sync src/ata_id/ata_id.c #201
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Kasijjuf
reviewed
Sep 21, 2021
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This change appears unrelated to the systemd commit referenced to in the commit message. Please clarify.
|
You are right, the proper one is 402fecff19d42bb06caed1a3a32262c18087b7f1 |
|
Fixed, I haven't seen such a small patch with such a huge commit message... |
Original revisions of the SAT (SCSI-ATA Translation) specification
required that all sense data be reported in Descriptor Format (72h).
Later revisions specifcally allow and account for sense data being
reported in Fixed Format (70h).
The current code checks for a Descriptor Format sense structure (0x72),
then looks specifically at the first byte of the first descriptor for the
ATA specific code 0x9, cross referencing it with the first byte which is
just a length field 0x0c (as a sanity check).
In the Fixed Format case(0x70), we can fall back to using the top-level
SCSI Sense data for the Additional Sense code (0x0) and then the
Additional Sense Code Qualifier (0x1d),
That identifies that the sense data is of the format associated with:
`ATA PASS THROUGH INFORMATION AVAILABLE`.
This fallback mechanism retains support for SATLs compliant with ANSI
INCITS 431-2007, and enables support for Fixed Format Sense data
enabled by SATLs with later revisions.
Glad to do so. This patch allows ata_id to export attributes correctly. I believe that any drive can potentially return information in this format on
any SATL using the libata-scsi (the Linux builtin SATL), but in this particular case, it appears it is the SATL itself. Attaching the disk to the AHCI con
troller changes the behavior impacted here. (Not entirely surprisingly, SATLs are are pretty inconsistent).
Test:
This case specifically is an LSI SATL. I'll illustrate that without the patch, ata_id does not return
any output for a valid SATA drive but after the patch does.
1. Verify the device is ATA, by looking at the vpd page specific to ATA drives
```
root@machine:~# sg_vpd -p ai /dev/sdn
ATA information VPD page:
SAT Vendor identification: LSI
SAT Product identification: LSI SATL
SAT Product revision level: 0008
Device signature indicates SATA transport
ATA command IDENTIFY DEVICE response summary:
model: HGST HUH728080ALE604
serial number: ZZZZH3VX
firmware revision: A4GNW7J0
```
2. Look at what udev thinks of the disk, it says ID_BUS=scsi
ATA information says ID_MODEL should be HGST_HUH728080ALE604
udev says it is HGST_HUH728080AL (Missing E604, 4 bytes), and no ATA attributes are
populated.
```
root@machine:~# udevadm info -q all /dev/sdn
P: /devices/pci0000:00/0000:00:03.0/0000:05:00.0/host2/port-2:0/expander-2:0/port-2:0:11/end_device-2:0:11/target2:0:11/2:0:11:0/block/sdn
N: sdn
S: disk/by-id/scsi-35000cca23be1dc3c
S: disk/by-id/wwn-0x5000cca23be1dc3c
S: disk/by-path/pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0
E: DEVLINKS=/dev/disk/by-id/wwn-0x5000cca23be1dc3c /dev/disk/by-id/scsi-35000cca23be1dc3c /dev/disk/by-path/pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0
E: DEVNAME=/dev/sdn
E: DEVPATH=/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host2/port-2:0/expander-2:0/port-2:0:11/end_device-2:0:11/target2:0:11/2:0:11:0/block/sdn
E: DEVTYPE=disk
E: ID_BUS=scsi
E: ID_MODEL=HGST_HUH728080AL
E: ID_MODEL_ENC=HGST\x20HUH728080AL
E: ID_PATH=pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0
E: ID_PATH_TAG=pci-0000_05_00_0-sas-exp0x500605b0000272bf-phy11-lun-0
E: ID_REVISION=W7J0
E: ID_SCSI=1
E: ID_SCSI_SERIAL=ZZZZH3VX
E: ID_SERIAL=35000cca23be1dc3c
E: ID_SERIAL_SHORT=5000cca23be1dc3c
E: ID_TYPE=disk
E: ID_VENDOR=ATA
E: ID_VENDOR_ENC=ATA\x20\x20\x20\x20\x20
E: ID_WWN=0x5000cca23be1dc3c
E: ID_WWN_WITH_EXTENSION=0x5000cca23be1dc3c
E: MAJOR=8
E: MINOR=208
E: SUBSYSTEM=block
E: TAGS=:systemd:
```
3. Run ata_id (unpatched) (Outputs nothing, RC=2)
```
root@machine:~# strace -e ioctl /lib/udev/ata_id /dev/sdn -x
ioctl(3, SG_IO, {'Q', BSG_PROTOCOL_SCSI, BSG_SUB_PROTOCOL_SCSI_CMD, request[6]=[12, 00, 00, 00, 24, 00], request_tag=0, request_attr=0, request_priority=0, request_extra=0, max_response_len=32, dout_iovec_count=0, dout_xfer_len=0, din_iovec_count=0, din_xfer_len=36, timeout=30000, flags=0, usr_ptr=0, spare_in=0, dout[0]=NULL}) = -1 EINVAL (Invalid argument)
ioctl(3, SG_IO, {'S', SG_DXFER_FROM_DEV, cmd[6]=[12, 00, 00, 00, 24, 00], mx_sb_len=32, iovec_count=0, dxfer_len=36, timeout=30000, flags=0, data[36]=[00, 00, 06, 12, 45, 00, 00, 02, 41, 54, 41, 20, 20, 20, 20, 20, 48, 47, 53, 54, 20, 48, 55, 48, 37, 32, 38, 30, 38, 30, 41, 4c, ...], status=00, masked_status=00, sb[0]=[], host_status=0, driver_status=0, resid=0, duration=1, info=0}) = 0
ioctl(3, SG_IO, {'Q', BSG_PROTOCOL_SCSI, BSG_SUB_PROTOCOL_SCSI_CMD, request[12]=[a1, 08, 2e, 00, 01, 00, 00, 00, 00, ec, 00, 00], request_tag=0, request_attr=0, request_priority=0, request_extra=0, max_response_len=32, dout_iovec_count=0, dout_xfer_len=0, din_iovec_count=0, din_xfer_len=512, timeout=30000, flags=0, usr_ptr=0, spare_in=0, dout[0]=NULL}) = -1 EINVAL (Invalid argument)
ioctl(3, SG_IO, {'S', SG_DXFER_FROM_DEV, cmd[12]=[a1, 08, 2e, 00, 01, 00, 00, 00, 00, ec, 00, 00], mx_sb_len=32, iovec_count=0, dxfer_len=512, timeout=30000, flags=0, data[0]=[], status=02, masked_status=01, sb[18]=[70, 00, 01, 00, 00, 00, 00, 0a, 00, 00, 00, 00, 00, 1d, 00, 00, 00, 00], host_status=0, driver_status=0x8, resid=512, duration=0, info=0x1}) = 0
ioctl(3, HDIO_GET_IDENTITY, 0x7ffe408f7590) = -1 EINVAL (Invalid argument)
+++ exited with 2 +++
```
Sense buffers visible with the strace:
`sb[18]=[70, 00, 01, 00, 00, 00, 00, 0a, 00, 00, 00, 00, 00, 1d, 00, 00, 00, 00]` is the important bit, see 70, 0a and 1d bytes
4. Run patched version: model is HGST_HUH728080ALE604 as expected, ATA attributes are
correctly populated.
```
root@machine:~# ./ata_id /dev/sdn -x
ID_ATA=1
ID_TYPE=disk
ID_BUS=ata
ID_MODEL=HGST_HUH728080ALE604
ID_MODEL_ENC=HGST\x20HUH728080ALE604\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_REVISION=A4GNW7J0
ID_SERIAL=HGST_HUH728080ALE604_ZZZZH3VX
ID_SERIAL_SHORT=ZZZZH3VX
ID_ATA_WRITE_CACHE=1
ID_ATA_WRITE_CACHE_ENABLED=1
ID_ATA_FEATURE_SET_HPA=1
ID_ATA_FEATURE_SET_HPA_ENABLED=1
ID_ATA_FEATURE_SET_PM=1
ID_ATA_FEATURE_SET_PM_ENABLED=1
ID_ATA_FEATURE_SET_SECURITY=1
ID_ATA_FEATURE_SET_SECURITY_ENABLED=0
ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=66522
ID_ATA_FEATURE_SET_SMART=1
ID_ATA_FEATURE_SET_SMART_ENABLED=1
ID_ATA_FEATURE_SET_PUIS=1
ID_ATA_FEATURE_SET_PUIS_ENABLED=0
ID_ATA_FEATURE_SET_APM=1
ID_ATA_FEATURE_SET_APM_ENABLED=1
ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=254
ID_ATA_DOWNLOAD_MICROCODE=1
ID_ATA_SATA=1
ID_ATA_SATA_SIGNAL_RATE_GEN2=1
ID_ATA_SATA_SIGNAL_RATE_GEN1=1
ID_ATA_ROTATION_RATE_RPM=7200
ID_WWN=0x5000cca23be1dc3c
ID_WWN_WITH_EXTENSION=0x5000cca23be1dc3c
```
5. Drop it in place and verify: we see that ata_id does work.
```
root@hw1-b01left-2212a:~# udevadm test /block/sdn
<truncated>
GROUP 6 /lib/udev/rules.d/50-udev-default.rules:55
IMPORT 'ata_id --export /dev/sdn' /lib/udev/rules.d/60-persistent-storage.rules:33
starting 'ata_id --export /dev/sdn'
'ata_id --export /dev/sdn'(out) 'ID_ATA=1'
'ata_id --export /dev/sdn'(out) 'ID_TYPE=disk'
'ata_id --export /dev/sdn'(out) 'ID_BUS=ata'
'ata_id --export /dev/sdn'(out) 'ID_MODEL=HGST_HUH728080ALE604'
'ata_id --export /dev/sdn'(out) 'ID_MODEL_ENC=HGST\x20HUH728080ALE604\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20'
'ata_id --export /dev/sdn'(out) 'ID_REVISION=A4GNW7J0'
'ata_id --export /dev/sdn'(out) 'ID_SERIAL=HGST_HUH728080ALE604_ZZZZH3VX'
'ata_id --export /dev/sdn'(out) 'ID_SERIAL_SHORT=ZZZZH3VX'
'ata_id --export /dev/sdn'(out) 'ID_ATA_WRITE_CACHE=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_WRITE_CACHE_ENABLED=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_HPA=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_HPA_ENABLED=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_PM=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_PM_ENABLED=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_SECURITY=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_SECURITY_ENABLED=0'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=66522'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_SMART=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_SMART_ENABLED=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_PUIS=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_PUIS_ENABLED=0'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_APM=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_APM_ENABLED=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=254'
'ata_id --export /dev/sdn'(out) 'ID_ATA_DOWNLOAD_MICROCODE=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_SATA=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_SATA_SIGNAL_RATE_GEN2=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_SATA_SIGNAL_RATE_GEN1=1'
'ata_id --export /dev/sdn'(out) 'ID_ATA_ROTATION_RATE_RPM=7200'
'ata_id --export /dev/sdn'(out) 'ID_WWN=0x5000cca23be1dc3c'
'ata_id --export /dev/sdn'(out) 'ID_WWN_WITH_EXTENSION=0x5000cca23be1dc3c'
Process 'ata_id --export /dev/sdn' succeeded.
LINK 'disk/by-id/ata-HGST_HUH728080ALE604_ZZZZH3VX' /lib/udev/rules.d/60-persistent-storage.rules:47
IMPORT builtin 'path_id' /lib/udev/rules.d/60-persistent-storage.rules:65
LINK 'disk/by-path/pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0' /lib/udev/rules.d/60-persistent-storage.rules:66
IMPORT builtin 'blkid' /lib/udev/rules.d/60-persistent-storage.rules:81
probe /dev/sdn raid offset=0
LINK 'disk/by-id/wwn-0x5000cca23be1dc3c' /lib/udev/rules.d/60-persistent-storage.rules:88
RUN '/usr/lib/python-dsnet-appliance/hotplug disk udev-disk-add' /etc/udev/rules.d/99-appliance-hotplug.rules:1
update old name, '/dev/disk/by-id/scsi-35000cca23be1dc3c' no longer belonging to '/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host2/port-2:0/expander-2:0/port-2:0:11/end_device-2:0:11/target2:0:11/2:0:11:0/block/sdn'
no reference left, remove '/dev/disk/by-id/scsi-35000cca23be1dc3c'
handling device node '/dev/sdn', devnum=b8:208, mode=0660, uid=0, gid=6
preserve permissions /dev/sdn, 060660, uid=0, gid=6
preserve already existing symlink '/dev/block/8:208' to '../sdn'
creating link '/dev/disk/by-id/ata-HGST_HUH728080ALE604_ZZZZH3VX' to '/dev/sdn'
creating symlink '/dev/disk/by-id/ata-HGST_HUH728080ALE604_ZZZZH3VX' to '../../sdn'
found 'b8:208' claiming '/run/udev/links/\x2fdisk\x2fby-id\x2fwwn-0x5000cca23be1dc3c'
creating link '/dev/disk/by-id/wwn-0x5000cca23be1dc3c' to '/dev/sdn'
preserve already existing symlink '/dev/disk/by-id/wwn-0x5000cca23be1dc3c' to '../../sdn'
found 'b8:208' claiming '/run/udev/links/\x2fdisk\x2fby-path\x2fpci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0'
creating link '/dev/disk/by-path/pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0' to '/dev/sdn'
preserve already existing symlink '/dev/disk/by-path/pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0' to '../../sdn'
created db file '/run/udev/data/b8:208' for '/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host2/port-2:0/expander-2:0/port-2:0:11/end_device-2:0:11/target2:0:11/2:0:11:0/block/sdn'
ACTION=add
DEVLINKS=/dev/disk/by-path/pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0 /dev/disk/by-id/ata-HGST_HUH728080ALE604_ZZZZH3VX /dev/disk/by-id/wwn-0x5000cca23be1dc3c
DEVNAME=/dev/sdn
DEVPATH=/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host2/port-2:0/expander-2:0/port-2:0:11/end_device-2:0:11/target2:0:11/2:0:11:0/block/sdn
DEVTYPE=disk
ID_ATA=1
ID_ATA_DOWNLOAD_MICROCODE=1
ID_ATA_FEATURE_SET_APM=1
ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=254
ID_ATA_FEATURE_SET_APM_ENABLED=1
ID_ATA_FEATURE_SET_HPA=1
ID_ATA_FEATURE_SET_HPA_ENABLED=1
ID_ATA_FEATURE_SET_PM=1
ID_ATA_FEATURE_SET_PM_ENABLED=1
ID_ATA_FEATURE_SET_PUIS=1
ID_ATA_FEATURE_SET_PUIS_ENABLED=0
ID_ATA_FEATURE_SET_SECURITY=1
ID_ATA_FEATURE_SET_SECURITY_ENABLED=0
ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=66522
ID_ATA_FEATURE_SET_SMART=1
ID_ATA_FEATURE_SET_SMART_ENABLED=1
ID_ATA_ROTATION_RATE_RPM=7200
ID_ATA_SATA=1
ID_ATA_SATA_SIGNAL_RATE_GEN1=1
ID_ATA_SATA_SIGNAL_RATE_GEN2=1
ID_ATA_WRITE_CACHE=1
ID_ATA_WRITE_CACHE_ENABLED=1
ID_BUS=ata
ID_MODEL=HGST_HUH728080ALE604
ID_MODEL_ENC=HGST\x20HUH728080ALE604\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_PATH=pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0
ID_PATH_TAG=pci-0000_05_00_0-sas-exp0x500605b0000272bf-phy11-lun-0
ID_REVISION=A4GNW7J0
ID_SERIAL=HGST_HUH728080ALE604_ZZZZH3VX
ID_SERIAL_SHORT=ZZZZH3VX
ID_TYPE=disk
ID_WWN=0x5000cca23be1dc3c
ID_WWN_WITH_EXTENSION=0x5000cca23be1dc3c
MAJOR=8
MINOR=208
SUBSYSTEM=block
TAGS=:systemd:
USEC_INITIALIZED=6055690
run: '/usr/lib/python-dsnet-appliance/hotplug disk udev-disk-add'
Unload module index
Unloaded link configuration context.
```
6. Query just to double check: (ID_BUS=ata, model correct, etc).
```
root@machine:~# udevadm info /dev/sdn
P: /devices/pci0000:00/0000:00:03.0/0000:05:00.0/host2/port-2:0/expander-2:0/port-2:0:11/end_device-2:0:11/target2:0:11/2:0:11:0/block/sdn
N: sdn
S: disk/by-id/ata-HGST_HUH728080ALE604_ZZZZH3VX
S: disk/by-id/wwn-0x5000cca23be1dc3c
S: disk/by-path/pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0
E: DEVLINKS=/dev/disk/by-id/wwn-0x5000cca23be1dc3c /dev/disk/by-path/pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0 /dev/disk/by-id/ata-HGST_HUH728080ALE604_ZZZZH3VX
E: DEVNAME=/dev/sdn
E: DEVPATH=/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host2/port-2:0/expander-2:0/port-2:0:11/end_device-2:0:11/target2:0:11/2:0:11:0/block/sdn
E: DEVTYPE=disk
E: ID_ATA=1
E: ID_ATA_DOWNLOAD_MICROCODE=1
E: ID_ATA_FEATURE_SET_APM=1
E: ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=254
E: ID_ATA_FEATURE_SET_APM_ENABLED=1
E: ID_ATA_FEATURE_SET_HPA=1
E: ID_ATA_FEATURE_SET_HPA_ENABLED=1
E: ID_ATA_FEATURE_SET_PM=1
E: ID_ATA_FEATURE_SET_PM_ENABLED=1
E: ID_ATA_FEATURE_SET_PUIS=1
E: ID_ATA_FEATURE_SET_PUIS_ENABLED=0
E: ID_ATA_FEATURE_SET_SECURITY=1
E: ID_ATA_FEATURE_SET_SECURITY_ENABLED=0
E: ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=66522
E: ID_ATA_FEATURE_SET_SMART=1
E: ID_ATA_FEATURE_SET_SMART_ENABLED=1
E: ID_ATA_ROTATION_RATE_RPM=7200
E: ID_ATA_SATA=1
E: ID_ATA_SATA_SIGNAL_RATE_GEN1=1
E: ID_ATA_SATA_SIGNAL_RATE_GEN2=1
E: ID_ATA_WRITE_CACHE=1
E: ID_ATA_WRITE_CACHE_ENABLED=1
E: ID_BUS=ata
E: ID_MODEL=HGST_HUH728080ALE604
E: ID_MODEL_ENC=HGST\x20HUH728080ALE604\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
E: ID_PATH=pci-0000:05:00.0-sas-exp0x500605b0000272bf-phy11-lun-0
E: ID_PATH_TAG=pci-0000_05_00_0-sas-exp0x500605b0000272bf-phy11-lun-0
E: ID_REVISION=A4GNW7J0
E: ID_SERIAL=HGST_HUH728080ALE604_ZZZZH3VX
E: ID_SERIAL_SHORT=ZZZZH3VX
E: ID_TYPE=disk
E: ID_WWN=0x5000cca23be1dc3c
E: ID_WWN_WITH_EXTENSION=0x5000cca23be1dc3c
E: MAJOR=8
E: MINOR=208
E: SUBSYSTEM=block
E: TAGS=:systemd:
E: USEC_INITIALIZED=6055690
```
If I install the same disk into a machine using an ATA driver, this behavior changes:
```
root@machine2:~# sg_vpd -p ai /dev/sdb
ATA information VPD page:
SAT Vendor identification: linux
SAT Product identification: libata
SAT Product revision level: 3.00
Device signature indicates SATA transport
ATA command IDENTIFY DEVICE response summary:
model: HGST HUH728080ALE604
serial number: ZZZZH3VX
firmware revision: A4GNW7J0
root@machine-2:~# /lib/udev/ata_id -x /dev/sdb
ID_ATA=1
ID_TYPE=disk
ID_BUS=ata
ID_MODEL=HGST_HUH728080ALE604
ID_MODEL_ENC=HGST\x20HUH728080ALE604\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_REVISION=A4GNW7J0
<truncated>
```
systemd-commit: 402fecff19d42bb06caed1a3a32262c18087b7f1
Author: Ryan Attard <frontrunner4000@gmail.com>
Date: Fri Oct 4 07:52:49 2019 -0500
kaniini
approved these changes
Oct 16, 2021
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Author: Ryan Attard frontrunner4000@gmail.com
ata_id: Add support for host managed zone block devices (#14933)
If the peripheral device type is that of a host managed zone block device (0x14),
the device supports the same identification mechanisms as conventional disks (0x00).
systemd-commit: 06654d1225157ef2031559e47109730111514be2