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Redesign failover standby management

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Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga
2021-12-17 09:23:37 +01:00
parent 4333f5f62c
commit 63bab9584c
11 changed files with 481 additions and 203 deletions
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46
casadm/cas_lib.c
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@@ -774,7 +774,7 @@ struct cache_device *get_cache_device(const struct kcas_cache_info *info, bool b
cache_size = sizeof(*cache);
cache_size += info->info.core_count * sizeof(cache->cores[0]);
if (info->info.failover_detached)
if (info->info.standby_detached)
return NULL;
cache = (struct cache_device *) malloc(cache_size);
@@ -2993,24 +2993,50 @@ int cas_ioctl(int id, void *data)
}
int failover_detach(int cache_id)
int standby_init(int cache_id, ocf_cache_line_size_t line_size,
const char *cache_device, int force)
{
struct kcas_failover_detach data = {.cache_id = cache_id};
return cas_ioctl(KCAS_IOCTL_FAILOVER_DETACH, &data);
return start_cache(cache_id,
CACHE_INIT_STANDBY_NEW,
cache_device,
ocf_cache_mode_default,
line_size,
force);
}
int failover_activate(int cache_id, const char *cache_device)
int standby_load(int cache_id, ocf_cache_line_size_t line_size,
const char *cache_device)
{
struct kcas_failover_activate data = {.cache_id = cache_id};
return start_cache(cache_id,
CACHE_INIT_STANDBY_LOAD,
cache_device,
ocf_cache_mode_default,
line_size,
0);
}
if (set_device_path(data.cache_path, sizeof(data.cache_path),
int standby_detach(int cache_id)
{
struct kcas_standby_detach cmd = {
.cache_id = cache_id
};
return cas_ioctl(KCAS_IOCTL_STANDBY_DETACH, &cmd);
}
int standby_activate(int cache_id, const char *cache_device)
{
struct kcas_standby_activate cmd = {
.cache_id = cache_id
};
if (set_device_path(cmd.cache_path, sizeof(cmd.cache_path),
cache_device, MAX_STR_LEN) != SUCCESS) {
return FAILURE;
}
if (cas_ioctl(KCAS_IOCTL_FAILOVER_ACTIVATE, &data) != SUCCESS) {
print_err(data.ext_err_code ? : KCAS_ERR_SYSTEM);
if (cas_ioctl(KCAS_IOCTL_STANDBY_ACTIVATE, &cmd) != SUCCESS) {
print_err(cmd.ext_err_code ? : KCAS_ERR_SYSTEM);
return FAILURE;
}