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Description of problem:
In RHEL7, the maximum size for an XFS filesystem is supposed to be larger than in RHEL6 - either 500 TB or 1 PB compared to the previous value of 100 TB. This doesn't seem to be the case.

blivet/formats/fs.py contains the following:

class XFS(FS):
<lines omitted>
_maxSize = 100 * 1024 * 1024

which suggests that the size limit is still at 100 TB as of now.

Version-Release number of selected component (if applicable):
python-blivet-0.18.4-1.el7

Actual results:
Can't create an XFS filesystem above 100T.

Expected results:
Can create an XFS filesystem up to at least 500T, if not 1000T.

Sounds like it should be 1000T to allow for really large setups.

After talking to sandeen about this it is probably best to set it to 16EB. None of the other xfs tools enforce an upper limit so we'll set it really big and change it when someone complains :)

Verified on python-blivet-0.18.19-2.el7 
blivet/formats/fs.py contains the following:
class XFS(FS):
<lines omitted>
    _maxSize = 16 * 1024 * 1024 * 1024 * 1024

This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.