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https://www.linuxquestions.org/questions/linux-newbie-8/ext3-trim-support-922398/
Jan 07, 2012 · Latest version of linux kernel has trim support however does it apply to ext4 or can ext3 have trim too? Basically, if it depends on the kernel version and you upgrade the distro to latest kernel version (debian squeeze etc), will it have support for ext3 trim?
http://blog.neutrino.es/2013/howto-properly-activate-trim-for-your-ssd-on-linux-fstrim-lvm-and-dmcrypt/
How to active TRIM on Linux? The first thing to know is that TRIM should be enabled on all I/O abstraction layers. This means that if you have an ext4 partition on top of LVM, which in turn is on top of an encrypted volume with LUKS/dm-crypt, then you must enable support for TRIM in these three layers: The filesystem, LVM and dm-crypt.
https://techjourney.net/access-read-write-linux-ext2-ext3-ext4-hfs-reiserfs-filesystem-partitions-in-windows/
Has trim support for solid state drives (SSD) on Windows 7/Server 2008 R2 or higher. UTF-8 encoding. Large inodes. Supports block sizes up to 64KB. Files larger than 2 GBytes. Supports hash indexed (htree) directories (utilizes the so-called dir_index feature of Ext3).
https://discussions.citrix.com/topic/336790-xenserver-62-install-onto-ssd-trim-support-with-ext4-for-dom0/
Jul 04, 2014 · I'm trying to install XenServer 6.2 onto a Dell 2950 where I've got an Intel 320 40GB SSD set to be the boot disk. My issue is that even under "Advanced" mode, there is no interaction I have access to to specify a ext4 filesystem for dom0 (it installs as ext3) so that I can add "discard" into fstab and get TRIM support for my boot SSD.
https://thelinuxcode.com/mount-linux-partition-ext4-ext3-ext2-windows-10-8-7/
Enable force writing support on Ext3 partitions; ... Linux and Windows, i need to know how to trim it on Linux. Seems like NTFS is much better supported on Linux than Ext4 is on Windows… and i also want to write from Windows. Lucky me i did not lost all, lucky for that multiple copies of the superblock, etc. ...
https://en.wikipedia.org/wiki/TRIM_(SSD_command)
Ext3, NILFS2 and OCFS2 offer ioctls to perform offline trimming. The TRIM specification calls for supporting a list of trim ranges, but as of kernel 3.0 trim is only invoked with a single range that is slower. ... Where the filesystem does not automatically support TRIM, some utilities can send trimming commands manually. ...
http://www.fs-driver.org/faq.html
Ext3 is backward-compatible to Ext2 - an Ext3 volume can be mounted and used as an Ext2 volume. Just as older Linux Kernels which do not know the Ext3 file system can mount Ext3 volumes (as Ext2 volumes), the Ext2 file system driver ext2fs.sys for Windows incorporated in this software package can do it without any problems, too.
https://docs.microsoft.com/en-us/azure/virtual-machines/linux/configure-lvm
TRIM/UNMAP support. Some Linux kernels support TRIM/UNMAP operations to discard unused blocks on the disk. These operations are primarily useful in standard storage to inform Azure that deleted pages are no longer valid and can be discarded. Discarding pages can save cost if you create large files and then delete them.
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