当磁盘很多时, Linux 识别磁盘的顺序不被保证, 这时候, fstab 用
UUID=ef42f56b-8f0f-46c1-aced-93eafcfc8ca2
或
LABEL=xx-name
比较好
读取和设置磁盘标签:
e2label /dev/sdx e2label /dev/sdx label-name-xxx
读取所有磁盘的 UUID 和 LABEL:
blkid /dev/sda: LABEL="a" UUID="feeee697-d48d-4454-beed-9dc81dfea439" TYPE="ext4" /dev/sdc: LABEL="c" UUID="86d6cfd0-4aa7-400e-9796-28c9f3f020a9" TYPE="ext4" /dev/sdd: LABEL="d" UUID="ed0ba712-cf94-4f90-a096-f7eb9cf723ef" TYPE="ext4" /dev/sdb: LABEL="b" UUID="b3a3e8f6-b01b-4702-8058-c52910b95fda" TYPE="ext4" /dev/sdr: UUID="ef42f56b-8f0f-46c1-aced-93eafcfc8ca2" TYPE="xfs" /dev/sdt1: UUID="30630453-034e-471f-965a-2cd6aa2766e2" TYPE="ext4" /dev/sdt2: UUID="3702f8f8-357a-4771-9cd9-e99b23b623eb" TYPE="ext4" /dev/sdt3: UUID="6240cbde-0a01-4f76-88de-55f939004a76" TYPE="ext4" /dev/sde: LABEL="e" UUID="7ad1ce11-28f3-4844-9408-eccb9174fd5f" TYPE="ext4" /dev/sdg: LABEL="g" UUID="9b09e9e4-566d-4de9-a37c-dcfa47672e6c" TYPE="ext4" /dev/sdi: LABEL="i" UUID="8674eb39-f68c-45d9-bdaf-c533ac0e9dd2" TYPE="ext4" /dev/sdl: LABEL="l" UUID="17909273-f08c-44c5-a949-d6785fd2bed1" TYPE="ext4" /dev/sdq: UUID="e519c759-031b-4754-a4c1-3d071105cd1e" TYPE="xfs" /dev/sds1: UUID="b562b108-1802-4647-a682-d1d87677e25b" TYPE="ext4" /dev/sdm: LABEL="m" UUID="89d50b32-39e0-4ce6-941e-55ce073a39f0" TYPE="ext4" /dev/sdh: LABEL="h" UUID="eb81690b-664c-46db-9244-41af9bd70da3" TYPE="ext4" /dev/sdp: LABEL="p" UUID="4692ee73-470b-4996-8fd1-81eb1187ef8f" TYPE="ext4" /dev/sdo: LABEL="o" UUID="e9cc6c88-efbf-41a2-ac31-ad6afbd1d56b" TYPE="ext4" /dev/sdf: LABEL="f" UUID="08f3d144-667d-45c6-a2f8-a60287b733b8" TYPE="ext4" /dev/sdk: LABEL="k" UUID="832faea8-43e6-4ed6-b6eb-d6524a478954" TYPE="ext4" /dev/sdj: LABEL="j" UUID="0564b130-3086-4da8-8655-8af56896b51e" TYPE="ext4" /dev/sdn: LABEL="n" UUID="be1d3c23-b97d-409d-865f-b93cf7e23005" TYPE="ext4"
/etc/fstab 例子:
# # /etc/fstab # Created by anaconda on Wed Aug 17 21:54:02 2016 # # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info # UUID=b562b108-1802-4647-a682-d1d87677e25b / ext4 defaults 1 1 UUID=e519c759-031b-4754-a4c1-3d071105cd1e /data1 xfs defaults,noatime 0 0 UUID=ef42f56b-8f0f-46c1-aced-93eafcfc8ca2 /data2 xfs defaults,noatime 0 0 # LABEL=a /mnt/a xfs defaults,noatime 0 0 LABEL=b /mnt/b xfs defaults,noatime 0 0 LABEL=c /mnt/c xfs defaults,noatime 0 0 LABEL=d /mnt/d xfs defaults,noatime 0 0 LABEL=e /mnt/e xfs defaults,noatime 0 0 LABEL=f /mnt/f xfs defaults,noatime 0 0 LABEL=g /mnt/g xfs defaults,noatime 0 0 LABEL=h /mnt/h xfs defaults,noatime 0 0 LABEL=i /mnt/i xfs defaults,noatime 0 0 LABEL=j /mnt/j xfs defaults,noatime 0 0 LABEL=k /mnt/k xfs defaults,noatime 0 0 LABEL=l /mnt/l xfs defaults,noatime 0 0 LABEL=m /mnt/m xfs defaults,noatime 0 0 LABEL=n /mnt/n xfs defaults,noatime 0 0 LABEL=o /mnt/o xfs defaults,noatime 0 0 LABEL=p /mnt/p xfs defaults,noatime 0 0 #LABEL=ssd-120g-1 /mnt/_ ext4 defaults,noatime 0 0 #UUID=aeb3cd55-3c6f-4ee2-8dba-11fae4269394 swap swap defaults 0 0
还有个 lsblk 命令可以看磁盘信息。