qga: Introduce disk smart
After assigning a NVMe/SCSI controller to guest by VFIO, we lose everything on the host side. A guest uses these devices exclusively, we usually don't care the actions on these devices. But there is a low probability that hitting physical hardware warning, we need a chance to get the basic smart log info. Introduce disk smart, and implement NVMe smart on linux. Thanks to Keith and Marc-André. CC: Keith Busch <kbusch@kernel.org> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Message-Id: <20220420022610.418052-3-pizhenwei@bytedance.com>
This commit is contained in:
zhenwei pi
Marc-André Lureau
parent
d48f61c8ea
commit
22668881f3
@ -26,6 +26,7 @@
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#include "qemu/base64.h"
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#include "qemu/cutils.h"
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#include "commands-common.h"
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#include "block/nvme.h"
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#ifdef HAVE_UTMPX
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#include <utmpx.h>
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@ -35,6 +36,7 @@
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#include <mntent.h>
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#include <linux/fs.h>
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#include <sys/statvfs.h>
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#include <linux/nvme_ioctl.h>
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#ifdef CONFIG_LIBUDEV
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#include <libudev.h>
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@ -1391,6 +1393,76 @@ static GuestDiskInfoList *get_disk_partitions(
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return ret;
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}
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static void get_nvme_smart(GuestDiskInfo *disk)
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{
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int fd;
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GuestNVMeSmart *smart;
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NvmeSmartLog log = {0};
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struct nvme_admin_cmd cmd = {
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.opcode = NVME_ADM_CMD_GET_LOG_PAGE,
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.nsid = NVME_NSID_BROADCAST,
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.addr = (uintptr_t)&log,
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.data_len = sizeof(log),
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.cdw10 = NVME_LOG_SMART_INFO | (1 << 15) /* RAE bit */
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| (((sizeof(log) >> 2) - 1) << 16)
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};
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fd = qemu_open_old(disk->name, O_RDONLY);
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if (fd == -1) {
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g_debug("Failed to open device: %s: %s", disk->name, g_strerror(errno));
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return;
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}
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if (ioctl(fd, NVME_IOCTL_ADMIN_CMD, &cmd)) {
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g_debug("Failed to get smart: %s: %s", disk->name, g_strerror(errno));
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close(fd);
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return;
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}
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disk->has_smart = true;
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disk->smart = g_new0(GuestDiskSmart, 1);
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disk->smart->type = GUEST_DISK_BUS_TYPE_NVME;
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smart = &disk->smart->u.nvme;
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smart->critical_warning = log.critical_warning;
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smart->temperature = lduw_le_p(&log.temperature); /* unaligned field */
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smart->available_spare = log.available_spare;
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smart->available_spare_threshold = log.available_spare_threshold;
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smart->percentage_used = log.percentage_used;
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smart->data_units_read_lo = le64_to_cpu(log.data_units_read[0]);
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smart->data_units_read_hi = le64_to_cpu(log.data_units_read[1]);
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smart->data_units_written_lo = le64_to_cpu(log.data_units_written[0]);
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smart->data_units_written_hi = le64_to_cpu(log.data_units_written[1]);
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smart->host_read_commands_lo = le64_to_cpu(log.host_read_commands[0]);
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smart->host_read_commands_hi = le64_to_cpu(log.host_read_commands[1]);
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smart->host_write_commands_lo = le64_to_cpu(log.host_write_commands[0]);
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smart->host_write_commands_hi = le64_to_cpu(log.host_write_commands[1]);
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smart->controller_busy_time_lo = le64_to_cpu(log.controller_busy_time[0]);
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smart->controller_busy_time_hi = le64_to_cpu(log.controller_busy_time[1]);
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smart->power_cycles_lo = le64_to_cpu(log.power_cycles[0]);
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smart->power_cycles_hi = le64_to_cpu(log.power_cycles[1]);
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smart->power_on_hours_lo = le64_to_cpu(log.power_on_hours[0]);
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smart->power_on_hours_hi = le64_to_cpu(log.power_on_hours[1]);
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smart->unsafe_shutdowns_lo = le64_to_cpu(log.unsafe_shutdowns[0]);
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smart->unsafe_shutdowns_hi = le64_to_cpu(log.unsafe_shutdowns[1]);
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smart->media_errors_lo = le64_to_cpu(log.media_errors[0]);
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smart->media_errors_hi = le64_to_cpu(log.media_errors[1]);
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smart->number_of_error_log_entries_lo =
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le64_to_cpu(log.number_of_error_log_entries[0]);
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smart->number_of_error_log_entries_hi =
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le64_to_cpu(log.number_of_error_log_entries[1]);
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close(fd);
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}
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static void get_disk_smart(GuestDiskInfo *disk)
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{
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if (disk->has_address
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&& (disk->address->bus_type == GUEST_DISK_BUS_TYPE_NVME)) {
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get_nvme_smart(disk);
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}
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}
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GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
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{
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GuestDiskInfoList *ret = NULL;
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@ -1464,6 +1536,7 @@ GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
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}
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get_disk_deps(disk_dir, disk);
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get_disk_smart(disk);
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ret = get_disk_partitions(ret, de->d_name, disk_dir, dev_name);
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}
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@ -888,6 +888,55 @@
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'*serial': 'str', '*dev': 'str',
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'*ccw-address': 'GuestCCWAddress'} }
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##
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# @GuestNVMeSmart:
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#
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# NVMe smart informations, based on NVMe specification,
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# section <SMART / Health Information (Log Identifier 02h)>
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#
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# Since: 7.1
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##
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{ 'struct': 'GuestNVMeSmart',
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'data': {'critical-warning': 'int',
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'temperature': 'int',
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'available-spare': 'int',
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'available-spare-threshold': 'int',
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'percentage-used': 'int',
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'data-units-read-lo': 'uint64',
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'data-units-read-hi': 'uint64',
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'data-units-written-lo': 'uint64',
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'data-units-written-hi': 'uint64',
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'host-read-commands-lo': 'uint64',
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'host-read-commands-hi': 'uint64',
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'host-write-commands-lo': 'uint64',
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'host-write-commands-hi': 'uint64',
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'controller-busy-time-lo': 'uint64',
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'controller-busy-time-hi': 'uint64',
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'power-cycles-lo': 'uint64',
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'power-cycles-hi': 'uint64',
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'power-on-hours-lo': 'uint64',
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'power-on-hours-hi': 'uint64',
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'unsafe-shutdowns-lo': 'uint64',
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'unsafe-shutdowns-hi': 'uint64',
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'media-errors-lo': 'uint64',
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'media-errors-hi': 'uint64',
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'number-of-error-log-entries-lo': 'uint64',
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'number-of-error-log-entries-hi': 'uint64' } }
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##
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# @GuestDiskSmart:
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#
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# Disk type related smart information.
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#
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# - @nvme: NVMe disk smart
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#
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# Since: 7.1
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##
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{ 'union': 'GuestDiskSmart',
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'base': { 'type': 'GuestDiskBusType' },
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'discriminator': 'type',
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'data': { 'nvme': 'GuestNVMeSmart' } }
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##
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# @GuestDiskInfo:
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#
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@ -899,12 +948,14 @@
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# @address: disk address information (only for non-virtual devices)
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# @alias: optional alias assigned to the disk, on Linux this is a name assigned
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# by device mapper
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# @smart: disk smart information (Since 7.1)
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#
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# Since 5.2
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##
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{ 'struct': 'GuestDiskInfo',
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'data': {'name': 'str', 'partition': 'bool', '*dependencies': ['str'],
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'*address': 'GuestDiskAddress', '*alias': 'str'} }
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'*address': 'GuestDiskAddress', '*alias': 'str',
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'*smart': 'GuestDiskSmart'} }
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##
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# @guest-get-disks:
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