qga/commands-posix.c | 73 ++++++++++++++++++++++++++++++++++++++++++++ qga/qapi-schema.json | 53 +++++++++++++++++++++++++++++++- 2 files changed, 125 insertions(+), 1 deletion(-)
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>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
---
qga/commands-posix.c | 73 ++++++++++++++++++++++++++++++++++++++++++++
qga/qapi-schema.json | 53 +++++++++++++++++++++++++++++++-
2 files changed, 125 insertions(+), 1 deletion(-)
diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 4ec83bbfbc..383bbebe42 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -27,6 +27,7 @@
#include "qemu/base64.h"
#include "qemu/cutils.h"
#include "commands-common.h"
+#include "block/nvme.h"
#ifdef HAVE_UTMPX
#include <utmpx.h>
@@ -49,6 +50,7 @@ extern char **environ;
#include <sys/socket.h>
#include <net/if.h>
#include <sys/statvfs.h>
+#include <linux/nvme_ioctl.h>
#ifdef CONFIG_LIBUDEV
#include <libudev.h>
@@ -1390,6 +1392,76 @@ static GuestDiskInfoList *get_disk_partitions(
return ret;
}
+static void get_nvme_smart(GuestDiskInfo *disk)
+{
+ int fd;
+ GuestNVMeSmart *smart;
+ NvmeSmartLog log = {0};
+ struct nvme_admin_cmd cmd = {
+ .opcode = NVME_ADM_CMD_GET_LOG_PAGE,
+ .nsid = NVME_NSID_BROADCAST,
+ .addr = (uint64_t)&log,
+ .data_len = sizeof(log),
+ .cdw10 = NVME_LOG_SMART_INFO | (1 << 15) /* RAE bit */
+ | (((sizeof(log) >> 2) - 1) << 16)
+ };
+
+ fd = qemu_open_old(disk->name, O_RDONLY);
+ if (fd == -1) {
+ g_debug("Failed to open device: %s: %s", disk->name, g_strerror(errno));
+ return;
+ }
+
+ if (ioctl(fd, NVME_IOCTL_ADMIN_CMD, &cmd)) {
+ g_debug("Failed to get smart: %s: %s", disk->name, g_strerror(errno));
+ close(fd);
+ return;
+ }
+
+ disk->has_smart = true;
+ disk->smart = g_new0(GuestDiskSmart, 1);
+ disk->smart->type = GUEST_DISK_BUS_TYPE_NVME;
+
+ smart = &disk->smart->u.nvme;
+ smart->critical_warning = log.critical_warning;
+ smart->temperature = lduw_le_p(&log.temperature); /* unaligned field */
+ smart->available_spare = log.available_spare;
+ smart->available_spare_threshold = log.available_spare_threshold;
+ smart->percentage_used = log.percentage_used;
+ smart->data_units_read_lo = le64_to_cpu(log.data_units_read[0]);
+ smart->data_units_read_hi = le64_to_cpu(log.data_units_read[1]);
+ smart->data_units_written_lo = le64_to_cpu(log.data_units_written[0]);
+ smart->data_units_written_hi = le64_to_cpu(log.data_units_written[1]);
+ smart->host_read_commands_lo = le64_to_cpu(log.host_read_commands[0]);
+ smart->host_read_commands_hi = le64_to_cpu(log.host_read_commands[1]);
+ smart->host_write_commands_lo = le64_to_cpu(log.host_write_commands[0]);
+ smart->host_write_commands_hi = le64_to_cpu(log.host_write_commands[1]);
+ smart->controller_busy_time_lo = le64_to_cpu(log.controller_busy_time[0]);
+ smart->controller_busy_time_hi = le64_to_cpu(log.controller_busy_time[1]);
+ smart->power_cycles_lo = le64_to_cpu(log.power_cycles[0]);
+ smart->power_cycles_hi = le64_to_cpu(log.power_cycles[1]);
+ smart->power_on_hours_lo = le64_to_cpu(log.power_on_hours[0]);
+ smart->power_on_hours_hi = le64_to_cpu(log.power_on_hours[1]);
+ smart->unsafe_shutdowns_lo = le64_to_cpu(log.unsafe_shutdowns[0]);
+ smart->unsafe_shutdowns_hi = le64_to_cpu(log.unsafe_shutdowns[1]);
+ smart->media_errors_lo = le64_to_cpu(log.media_errors[0]);
+ smart->media_errors_hi = le64_to_cpu(log.media_errors[1]);
+ smart->number_of_error_log_entries_lo =
+ le64_to_cpu(log.number_of_error_log_entries[0]);
+ smart->number_of_error_log_entries_hi =
+ le64_to_cpu(log.number_of_error_log_entries[1]);
+
+ close(fd);
+}
+
+static void get_disk_smart(GuestDiskInfo *disk)
+{
+ if (disk->has_address
+ && (disk->address->bus_type == GUEST_DISK_BUS_TYPE_NVME)) {
+ get_nvme_smart(disk);
+ }
+}
+
GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
{
GuestDiskInfoList *ret = NULL;
@@ -1463,6 +1535,7 @@ GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
}
get_disk_deps(disk_dir, disk);
+ get_disk_smart(disk);
ret = get_disk_partitions(ret, de->d_name, disk_dir, dev_name);
}
diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json
index 8f73770210..bbfb817347 100644
--- a/qga/qapi-schema.json
+++ b/qga/qapi-schema.json
@@ -888,6 +888,55 @@
'*serial': 'str', '*dev': 'str',
'*ccw-address': 'GuestCCWAddress'} }
+##
+# @GuestNVMeSmart:
+#
+# NVMe smart informations, based on NVMe specification,
+# section <SMART / Health Information (Log Identifier 02h)>
+#
+# Since: 7.0
+##
+{ 'struct': 'GuestNVMeSmart',
+ 'data': {'critical-warning': 'int',
+ 'temperature': 'int',
+ 'available-spare': 'int',
+ 'available-spare-threshold': 'int',
+ 'percentage-used': 'int',
+ 'data-units-read-lo': 'uint64',
+ 'data-units-read-hi': 'uint64',
+ 'data-units-written-lo': 'uint64',
+ 'data-units-written-hi': 'uint64',
+ 'host-read-commands-lo': 'uint64',
+ 'host-read-commands-hi': 'uint64',
+ 'host-write-commands-lo': 'uint64',
+ 'host-write-commands-hi': 'uint64',
+ 'controller-busy-time-lo': 'uint64',
+ 'controller-busy-time-hi': 'uint64',
+ 'power-cycles-lo': 'uint64',
+ 'power-cycles-hi': 'uint64',
+ 'power-on-hours-lo': 'uint64',
+ 'power-on-hours-hi': 'uint64',
+ 'unsafe-shutdowns-lo': 'uint64',
+ 'unsafe-shutdowns-hi': 'uint64',
+ 'media-errors-lo': 'uint64',
+ 'media-errors-hi': 'uint64',
+ 'number-of-error-log-entries-lo': 'uint64',
+ 'number-of-error-log-entries-hi': 'uint64' } }
+
+##
+# @GuestDiskSmart:
+#
+# Disk type related smart information.
+#
+# - @nvme: NVMe disk smart
+#
+# Since: 7.0
+##
+{ 'union': 'GuestDiskSmart',
+ 'base': { 'type': 'GuestDiskBusType' },
+ 'discriminator': 'type',
+ 'data': { 'nvme': 'GuestNVMeSmart' } }
+
##
# @GuestDiskInfo:
#
@@ -899,12 +948,14 @@
# @address: disk address information (only for non-virtual devices)
# @alias: optional alias assigned to the disk, on Linux this is a name assigned
# by device mapper
+# @smart: disk smart information (Since 7.0)
#
# Since 5.2
##
{ 'struct': 'GuestDiskInfo',
'data': {'name': 'str', 'partition': 'bool', '*dependencies': ['str'],
- '*address': 'GuestDiskAddress', '*alias': 'str'} }
+ '*address': 'GuestDiskAddress', '*alias': 'str',
+ '*smart': 'GuestDiskSmart'} }
##
# @guest-get-disks:
--
2.20.1
On Mon, Mar 7, 2022 at 12:46 PM zhenwei pi <pizhenwei@bytedance.com> wrote: > 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> > Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> > Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> > --- > qga/commands-posix.c | 73 ++++++++++++++++++++++++++++++++++++++++++++ > qga/qapi-schema.json | 53 +++++++++++++++++++++++++++++++- > 2 files changed, 125 insertions(+), 1 deletion(-) > > diff --git a/qga/commands-posix.c b/qga/commands-posix.c > index 4ec83bbfbc..383bbebe42 100644 > --- a/qga/commands-posix.c > +++ b/qga/commands-posix.c > @@ -27,6 +27,7 @@ > #include "qemu/base64.h" > #include "qemu/cutils.h" > #include "commands-common.h" > +#include "block/nvme.h" > > #ifdef HAVE_UTMPX > #include <utmpx.h> > @@ -49,6 +50,7 @@ extern char **environ; > #include <sys/socket.h> > #include <net/if.h> > #include <sys/statvfs.h> > +#include <linux/nvme_ioctl.h> > > #ifdef CONFIG_LIBUDEV > #include <libudev.h> > @@ -1390,6 +1392,76 @@ static GuestDiskInfoList *get_disk_partitions( > return ret; > } > > +static void get_nvme_smart(GuestDiskInfo *disk) > +{ > + int fd; > + GuestNVMeSmart *smart; > + NvmeSmartLog log = {0}; > + struct nvme_admin_cmd cmd = { > + .opcode = NVME_ADM_CMD_GET_LOG_PAGE, > + .nsid = NVME_NSID_BROADCAST, > + .addr = (uint64_t)&log, > + .data_len = sizeof(log), > + .cdw10 = NVME_LOG_SMART_INFO | (1 << 15) /* RAE bit */ > + | (((sizeof(log) >> 2) - 1) << 16) > + }; > + > + fd = qemu_open_old(disk->name, O_RDONLY); > + if (fd == -1) { > + g_debug("Failed to open device: %s: %s", disk->name, > g_strerror(errno)); > + return; > + } > + > + if (ioctl(fd, NVME_IOCTL_ADMIN_CMD, &cmd)) { > + g_debug("Failed to get smart: %s: %s", disk->name, > g_strerror(errno)); > + close(fd); > + return; > + } > + > + disk->has_smart = true; > + disk->smart = g_new0(GuestDiskSmart, 1); > + disk->smart->type = GUEST_DISK_BUS_TYPE_NVME; > + > + smart = &disk->smart->u.nvme; > + smart->critical_warning = log.critical_warning; > + smart->temperature = lduw_le_p(&log.temperature); /* unaligned field > */ > + smart->available_spare = log.available_spare; > + smart->available_spare_threshold = log.available_spare_threshold; > + smart->percentage_used = log.percentage_used; > + smart->data_units_read_lo = le64_to_cpu(log.data_units_read[0]); > + smart->data_units_read_hi = le64_to_cpu(log.data_units_read[1]); > + smart->data_units_written_lo = le64_to_cpu(log.data_units_written[0]); > + smart->data_units_written_hi = le64_to_cpu(log.data_units_written[1]); > + smart->host_read_commands_lo = le64_to_cpu(log.host_read_commands[0]); > + smart->host_read_commands_hi = le64_to_cpu(log.host_read_commands[1]); > + smart->host_write_commands_lo = > le64_to_cpu(log.host_write_commands[0]); > + smart->host_write_commands_hi = > le64_to_cpu(log.host_write_commands[1]); > + smart->controller_busy_time_lo = > le64_to_cpu(log.controller_busy_time[0]); > + smart->controller_busy_time_hi = > le64_to_cpu(log.controller_busy_time[1]); > + smart->power_cycles_lo = le64_to_cpu(log.power_cycles[0]); > + smart->power_cycles_hi = le64_to_cpu(log.power_cycles[1]); > + smart->power_on_hours_lo = le64_to_cpu(log.power_on_hours[0]); > + smart->power_on_hours_hi = le64_to_cpu(log.power_on_hours[1]); > + smart->unsafe_shutdowns_lo = le64_to_cpu(log.unsafe_shutdowns[0]); > + smart->unsafe_shutdowns_hi = le64_to_cpu(log.unsafe_shutdowns[1]); > + smart->media_errors_lo = le64_to_cpu(log.media_errors[0]); > + smart->media_errors_hi = le64_to_cpu(log.media_errors[1]); > + smart->number_of_error_log_entries_lo = > + le64_to_cpu(log.number_of_error_log_entries[0]); > + smart->number_of_error_log_entries_hi = > + le64_to_cpu(log.number_of_error_log_entries[1]); > + > + close(fd); > +} > + > +static void get_disk_smart(GuestDiskInfo *disk) > +{ > + if (disk->has_address > + && (disk->address->bus_type == GUEST_DISK_BUS_TYPE_NVME)) { > + get_nvme_smart(disk); > + } > +} > + > GuestDiskInfoList *qmp_guest_get_disks(Error **errp) > { > GuestDiskInfoList *ret = NULL; > @@ -1463,6 +1535,7 @@ GuestDiskInfoList *qmp_guest_get_disks(Error **errp) > } > > get_disk_deps(disk_dir, disk); > + get_disk_smart(disk); > ret = get_disk_partitions(ret, de->d_name, disk_dir, dev_name); > } > > diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json > index 8f73770210..bbfb817347 100644 > --- a/qga/qapi-schema.json > +++ b/qga/qapi-schema.json > @@ -888,6 +888,55 @@ > '*serial': 'str', '*dev': 'str', > '*ccw-address': 'GuestCCWAddress'} } > > +## > +# @GuestNVMeSmart: > +# > +# NVMe smart informations, based on NVMe specification, > +# section <SMART / Health Information (Log Identifier 02h)> > +# > +# Since: 7.0 > +## > +{ 'struct': 'GuestNVMeSmart', > + 'data': {'critical-warning': 'int', > + 'temperature': 'int', > + 'available-spare': 'int', > + 'available-spare-threshold': 'int', > + 'percentage-used': 'int', > + 'data-units-read-lo': 'uint64', > + 'data-units-read-hi': 'uint64', > + 'data-units-written-lo': 'uint64', > + 'data-units-written-hi': 'uint64', > + 'host-read-commands-lo': 'uint64', > + 'host-read-commands-hi': 'uint64', > + 'host-write-commands-lo': 'uint64', > + 'host-write-commands-hi': 'uint64', > + 'controller-busy-time-lo': 'uint64', > + 'controller-busy-time-hi': 'uint64', > + 'power-cycles-lo': 'uint64', > + 'power-cycles-hi': 'uint64', > + 'power-on-hours-lo': 'uint64', > + 'power-on-hours-hi': 'uint64', > + 'unsafe-shutdowns-lo': 'uint64', > + 'unsafe-shutdowns-hi': 'uint64', > + 'media-errors-lo': 'uint64', > + 'media-errors-hi': 'uint64', > + 'number-of-error-log-entries-lo': 'uint64', > + 'number-of-error-log-entries-hi': 'uint64' } } > + > +## > +# @GuestDiskSmart: > +# > +# Disk type related smart information. > +# > +# - @nvme: NVMe disk smart > +# > +# Since: 7.0 > +## > +{ 'union': 'GuestDiskSmart', > + 'base': { 'type': 'GuestDiskBusType' }, > + 'discriminator': 'type', > + 'data': { 'nvme': 'GuestNVMeSmart' } } > + > ## > # @GuestDiskInfo: > # > @@ -899,12 +948,14 @@ > # @address: disk address information (only for non-virtual devices) > # @alias: optional alias assigned to the disk, on Linux this is a name > assigned > # by device mapper > +# @smart: disk smart information (Since 7.0) > # > # Since 5.2 > ## > { 'struct': 'GuestDiskInfo', > 'data': {'name': 'str', 'partition': 'bool', '*dependencies': ['str'], > - '*address': 'GuestDiskAddress', '*alias': 'str'} } > + '*address': 'GuestDiskAddress', '*alias': 'str', > + '*smart': 'GuestDiskSmart'} } > > ## > # @guest-get-disks: > -- > 2.20.1 > > -- Marc-André Lureau
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