/dev/sdb*在引导- initramfs不加载uas和usb_storage模块后不可用
/dev/sdb*在引导- initramfs不加载uas和usb_storage模块后不可用
提问于 2016-07-31 19:25:12
我的Debian测试系统上的Initramfs无法自动加载外部USB3HDD (Seagate 1T)所需的内核模块，如果它在initramfs启动时已经插入。如果我引导到initramfs外壳，插入电缆并将其插入，那么设备将显示，我将能够挂载它。
我不需要initramfs中的这个设备，但是由initramfs创建的/dev/文件系统被传递到主操作系统，在那里我确实需要它。我必须把电缆插上，才能使设备可用。
如何设置initramfs来解决此设备？或者，我如何告诉主操作系统遍历硬件总线，并处理initramfs中的udev错过的所有设备？
附加信息
在我打开或打开设备后，将加载两个新模块：
# lsmod
Module Size Used by
uas 24576 0
usb_storage 69632 1 uas这些模块可以在initramfs映像中获得：
# lsinitramfs /boot/initrd.img-4.6.0-1-amd64 |grep -E '(uas|usb-storage)'
lib/modules/4.6.0-1-amd64/kernel/drivers/usb/storage/usb-storage.ko
lib/modules/4.6.0-1-amd64/kernel/drivers/usb/storage/uas.ko插入设备后的uname、dmesg和lsusb输出：
# uname -a
Linux pingwin 4.6.0-1-amd64 #1 SMP Debian 4.6.4-1 (2016-07-18) x86_64 GNU/Linux
# dmesg
[ 53.412599] usb 2-2: new SuperSpeed USB device number 2 using xhci_hcd
[ 53.429652] usb 2-2: New USB device found, idVendor=0bc2, idProduct=ab24
[ 53.429659] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[ 53.429662] usb 2-2: Product: BUP Slim BK
[ 53.429664] usb 2-2: Manufacturer: Seagate
[ 53.429667] usb 2-2: SerialNumber: NA7K016V
[ 53.455444] usbcore: registered new interface driver usb-storage
[ 53.458787] scsi host6: uas
[ 53.458962] usbcore: registered new interface driver uas
[ 53.459440] scsi 6:0:0:0: Direct-Access Seagate BUP Slim BK 0302 PQ: 0 ANSI: 6
[ 53.497569] sd 6:0:0:0: Attached scsi generic sg2 type 0
[ 53.497586] sd 6:0:0:0: [sdb] Spinning up disk...
[ 54.503950] ...ready
[ 56.518071] sd 6:0:0:0: [sdb] 1953525167 512-byte logical blocks: (1.00 TB/932 GiB)
[ 56.518077] sd 6:0:0:0: [sdb] 2048-byte physical blocks
[ 56.687950] sd 6:0:0:0: [sdb] Write Protect is off
[ 56.687960] sd 6:0:0:0: [sdb] Mode Sense: 4f 00 00 00
[ 56.688242] sd 6:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 56.699372] sdb: sdb1
[ 56.700399] sd 6:0:0:0: [sdb] Attached SCSI disk
# lsusb -v -d 0bc2:ab24
Bus 004 Device 002: ID 0bc2:ab24 Seagate RSS LLC
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 9
idVendor 0x0bc2 Seagate RSS LLC
idProduct 0xab24
bcdDevice 1.00
iManufacturer 2 Seagate
iProduct 3 BUP Slim BK
iSerial 1 NA7K016V
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 121
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 36mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 1
bNumEndpoints 4
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 98
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
MaxStreams 32
Data-in pipe (0x03)
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
MaxStreams 32
Data-out pipe (0x04)
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
MaxStreams 32
Status pipe (0x02)
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 0
Command pipe (0x01)
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 22
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000e
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 10 micro seconds
bU2DevExitLat 2047 micro seconds
Device Status: 0x000c
(Bus Powered)
U1 Enabled
U2 Enabledinitramfs和工作系统上的udevadm输出(它们几乎相同，唯一的区别是stat、iodone_cnt、ioerr_cnt、iorequest_cnt和urbnum)：
# udevadm info -a -p /sys/block/sdb on initramfs
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0/host6/target6:0:0/6:0:0:0/block/sdb':
KERNEL=="sdb"
SUBSYSTEM=="block"
DRIVER==""
ATTR{alignment_offset}=="0"
ATTR{badblocks}==""
ATTR{capability}=="50"
ATTR{discard_alignment}=="0"
ATTR{events}==""
ATTR{events_async}==""
ATTR{events_poll_msecs}=="-1"
ATTR{ext_range}=="256"
ATTR{inflight}==" 0 0"
ATTR{range}=="16"
ATTR{removable}=="0"
ATTR{ro}=="0"
ATTR{size}=="1953525167"
ATTR{stat}==" 72 0 4254 232 0 0 0 0 0 136 232"
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0/host6/target6:0:0/6:0:0:0':
KERNELS=="6:0:0:0"
SUBSYSTEMS=="scsi"
DRIVERS=="sd"
ATTRS{device_blocked}=="0"
ATTRS{device_busy}=="0"
ATTRS{dh_state}=="detached"
ATTRS{eh_timeout}=="10"
ATTRS{evt_capacity_change_reported}=="0"
ATTRS{evt_inquiry_change_reported}=="0"
ATTRS{evt_lun_change_reported}=="0"
ATTRS{evt_media_change}=="0"
ATTRS{evt_mode_parameter_change_reported}=="0"
ATTRS{evt_soft_threshold_reached}=="0"
ATTRS{inquiry}==""
ATTRS{iocounterbits}=="32"
ATTRS{iodone_cnt}=="0x7a"
ATTRS{ioerr_cnt}=="0x8"
ATTRS{iorequest_cnt}=="0x7a"
ATTRS{model}=="BUP Slim BK "
ATTRS{queue_depth}=="30"
ATTRS{queue_type}=="simple"
ATTRS{rev}=="0302"
ATTRS{scsi_level}=="7"
ATTRS{state}=="running"
ATTRS{timeout}=="30"
ATTRS{type}=="0"
ATTRS{vendor}=="Seagate "
ATTRS{vpd_pg80}==""
ATTRS{vpd_pg83}==""
ATTRS{wwid}=="naa.5000000000000001"
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0/host6/target6:0:0':
KERNELS=="target6:0:0"
SUBSYSTEMS=="scsi"
DRIVERS==""
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0/host6':
KERNELS=="host6"
SUBSYSTEMS=="scsi"
DRIVERS==""
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0':
KERNELS=="4-2:1.0"
SUBSYSTEMS=="usb"
DRIVERS=="uas"
ATTRS{authorized}=="1"
ATTRS{bAlternateSetting}==" 1"
ATTRS{bInterfaceClass}=="08"
ATTRS{bInterfaceNumber}=="00"
ATTRS{bInterfaceProtocol}=="62"
ATTRS{bInterfaceSubClass}=="06"
ATTRS{bNumEndpoints}=="04"
ATTRS{supports_autosuspend}=="0"
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2':
KERNELS=="4-2"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{authorized}=="1"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{bConfigurationValue}=="1"
ATTRS{bDeviceClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bMaxPacketSize0}=="9"
ATTRS{bMaxPower}=="144mA"
ATTRS{bNumConfigurations}=="1"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bcdDevice}=="0100"
ATTRS{bmAttributes}=="80"
ATTRS{busnum}=="4"
ATTRS{configuration}==""
ATTRS{devnum}=="2"
ATTRS{devpath}=="2"
ATTRS{idProduct}=="ab24"
ATTRS{idVendor}=="0bc2"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Seagate"
ATTRS{maxchild}=="0"
ATTRS{product}=="BUP Slim BK"
ATTRS{quirks}=="0x0"
ATTRS{removable}=="removable"
ATTRS{serial}=="NA7K016V"
ATTRS{speed}=="5000"
ATTRS{urbnum}=="371"
ATTRS{version}==" 3.00"
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4':
KERNELS=="usb4"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{authorized}=="1"
ATTRS{authorized_default}=="1"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{bConfigurationValue}=="1"
ATTRS{bDeviceClass}=="09"
ATTRS{bDeviceProtocol}=="03"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bMaxPacketSize0}=="9"
ATTRS{bMaxPower}=="0mA"
ATTRS{bNumConfigurations}=="1"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bcdDevice}=="0406"
ATTRS{bmAttributes}=="e0"
ATTRS{busnum}=="4"
ATTRS{configuration}==""
ATTRS{devnum}=="1"
ATTRS{devpath}=="0"
ATTRS{idProduct}=="0003"
ATTRS{idVendor}=="1d6b"
ATTRS{interface_authorized_default}=="1"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Linux 4.6.0-1-amd64 xhci-hcd"
ATTRS{maxchild}=="4"
ATTRS{product}=="xHCI Host Controller"
ATTRS{quirks}=="0x0"
ATTRS{removable}=="unknown"
ATTRS{serial}=="0000:00:14.0"
ATTRS{speed}=="5000"
ATTRS{urbnum}=="47"
ATTRS{version}==" 3.00"
looking at parent device '/devices/pci0000:00/0000:00:14.0':
KERNELS=="0000:00:14.0"
SUBSYSTEMS=="pci"
DRIVERS=="xhci_hcd"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x0c0330"
ATTRS{consistent_dma_mask_bits}=="64"
ATTRS{d3cold_allowed}=="1"
ATTRS{device}=="0x1e31"
ATTRS{dma_mask_bits}=="64"
ATTRS{driver_override}=="(null)"
ATTRS{enable}=="1"
ATTRS{irq}=="29"
ATTRS{local_cpulist}=="0-3"
ATTRS{local_cpus}=="0f"
ATTRS{msi_bus}=="1"
ATTRS{numa_node}=="-1"
ATTRS{subsystem_device}=="0x1949"
ATTRS{subsystem_vendor}=="0x103c"
ATTRS{vendor}=="0x8086"
looking at parent device '/devices/pci0000:00':
KERNELS=="pci0000:00"
SUBSYSTEMS==""
DRIVERS==""# udevadm info -a -p /sys/block/sdb on booted system
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0/host6/target6:0:0/6:0:0:0/block/sdb':
KERNEL=="sdb"
SUBSYSTEM=="block"
DRIVER==""
ATTR{alignment_offset}=="0"
ATTR{badblocks}==""
ATTR{capability}=="50"
ATTR{discard_alignment}=="0"
ATTR{events}==""
ATTR{events_async}==""
ATTR{events_poll_msecs}=="-1"
ATTR{ext_range}=="256"
ATTR{inflight}==" 0 0"
ATTR{range}=="16"
ATTR{removable}=="0"
ATTR{ro}=="0"
ATTR{size}=="1953525167"
ATTR{stat}==" 72 0 4254 328 0 0 0 0 0 272 328"
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0/host6/target6:0:0/6:0:0:0':
KERNELS=="6:0:0:0"
SUBSYSTEMS=="scsi"
DRIVERS=="sd"
ATTRS{device_blocked}=="0"
ATTRS{device_busy}=="0"
ATTRS{dh_state}=="detached"
ATTRS{eh_timeout}=="10"
ATTRS{evt_capacity_change_reported}=="0"
ATTRS{evt_inquiry_change_reported}=="0"
ATTRS{evt_lun_change_reported}=="0"
ATTRS{evt_media_change}=="0"
ATTRS{evt_mode_parameter_change_reported}=="0"
ATTRS{evt_soft_threshold_reached}=="0"
ATTRS{inquiry}==""
ATTRS{iocounterbits}=="32"
ATTRS{iodone_cnt}=="0xd1"
ATTRS{ioerr_cnt}=="0x48"
ATTRS{iorequest_cnt}=="0xd1"
ATTRS{model}=="BUP Slim BK "
ATTRS{queue_depth}=="30"
ATTRS{queue_type}=="simple"
ATTRS{rev}=="0302"
ATTRS{scsi_level}=="7"
ATTRS{state}=="running"
ATTRS{timeout}=="30"
ATTRS{type}=="0"
ATTRS{vendor}=="Seagate "
ATTRS{vpd_pg80}==""
ATTRS{vpd_pg83}==""
ATTRS{wwid}=="naa.5000000000000001"
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0/host6/target6:0:0':
KERNELS=="target6:0:0"
SUBSYSTEMS=="scsi"
DRIVERS==""
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0/host6':
KERNELS=="host6"
SUBSYSTEMS=="scsi"
DRIVERS==""
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2/4-2:1.0':
KERNELS=="4-2:1.0"
SUBSYSTEMS=="usb"
DRIVERS=="uas"
ATTRS{authorized}=="1"
ATTRS{bAlternateSetting}==" 1"
ATTRS{bInterfaceClass}=="08"
ATTRS{bInterfaceNumber}=="00"
ATTRS{bInterfaceProtocol}=="62"
ATTRS{bInterfaceSubClass}=="06"
ATTRS{bNumEndpoints}=="04"
ATTRS{supports_autosuspend}=="0"
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4/4-2':
KERNELS=="4-2"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{authorized}=="1"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{bConfigurationValue}=="1"
ATTRS{bDeviceClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bMaxPacketSize0}=="9"
ATTRS{bMaxPower}=="144mA"
ATTRS{bNumConfigurations}=="1"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bcdDevice}=="0100"
ATTRS{bmAttributes}=="80"
ATTRS{busnum}=="4"
ATTRS{configuration}==""
ATTRS{devnum}=="2"
ATTRS{devpath}=="2"
ATTRS{idProduct}=="ab24"
ATTRS{idVendor}=="0bc2"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Seagate"
ATTRS{maxchild}=="0"
ATTRS{product}=="BUP Slim BK"
ATTRS{quirks}=="0x0"
ATTRS{removable}=="removable"
ATTRS{serial}=="NA7K016V"
ATTRS{speed}=="5000"
ATTRS{urbnum}=="592"
ATTRS{version}==" 3.00"
looking at parent device '/devices/pci0000:00/0000:00:14.0/usb4':
KERNELS=="usb4"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{authorized}=="1"
ATTRS{authorized_default}=="1"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{bConfigurationValue}=="1"
ATTRS{bDeviceClass}=="09"
ATTRS{bDeviceProtocol}=="03"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bMaxPacketSize0}=="9"
ATTRS{bMaxPower}=="0mA"
ATTRS{bNumConfigurations}=="1"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bcdDevice}=="0406"
ATTRS{bmAttributes}=="e0"
ATTRS{busnum}=="4"
ATTRS{configuration}==""
ATTRS{devnum}=="1"
ATTRS{devpath}=="0"
ATTRS{idProduct}=="0003"
ATTRS{idVendor}=="1d6b"
ATTRS{interface_authorized_default}=="1"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Linux 4.6.0-1-amd64 xhci-hcd"
ATTRS{maxchild}=="4"
ATTRS{product}=="xHCI Host Controller"
ATTRS{quirks}=="0x0"
ATTRS{removable}=="unknown"
ATTRS{serial}=="0000:00:14.0"
ATTRS{speed}=="5000"
ATTRS{urbnum}=="47"
ATTRS{version}==" 3.00"
looking at parent device '/devices/pci0000:00/0000:00:14.0':
KERNELS=="0000:00:14.0"
SUBSYSTEMS=="pci"
DRIVERS=="xhci_hcd"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x0c0330"
ATTRS{consistent_dma_mask_bits}=="64"
ATTRS{d3cold_allowed}=="1"
ATTRS{device}=="0x1e31"
ATTRS{dma_mask_bits}=="64"
ATTRS{driver_override}=="(null)"
ATTRS{enable}=="1"
ATTRS{irq}=="29"
ATTRS{local_cpulist}=="0-3"
ATTRS{local_cpus}=="0f"
ATTRS{msi_bus}=="1"
ATTRS{numa_node}=="-1"
ATTRS{subsystem_device}=="0x1949"
ATTRS{subsystem_vendor}=="0x103c"
ATTRS{vendor}=="0x8086"
looking at parent device '/devices/pci0000:00':
KERNELS=="pci0000:00"
SUBSYSTEMS==""
DRIVERS==""# /etc/udev/udev.conf (the same on booted system and in initramfs)
# see udev.conf(5) for details
#
# udevd is started in the initramfs, so when this file is modified the
# initramfs should be rebuilt.
#udev_log="info"如果我把磁盘插入到USB 3或USB 2端口的计算机上，这并不重要.
在初始化initramfs之前插入的USB2设备是正确识别和解决的。我没有任何其他USB 3设备来验证它是否会受到影响。但是，我可以尝试在我朋友的电脑上使用这个磁盘(Ubuntu16.04)--它在引导后就可以在/dev/中使用了。
如果我通过initramfs -工具或dracut生成initramfs并不重要。
如何确保与此硬盘相关的/dev/sdb*在完全引导系统中可用，即使在引导前已插入电缆？
回答 2
Unix & Linux用户
回答已采纳
发布于 2016-07-31 22:17:44
好的，这是一个疯狂的猜测和解决办法(而不是一个正确的理解问题)，但它应该有效。
创建一个udev规则文件，例如，/etc/udev/rules.d/z30-seagate-disk.rules，并添加以下规则：
ATTRS{manufacturer}=="Seagate", ATTRS{product}=="BUP Slim BK", SYMLINK+="seagate"这将迫使udev进行第二次传递，并将磁盘添加为/dev/seagate块设备。您还需要将该文件添加到FILES变量中的/etc/mkinitcpio.conf中，以便它进入initramfs。(并运行mkinitcpio -p linux重新构建initramfs)
免责声明:在Arch上测试，在Debian上测试，也不使用USB3.0。
另一个解决方法是强制uas (USB )始终由内核加载。向文件中添加/etc/modules-load.d/seagate-disk.conf模块名：
uas
usb_storage
usbcore
scsi_mod
usb_common理论上，只需要uas，但我不能复制您的问题，因此我会尝试蛮力强制管理USB所需的一切。同样，将该文件添加到FILES中的/etc/mkinitcpio.conf中。
这将迫使内核始终加载uas。也许当udev通过总线运行时，它错误地假设USB集线器/总线没有装载任何东西，因为内核没有加载USB模块。
Unix & Linux用户
发布于 2016-08-03 07:35:41
编辑/etc/modules并添加包含uas的行。
然后运行update-initramfs (例如，update-initramfs -u -k $(uname -r)来更新当前运行的内核的initramfs。或所有已安装内核的-k all )。
/etc/modules中列出的模块将自动加载，而不管udev或其他任何东西是否检测到它们是必需的。
如果您需要或希望强制加载模块的特定顺序，因此模块foo总是在模块bar之前加载(当然，除非早期加载的模块依赖于bar)，这也很有用。
与modprobe加载的任何模块一样，您可以在/etc/modprobe.d/中的文件中设置加载时间选项。
例如，我在spl和zfs中列出了/etc/modules，/etc/modprobe.d/zfs.conf包含：
# use minimum 4GB and maxmum of 8GB RAM for ZFS ARC
options zfs zfs_arc_min=4294967296 zfs_arc_max=8589934592如果您想知道模块知道哪些加载时选项，请使用modinfo [module] | grep parm。模块uas没有。
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原文链接：
https://unix.stackexchange.com/questions/299478
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