我已更新至 Ubuntu 15.04，现在我的交换分区似乎无法挂载。我不是专家，但看起来该分区似乎不再具有 UUID。如何让交换分区再次激活？
sudo journalctl -b | grep swap
Apr 26 21:21:13 MacBook systemd[1]: Activating swap Swap Partition...
Apr 26 21:21:13 MacBook swapon[355]: swapon: /dev/sda5: read swap header failed
Apr 26 21:21:13 MacBook systemd[1]: dev-sda5.swap swap process exited, code=exited status=255
Apr 26 21:21:13 MacBook systemd[1]: Failed to activate swap Swap Partition.
Apr 26 21:21:13 MacBook systemd[1]: Unit dev-sda5.swap entered failed state.
Apr 26 21:22:41 MacBook systemd[1]: Job swap.target/start failed with result 'dependency'.
Apr 26 21:22:41 MacBook systemd[1]: Job dev-disk-by\x2duuid-3e396c03\x2d9185\x2d47b6\x2d9f68\x2d3450be86289f.swap/start failed with result 'dependency'.
Apr 26 21:24:12 MacBook systemd[1]: Job dev-disk-by\x2duuid-3e396c03\x2d9185\x2d47b6\x2d9f68\x2d3450be86289f.swap/start failed with result 'dependency'.
cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda3 during installation
UUID=f25d1301-fc5c-4f42-862b-c0097261522c / ext3 errors=remount-ro 0 1
# swap was on /dev/sda5 during installation
UUID=3e396c03-9185-47b6-9f68-3450be86289f none swap sw 0 0
lsblk -f
NAME FSTYPE LABEL UUID MOUNTPOINT
sda
├─sda1 vfat EFI 2860-11F4
├─sda2 hfsplus Macintosh HD 6c563b0e-e711-3a7a-8ac8-3baedccb3282
├─sda3 ext3 f25d1301-fc5c-4f42-862b-c0097261522c /
├─sda4 ntfs WinXP 36202C2F202BF511
└─sda5
sr0
答案1
似乎你的交换分区格式错误或没有格式化。（或者以某种方式损坏）
将 sda5 重新格式化为 SWAP（使用 GParted、parted 或 fdisk）并确保 fstab 中的 UUID 与 中的匹配sudo blkid。
sudo swapon /dev/sda5如果您不想重新启动，请运行以启用到该分区的交换。