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It is generally not possible for an application to corrupt a filesystem: normal applications do not directly interact with disks, rather they use kernel-level syscalls for reading and writing. Obviously, applications designed to interact with block devices (ie: fdisk) can corrupt filesystems, but this does not seems your case. Can you provide the output of ...


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You can do this by checking some parameters in the following files: /sys/block//queue/discard_granularity /sys/block//queue/discard_max_bytes if either have a 0 it's probably not supported by your hardware + software configuration. Here's a full tutorial on doing this at: http://www.1337admin.org/uncategorized/compacting-virtual-disks-on-generation-2-linux-...



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