DiscardTRIMLinux

Atrimcommandallowsanoperatingsystemtoinformasolid-statedrive(SSD)whichblocksofdataarenolongerconsideredtobeinuseandthereforecan ...,fstrimisusedonamountedfilesystemtodiscard(ortrim)blockswhicharenotinusebythefilesystem.Thisisusefulforsolid-statedrives(SSDs)and ...,Controlswhetherext4shouldissuediscard/TRIM.commandstotheunderlyingblockdevicewhenblocksarefreed.PeriodicTRIM.util-linux中自带了fstr...

參考資訊如下
Trim (computing)

A trim command allows an operating system to inform a solid-state drive (SSD) which blocks of data are no longer considered to be in use and therefore can ...

fstrim

fstrim is used on a mounted filesystem to discard (or trim) blocks which are not in use by the filesystem. This is useful for solid-state drives (SSDs) and ...

Linux 下启用SSD TRIM 功能

Controls whether ext4 should issue discard/TRIM. commands to the underlying block device when blocks are freed. Periodic TRIM. util-linux 中自带了fstrim 工具（ ...

How can I tell if a Linux block device is trimmable or not?

2021年9月9日 — You can check the device's maximum discard sizes, e.g. $ cat /sys/block/X/queue/discard_max_hw_bytes. (replacing X as appropriate).

Using TRIM and DISCARD with SSDs attached to RAID ...

2020年10月28日 — Using TRIM and DISCARD with SSDs attached to RAID controllers · Great Linux resources · Wrapping up · Vincent Cojot · Try Red Hat Enterprise Linux.

SDB:SSD discard (trim) support

Enable DiscardTrim for your SSD

2021年3月24日 — Simply run the sudo fstrim -a command which will trim all unused blocks on all mounted filesystems. It is safe to run the command on a running ...

Is mounting with "discard" needed for TRIM?

2021年5月16日 — I'm on Arch Linux 5.12.3. findmnt tells me this about the partitions and their mount options: TARGET SOURCE FSTYPE OPTIONS / /dev/sda3 ext4 rw ...

Solid state drive

2023年12月11日 — Continuous TRIM is not the most preferred way to issue TRIM commands among the Linux community. ... dm-crypt/Specialties#Discard/TRIM support for ...

Trimdiscard - BTRFS documentation

Trim or discard is an operation on a storage device based on flash technology (SSD, NVMe or similar), a thin-provisioned device or could be emulated on top of ...