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https://github.com/ibm-s390-linux/s390-tools.git
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2eceedeb11
Add a new monitor which uses libnvme to collect SMART data from NVMes. This monitor only implements the .collect_adapter_data operation since it carries no state across data collections. Nevertheless for future symmetry and possible future expansion also add an empty struct nvmemon_ctx. Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*
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* zpcimon - Report monitoring data to firmware
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*
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* Copyright IBM Corp. 2025
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libnvme.h>
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#include "lib/pci_list.h"
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#include "lib/pci_sclp.h"
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#include "lib/util_fmt.h"
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#include "nvmemon.h"
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#include "zpcimon.h"
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static void nvme_json_print(struct zpcimon_ctx *ctx, struct zpci_dev *zdev, const char *name,
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struct nvme_smart_log *log)
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{
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zpci_adapter_json_print_start(zdev);
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util_fmt_obj_start(FMT_DEFAULT, "nvmedev");
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util_fmt_pair(FMT_QUOTE, "dev", name);
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if (ctx->opts.smart_blob)
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zpcimon_json_base64_pair("smart-log-raw", (uint8_t *)log, sizeof(*log));
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util_fmt_obj_end();
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zpci_adapter_json_print_end();
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fflush(stdout);
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}
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static int sclp_issue_nvme_smart_report(struct zpci_dev *zdev, const uint8_t *smart, int smart_len)
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{
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char *pci_addr;
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int rc;
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if (zdev->pft != ZPCI_PFT_NVME)
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return -ENOTSUP;
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pci_addr = zpci_pci_addr(zdev);
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rc = zpci_sclp_issue_action(pci_addr, SCLP_ERRNOTIFY_AQ_NVME_SMART_DATA,
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(char *)smart, smart_len, SCLP_ERRNOTIFY_ID_NVMEMON);
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free(pci_addr);
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return rc;
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}
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static int nvmemon_collect_adapter_data(struct zpcimon_ctx *ctx, struct zpci_dev *zdev)
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{
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struct nvme_smart_log log = {};
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int nvme_fd, rc = -ENODEV;
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char *dev, *pci_addr;
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if (zdev->pft != ZPCI_PFT_NVME)
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return -ENODEV;
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pci_addr = zpci_pci_addr(zdev);
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dev = zpci_get_nvme_device_node(pci_addr);
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if (!dev)
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goto exit_free_addr;
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nvme_fd = openat(AT_FDCWD, dev, O_RDONLY);
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if (nvme_fd < 0) {
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warn("Failed to open %s", dev);
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rc = -errno;
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goto exit_free_dev;
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}
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rc = nvme_get_log_smart(nvme_fd, NVME_NSID_ALL, false, &log);
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if (rc) {
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warnx("Getting NVMe SMART log failed %d", rc);
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goto exit_close;
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}
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if (!ctx->opts.quiet)
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nvme_json_print(ctx, zdev, dev, &log);
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if (ctx->opts.report) {
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rc = sclp_issue_nvme_smart_report(zdev, (uint8_t *)&log, sizeof(log));
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if (rc < 0 && rc != -ENOTSUP)
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warnx("Error issuing SCLP for NVMe SMART log failed");
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}
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exit_close:
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close(nvme_fd);
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exit_free_dev:
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free(dev);
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exit_free_addr:
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free(pci_addr);
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return rc;
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}
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const struct zpcimon_ops nvmemon_ops = {
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.collect_adapter_data = nvmemon_collect_adapter_data,
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};
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