diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/sheepdog.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/block/sheepdog.c b/block/sheepdog.c index 67ca788d5c..255372eea9 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -377,6 +377,11 @@ typedef struct BDRVSheepdogState { QLIST_HEAD(inflight_aiocb_head, SheepdogAIOCB) inflight_aiocb_head; } BDRVSheepdogState; +typedef struct BDRVSheepdogReopenState { + int fd; + int cache_flags; +} BDRVSheepdogReopenState; + static const char * sd_strerror(int err) { int i; @@ -1486,6 +1491,68 @@ out: return ret; } +static int sd_reopen_prepare(BDRVReopenState *state, BlockReopenQueue *queue, + Error **errp) +{ + BDRVSheepdogState *s = state->bs->opaque; + BDRVSheepdogReopenState *re_s; + int ret = 0; + + re_s = state->opaque = g_new0(BDRVSheepdogReopenState, 1); + + re_s->cache_flags = SD_FLAG_CMD_CACHE; + if (state->flags & BDRV_O_NOCACHE) { + re_s->cache_flags = SD_FLAG_CMD_DIRECT; + } + + re_s->fd = get_sheep_fd(s, errp); + if (re_s->fd < 0) { + ret = re_s->fd; + return ret; + } + + return ret; +} + +static void sd_reopen_commit(BDRVReopenState *state) +{ + BDRVSheepdogReopenState *re_s = state->opaque; + BDRVSheepdogState *s = state->bs->opaque; + + if (s->fd) { + aio_set_fd_handler(s->aio_context, s->fd, NULL, NULL, NULL); + closesocket(s->fd); + } + + s->fd = re_s->fd; + s->cache_flags = re_s->cache_flags; + + g_free(state->opaque); + state->opaque = NULL; + + return; +} + +static void sd_reopen_abort(BDRVReopenState *state) +{ + BDRVSheepdogReopenState *re_s = state->opaque; + BDRVSheepdogState *s = state->bs->opaque; + + if (re_s == NULL) { + return; + } + + if (re_s->fd) { + aio_set_fd_handler(s->aio_context, re_s->fd, NULL, NULL, NULL); + closesocket(re_s->fd); + } + + g_free(state->opaque); + state->opaque = NULL; + + return; +} + static int do_sd_create(BDRVSheepdogState *s, uint32_t *vdi_id, int snapshot, Error **errp) { @@ -2702,6 +2769,9 @@ static BlockDriver bdrv_sheepdog = { .instance_size = sizeof(BDRVSheepdogState), .bdrv_needs_filename = true, .bdrv_file_open = sd_open, + .bdrv_reopen_prepare = sd_reopen_prepare, + .bdrv_reopen_commit = sd_reopen_commit, + .bdrv_reopen_abort = sd_reopen_abort, .bdrv_close = sd_close, .bdrv_create = sd_create, .bdrv_has_zero_init = bdrv_has_zero_init_1, @@ -2735,6 +2805,9 @@ static BlockDriver bdrv_sheepdog_tcp = { .instance_size = sizeof(BDRVSheepdogState), .bdrv_needs_filename = true, .bdrv_file_open = sd_open, + .bdrv_reopen_prepare = sd_reopen_prepare, + .bdrv_reopen_commit = sd_reopen_commit, + .bdrv_reopen_abort = sd_reopen_abort, .bdrv_close = sd_close, .bdrv_create = sd_create, .bdrv_has_zero_init = bdrv_has_zero_init_1, @@ -2768,6 +2841,9 @@ static BlockDriver bdrv_sheepdog_unix = { .instance_size = sizeof(BDRVSheepdogState), .bdrv_needs_filename = true, .bdrv_file_open = sd_open, + .bdrv_reopen_prepare = sd_reopen_prepare, + .bdrv_reopen_commit = sd_reopen_commit, + .bdrv_reopen_abort = sd_reopen_abort, .bdrv_close = sd_close, .bdrv_create = sd_create, .bdrv_has_zero_init = bdrv_has_zero_init_1, |