.h4
-rw-r--r--block/quorum.c12
-rw-r--r--block/raw-posix.c22
-rw-r--r--block/vhdx.c2
9 files changed, 159 insertions, 18 deletions
diff --git a/block/mirror.c b/block/mirror.c
index 94744432eb..a2589261f5 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -644,9 +644,9 @@ static void mirror_complete(BlockJob *job, Error **errp)
if (s->replaces) {
AioContext *replace_aio_context;
- s->to_replace = check_to_replace_node(s->replaces, &local_err);
+ s->to_replace = bdrv_find_node(s->replaces);
if (!s->to_replace) {
- error_propagate(errp, local_err);
+ error_setg(errp, "Node name '%s' not found", s->replaces);
return;
}
diff --git a/block/qcow2-cache.c b/block/qcow2-cache.c
index 53b8afc3d3..046f5b8e48 100644
--- a/block/qcow2-cache.c
+++ b/block/qcow2-cache.c
@@ -22,16 +22,24 @@
* THE SOFTWARE.
*/
+/* Needed for CONFIG_MADVISE */
+#include "config-host.h"
+
+#if defined(CONFIG_MADVISE) || defined(CONFIG_POSIX_MADVISE)
+#include <sys/mman.h>
+#endif
+
#include "block/block_int.h"
#include "qemu-common.h"
+#include "qemu/osdep.h"
#include "qcow2.h"
#include "trace.h"
typedef struct Qcow2CachedTable {
int64_t offset;
- bool dirty;
uint64_t lru_counter;
int ref;
+ bool dirty;
} Qcow2CachedTable;
struct Qcow2Cache {
@@ -41,6 +49,7 @@ struct Qcow2Cache {
bool depends_on_flush;
void *table_array;
uint64_t lru_counter;
+ uint64_t cache_clean_lru_counter;
};
static inline void *qcow2_cache_get_table_addr(BlockDriverState *bs,
@@ -60,6 +69,56 @@ static inline int qcow2_cache_get_table_idx(BlockDriverState *bs,
return idx;
}
+static void qcow2_cache_table_release(BlockDriverState *bs, Qcow2Cache *c,
+ int i, int num_tables)
+{
+#if QEMU_MADV_DONTNEED != QEMU_MADV_INVALID
+ BDRVQcowState *s = bs->opaque;
+ void *t = qcow2_cache_get_table_addr(bs, c, i);
+ int align = getpagesize();
+ size_t mem_size = (size_t) s->cluster_size * num_tables;
+ size_t offset = QEMU_ALIGN_UP((uintptr_t) t, align) - (uintptr_t) t;
+ size_t length = QEMU_ALIGN_DOWN(mem_size - offset, align);
+ if (length > 0) {
+ qemu_madvise((uint8_t *) t + offset, length, QEMU_MADV_DONTNEED);
+ }
+#endif
+}
+
+static inline bool can_clean_entry(Qcow2Cache *c, int i)
+{
+ Qcow2CachedTable *t = &c->entries[i];
+ return t->ref == 0 && !t->dirty && t->offset != 0 &&
+ t->lru_counter <= c->cache_clean_lru_counter;
+}
+
+void qcow2_cache_clean_unused(BlockDriverState *bs, Qcow2Cache *c)
+{
+ int i = 0;
+ while (i < c->size) {
+ int to_clean = 0;
+
+ /* Skip the entries that we don't need to clean */
+ while (i < c->size && !can_clean_entry(c, i)) {
+ i++;
+ }
+
+ /* And count how many we can clean in a row */
+ while (i < c->size && can_clean_entry(c, i)) {
+ c->entries[i].offset = 0;
+ c->entries[i].lru_counter = 0;
+ i++;
+ to_clean++;
+ }
+
+ if (to_clean > 0) {
+ qcow2_cache_table_release(bs, c, i - to_clean, to_clean);
+ }
+ }
+
+ c->cache_clean_lru_counter = c->lru_counter;
+}
+
Qcow2Cache *qcow2_cache_create(BlockDriverState *bs, int num_tables)
{
BDRVQcowState *s = bs->opaque;
@@ -237,6 +296,8 @@ int qcow2_cache_empty(BlockDriverState *bs, Qcow2Cache *c)
c->entries[i].lru_counter = 0;
}
+ qcow2_cache_table_release(bs, c, 0, c->size);
+
c->lru_counter = 0;
return 0;
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index b43f186eb8..61309aec56 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -498,7 +498,7 @@ int qcow2_get_cluster_offset(BlockDriverState *bs, uint64_t offset,
*cluster_offset = 0;
- /* seek the the l2 offset in the l1 table */
+ /* seek to the l2 offset in the l1 table */
l1_index = offset >> l1_bits;
if (l1_index >= s->l1_size) {
@@ -612,7 +612,7 @@ static int get_cluster_table(BlockDriverState *bs, uint64_t offset,
uint64_t *l2_table = NULL;
int ret;
- /* seek the the l2 offset in the l1 table */
+ /* seek to the l2 offset in the l1 table */
l1_index = offset >> (s->l2_bits + s->cluster_bits);
if (l1_index >= s->l1_size) {
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index b0ee42d81b..d8f06458c9 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -1294,7 +1294,7 @@ static int realloc_refcount_array(BDRVQcowState *s, void **array,
/*
* Increases the refcount for a range of clusters in a given refcount table.
* This is used to construct a temporary refcount table out of L1 and L2 tables
- * which can be compared the the refcount table saved in the image.
+ * which can be compared to the refcount table saved in the image.
*
* Modifies the number of errors in res.
*/
diff --git a/block/qcow2.c b/block/qcow2.c
index 76c331b387..ea34ae2da5 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -467,6 +467,11 @@ static QemuOptsList qcow2_runtime_opts = {
.type = QEMU_OPT_SIZE,
.help = "Maximum refcount block cache size",
},
+ {
+ .name = QCOW2_OPT_CACHE_CLEAN_INTERVAL,
+ .type = QEMU_OPT_NUMBER,
+ .help = "Clean unused cache entries after this time (in seconds)",
+ },
{ /* end of list */ }
},
};
@@ -482,6 +487,49 @@ static const char *overlap_bool_option_names[QCOW2_OL_MAX_BITNR] = {
[QCOW2_OL_INACTIVE_L2_BITNR] = QCOW2_OPT_OVERLAP_INACTIVE_L2,
};
+static void cache_clean_timer_cb(void *opaque)
+{
+ BlockDriverState *bs = opaque;
+ BDRVQcowState *s = bs->opaque;
+ qcow2_cache_clean_unused(bs, s->l2_table_cache);
+ qcow2_cache_clean_unused(bs, s->refcount_block_cache);
+ timer_mod(s->cache_clean_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) +
+ (int64_t) s->cache_clean_interval * 1000);
+}
+
+static void cache_clean_timer_init(BlockDriverState *bs, AioContext *context)
+{
+ BDRVQcowState *s = bs->opaque;
+ if (s->cache_clean_interval > 0) {
+ s->cache_clean_timer = aio_timer_new(context, QEMU_CLOCK_VIRTUAL,
+ SCALE_MS, cache_clean_timer_cb,
+ bs);
+ timer_mod(s->cache_clean_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) +
+ (int64_t) s->cache_clean_interval * 1000);
+ }
+}
+
+static void cache_clean_timer_del(BlockDriverState *bs)
+{
+ BDRVQcowState *s = bs->opaque;
+ if (s->cache_clean_timer) {
+ timer_del(s->cache_clean_timer);
+ timer_free(s->cache_clean_timer);
+ s->cache_clean_timer = NULL;
+ }
+}
+
+static void qcow2_detach_aio_context(BlockDriverState *bs)
+{
+ cache_clean_timer_del(bs);
+}
+
+static void qcow2_attach_aio_context(BlockDriverState *bs,
+ AioContext *new_context)
+{
+ cache_clean_timer_init(bs, new_context);
+}
+
static void read_cache_sizes(BlockDriverState *bs, QemuOpts *opts,
uint64_t *l2_cache_size,
uint64_t *refcount_cache_size, Error **errp)
@@ -555,6 +603,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
const char *opt_overlap_check, *opt_overlap_check_template;
int overlap_check_template = 0;
uint64_t l2_cache_size, refcount_cache_size;
+ uint64_t cache_clean_interval;
ret = bdrv_pread(bs->file, 0, &header, sizeof(header));
if (ret < 0) {
@@ -848,6 +897,16 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
+ cache_clean_interval =
+ qemu_opt_get_number(opts, QCOW2_OPT_CACHE_CLEAN_INTERVAL, 0);
+ if (cache_clean_interval > UINT_MAX) {
+ error_setg(errp, "Cache clean interval too big");
+ ret = -EINVAL;
+ goto fail;
+ }
+ s->cache_clean_interval = cache_clean_interval;
+ cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
+
s->cluster_cache = g_malloc(s->cluster_size);
/* one more sector for decompressed data alignment */
s->cluster_data = qemu_try_blockalign(bs->file, QCOW_MAX_CRYPT_CLUSTERS
@@ -1013,6 +1072,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
qemu_vfree(s->l1_table);
/* else pre-write overlap checks in cache_destroy may crash */
s->l1_table = NULL;
+ cache_clean_timer_del(bs);
if (s->l2_table_cache) {
qcow2_cache_destroy(bs, s->l2_table_cache);
}
@@ -1471,6 +1531,7 @@ static void qcow2_close(BlockDriverState *bs)
}
}
+ cache_clean_timer_del(bs);
qcow2_cache_destroy(bs, s->l2_table_cache);
qcow2_cache_destroy(bs, s->refcount_block_cache);
@@ -2977,6 +3038,9 @@ BlockDriver bdrv_qcow2 = {
.create_opts = &qcow2_create_opts,
.bdrv_check = qcow2_check,
.bdrv_amend_options = qcow2_amend_options,
+
+ .bdrv_detach_aio_context = qcow2_detach_aio_context,
+ .bdrv_attach_aio_context = qcow2_attach_aio_context,
};
static void bdrv_qcow2_init(void)
diff --git a/block/qcow2.h b/block/qcow2.h
index 72e132838a..71dafd6dc9 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -96,6 +96,7 @@
#define QCOW2_OPT_CACHE_SIZE "cache-size"
#define QCOW2_OPT_L2_CACHE_SIZE "l2-cache-size"
#define QCOW2_OPT_REFCOUNT_CACHE_SIZE "refcount-cache-size"
+#define QCOW2_OPT_CACHE_CLEAN_INTERVAL "cache-clean-interval"
typedef struct QCowHeader {
uint32_t magic;
@@ -239,6 +240,8 @@ typedef struct BDRVQcowState {
Qcow2Cache* l2_table_cache;
Qcow2Cache* refcount_block_cache;
+ QEMUTimer *cache_clean_timer;
+ unsigned cache_clean_interval;
uint8_t *cluster_cache;
uint8_t *cluster_data;
@@ -581,6 +584,7 @@ int qcow2_cache_set_dependency(BlockDriverState *bs, Qcow2Cache *c,
Qcow2Cache *dependency);
void qcow2_cache_depends_on_flush(Qcow2Cache *c);
+void qcow2_cache_clean_unused(BlockDriverState *bs, Qcow2Cache *c);
int qcow2_cache_empty(BlockDriverState *bs, Qcow2Cache *c);
int qcow2_cache_get(BlockDriverState *bs, Qcow2Cache *c, uint64_t offset,
diff --git a/block/quorum.c b/block/quorum.c
index 2f6c45f760..8fe53b4272 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -889,6 +889,12 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags,
}
s->threshold = qemu_opt_get_number(opts, QUORUM_OPT_VOTE_THRESHOLD, 0);
+ /* and validate it against s->num_children */
+ ret = quorum_valid_threshold(s->threshold, s->num_children, &local_err);
+ if (ret < 0) {
+ goto exit;
+ }
+
ret = parse_read_pattern(qemu_opt_get(opts, QUORUM_OPT_READ_PATTERN));
if (ret < 0) {
error_setg(&local_err, "Please set read-pattern as fifo or quorum");
@@ -897,12 +903,6 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags,
s->read_pattern = ret;
if (s->read_pattern == QUORUM_READ_PATTERN_QUORUM) {
- /* and validate it against s->num_children */
- ret = quorum_valid_threshold(s->threshold, s->num_children, &local_err);
- if (ret < 0) {
- goto exit;
- }
-
/* is the driver in blkverify mode */
if (qemu_opt_get_bool(opts, QUORUM_OPT_BLKVERIFY, false) &&
s->num_children == 2 && s->threshold == 2) {
diff --git a/block/raw-posix.c b/block/raw-posix.c
index 855febed52..30df8adf7f 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -670,11 +670,17 @@ static int raw_reopen_prepare(BDRVReopenState *state,
/* If we cannot use fcntl, or fcntl failed, fall back to qemu_open() */
if (raw_s->fd == -1) {
- assert(!(raw_s->open_flags & O_CREAT));
- raw_s->fd = qemu_open(state->bs->filename, raw_s->open_flags);
- if (raw_s->fd == -1) {
- error_setg_errno(errp, errno, "Could not reopen file");
- ret = -1;
+ const char *normalized_filename = state->bs->filename;
+ ret = raw_normalize_devicepath(&normalized_filename);
+ if (ret < 0) {
+ error_setg_errno(errp, -ret, "Could not normalize device path");
+ } else {
+ assert(!(raw_s->open_flags & O_CREAT));
+ raw_s->fd = qemu_open(normalized_filename, raw_s->open_flags);
+ if (raw_s->fd == -1) {
+ error_setg_errno(errp, errno, "Could not reopen file");
+ ret = -1;
+ }
}
}
@@ -2314,6 +2320,12 @@ static int hdev_create(const char *filename, QemuOpts *opts,
(void)has_prefix;
+ ret = raw_normalize_devicepath(&filename);
+ if (ret < 0) {
+ error_setg_errno(errp, -ret, "Could not normalize device path");
+ return ret;
+ }
+
/* Read out options */
total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
BDRV_SECTOR_SIZE);
diff --git a/block/vhdx.c b/block/vhdx.c
index 0776de7174..f05c7a9de3 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -1454,7 +1454,7 @@ static int vhdx_create_new_metadata(BlockDriverState *bs,
uint32_t offset = 0;
void *buffer = NULL;
void *entry_buffer;
- VHDXMetadataTableHeader *md_table;;
+ VHDXMetadataTableHeader *md_table;
VHDXMetadataTableEntry *md_table_entry;
/* Metadata entries */
generated by cgit v1.2.3 (git 2.26.2) at 2025-03-01 14:41:00 +0000