I want to enable spindown on my rarely used drive (2.5 inch Seagate BarraCuda, 5TB, model ST5000LM000). The spindown parameter works only if I modify the APM. After reconnecting power and booting, APM is at 128. Lowering APM to 127 (using hdparm -B 127) correctly applies and allows spindown.
I able to set the spindown parameter using TuneD, but not apm. This output is produced when setting a profile with APM value:
tuned.plugins.plugin_disk: Driver for device 'sda' does not support apm command
Actually, when I disable this check, APM is correctly applied.
Indeed, running hdparm -C reports the unknown state when querying it after a fresh boot. However states like standby or active are reported when using the drive.
# hdparm -C /dev/sda
/dev/sda:
drive state is: unknown
# hdparm -B /dev/sda
/dev/sda:
APM_level = 128
# hdparm -B 127 /dev/sda
/dev/sda:
setting Advanced Power Management level to 0x7f (127)
APM_level = 127
# hdparm -B /dev/sda
/dev/sda:
APM_level = 127
# hdparm -C /dev/sda
/dev/sda:
drive state is: unknown
# hdparm -Y /dev/sda
/dev/sda:
issuing sleep command
# hdparm -C /dev/sda
/dev/sda:
drive state is: standby
# touch /mnt/hdd/a
# hdparm -C /dev/sda
/dev/sda:
drive state is: active/idle
Disk details:
# hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: ST5000LM000-2AN170
Serial Number: WCJ52Z2A
Firmware Revision: 0001
Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
Standards:
Used: unknown (minor revision code 0x006d)
Supported: 10 9 8 7 6 5
Likely used: 10
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 9767541168
Logical Sector size: 512 bytes
Physical Sector size: 4096 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 4769307 MBytes
device size with M = 1000*1000: 5000981 MBytes (5000 GB)
cache/buffer size = unknown
Form Factor: 2.5 inch
Nominal Media Rotation Rate: 5526
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 1 Current = ?
Advanced power management level: 128
Recommended acoustic management value: 208, current value: 208
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* DOWNLOAD_MICROCODE
* Advanced Power Management feature set
Power-Up In Standby feature set
* SET_FEATURES required to spinup after power up
SET_MAX security extension
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* WRITE_{DMA|MULTIPLE}_FUA_EXT
* 64-bit World wide name
* WRITE_UNCORRECTABLE_EXT command
* {READ,WRITE}_DMA_EXT_GPL commands
* Segmented DOWNLOAD_MICROCODE
* unknown 119[6]
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* Gen3 signaling speed (6.0Gb/s)
* Native Command Queueing (NCQ)
* Phy event counters
* READ_LOG_DMA_EXT equivalent to READ_LOG_EXT
* DMA Setup Auto-Activate optimization
Device-initiated interface power management
* Software settings preservation
unknown 78[7]
* SMART Command Transport (SCT) feature set
* SCT Write Same (AC2)
* SCT Data Tables (AC5)
unknown 206[7]
unknown 206[12] (vendor specific)
unknown 206[13] (vendor specific)
* Device encrypts all user data
* IEEE 1667 authentication of transient storage devices
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
804min for SECURITY ERASE UNIT. 2min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 5000c500d5eedc18
NAA : 5
IEEE OUI : 000c50
Unique ID : 0d5eedc18
Checksum: correct
I'm using TuneD 2.20 and hdparm 9.62.
Anyway, from my naive newcomer point of view: Why is hdparm -C used to detect APM support? Why not to query APM using hdparm -B? If APM is not supported, it should produce output like this:
# hdparm -B /dev/sdb
/dev/sdb:
APM_level = not supported
as per hdparm source code:
if (get_apmmode) {
get_identify_data(fd);
if (id) {
printf(" APM_level = ");
if ((id[83] & 0xc008) == 0x4008) {
if (id[86] & 0x0008)
printf("%u\n", id[91] & 0xff);
else
printf("off\n");
} else
printf("not supported\n");
}
}
Hello,
I want to enable spindown on my rarely used drive (2.5 inch Seagate BarraCuda, 5TB, model ST5000LM000). The
spindownparameter works only if I modify the APM. After reconnecting power and booting, APM is at 128. Lowering APM to 127 (usinghdparm -B 127) correctly applies and allows spindown.I able to set the
spindownparameter using TuneD, but notapm. This output is produced when setting a profile with APM value:Actually, when I disable this check, APM is correctly applied.
Indeed, running
hdparm -Creports theunknownstate when querying it after a fresh boot. However states likestandbyoractiveare reported when using the drive.Disk details:
I'm using TuneD 2.20 and hdparm 9.62.
Anyway, from my naive newcomer point of view: Why is
hdparm -Cused to detect APM support? Why not to query APM usinghdparm -B? If APM is not supported, it should produce output like this:as per hdparm source code: