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author | Paolo Bonzini <pbonzini@redhat.com> | 2011-10-21 13:17:14 +0200 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2011-12-22 11:53:57 +0100 |
commit | 1486d04a1b41093e5f97f20ca7397e01df055f49 (patch) | |
tree | a429eaba2513cf042b68cf9464f51d1bb8e4d3bd /nbd.c | |
parent | 2c7989a9b13a45963548cf4d89535fe90d809cac (diff) | |
download | hqemu-1486d04a1b41093e5f97f20ca7397e01df055f49.zip hqemu-1486d04a1b41093e5f97f20ca7397e01df055f49.tar.gz |
nbd: add support for NBD_CMD_FLUSH
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'nbd.c')
-rw-r--r-- | nbd.c | 15 |
1 files changed, 14 insertions, 1 deletions
@@ -203,7 +203,8 @@ int nbd_negotiate(int csock, off_t size, uint32_t flags) cpu_to_be64w((uint64_t*)(buf + 8), 0x00420281861253LL); cpu_to_be64w((uint64_t*)(buf + 16), size); cpu_to_be32w((uint32_t*)(buf + 24), - flags | NBD_FLAG_HAS_FLAGS | NBD_FLAG_SEND_FUA); + flags | NBD_FLAG_HAS_FLAGS | NBD_FLAG_SEND_FLUSH | + NBD_FLAG_SEND_FUA); memset(buf + 28, 0, 124); if (write_sync(csock, buf, sizeof(buf)) != sizeof(buf)) { @@ -710,6 +711,18 @@ int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset, TRACE("Request type is DISCONNECT"); errno = 0; return 1; + case NBD_CMD_FLUSH: + TRACE("Request type is FLUSH"); + + ret = bdrv_flush(bs); + if (ret < 0) { + LOG("flush failed"); + reply.error = -ret; + } + + if (nbd_send_reply(csock, &reply) == -1) + return -1; + break; default: LOG("invalid request type (%u) received", request.type); errno = EINVAL; |