/** Add a CL_MARK record to the changelog
* \param mdd
* \param markerflags - CLM_*
* \retval 0 ok
*/
int mdd_changelog_write_header(const struct lu_env *env,
struct mdd_device *mdd, int markerflags)
{
struct obd_device *obd = mdd2obd_dev(mdd);
struct llog_changelog_rec *rec;
struct lu_buf *buf;
struct llog_ctxt *ctxt;
int reclen;
int len = strlen(obd->obd_name);
int rc;
ENTRY;
if (mdd->mdd_cl.mc_mask & (1 << CL_MARK)) {
mdd->mdd_cl.mc_starttime = cfs_time_current_64();
RETURN(0);
}
reclen = llog_data_len(sizeof(*rec) + len);
buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
if (buf->lb_buf == NULL)
RETURN(-ENOMEM);
rec = buf->lb_buf;
rec->cr.cr_flags = CLF_VERSION;
rec->cr.cr_type = CL_MARK;
rec->cr.cr_namelen = len;
memcpy(changelog_rec_name(&rec->cr), obd->obd_name, rec->cr.cr_namelen);
/* Status and action flags */
rec->cr.cr_markerflags = mdd->mdd_cl.mc_flags | markerflags;
rec->cr_hdr.lrh_len = llog_data_len(changelog_rec_size(&rec->cr) +
rec->cr.cr_namelen);
rec->cr_hdr.lrh_type = CHANGELOG_REC;
rec->cr.cr_time = cl_time();
spin_lock(&mdd->mdd_cl.mc_lock);
rec->cr.cr_index = ++mdd->mdd_cl.mc_index;
spin_unlock(&mdd->mdd_cl.mc_lock);
ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
LASSERT(ctxt);
rc = llog_cat_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL);
if (rc > 0)
rc = 0;
llog_ctxt_put(ctxt);
/* assume on or off event; reset repeat-access time */
mdd->mdd_cl.mc_starttime = cfs_time_current_64();
RETURN(rc);
}
static int mgs_iocontrol_pool(struct obd_device *obd,
struct obd_ioctl_data *data)
{
int rc;
struct lustre_cfg *lcfg = NULL;
struct llog_rec_hdr rec;
char *fsname = NULL;
char *poolname = NULL;
ENTRY;
OBD_ALLOC(fsname, MTI_NAME_MAXLEN);
if (fsname == NULL)
RETURN(-ENOMEM);
OBD_ALLOC(poolname, LOV_MAXPOOLNAME + 1);
if (poolname == NULL) {
rc = -ENOMEM;
GOTO(out_pool, rc);
}
rec.lrh_len = llog_data_len(data->ioc_plen1);
if (data->ioc_type == LUSTRE_CFG_TYPE) {
rec.lrh_type = OBD_CFG_REC;
} else {
CERROR("unknown cfg record type:%d \n", data->ioc_type);
rc = -EINVAL;
GOTO(out_pool, rc);
}
if (data->ioc_plen1 > CFS_PAGE_SIZE) {
rc = -E2BIG;
GOTO(out_pool, rc);
}
OBD_ALLOC(lcfg, data->ioc_plen1);
if (lcfg == NULL)
GOTO(out_pool, rc = -ENOMEM);
if (cfs_copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
GOTO(out_pool, rc = -EFAULT);
if (lcfg->lcfg_bufcount < 2) {
GOTO(out_pool, rc = -EFAULT);
}
/* first arg is always <fsname>.<poolname> */
mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), fsname,
poolname);
switch (lcfg->lcfg_command) {
case LCFG_POOL_NEW: {
if (lcfg->lcfg_bufcount != 2)
RETURN(-EINVAL);
rc = mgs_pool_cmd(obd, LCFG_POOL_NEW, fsname,
poolname, NULL);
break;
}
case LCFG_POOL_ADD: {
if (lcfg->lcfg_bufcount != 3)
RETURN(-EINVAL);
rc = mgs_pool_cmd(obd, LCFG_POOL_ADD, fsname, poolname,
lustre_cfg_string(lcfg, 2));
break;
}
case LCFG_POOL_REM: {
if (lcfg->lcfg_bufcount != 3)
RETURN(-EINVAL);
rc = mgs_pool_cmd(obd, LCFG_POOL_REM, fsname, poolname,
lustre_cfg_string(lcfg, 2));
break;
}
case LCFG_POOL_DEL: {
if (lcfg->lcfg_bufcount != 2)
RETURN(-EINVAL);
rc = mgs_pool_cmd(obd, LCFG_POOL_DEL, fsname,
poolname, NULL);
break;
}
default: {
rc = -EINVAL;
GOTO(out_pool, rc);
}
}
if (rc) {
CERROR("OBD_IOC_POOL err %d, cmd %X for pool %s.%s\n",
rc, lcfg->lcfg_command, fsname, poolname);
GOTO(out_pool, rc);
}
out_pool:
if (lcfg != NULL)
OBD_FREE(lcfg, data->ioc_plen1);
if (fsname != NULL)
OBD_FREE(fsname, MTI_NAME_MAXLEN);
if (poolname != NULL)
OBD_FREE(poolname, LOV_MAXPOOLNAME + 1);
RETURN(rc);
}
/* from mdt_iocontrol */
int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
void *karg, void *uarg)
{
struct obd_device *obd = exp->exp_obd;
struct obd_ioctl_data *data = karg;
struct lvfs_run_ctxt saved;
int rc = 0;
ENTRY;
CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
switch (cmd) {
case OBD_IOC_PARAM: {
struct lustre_cfg *lcfg;
struct llog_rec_hdr rec;
char fsname[MTI_NAME_MAXLEN];
rec.lrh_len = llog_data_len(data->ioc_plen1);
if (data->ioc_type == LUSTRE_CFG_TYPE) {
rec.lrh_type = OBD_CFG_REC;
} else {
CERROR("unknown cfg record type:%d \n", data->ioc_type);
RETURN(-EINVAL);
}
OBD_ALLOC(lcfg, data->ioc_plen1);
if (lcfg == NULL)
RETURN(-ENOMEM);
if (cfs_copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
GOTO(out_free, rc = -EFAULT);
if (lcfg->lcfg_bufcount < 1)
GOTO(out_free, rc = -EINVAL);
rc = mgs_setparam(obd, lcfg, fsname);
if (rc) {
CERROR("setparam err %d\n", rc);
GOTO(out_free, rc);
}
out_free:
OBD_FREE(lcfg, data->ioc_plen1);
RETURN(rc);
}
case OBD_IOC_POOL: {
RETURN(mgs_iocontrol_pool(obd, data));
}
case OBD_IOC_DUMP_LOG: {
struct llog_ctxt *ctxt;
ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
rc = class_config_dump_llog(ctxt, data->ioc_inlbuf1, NULL);
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
llog_ctxt_put(ctxt);
RETURN(rc);
}
case OBD_IOC_LLOG_CHECK:
case OBD_IOC_LLOG_INFO:
case OBD_IOC_LLOG_PRINT: {
struct llog_ctxt *ctxt;
ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
rc = llog_ioctl(ctxt, cmd, data);
pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
llog_ctxt_put(ctxt);
RETURN(rc);
}
default:
CDEBUG(D_INFO, "unknown command %x\n", cmd);
RETURN(-EINVAL);
}
RETURN(0);
}
