ext4
[ 4.524072@3] initrd: mounting /dev/disk/by-label/system-a
[ 4.527232@1] force enable DISCARD here for ext4 fs
[ 4.528837@1] EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to feature incompatibilities
[ 4.538003@2] force enable DISCARD here for ext4 fs
[ 4.542199@2] EXT4-fs (mmcblk0p2): couldn't mount as ext2 due to feature incompatibilities
[ 4.551115@3] force enable DISCARD here for ext4 fs
[ 4.561231@3] checked enable EXT4 DISCARD here
[ 4.561273@3] EXT4-fs (mmcblk0p2): mounting with "discard" option, but the device does not support discard
[ 4.569704@3] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 4.580911@1] initrd: mounting /run
[ 4.607969@1] initrd: checking filesystem for writable partition
[ 4.614573@1] force enable DISCARD here for ext4 fs
[ 4.614615@1] EXT4-fs (mmcblk0p4): couldn't mount as ext3 due to feature incompatibilities
[ 4.622938@2] force enable DISCARD here for ext4 fs
[ 4.626934@2] EXT4-fs (mmcblk0p4): couldn't mount as ext2 due to feature incompatibilities
[ 4.636090@3] force enable DISCARD here for ext4 fs
[ 4.643766@3] checked enable EXT4 DISCARD here
[ 4.644473@3] EXT4-fs (mmcblk0p4): mounting with "discard" option, but the device does not support discard
[ 4.654128@3] EXT4-fs (mmcblk0p4): mounted filesystem with ordered data mode. Opts: errors=remount-ro
[ 4.685296@2] initrd: mounting writable partition
[ 4.706122@1] force enable DISCARD here for ext4 fs
[ 4.706172@1] EXT4-fs (mmcblk0p4): couldn't mount as ext3 due to feature incompatibilities
[ 4.714257@2] force enable DISCARD here for ext4 fs
[ 4.718490@2] EXT4-fs (mmcblk0p4): couldn't mount as ext2 due to feature incompatibilities
[ 4.727216@3] force enable DISCARD here for ext4 fs
[ 4.737472@3] checked enable EXT4 DISCARD here
[ 4.737505@3] EXT4-fs (mmcblk0p4): mounting with "discard" option, but the device does not support discard
[ 4.745990@3] EXT4-fs (mmcblk0p4): mounted filesystem with ordered data mode. Opts: discard