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32 .\" @(#)swapon.8 8.1 (Berkeley) 6/5/93
40 .Nd "specify additional device for paging and swapping"
48 is used to specify additional devices on which paging and swapping
50 The system begins by swapping and paging on only a single device
51 so that only one disk is required at bootstrap time.
54 normally occur in the system multi-user initialization file
56 making all swap devices available, so that the paging and swapping
57 activity is interleaved across several devices.
59 Normally, the first form is used:
60 .Bl -tag -width indent
62 All devices marked as ``sw''
65 are made available unless their ``noauto'' option is also set.
68 The second form gives individual block devices as given
69 in the system swap configuration table. The call makes only this space
70 available to the system for swap allocation.
79 .Bl -tag -width "/dev/{ad,da}?s?b" -compact
80 .It Pa /dev/{ad,da}?s?b
81 standard paging devices
85 ASCII filesystem description table
88 There is no way to stop paging and swapping on a device.
89 It is therefore not possible to dismount swap devices which are
90 mounted during system operation.