From ec062f35f20b4a6f908e858c900904923e2955d0 Mon Sep 17 00:00:00 2001 From: Richard Jones Date: Fri, 5 Sep 2014 14:51:15 +0200 Subject: [PATCH 02/13] block.curl: adding 'timeout' option Message-id: <1409928677-32467-2-git-send-email-rjones@redhat.com> Patchwork-id: 60879 O-Subject: [RHEL-7.1 qemu-kvm-rhev PATCH 1/3] block.curl: adding 'timeout' option Bugzilla: 1132569 RH-Acked-by: Markus Armbruster RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Laszlo Ersek From: Daniel Henrique Barboza The curl hardcoded timeout (5 seconds) sometimes is not long enough depending on the remote server configuration and network traffic. The user should be able to set how much long he is willing to wait for the connection. Adding a new option to set this timeout gives the user this flexibility. The previous default timeout of 5 seconds will be used if this option is not present. Reviewed-by: Fam Zheng Signed-off-by: Daniel Henrique Barboza Reviewed-by: Benoit Canet Tested-by: Richard W.M. Jones Signed-off-by: Stefan Hajnoczi (cherry picked from commit 212aefaa53d142baa9a22f5aadd2e72eb916c0c0) --- block/curl.c | 13 ++++++++++++- qemu-options.hx | 10 ++++++++-- 2 files changed, 20 insertions(+), 3 deletions(-) Signed-off-by: Miroslav Rezanina --- block/curl.c | 13 ++++++++++++- qemu-options.hx | 10 ++++++++-- 2 files changed, 20 insertions(+), 3 deletions(-) diff --git a/block/curl.c b/block/curl.c index 79ff2f1..6f45547 100644 --- a/block/curl.c +++ b/block/curl.c @@ -63,6 +63,7 @@ static CURLMcode __curl_multi_socket_action(CURLM *multi_handle, #define CURL_NUM_ACB 8 #define SECTOR_SIZE 512 #define READ_AHEAD_DEFAULT (256 * 1024) +#define CURL_TIMEOUT_DEFAULT 5 #define FIND_RET_NONE 0 #define FIND_RET_OK 1 @@ -71,6 +72,7 @@ static CURLMcode __curl_multi_socket_action(CURLM *multi_handle, #define CURL_BLOCK_OPT_URL "url" #define CURL_BLOCK_OPT_READAHEAD "readahead" #define CURL_BLOCK_OPT_SSLVERIFY "sslverify" +#define CURL_BLOCK_OPT_TIMEOUT "timeout" struct BDRVCURLState; @@ -109,6 +111,7 @@ typedef struct BDRVCURLState { char *url; size_t readahead_size; bool sslverify; + int timeout; bool accept_range; AioContext *aio_context; } BDRVCURLState; @@ -382,7 +385,7 @@ static CURLState *curl_init_state(BDRVCURLState *s) curl_easy_setopt(state->curl, CURLOPT_URL, s->url); curl_easy_setopt(state->curl, CURLOPT_SSL_VERIFYPEER, (long) s->sslverify); - curl_easy_setopt(state->curl, CURLOPT_TIMEOUT, 5); + curl_easy_setopt(state->curl, CURLOPT_TIMEOUT, s->timeout); curl_easy_setopt(state->curl, CURLOPT_WRITEFUNCTION, (void *)curl_read_cb); curl_easy_setopt(state->curl, CURLOPT_WRITEDATA, (void *)state); @@ -489,6 +492,11 @@ static QemuOptsList runtime_opts = { .type = QEMU_OPT_BOOL, .help = "Verify SSL certificate" }, + { + .name = CURL_BLOCK_OPT_TIMEOUT, + .type = QEMU_OPT_NUMBER, + .help = "Curl timeout" + }, { /* end of list */ } }, }; @@ -525,6 +533,9 @@ static int curl_open(BlockDriverState *bs, QDict *options, int flags, goto out_noclean; } + s->timeout = qemu_opt_get_number(opts, CURL_BLOCK_OPT_TIMEOUT, + CURL_TIMEOUT_DEFAULT); + s->sslverify = qemu_opt_get_bool(opts, CURL_BLOCK_OPT_SSLVERIFY, true); file = qemu_opt_get(opts, CURL_BLOCK_OPT_URL); diff --git a/qemu-options.hx b/qemu-options.hx index 81545ae..616dfcd 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2346,6 +2346,11 @@ multiple of 512 bytes. It defaults to 256k. @item sslverify Whether to verify the remote server's certificate when connecting over SSL. It can have the value 'on' or 'off'. It defaults to 'on'. + +@item timeout +Set the timeout in seconds of the CURL connection. This timeout is the time +that CURL waits for a response from the remote server to get the size of the +image to be downloaded. If not set, the default timeout of 5 seconds is used. @end table Note that when passing options to qemu explicitly, @option{driver} is the value @@ -2367,9 +2372,10 @@ qemu-system-x86_64 -drive file=/tmp/Fedora-x86_64-20-20131211.1-sda.qcow2,copy-o @end example Example: boot from an image stored on a VMware vSphere server with a self-signed -certificate using a local overlay for writes and a readahead of 64k +certificate using a local overlay for writes, a readahead of 64k and a timeout +of 10 seconds. @example -qemu-img create -f qcow2 -o backing_file='json:@{"file.driver":"https",, "file.url":"https://user:password@@vsphere.example.com/folder/test/test-flat.vmdk?dcPath=Datacenter&dsName=datastore1",, "file.sslverify":"off",, "file.readahead":"64k"@}' /tmp/test.qcow2 +qemu-img create -f qcow2 -o backing_file='json:@{"file.driver":"https",, "file.url":"https://user:password@@vsphere.example.com/folder/test/test-flat.vmdk?dcPath=Datacenter&dsName=datastore1",, "file.sslverify":"off",, "file.readahead":"64k",, "file.timeout":10@}' /tmp/test.qcow2 qemu-system-x86_64 -drive file=/tmp/test.qcow2 @end example -- 1.8.3.1