ext4mountdiscardoption

Themountoptionsro,noloadcanbeusedtopreventwritestothefilesystem.journal_checksumEnablechecksummingofthejournaltransactions.Thiswillallow ...,Theblockdiscardoperationcommunicatestotheunderlyingstoragewhichfilesystemblocksarenolongerinusebythemountedfilesystem.Blockdiscard ...,2017年5月24日—...DISCARDMOUNTOPTIONonSSD's(-onodiscard)underLinux.Here'sthe...ext4–thedefaultextendedoptionisnottodiscar...

參考資訊如下
ro Mount filesystem read only. Note that ext4 will

The mount options ro,noload can be used to prevent writes to the filesystem. journal_checksum Enable checksumming of the journal transactions. This will allow ...

Chapter 23. Discarding unused blocks

The block discard operation communicates to the underlying storage which filesystem blocks are no longer in use by the mounted filesystem. Block discard ...

When and where to use rw,nofail,noatime,discard,defaults?

2017年5月24日 — ... DISCARD MOUNT OPTION on SSD's (-o nodiscard) under Linux. Here's the ... ext4 – the default extended option is not to discard blocks at ...

Is "discard=async" a supported fstab mount option for Ext4 ...

2023年5月25日 — As far as I can tell, discard=async is btrfs-specific and fairly new. It was initially introduced in 2019, and became the default in Linux 6.2.

Mounting with discard option

2015年1月20日 — Ext4 partition seems to be coming up with below discard option ? Any clues ? Code: Select all 8.184601@3] EXT4-fs (sda2): mounting with discard ...

fstrim vs. mount -o discard

2016年12月21日 — I've noticed from time-to-time that running fstrim on mounted ext4 filesystems yields massive amounts of trimmed space even when these ...

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 ...

[SOLVED] whether should I turn on “discard” option for ext4 ...

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 ...

Enable DiscardTrim for your 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 ...

linux discard mount option

linux discard mount option ... Linux 的discard 挂载选项是一种与Solid State Drive (SSD) 和NVMe 等闪存设备一起使用的功能。该选项的作用是当删除文件或修改文件时，立即 ...