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Introduce zero-metadata command

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Add 'zero-metadata' option to *casadm*.
Handle new option.
Add struct for new option.

Signed-off-by: Slawomir Jankowski <slawomir.jankowski@intel.com>
This commit is contained in:
Slawomir Jankowski 2020-05-25 10:54:04 +02:00
parent 0f0ef6a9c4
commit 9750883d99
1 changed files with 55 additions and 0 deletions
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55
casadm/cas_main.c
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@ -1945,6 +1945,51 @@ void io_class_help(app *app_values, cli_command *cmd)
static int handle_help();
struct {
const char *device;
} static zero_params = {
.device = ""
};
static cli_option zero_options[] = {
{'d', "device", "Path to device on which metadata would be cleared", 1, "DEVICE", CLI_OPTION_REQUIRED},
{0}
};
/* Parser of option for zeroing metadata command */
int zero_handle_option(char *opt, const char **arg)
{
if (!strcmp(opt, "device")) {
if(validate_device_name(arg[0]) == FAILURE)
return FAILURE;
zero_params.device = arg[0];
} else {
return FAILURE;
}
return 0;
}
int handle_zero()
{
int cache_device = 0;
cache_device = open(zero_params.device, O_RDONLY);
if (cache_device < 0) {
cas_printf(LOG_ERR, "Couldn't open cache device %s.\n", zero_params.device);
return FAILURE;
}
if (close(cache_device) < 0) {
cas_printf(LOG_ERR, "Couldn't close the cache device.\n");
return FAILURE;
}
return zero_md(zero_params.device);
}
static cli_command cas_commands[] = {
{
.name = "start-cache",
@ -2132,6 +2177,16 @@ static cli_command cas_commands[] = {
.handle = handle_help,
.help = NULL
},
{
.name = "zero-metadata",
.desc = "Clear metadata from caching device",
.long_desc = NULL,
.options = zero_options,
.command_handle_opts = zero_handle_option,
.handle = handle_zero,
.flags = CLI_SU_REQUIRED,
.help = NULL
},
{
.name = "script",
.options = script_params_options,