Zone descriptor extension data is host definied data that is associated with each zone. Add zone descriptor extensions to zonedmeta struct.
Signed-off-by: Sam Li <faithilike...@gmail.com> --- block/qcow2.c | 70 +++++++++++++++++++++++++++++--- block/qcow2.h | 2 + include/block/block_int-common.h | 6 +++ qapi/block-core.json | 4 ++ 4 files changed, 76 insertions(+), 6 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index db28585b82..5098edf656 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -448,9 +448,9 @@ qcow2_refresh_zonedmeta(BlockDriverState *bs) { int ret; BDRVQcow2State *s = bs->opaque; - uint64_t wps_size = s->zoned_header.zonedmeta_size; + uint64_t wps_size = s->zoned_header.zonedmeta_size - + s->zded_size; g_autofree uint64_t *temp; - temp = g_new(uint64_t, wps_size); ret = bdrv_pread(bs->file, s->zoned_header.zonedmeta_offset, wps_size, temp, 0); @@ -459,7 +459,17 @@ qcow2_refresh_zonedmeta(BlockDriverState *bs) return ret; } + g_autofree uint8_t *zded = NULL; + zded = g_try_malloc0(s->zded_size); + ret = bdrv_pread(bs->file, s->zoned_header.zonedmeta_offset + wps_size, + s->zded_size, zded, 0); + if (ret < 0) { + error_report("Can not read zded"); + return ret; + } + memcpy(bs->wps->wp, temp, wps_size); + memcpy(bs->zd_extensions, zded, s->zded_size); return 0; } @@ -520,6 +530,19 @@ qcow2_check_zone_options(Qcow2ZonedHeaderExtension *zone_opt) zone_opt->max_open_zones = sequential_zones; } + if (zone_opt->zd_extension_size) { + if (zone_opt->zd_extension_size & 0x3f) { + error_report("zone descriptor extension size must be a " + "multiple of 64B"); + return false; + } + + if ((zone_opt->zd_extension_size >> 6) > 0xff) { + error_report("Zone descriptor extension size is too large"); + return false; + } + } + return true; } return false; @@ -784,6 +807,8 @@ qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, zoned_ext.conventional_zones = be32_to_cpu(zoned_ext.conventional_zones); zoned_ext.nr_zones = be32_to_cpu(zoned_ext.nr_zones); + zoned_ext.zd_extension_size = + be32_to_cpu(zoned_ext.zd_extension_size); zoned_ext.max_open_zones = be32_to_cpu(zoned_ext.max_open_zones); zoned_ext.max_active_zones = be32_to_cpu(zoned_ext.max_active_zones); @@ -794,7 +819,8 @@ qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset, zoned_ext.zonedmeta_size = be64_to_cpu(zoned_ext.zonedmeta_size); s->zoned_header = zoned_ext; bs->wps = g_malloc(sizeof(BlockZoneWps) - + s->zoned_header.zonedmeta_size); + + zoned_ext.zonedmeta_size - s->zded_size); + bs->zd_extensions = g_malloc0(s->zded_size); ret = qcow2_refresh_zonedmeta(bs); if (ret < 0) { return ret; @@ -2370,6 +2396,7 @@ static void qcow2_refresh_limits(BlockDriverState *bs, Error **errp) bs->bl.zone_size = s->zoned_header.zone_size; bs->bl.zone_capacity = s->zoned_header.zone_capacity; bs->bl.write_granularity = BDRV_SECTOR_SIZE; + bs->bl.zd_extension_size = s->zoned_header.zd_extension_size; } static int GRAPH_UNLOCKED @@ -3621,6 +3648,8 @@ int qcow2_update_header(BlockDriverState *bs) .conventional_zones = cpu_to_be32(s->zoned_header.conventional_zones), .nr_zones = cpu_to_be32(s->zoned_header.nr_zones), + .zd_extension_size = + cpu_to_be32(s->zoned_header.zd_extension_size), .max_open_zones = cpu_to_be32(s->zoned_header.max_open_zones), .max_active_zones = cpu_to_be32(s->zoned_header.max_active_zones), @@ -4373,6 +4402,15 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp) } s->zoned_header.max_append_bytes = zone_host_managed->max_append_bytes; + uint64_t zded_size = 0; + if (zone_host_managed->has_descriptor_extension_size) { + s->zoned_header.zd_extension_size = + zone_host_managed->descriptor_extension_size; + zded_size = s->zoned_header.zd_extension_size * + bs->bl.nr_zones; + } + s->zded_size = zded_size; + if (!qcow2_check_zone_options(&s->zoned_header)) { s->zoned_header.zoned = BLK_Z_NONE; ret = -EINVAL; @@ -4380,7 +4418,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp) } uint32_t nrz = s->zoned_header.nr_zones; - zoned_meta_size = sizeof(uint64_t) * nrz; + zoned_meta_size = sizeof(uint64_t) * nrz + zded_size; g_autofree uint64_t *meta = NULL; meta = g_new0(uint64_t, nrz); @@ -4412,12 +4450,25 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp) error_setg_errno(errp, -ret, "Could not zero fill zoned metadata"); goto unlock; } - ret = bdrv_pwrite(blk_bs(blk)->file, offset, zoned_meta_size, meta, 0); + + ret = bdrv_pwrite(blk_bs(blk)->file, offset, + zoned_meta_size - zded_size, meta, 0); if (ret < 0) { error_setg_errno(errp, -ret, "Could not write zoned metadata " "to disk"); goto unlock; } + + if (zone_host_managed->has_descriptor_extension_size) { + /* Initialize zone descriptor extensions */ + ret = bdrv_co_pwrite_zeroes(blk_bs(blk)->file, offset + zded_size, + zded_size, 0); + if (ret < 0) { + error_setg_errno(errp, -ret, "Could not write zone descriptor" + "extensions to disk"); + goto unlock; + } + } } else { s->zoned_header.zoned = BLK_Z_NONE; } @@ -4562,6 +4613,7 @@ qcow2_co_create_opts(BlockDriver *drv, const char *filename, QemuOpts *opts, { BLOCK_OPT_MAX_OPEN_ZONES, "zone.max-open-zones" }, { BLOCK_OPT_MAX_ACTIVE_ZONES, "zone.max-active-zones" }, { BLOCK_OPT_MAX_APPEND_BYTES, "zone.max-append-bytes" }, + { BLOCK_OPT_ZD_EXT_SIZE, "zone.descriptor-extension-size" }, { NULL, NULL }, }; @@ -7126,7 +7178,13 @@ static QemuOptsList qcow2_create_opts = { .name = BLOCK_OPT_MAX_OPEN_ZONES, \ .type = QEMU_OPT_NUMBER, \ .help = "max open zones", \ - }, + }, \ + { \ + .name = BLOCK_OPT_ZD_EXT_SIZE, \ + .type = QEMU_OPT_SIZE, \ + .help = "zone descriptor extension size (defaults " \ + "to 0, must be a multiple of 64 bytes)", \ + }, \ QCOW_COMMON_OPTIONS, { /* end of list */ } } diff --git a/block/qcow2.h b/block/qcow2.h index 7f37bb4034..b7a8f4f4b6 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -249,6 +249,7 @@ typedef struct Qcow2ZonedHeaderExtension { uint32_t max_append_bytes; uint64_t zonedmeta_size; uint64_t zonedmeta_offset; + uint32_t zd_extension_size; /* must be multiple of 64 B */ } QEMU_PACKED Qcow2ZonedHeaderExtension; typedef struct Qcow2ZoneListEntry { @@ -456,6 +457,7 @@ typedef struct BDRVQcow2State { uint32_t nr_zones_exp_open; uint32_t nr_zones_imp_open; uint32_t nr_zones_closed; + uint64_t zded_size; } BDRVQcow2State; typedef struct Qcow2COWRegion { diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index d48486f344..825b8dac55 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -64,6 +64,7 @@ #define BLOCK_OPT_MAX_APPEND_BYTES "zone.max_append_bytes" #define BLOCK_OPT_MAX_ACTIVE_ZONES "zone.max_active_zones" #define BLOCK_OPT_MAX_OPEN_ZONES "zone.max_open_zones" +#define BLOCK_OPT_ZD_EXT_SIZE "zd_extension_size" #define BLOCK_PROBE_BUF_SIZE 512 @@ -912,6 +913,9 @@ typedef struct BlockLimits { uint32_t max_active_zones; uint32_t write_granularity; + + /* size of data that is associated with a zone in bytes */ + uint32_t zd_extension_size; } BlockLimits; typedef struct BdrvOpBlocker BdrvOpBlocker; @@ -1268,6 +1272,8 @@ struct BlockDriverState { /* array of write pointers' location of each zone in the zoned device. */ BlockZoneWps *wps; + + uint8_t *zd_extensions; }; struct BlockBackendRootState { diff --git a/qapi/block-core.json b/qapi/block-core.json index e2e0ec21a5..485533546a 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -5077,12 +5077,16 @@ # append request that can be issued to the device. It must be # 512-byte aligned and less than the zone capacity. # +# @descriptor-extension-size: The size of zone descriptor extension +# data. Must be a multiple of 64 bytes (default 0) +# # Since 8.2 ## { 'struct': 'Qcow2ZoneHostManaged', 'data': { '*size': 'size', '*capacity': 'size', '*conventional-zones': 'uint32', + '*descriptor-extension-size': 'size', '*max-open-zones': 'uint32', '*max-active-zones': 'uint32', '*max-append-bytes': 'size' } } -- 2.40.1