tom*_*mek 6 upgrade boot swap cryptsetup 16.04
将 Ubuntu 从 14.04 升级到 16.04 后，启动开始变得非常缓慢。似乎是交换分区的问题。下面我附上一些细节。
cat /var/log/boot.log
[FAILED] Failed to activate swap /dev/mapper/ubuntu--vg-swap_1.
See 'systemctl status "dev-mapper-ubunt...\x2dvg\\x2dswap_1.swap"' for details.
[DEPEND] Dependency failed for Swap.
...
[ TIME ] Timed out waiting for device dev-di...\x2db1dc\x2dae7fb1c172e6.device.
[DEPEND] Dependency failed for Cryptography Setup for cryptswap1.
[DEPEND] Dependency failed for dev-mapper-cryptswap1.device.
[DEPEND] Dependency failed for /dev/mapper/cryptswap1.
[DEPEND] Dependency failed for Encrypted Volumes.
猫 /etc/fstab
/dev/mapper/ubuntu--vg-root / ext4 errors=remount-ro 0 1
# /boot was on /dev/sda1 during installation
UUID=d57910fd-a1ae-4721-8da0-af0677f5a869 /boot ext2 defaults 0 2
/dev/mapper/ubuntu--vg-swap_1 none swap sw 0 0
/dev/mapper/cryptswap1 none swap sw 0 0
猫 /etc/ctypttab
sda5_crypt UUID=cc64c6e4-f704-4f8e-8801-c9fe847b99c1 none luks,discard
cryptswap1 UUID=7ad77809-b29c-4434-b1dc-ae7fb1c172e6 /dev/urandom swap,cipher=aes-cbc-essiv:sha256
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 238,5G 0 disk
??sda1 8:1 0 243M 0 part /boot
??sda2 8:2 0 1K 0 part
??sda5 8:5 0 238,2G 0 part
??sda5_crypt 252:0 0 238,2G 0 crypt
??ubuntu--vg-root 252:1 0 206,6G 0 lvm /
??ubuntu--vg-swap_1 252:2 0 31,7G 0 lvm
sr0 11:0 1 1024M 0 rom
猫/过程/交换
Filename Type Size Used Priority
l /开发/映射器/
crw------- 1 root root 10, 236 sie 23 14:29 control
lrwxrwxrwx 1 root root 7 sie 23 14:29 sda5_crypt -> ../dm-0
lrwxrwxrwx 1 root root 7 sie 23 14:29 ubuntu--vg-root -> ../dm-1
lrwxrwxrwx 1 root root 7 sie 23 14:29 ubuntu--vg-swap_1 -> ../dm-2
小智 0
您需要从CD或USB启动Ubuntu，然后选择“尝试ubuntu”选项，运行GParted。
如果需要，删除旧的交换分区并创建新的交换分区。
/etc/fstab 应该有类似于此的行
UUID=some-unique-id-for-the-partition swap swap defaults 0 0
获取blkid在终端中运行的唯一 ID