#include "mdt_internal.h"
/**
- * data passed to llog_cat_process() callback
- * to find compatible requests
- */
-struct hsm_compat_data_cb {
- struct coordinator *cdt;
- struct hsm_action_list *hal;
-};
-
-/**
* llog_cat_process() callback, used to find record
* compatibles with a new hsm_action_list
* \param env [IN] environment
* \param llh [IN] llog handle
* \param hdr [IN] llog record
- * \param data [IN] cb data = hsm_compat_data_cb
+ * \param data [IN] cb data = hal
* \retval 0 success
* \retval -ve failure
*/
struct llog_handle *llh,
struct llog_rec_hdr *hdr, void *data)
{
- struct llog_agent_req_rec *larr;
- struct hsm_compat_data_cb *hcdcb;
- struct hsm_action_item *hai;
- int i;
+ struct llog_agent_req_rec *larr = (struct llog_agent_req_rec *)hdr;
+ struct hsm_action_list *hal = data;
+ struct hsm_action_item *hai;
+ int i;
ENTRY;
- larr = (struct llog_agent_req_rec *)hdr;
- hcdcb = data;
/* a compatible request must be WAITING or STARTED
* and not a cancel */
if ((larr->arr_status != ARS_WAITING &&
larr->arr_hai.hai_action == HSMA_CANCEL)
RETURN(0);
- hai = hai_first(hcdcb->hal);
- for (i = 0; i < hcdcb->hal->hal_count; i++, hai = hai_next(hai)) {
+ hai = hai_first(hal);
+ for (i = 0; i < hal->hal_count; i++, hai = hai_next(hai)) {
/* if request is a CANCEL:
* if cookie set in the request, there is no need to find a
* compatible one, the cookie in the request is directly used.
if (!lu_fid_eq(&hai->hai_fid, &larr->arr_hai.hai_fid))
continue;
- /* HSMA_NONE is used to find running request for some FID */
- if (hai->hai_action == HSMA_NONE) {
- hcdcb->hal->hal_archive_id = larr->arr_archive_id;
- hcdcb->hal->hal_flags = larr->arr_flags;
- *hai = larr->arr_hai;
- continue;
- }
/* in V1 we do not manage partial transfer
* so extent is always whole file
*/
hai->hai_cookie = larr->arr_hai.hai_cookie;
/* we read the archive number from the request we cancel */
- if (hai->hai_action == HSMA_CANCEL &&
- hcdcb->hal->hal_archive_id == 0)
- hcdcb->hal->hal_archive_id = larr->arr_archive_id;
+ if (hai->hai_action == HSMA_CANCEL && hal->hal_archive_id == 0)
+ hal->hal_archive_id = larr->arr_archive_id;
}
RETURN(0);
}
static int hsm_find_compatible(const struct lu_env *env, struct mdt_device *mdt,
struct hsm_action_list *hal)
{
- struct hsm_action_item *hai;
- struct hsm_compat_data_cb hcdcb;
- int rc, i, ok_cnt;
+ struct hsm_action_item *hai;
+ int rc = 0, i;
+ bool check = false;
ENTRY;
- ok_cnt = 0;
hai = hai_first(hal);
for (i = 0; i < hal->hal_count; i++, hai = hai_next(hai)) {
- /* in a cancel request hai_cookie may be set by caller to
- * show the request to be canceled
- * if not we need to search by FID
+ /* We only support ARCHIVE, RESTORE, REMOVE and CANCEL here. */
+ if (hai->hai_action == HSMA_NONE)
+ RETURN(-EINVAL);
+
+ /* In a cancel request hai_cookie may be set by caller to show
+ * the request to be canceled. If there is at least one cancel
+ * request that does not have a cookie set we need to search by
+ * FID; we can skip checking in all other cases
*/
- if (hai->hai_action == HSMA_CANCEL && hai->hai_cookie != 0)
- ok_cnt++;
- else
- hai->hai_cookie = 0;
+ if (hai->hai_action == HSMA_CANCEL && hai->hai_cookie == 0) {
+ check = true;
+ break;
+ }
}
- /* if all requests are cancel with cookie, no need to find compatible */
- if (ok_cnt == hal->hal_count)
- RETURN(0);
-
- hcdcb.cdt = &mdt->mdt_coordinator;
- hcdcb.hal = hal;
-
- rc = cdt_llog_process(env, mdt, hsm_find_compatible_cb, &hcdcb, 0, 0,
- READ);
+ if (check)
+ rc = cdt_llog_process(env, mdt, hsm_find_compatible_cb, hal, 0,
+ 0, READ);
RETURN(rc);
}
ENTRY;
/* no coordinator started, so we cannot serve requests */
- if (cdt->cdt_state == CDT_STOPPED)
+ if (cdt->cdt_state == CDT_STOPPED || cdt->cdt_state == CDT_INIT)
RETURN(-EAGAIN);
if (!hal_is_sane(hal))
RETURN(is_running);
}
+struct hsm_get_action_data {
+ const struct lu_fid *hgad_fid;
+ struct hsm_action_item hgad_hai;
+ enum agent_req_status hgad_status;
+};
+
+static int hsm_get_action_cb(const struct lu_env *env,
+ struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct llog_agent_req_rec *larr = (struct llog_agent_req_rec *)hdr;
+ struct hsm_get_action_data *hgad = data;
+
+ /* A compatible request must be WAITING or STARTED and not a
+ * cancel. */
+ if ((larr->arr_status != ARS_WAITING &&
+ larr->arr_status != ARS_STARTED) ||
+ larr->arr_hai.hai_action == HSMA_CANCEL ||
+ !lu_fid_eq(&larr->arr_hai.hai_fid, hgad->hgad_fid))
+ RETURN(0);
+
+ hgad->hgad_hai = larr->arr_hai;
+ hgad->hgad_status = larr->arr_status;
+
+ RETURN(LLOG_PROC_BREAK);
+}
+
/**
- * get registered action on a FID list
+ * get registered action on a FID
* \param mti [IN]
- * \param hal [IN/OUT] requests
+ * \param fid [IN]
+ * \param action [OUT]
+ * \param status [OUT]
+ * \param extent [OUT]
* \retval 0 success
* \retval -ve failure
*/
-int mdt_hsm_get_actions(struct mdt_thread_info *mti,
- struct hsm_action_list *hal)
+int mdt_hsm_get_action(struct mdt_thread_info *mti,
+ const struct lu_fid *fid,
+ enum hsm_copytool_action *action,
+ enum agent_req_status *status,
+ struct hsm_extent *extent)
{
- struct mdt_device *mdt = mti->mti_mdt;
- struct coordinator *cdt = &mdt->mdt_coordinator;
- struct hsm_action_item *hai;
- int i, rc;
+ const struct lu_env *env = mti->mti_env;
+ struct mdt_device *mdt = mti->mti_mdt;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ struct hsm_get_action_data hgad = {
+ .hgad_fid = fid,
+ .hgad_hai.hai_action = HSMA_NONE,
+ };
+ struct cdt_agent_req *car;
+ int rc;
ENTRY;
- hai = hai_first(hal);
- for (i = 0; i < hal->hal_count; i++, hai = hai_next(hai)) {
- hai->hai_action = HSMA_NONE;
- if (!fid_is_sane(&hai->hai_fid))
- RETURN(-EINVAL);
- }
-
/* 1st we search in recorded requests */
- rc = hsm_find_compatible(mti->mti_env, mdt, hal);
- /* if llog file is not created, no action is recorded */
- if (rc == -ENOENT)
+ rc = cdt_llog_process(env, mdt, hsm_get_action_cb, &hgad, 0, 0, READ);
+ if (rc < 0)
+ RETURN(rc);
+
+ *action = hgad.hgad_hai.hai_action;
+ *extent = hgad.hgad_hai.hai_extent;
+ *status = hgad.hgad_status;
+
+ if (*action == HSMA_NONE || *status != ARS_STARTED)
RETURN(0);
- if (rc)
- RETURN(rc);
+ car = mdt_cdt_find_request(cdt, hgad.hgad_hai.hai_cookie);
+ if (car != NULL) {
+ __u64 data_moved;
- /* 2nd we search if the request are running
- * cookie is cleared to tell to caller, the request is
- * waiting
- * we could in place use the record status, but in the future
- * we may want do give back dynamic informations on the
- * running request
- */
- hai = hai_first(hal);
- for (i = 0; i < hal->hal_count; i++, hai = hai_next(hai)) {
- struct cdt_agent_req *car;
-
- car = mdt_cdt_find_request(cdt, hai->hai_cookie);
- if (car == NULL) {
- hai->hai_cookie = 0;
- } else {
- __u64 data_moved;
-
- mdt_cdt_get_work_done(car, &data_moved);
- /* this is just to give the volume of data moved
- * it means data_moved data have been moved from the
- * original request but we do not know which one
- */
- hai->hai_extent.length = data_moved;
- mdt_cdt_put_request(car);
- }
+ mdt_cdt_get_work_done(car, &data_moved);
+ /* this is just to give the volume of data moved
+ * it means data_moved data have been moved from the
+ * original request but we do not know which one
+ */
+ extent->length = data_moved;
+ mdt_cdt_put_request(car);
}
RETURN(0);
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