[Bug 107301] system hang during ext4 xattr operation

bugzilla-daemon
2015-11-09T15:22:28Z

--- Comment #11 from Jan Kara <jack@suse.cz> ---
Actually if most of inodes have xattrs like this, then the biggest win would
probably be to create filesystem with 512-byte inodes where the ~270-byte xattr
will fit into the inode as well. Then you save on extra block lookup etc.

WRT disabling mbcache, it seems disabling it would really help your usecase.
However I'm not a big fan of mount options for disabling/enabling various
functionality in the filesystem as it blows up a test matrix and tends to be a
usability issue as well (people don't know the option or don't know when to
enable / disable it). So I'd prefer if we just fixed mbcache...