52 lines
847 B
Plaintext
52 lines
847 B
Plaintext
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.TH SDLOOP 3
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.SH NAME
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sdloop \- loopback storage device interface
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.SH SYNOPSIS
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.nf
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.B bind -a #S /dev
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.BI "echo config switch on spec " l " type loop/\fIpath\fP[!\fIsectsize\fP] >/dev/sdctl"
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.BI /dev/sd l 0/ctl
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.BI /dev/sd l 0/raw
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.BI /dev/sd l 0/data
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\&...
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.fi
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.SH DESCRIPTION
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.I Sdloop
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allows a file to be used as a sd device.
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To configure
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.B /tmp/data
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as
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.BR sdl0 :
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with a 1024-byte sector size
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.IP
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.EX
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echo config switch on spec l type loop//tmp/data!1024 >/dev/sdctl
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.EE
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.PP
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To turn this device off,
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.IP
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.EX
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echo config switch off spec l >/dev/sdctl
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.EE
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.PP
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The configuration variable
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.B loopdev
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may be specified in
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.IR plan9.ini (8)
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to configure a loopback
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.I sd
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device at boot. For example
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.IP
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.EX
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loopdev=l!/tmp/data!1024
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.EE
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.SH SOURCE
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.B /sys/src/9/port/sdloop.c
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.SH SEE ALSO
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.IR sd (3),
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.IR sdaoe (3),
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.IR partfs (8)
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.SH BUGS
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Maybe.
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