lproc_osc.c

来自「lustre 1.6.5 source code」· C语言 代码 · 共 556 行 · 第 1/2 页

        struct obd_device *obd = data;

        if (obd == NULL)
                return 0;

        return snprintf(page, count, "%d\n",
                        obd->u.cli.cl_checksum ? 1 : 0);
}

static int osc_wr_checksum(struct file *file, const char *buffer,
                           unsigned long count, void *data)
{
        struct obd_device *obd = data;
        int val, rc;

        if (obd == NULL)
                return 0;

        rc = lprocfs_write_helper(buffer, count, &val);
        if (rc)
                return rc;

        obd->u.cli.cl_checksum = (val ? 1 : 0);

        return count;
}

static int osc_rd_checksum_type(char *page, char **start, off_t off, int count,
                                int *eof, void *data)
{
        struct obd_device *obd = data;
        int i, len =0;
        DECLARE_CKSUM_NAME;

        if (obd == NULL)
                return 0;

        for (i = 0; i < ARRAY_SIZE(cksum_name) && len < count; i++) {
                if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
                        continue;
                if (obd->u.cli.cl_cksum_type == (1 << i))
                        len += snprintf(page + len, count - len, "[%s] ",
                                        cksum_name[i]);
                else
                        len += snprintf(page + len, count - len, "%s ",
                                        cksum_name[i]);
        }
        if (len < count)
                len += sprintf(page + len, "\n");
        return len;
}

static int osc_wd_checksum_type(struct file *file, const char *buffer,
                                unsigned long count, void *data)
{
        struct obd_device *obd = data;
        int i;
        DECLARE_CKSUM_NAME;
        char kernbuf[10];

        if (obd == NULL)
                return 0;

        if (count > sizeof(kernbuf) - 1)
                return -EINVAL;
        if (copy_from_user(kernbuf, buffer, count))
                return -EFAULT;
        if (count > 0 && kernbuf[count - 1] == '\n')
                kernbuf[count - 1] = '\0';
        else
                kernbuf[count] = '\0';

        for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
                if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
                        continue;
                if (!strcmp(kernbuf, cksum_name[i])) {
                       obd->u.cli.cl_cksum_type = 1 << i;
                       return count;
                }
        }
        return -EINVAL;
}

static int osc_rd_resend_count(char *page, char **start, off_t off, int count,
                               int *eof, void *data)
{
        struct obd_device *obd = data;

        return snprintf(page, count, "%u\n", atomic_read(&obd->u.cli.cl_resends)); 
}

static int osc_wr_resend_count(struct file *file, const char *buffer,
                               unsigned long count, void *data)
{
        struct obd_device *obd = data;
        int val, rc;

        rc = lprocfs_write_helper(buffer, count, &val);
        if (rc)
                return rc;

        if (val < 0)
               return -EINVAL;

        atomic_set(&obd->u.cli.cl_resends, val);

        return count;
}

static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
        { "uuid",            lprocfs_rd_uuid,        0, 0 },
        { "ping",            0, lprocfs_wr_ping,        0 },
        { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
        { "blocksize",       lprocfs_rd_blksize,     0, 0 },
        { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
        { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
        { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
        { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
        { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
        //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
        { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
        { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
        { "active",          osc_rd_active, 
                             osc_wr_active, 0 },
        { "max_pages_per_rpc", osc_rd_max_pages_per_rpc,
                               osc_wr_max_pages_per_rpc, 0 },
        { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
                                osc_wr_max_rpcs_in_flight, 0 },
        { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
        { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
        { "cur_grant_bytes", osc_rd_cur_grant_bytes, 0, 0 },
        { "create_count",    osc_rd_create_count, osc_wr_create_count, 0 },
        { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
        { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
        { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
        { "checksum_type",   osc_rd_checksum_type, osc_wd_checksum_type, 0 },
        { "resend_count",  osc_rd_resend_count, osc_wr_resend_count, 0},
        { "timeouts",        lprocfs_rd_timeouts,      0, 0 },
        { 0 }
};

static struct lprocfs_vars lprocfs_osc_module_vars[] = {
        { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
        { 0 }
};

#define pct(a,b) (b ? a * 100 / b : 0)

static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
{
        struct timeval now;
        struct obd_device *dev = seq->private;
        struct client_obd *cli = &dev->u.cli;
        unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
        int i;

        do_gettimeofday(&now);

        client_obd_list_lock(&cli->cl_loi_list_lock);

        seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
                   now.tv_sec, now.tv_usec);
        seq_printf(seq, "read RPCs in flight:  %d\n",
                   cli->cl_r_in_flight);
        seq_printf(seq, "write RPCs in flight: %d\n",
                   cli->cl_w_in_flight);
        seq_printf(seq, "pending write pages:  %d\n",
                   cli->cl_pending_w_pages);
        seq_printf(seq, "pending read pages:   %d\n",
                   cli->cl_pending_r_pages);

        seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
        seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
        seq_printf(seq, "       rpcs   %% cum %%\n");

        read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
        write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);

        read_cum = 0;
        write_cum = 0;
        for (i = 0; i < OBD_HIST_MAX; i++) {
                unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
                unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
                read_cum += r;
                write_cum += w;
                seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
                                 1 << i, r, pct(r, read_tot),
                                 pct(read_cum, read_tot), w,
                                 pct(w, write_tot),
                                 pct(write_cum, write_tot));
                if (read_cum == read_tot && write_cum == write_tot)
                        break;
        }

        seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
        seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
        seq_printf(seq, "       rpcs   %% cum %%\n");

        read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
        write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);

        read_cum = 0;
        write_cum = 0;
        for (i = 0; i < OBD_HIST_MAX; i++) {
                unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
                unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
                read_cum += r;
                write_cum += w;
                seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
                                 i, r, pct(r, read_tot),
                                 pct(read_cum, read_tot), w,
                                 pct(w, write_tot),
                                 pct(write_cum, write_tot));
                if (read_cum == read_tot && write_cum == write_tot)
                        break;
        }

        seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
        seq_printf(seq, "offset                rpcs   %% cum %% |");
        seq_printf(seq, "       rpcs   %% cum %%\n");

        read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
        write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);

        read_cum = 0;
        write_cum = 0;
        for (i = 0; i < OBD_HIST_MAX; i++) {
                unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
                unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
                read_cum += r;
                write_cum += w;
                seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
                           (i == 0) ? 0 : 1 << (i - 1),
                           r, pct(r, read_tot), pct(read_cum, read_tot), 
                           w, pct(w, write_tot), pct(write_cum, write_tot));
                if (read_cum == read_tot && write_cum == write_tot)
                        break;
        }

        client_obd_list_unlock(&cli->cl_loi_list_lock);

        return 0;
}
#undef pct

static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
                                       size_t len, loff_t *off)
{
        struct seq_file *seq = file->private_data;
        struct obd_device *dev = seq->private;
        struct client_obd *cli = &dev->u.cli;

        lprocfs_oh_clear(&cli->cl_read_rpc_hist);
        lprocfs_oh_clear(&cli->cl_write_rpc_hist);
        lprocfs_oh_clear(&cli->cl_read_page_hist);
        lprocfs_oh_clear(&cli->cl_write_page_hist);
        lprocfs_oh_clear(&cli->cl_read_offset_hist);
        lprocfs_oh_clear(&cli->cl_write_offset_hist);

        return len;
}

LPROC_SEQ_FOPS(osc_rpc_stats);

int lproc_osc_attach_seqstat(struct obd_device *dev)
{
        return lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
                                      &osc_rpc_stats_fops, dev);
}

void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
{
        lvars->module_vars = lprocfs_osc_module_vars;
        lvars->obd_vars    = lprocfs_osc_obd_vars;
}
#endif /* LPROCFS */