lsblk命令详解

2023-11-28 12:23| 来源: 网络整理| 查看: 265

lsblk命令详解

lsblk命令用来查看block设备的信息.

主要应用场景: 获取wwnid,获取块设备列表,获取块设备类型(ssd,hdd),获取块设备的size等信息.

数据来源: /sys/dev/block

返回码:

0: success 1: failure 32: 找不到所有指定设备 64: 一些设备找到了,一些设备没找到

类似的命令:

findmnt , blkid, ls

帮助信息:

➜ ~ lsblk --help Usage: lsblk [options] [ ...] List information about block devices. 选项： -a, --all print all devices -b, --bytes print SIZE in bytes rather than in human readable format -d, --nodeps don't print slaves or holders -D, --discard print discard capabilities -e, --exclude exclude devices by major number (default: RAM disks) -f, --fs output info about filesystems -i, --ascii use ascii characters only -I, --include show only devices with specified major numbers -J, --json use JSON output format -l, --list use list format output -m, --perms output info about permissions -n, --noheadings don't print headings -o, --output output columns -O, --output-all output all columns -p, --paths print complete device path -P, --pairs use key="value" output format -r, --raw use raw output format -s, --inverse inverse dependencies -S, --scsi output info about SCSI devices -t, --topology output info about topology -x, --sort sort output by -h, --help display this help and exit -V, --version output version information and exit Available columns (for --output): NAME device name KNAME internal kernel device name MAJ:MIN major:minor device number FSTYPE filesystem type MOUNTPOINT where the device is mounted LABEL filesystem LABEL UUID filesystem UUID PARTTYPE partition type UUID PARTLABEL partition LABEL PARTUUID partition UUID PARTFLAGS partition flags RA read-ahead of the device RO read-only device RM removable device HOTPLUG removable or hotplug device (usb, pcmcia, ...) MODEL device identifier SERIAL disk serial number SIZE size of the device STATE state of the device OWNER user name GROUP group name MODE device node permissions ALIGNMENT alignment offset MIN-IO minimum I/O size OPT-IO optimal I/O size PHY-SEC physical sector size LOG-SEC logical sector size ROTA rotational device, 0是不可旋转(ssd),1是可旋转(hdd) SCHED I/O scheduler name RQ-SIZE request queue size TYPE device type DISC-ALN discard alignment offset DISC-GRAN discard granularity DISC-MAX discard max bytes DISC-ZERO discard zeroes data WSAME write same max bytes WWN unique storage identifier RAND adds randomness PKNAME internal parent kernel device name HCTL Host:Channel:Target:Lun for SCSI TRAN device transport type SUBSYSTEMS de-duplicated chain of subsystems REV device revision VENDOR device vendor

lsblk 命令输出 default 参数是-a, --all

➜ ~ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop1 7:1 0 55.8M 1 loop /snap/kata-containers/288 sdd 8:48 0 1.8T 0 disk └─sdd1 8:49 0 1.8T 0 part sdb 8:16 0 119.2G 0 disk ├─sdb2 8:18 0 915M 0 part └─sdb1 8:17 0 118.4G 0 part loop4 7:4 0 69.8M 1 loop /snap/kata-containers/352 sr0 11:0 1 1024M 0 rom loop2 7:2 0 89.4M 1 loop /snap/core/6818 loop0 7:0 0 88.4M 1 loop /snap/core/6964 sde 8:64 0 1.8T 0 disk ├─sde2 8:66 0 1.8T 0 part └─sde1 8:65 0 128M 0 part sdc 8:32 0 477G 0 disk ├─sdc2 8:34 0 372G 0 part /home ├─sdc5 8:37 0 9.5G 0 part [SWAP] ├─sdc3 8:35 0 1K 0 part └─sdc1 8:33 0 95.4G 0 part / loop3 7:3 0 89.3M 1 loop /snap/core/6673

lsblk -b , --bytes ,输出单位为字节

➜ ~ lsblk -b NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop1 7:1 0 58478592 1 loop /snap/kata-containers/288 sdd 8:48 0 2000398934016 0 disk └─sdd1 8:49 0 2000397795328 0 part sdb 8:16 0 128035676160 0 disk ├─sdb2 8:18 0 959447040 0 part └─sdb1 8:17 0 127071901696 0 part loop4 7:4 0 73129984 1 loop /snap/kata-containers/352 sr0 11:0 1 1073741312 0 rom loop2 7:2 0 93720576 1 loop /snap/core/6818 loop0 7:0 0 92733440 1 loop /snap/core/6964 sde 8:64 0 2000398934016 0 disk ├─sde2 8:66 0 2000263577600 0 part └─sde1 8:65 0 134217728 0 part sdc 8:32 0 512110190592 0 disk ├─sdc2 8:34 0 399469707264 0 part /home ├─sdc5 8:37 0 10239344640 0 part [SWAP] ├─sdc3 8:35 0 1024 0 part └─sdc1 8:33 0 102398689280 0 part / loop3 7:3 0 93581312 1 loop /snap/core/6673

lsblk -D , --discard, 打印遗弃功能列表, (没详细查)

➜ ~ lsblk -D NAME DISC-ALN DISC-GRAN DISC-MAX DISC-ZERO loop1 0 4K 4G 0 sdd 0 4K 2G 0 └─sdd1 0 4K 2G 0 sdb 0 512B 2G 0 ├─sdb2 0 512B 2G 0 └─sdb1 0 512B 2G 0 loop4 0 4K 4G 0 sr0 0 0B 0B 0 loop2 0 4K 4G 0 loop0 0 4K 4G 0 sde 0 0B 0B 0 ├─sde2 0 0B 0B 0 └─sde1 0 0B 0B 0 sdc 0 512B 2G 0 ├─sdc2 0 512B 2G 0 ├─sdc5 0 512B 2G 0 ├─sdc3 0 512B 2G 0 └─sdc1 0 512B 2G 0 loop3 0 4K 4G 0

lsblk -d [/dev/sdx], --nodeps ,打印指定设备的信息,或者打印所有设备的信息

➜ ~ lsblk -d NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop1 7:1 0 55.8M 1 loop /snap/kata-containers/288 sdd 8:48 0 1.8T 0 disk sdb 8:16 0 119.2G 0 disk loop4 7:4 0 69.8M 1 loop /snap/kata-containers/352 sr0 11:0 1 1024M 0 rom loop2 7:2 0 89.4M 1 loop /snap/core/6818 loop0 7:0 0 88.4M 1 loop /snap/core/6964 sde 8:64 0 1.8T 0 disk sdc 8:32 0 477G 0 disk loop3 7:3 0 89.3M 1 loop /snap/core/6673 ➜ ~ lsblk -d /dev/sdc NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdc 8:32 0 477G 0 disk

lsblk -e, --exclude list , 排除major id列表

➜ ~ lsblk -e 7 NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdd 8:48 0 1.8T 0 disk └─sdd1 8:49 0 1.8T 0 part sdb 8:16 0 119.2G 0 disk ├─sdb2 8:18 0 915M 0 part └─sdb1 8:17 0 118.4G 0 part sr0 11:0 1 1024M 0 rom sde 8:64 0 1.8T 0 disk ├─sde2 8:66 0 1.8T 0 part └─sde1 8:65 0 128M 0 part sdc 8:32 0 477G 0 disk ├─sdc2 8:34 0 372G 0 part /home ├─sdc5 8:37 0 9.5G 0 part [SWAP] ├─sdc3 8:35 0 1K 0 part └─sdc1 8:33 0 95.4G 0 part / ➜ ~ lsblk -e 7,8 NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sr0 11:0 1 1024M 0 rom

lsblk -f, --fs , 输出设备的文件系统信息

同lsblk -o NAME,FSTYPE,LABEL,UUID,MOUNTPOINT

➜ ~ lsblk -f NAME FSTYPE LABEL UUID MOUNTPOINT loop1 squashfs /snap/kata-containers/288 sdd └─sdd1 ntfs Volume2 CA9015A6901599D1 sdb ├─sdb2 ntfs 30EAC3FEEAC3BE7A └─sdb1 ntfs OS_WIN10 0600EC5800EC4FEB loop4 squashfs /snap/kata-containers/352 sr0 loop2 squashfs /snap/core/6818 loop0 squashfs /snap/core/6964 sde ├─sde2 ntfs 专用存储 B6D47A52D47A1539 └─sde1 sdc ├─sdc2 ext4 53842090-4ad6-4472-ad35-53b4d7b33bf8 /home ├─sdc5 swap 382e4b22-503e-4911-bf2f-1167

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