I have slow boot. From systemd-analyze blame, i can see that dev.sda1(which holds root file system) is taking a lot of time(around 9 seconds) Now,I have 4 ext4 partitions in my system.
From dmesg :
1. EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)--> Here root file system is mounted in read only mode for fsck 2. EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro --> Here root file system is remounted in read-write mode 3. EXT4-fs (sda7): mounted filesystem with ordered data mode. Opts: (null) --> Here sda7 is mounted on /home 4. EXT4-fs (sda5): mounted filesystem with ordered data mode. Opts: (null) --> Here sd5 is mounted on /mnt/data
My /etc/fstab look like this:
# # / was on /dev/sda1 during installation UUID=e27bebbb-f8e8-4bd7-9849-2421323efc3a / ext4 errors=remount-ro 0 1 # /home was on /dev/sda7 during installation UUID=0622bb8c-dd7d-4035-8c92-b0f729a60035 /home ext4 defaults 0 2 # swap was on /dev/sda6 during installation UUID=dc788cde-d82a-4bdc-a5b1-8def34546012 none swap sw 0 0 # /dev/sda5 was mounted on /mnt/data post installation UUID=144ba46c-e53d-4e0f-9da2-5a3d31bb617a /mnt/data ext4 defaults 0 2
My question is why remounting root file system in read write mode takes so much time(around 9 sec).