ディスクのクローン作成とパーティションのサイズ変更後の起動時間が遅い

Question

最近、SSDをより大きなSSDに交換しました。 Clonezilla を使用して、古いディスクを新しいディスクに複製しました。その後、私は GParted Live を使用して既存のパーティションのサイズを変更し、スワップパーティションをディスクの最後にプッシュしました。 Ubuntu 16.04から18.04にもアップデートしました。

上記の手順を正常に完了した後、起動時間がはるかに長くなったことに気づきました。私はいくつかの同様のスレッド（以下にリンクされています）を見つけ、そこで提案されているものを試しました。ただし、起動時間は、ディスク交換前の時間には短縮されませんでした。

これが私のオリジナル/etc/fstabです。

# /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/sda1 during installation UUID=e15b2ef7-c32d-46f5-a3a8-4bdc60285b4e / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=3a0c2581-52f2-4c92-9c4a-09d3f0258c05 none swap sw 0 0 /dev/disk/by-id/usb-Generic_USB_Flash_Disk-0:0 /mnt/usb-Generic_USB_Flash_Disk-0:0 auto nosuid,nodev,nofail,x-gvfs-show 0 0

blkidコマンドの出力を調べて、UUIDパーティションのswapをすでに置き換えました。

/dev/sda1: UUID="e15b2ef7-c32d-46f5-a3a8-4bdc60285b4e" TYPE="ext4" PARTUUID="000d7e8b-01" /dev/sda5: LABEL="swap" UUID="839f9d78-77b2-491d-808d-8cd551a9eeef" TYPE="swap" PARTUUID="000d7e8b-05"

/dev/disk/by-id/usb-..もコメントアウトしました。これは、これがGParted Liveを起動したUSBスティックであると考えているためです。なぜそれがまだそこに定義されているのか分かりません。

# /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/sda1 during installation UUID=e15b2ef7-c32d-46f5-a3a8-4bdc60285b4e / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation # UUID=3a0c2581-52f2-4c92-9c4a-09d3f0258c05 none swap sw 0 0 UUID=839f9d78-77b2-491d-808d-8cd551a9eeef none swap sw 0 0 # /dev/disk/by-id/usb-Generic_USB_Flash_Disk-0:0 /mnt/usb-Generic_USB_Flash_Disk-0:0 auto nosuid,nodev,nofail,x-gvfs-show 0 0

/var/log/boot.logは以下を示します。

 Starting Tell Plymouth To Write Out Runtime Data... [ OK ] Started Braille Device Support. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. Starting Load/Save RF Kill Switch Status... [ OK ] Started Braille Device Support. [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Reached target Sound Card. [ OK ] Started Braille Device Support. [ OK ] Started Tell Plymouth To Write Out Runtime Data. [ OK ] Started Raise network interfaces. [ TIME ] Timed out waiting for device dev-disk-by\x2did-usb\x2dGeneric_USB_Flash_Disk\x2d0:0.device. [DEPEND] Dependency failed for /mnt/usb-Generic_USB_Flash_Disk-0:0. [ TIME ] Timed out waiting for device dev-disk-by\x2duuid-3a0c2581\x2d52f2\x2d4c92\x2d9c4a\x2d09d3f0258c05.device. [DEPEND] Dependency failed for /dev/disk/by-uuid/3a0c2581-52f2-4c92-9c4a-09d3f0258c05. [DEPEND] Dependency failed for Swap. [ OK ] Reached target System Initialization. [ OK ] Listening on UUID daemon activation socket. [ OK ] Listening on PC/SC Smart Card Daemon Activation Socket. [ OK ] Started Daily apt download activities. ...

systemd-analyzeコマンドは次のことを伝えます。

Startup finished in 36.037s (kernel) + 10.847s (userspace) = 46.885s graphical.target reached after 10.835s in userspace

起動時間を改善するにはどうすればよいですか？

更新

今日再び/var/log/boot.logを調べたところ、この出力が見つかりました-デバイスを検索するときにtime-outに注意してください！：

 Starting Tell Plymouth To Write Out Runtime Data... [ OK ] Started Braille Device Support. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. Starting Load/Save RF Kill Switch Status... [ OK ] Started Braille Device Support. [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Reached target Sound Card. [ OK ] Started Braille Device Support. [ OK ] Started Tell Plymouth To Write Out Runtime Data. [ OK ] Started Raise network interfaces. [* ] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ [** ] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ [*** ] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ [ *** ] (2 of 2) A start job is running for dev-disk-by\x2duuid-3a0c2581\x2d5 [ *** ] (2 of 2) A start job is running for dev-disk-by\x2duuid-3a0c2581\x2d5 [ ***] (2 of 2) A start job is running for dev-disk-by\x2duuid-3a0c2581\x2d5 [ **] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ [ *] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ [ **] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ [ ***] (2 of 2) A start job is running for dev-disk-by\x2duuid-3a0c2581\x2d5 [ *** ] (2 of 2) A start job is running for dev-disk-by\x2duuid-3a0c2581\x2d5 [ *** ] (2 of 2) A start job is running for dev-disk-by\x2duuid-3a0c2581\x2d5 [*** ] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ [** ] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ [* ] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ [** ] (2 of 2) A start job is running for dev-disk-by\x2duuid-3a0c2581\x2d5 [*** ] (2 of 2) A start job is running for dev-disk-by\x2duuid-3a0c2581\x2d5 [ *** ] (2 of 2) A start job is running for dev-disk-by\x2duuid-3a0c2581\x2d5 [ *** ] (1 of 2) A start job is running for dev-disk-by\x2did-usb\x2dGeneric_ ... [ TIME ] Timed out waiting for device dev-disk-by\x2did-usb\x2dGeneric_USB_Flash_Disk\x2d0:0.device. [DEPEND] Dependency failed for /mnt/usb-Generic_USB_Flash_Disk-0:0. [ TIME ] Timed out waiting for device dev-disk-by\x2duuid-3a0c2581\x2d52f2\x2d4c92\x2d9c4a\x2d09d3f0258c05.device. [DEPEND] Dependency failed for /dev/disk/by-uuid/3a0c2581-52f2-4c92-9c4a-09d3f0258c05. [DEPEND] Dependency failed for Swap. [ OK ] Reached target System Initialization. [ OK ] Listening on UUID daemon activation socket. [ OK ] Listening on PC/SC Smart Card Daemon Activation Socket. ...

ディスクのクローン作成とパーティションのサイズ変更後の起動時間が遅い

更新

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