thebestvibedev/tromcho.net
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement client writeback cache

Browse Source 
- Disabled by default, enable with client_enable_writeback=true
- Even then only enabled in FIO when -direct is disabled and in QEMU when
  block device cache is enabled in settings
- Can also be enabled in other clients like vitastor-cli using parameter
  client_writeback_allowed=true, but not recommended
This commit is contained in:
Vitaliy Filippov
2023-09-16 17:52:17 +03:00
parent cd543a90bc
commit 38db53f5ee
14 changed files with 999 additions and 360 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/fio_cluster.cpp
+31 -2
View File
@@ -24,6 +24,7 @@
#include <netinet/tcp.h>
#include <vector>
#include <string>
#include "vitastor_c.h"
#include "fio_headers.h"
@@ -203,6 +204,15 @@ static void watch_callback(void *opaque, long watch)
bsd->watch = (void*)watch;
}
static void opt_push(std::vector<char *> & options, const char *opt, const char *value)
{
if (value)
{
options.push_back(strdup(opt));
options.push_back(strdup(value));
}
}
static int sec_setup(struct thread_data *td)
{
sec_options *o = (sec_options*)td->eo;
@@ -254,8 +264,27 @@ static int sec_setup(struct thread_data *td)
{
o->inode = 0;
}
bsd->cli = vitastor_c_create_uring(o->config_path, o->etcd_host, o->etcd_prefix,
o->use_rdma, o->rdma_device, o->rdma_port_num, o->rdma_gid_index, o->rdma_mtu, o->cluster_log);
std::vector<char *> options;
opt_push(options, "config_path", o->config_path);
opt_push(options, "etcd_address", o->etcd_host);
opt_push(options, "etcd_prefix", o->etcd_prefix);
if (o->use_rdma != -1)
opt_push(options, "use_rdma", std::to_string(o->use_rdma).c_str());
opt_push(options, "rdma_device", o->rdma_device);
if (o->rdma_port_num)
opt_push(options, "rdma_port_num", std::to_string(o->rdma_port_num).c_str());
if (o->rdma_gid_index)
opt_push(options, "rdma_gid_index", std::to_string(o->rdma_gid_index).c_str());
if (o->rdma_mtu)
opt_push(options, "rdma_mtu", std::to_string(o->rdma_mtu).c_str());
if (o->cluster_log)
opt_push(options, "log_level", std::to_string(o->cluster_log).c_str());
// allow writeback caching if -direct is not set
opt_push(options, "client_writeback_allowed", td->o.odirect ? "0" : "1");
bsd->cli = vitastor_c_create_uring_json((const char**)options.data(), options.size());
for (auto opt: options)
free(opt);
options.clear();
if (o->image)
{
bsd->watch = NULL;