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--- linux:notes:ext4 [2025/12/25 19:31] – Sean Rhone
+++ linux:notes:ext4 [2026/05/15 09:28] (current) – [fstab] Sean Rhone
@@ Line 1: / Line 1: @@
-====== AIO ======
+====== Format ======
-===== Spinesnap =====
+  * ''superfloppy'' partitionless ((not MBR/GPT))
-  * ''/dev/nvme0n1p2 on / type ext4''
+  lsblk
-  * ''/dev/nvme0n1p1 on /boot/efi type vfat''
-  * [[linux;distros;opensuse_tumbleweed_gnome|openSUSE Tumbleweed (GNOME)]]
-  sudo e2fsck -D -E 'discard,optimize_extents,inode_count_fullmap,check_encoding,unshare_blocks' -f -v -y '/dev/nvme0n1p2' && sudo mkdir -p '/mnt/nvme0n1p2-m' && sudo mount '/dev/nvme0n1p2' '/mnt/nvme0n1p2-m' && sudo e4defrag -v '/dev/nvme0n1p2' && sync && sudo umount '/dev/nvme0n1p2' && sudo fsck.fat -a -f -t -w -V -v '/dev/nvme0n1p1'
+  sudo umount '/dev/sda'*
-  sudo umount '/dev/nvme0n1p2'
+  sudo wipefs -a -f '/dev/sda' && sudo dd if='/dev/zero' of='/dev/sda' count='18096'
-===== oS TW LiveUSB =====
+  sudo mkfs.ext4 -D -L 'NAS' -O 'fast_commit' -v '/dev/sda'
-****
+  sudo e2fsck -D -E 'optimize_extents,inode_count_fullmap' -f -v -y '/dev/sda'
-  sudo umount '/dev/sda'* || sudo dosfsck -a -w -v '/dev/sda2' && sudo e2fsck -D -E 'discard,optimize_extents,inode_count_fullmap,check_encoding,unshare_blocks' -f -v -y '/dev/sda3' && udisksctl mount --block-device '/dev/sda3' && sudo e4defrag -v '/dev/sda3' && sudo umount '/dev/sda'* && sync
+====== fsck ======
-===== Alira =====
+  * :!: Only on **unmounted** filesystem
-  * ''/dev/sda2 on / type ext4''
+  sudo umount '/dev/sdb'*
-  * [[linux:distros:server:opensuse_tumbleweed_server|openSUSE Tumbleweed (Server)]]
-  sudo e2fsck -D -E 'discard,optimize_extents,inode_count_fullmap,check_encoding,unshare_blocks' -f -v -y '/dev/sda2' && sudo mkdir -p '/mnt/sda2-m' && sudo mount '/dev/sda2' '/mnt/sda2-m' && sudo e4defrag -v '/dev/sda2' && sync && sudo umount '/dev/sda2'
+  sudo e2fsck -D -E 'optimize_extents,inode_count_fullmap' -f -v -y '/dev/sdb'
-  sudo umount '/dev/sda2'
+  sudo mount '/dev/sdb'
-====== Repair ======
+===== LiveUSB =====
-  sudo e2fsck -D -E 'discard,optimize_extents,inode_count_fullmap,check_encoding,unshare_blocks' -f -v -y '/dev/x'
+  sudo e2fsck -D -E 'discard,optimize_extents,inode_count_fullmap' -f -v -y '/dev/nvme0n1p2'
-  lsblk
+  sudo dosfsck -a -t -w -v '/dev/nvme0n1p1'
-  mount | grep 'ext4'
+  sudo e2fsck -D -E 'optimize_extents,inode_count_fullmap' -f -v -y '/dev/sda2'
-===== NAS =====
+====== e4defrag ======
-  * [[servers:linux:vsftpd]]
+****
-  * TODO
-  sudo systemctl stop 'vsftpd'
+  sudo e4defrag -v '/dev/sdb'
-  sudo umount '/dev/sdb'
+===== Temp Mount =====
-  sudo xfs_repair -v '/dev/sdb'
+  * Before ''fstab''
-  sudo mount '/dev/sdb'
+  udisksctl mount --block-device '/dev/sdb'
+====== fstab ======
+  sudo blkid
+  sudo mkdir -p '/mnt/NAS1' && sudo -e '/etc/fstab'
+<code>
+# NAS
+UUID=x /mnt/NAS1 ext4 defaults,noatime,nofail 0 2
+# End</code>
+  sudo systemctl daemon-reload && sudo mount '/mnt/NAS1'
+====== Permissions ======
+  sudo chown -R $USER:$USER '/mnt/NAS1'
-====== Defrag ======
+  sudo chmod -R '0700' '/mnt/NAS1'
-  * TODO: Partitions needs mounted
+====== Safe Unmount External ======
-  sudo e4defrag -v '/dev/nvme0n1p2'
+  sudo umount '/dev/sdb'*
-  sudo e4defrag -v '/'
+  sudo udisksctl unmount --force --block-device='/dev/sdb'
-  sudo e4defrag -v '/dev/sda2'
+  sudo udisksctl power-off --block-device='/dev/sdb'