你好，Ubuntu 社区！
我的问题是一个带有两个端口的外部 USB 外壳。一个配备了 SSD，另一个配备了 HDD。SSD 负责日常工作，HDD 仅用于备份。HDD 经常旋转，我估计每 20 分钟一次。但备份每天只有 2-3 次。我尝试了“noauto”和 systemd-mount 来安装 HDD，但它一直在旋转。
系统是运行 Ubuntu Server 20.04.5 LTS 的 Rasperry Pi 3B+。
以下是来自 Housing 的 dmesg 详细信息
[ 6.371979] usb 1-1.1.2: new high-speed USB device number 6 using dwc_otg
[ 6.473823] usb 1-1.1.2: New USB device found, idVendor=152d, idProduct=0551, bcdDevice= 1.00
[ 6.473834] usb 1-1.1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=5
[ 6.473840] usb 1-1.1.2: Product: USB to ATA/ATAPI Bridge
[ 6.473846] usb 1-1.1.2: Manufacturer: JMicron
[ 6.473853] usb 1-1.1.2: SerialNumber: 152D20551000
[ 6.474947] usb-storage 1-1.1.2:1.0: USB Mass Storage device detected
[ 6.475387] scsi host1: usb-storage 1-1.1.2:1.0
[ 6.783563] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 9.745612] scsi 1:0:0:0: Direct-Access Samsung SSD 840 EVO 500G PQ: 0 ANSI: 2 CCS
[ 9.746049] scsi 1:0:0:1: Direct-Access ST2000DM 008-2UB102 PQ: 0 ANSI: 2 CCS
[ 9.746724] sd 1:0:0:0: Attached scsi generic sg1 type 0
[ 9.747063] sd 1:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/466 GiB)
[ 9.747136] scsi 1:0:0:1: Attached scsi generic sg2 type 0
[ 9.747417] sd 1:0:0:0: [sdb] Write Protect is off
[ 9.747426] sd 1:0:0:0: [sdb] Mode Sense: 28 00 00 00
[ 9.747785] sd 1:0:0:1: [sdc] 3907029168 512-byte logical blocks: (2.00 TB/1.82 TiB)
[ 9.748087] sd 1:0:0:0: [sdb] No Caching mode page found
[ 9.748401] sd 1:0:0:1: [sdc] Write Protect is off
[ 9.753576] sd 1:0:0:0: [sdb] Assuming drive cache: write through
[ 9.753578] sd 1:0:0:1: [sdc] Mode Sense: 28 00 00 00
[ 9.753877] sd 1:0:0:1: [sdc] No Caching mode page found
[ 9.765295] sd 1:0:0:1: [sdc] Assuming drive cache: write through
[ 9.818826] sdc: sdc1 sdc2
[ 9.819152] sdb: sdb1
[ 9.833642] sd 1:0:0:1: [sdc] Attached SCSI disk
[ 9.833895] sd 1:0:0:0: [sdb] Attached SCSI disk
系统盘
Bus 001 Device 006: ID 152d:0551 JMicron Technology Corp. / JMicron USA Technology Corp. JMS551 SuperSpeed two ports SATA 3Gb/s bridge
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sdb 8:16 0 465.8G 0 disk
└─sdb1 8:17 0 465.8G 0 part /SSD
sdc 8:32 0 1.8T 0 disk
├─sdc1 8:33 0 1T 0 part /HD1
└─sdc2 8:34 0 839G 0 part /HD2
HDD 显示已安装，大多数时间 /HD1 和 /HD2 都处于卸载状态。
之前，这个外壳在 Ubuntu 16 下使用，带有 2 个 HDD。我认为这个问题是在 Ubuntu 20 中出现的。HDD/SDD 的更改是同时发生的。
有什么建议吗？提前谢谢 Wolfgang