Show pagesourceBack to top Share via Share via... Twitter LinkedIn Telegram Yammer RedditRecent ChangesSend via e-MailPrintPermalink × Table of Contents FAQ Which file system should I use? There's an error "out of space" but I still have space! xfs empty space is still recoverable! ext4 init ext4 inodes on mkfs directory index for a huge amount of files NTFS exFAT UDF File Systems FAQ Which file system should I use? If you ask this question, probably the one which is default for your distribution or ext4. Some good file systems and their usage: ext4 root, data btrfs redundant data, file servers zfs redundant data, file servers xfs root, data f2fs flash storage glusterfs computer clusters ntfs shared storage with windows (slow, because fuse) There's an error "out of space" but I still have space! Could be that you ran out of inodes. Check with df -i. xfs get label1 xfs_admin -l /dev/sdb1 change label xfs_admin -L NEWLABEL /dev/mapper/NAME empty space is still recoverable! SSDs do garbage collection differently, which is why dd if=/dev/true or scrub don't work properly. xfs scrub can TRIM the SSD's free space you can use a systemd timer (fstrim.service / fstrim.timer) to TRIM periodically you can enable the discard mount option to TRIM immediately after deleting a file, which slows down deleting files a fair bit. ext4 init ext4 inodes on mkfs lazy inode init makes the drive behave slowly on first mount mkfs.ext4 -E lazy_itable_init=0,lazy_journal_init=0 /dev/sdXY directory index for a huge amount of files Huge amount = >300k mount with dir_index if the error EXT4-fs warning (device /dev/sdx): ext4_dx_add_entry: Directory index full! occurs, you probably have more than 2 million files in one directory, check with $ cd /var/ $ debugfs debugfs> open /dev/sdd1 debugfs> cd log/ debugfs> htree . [...] Number of Entries (count): 508 Number of Entries (limit): 508 [...] and remedy with fsck.ext4 -yfD /dev/sdx1 (source) NTFS For interoperability with Windows; is mounted with FUSE and therefore pretty slow. Use mount options fmask=117,dmask=007 so the executable bit isn't set on everything. exFAT exFAT vs NTFS on Linux UDF Can and should UDF be used as a hard drive format? Format UDF [1] https://blog.khmersite.net/2019/10/how-to-label-xfs-filesystem/ Last modified: 2023-08-26 10:37