WhichofthefollowingstatementsareFALSEconcerningthedefragfscommand?()
A.Thedefragfscommandshouldnotberunagainstfilesystemsandlogicalvolumesthatcontainmostlytransitoryinformation，suchas/tmp.
B.ThedefragfscommandshouldnotberunonalargeJFS2filesystemwhenrunningona32-bitkernel.
C.Thedefragfscommandcanimprovefilesystemperformancebyincreasingthefilesystem’scontiguousfreespace.
D.Thedefragfscommandcanonlyberunagainstfilesystemsthataremountedwithread-writepermissions.
正确答案：参考B
词条内容仅供参考，如果您需要解决具体问题
（尤其在法律、医学等领域），建议您咨询相关领域专业人士。