ext4discardsupport

XFS does discard asynchronously, while ext4 and Btrfs do it synchronously. That means Linux does not have a consistent story to give to the vendors; name and ...

discard Controls whether ext4 should issue discard/TRIM nodiscard(*) commands to the underlying block device when blocks are freed. This is useful for SSD ...

2021年3月24日 — Finally, you need to enable discard for all of your ext4 partitions: simply add the discard option to /etc/fstab . Note that swap on a swap ...

2017年5月24日 — discard/nodiscard Controls whether ext4 should issue discard/TRIM commands to the underlying block device when blocks are freed.This is ...

2015年7月11日 — It will slow down your drive as TRIM is applied constantly. A better option would be to use `fstrim` periodically -- I use it with a systemd ...

2020年11月30日 — As files are deleted the underlying data blocks are discarded. These kernels support realtime discard for ext4 and xfs. To use the kernel ...

You can perform or schedule discard operations on block devices that support them. The block discard operation communicates to the underlying storage which ...

Enabling the timer will activate the service weekly. The service executes fstrim(8) on all mounted filesystems on devices that support the discard operation.

2015年1月20日 — I had been wondering after seeing a few threads mentioning the desire to use the discard option if the eMMC modules even support it.

2023年5月25日 — According to ext4(5), ext4 supports discard, but not the async variant. That's a btrfs feature. Weekly fstrims are good enough though, don't ...