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.\" Copyright 2012-2017. Quantum Corporation. All Rights Reserved.
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.\" Quantum Corporation in the US and/or other countries.
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.TH sn_scsi_resize 1 "March 2017" "StorNext File System"
.SH NAME
sn_scsi_resize \- Utility to resize a virtual volume
.SH SYNOPSIS
.na
.nh
.HP
.B sn_scsi_resize
.RI [ options ]
.I [devname1 devname3 devname3...]
.ad
.hy
.SH DESCRIPTION
\fBsn_scsi_resize\fR is a utility that can be used to tell the
disk driver infrastructure in the Linux operating system
to get the size of a volume.
The size of a volume may have increased, particularly in the case
of a thin provisioned volume.  The Linux device driver stack does
not automatically detect size changes.

If no devnames are specified, \fBsn_scsi_resize\fR will rescan all
multipath devices and their slaves.

Devnames may be specified as absolute paths like /sys/block/dm-3, /sys/block/dm*,
/sys/block/sdg, or shorthand like mpatha, mpathb representing /dev/mapper files.

\fBsn_scsi_resize\fR will execute a StorNext disk refresh after the SCSI devices have been resized.

.SH OPTIONS
.IP \fB-?\fR
Display usage and exit.
.IP \fB-h\fR
Help. Display usage and exit.
.IP \fB-l\fR
List.  This option will list the device sizes.  No size rescan is done.
.IP \fB-v\fR
Verbose.  Display the sizes of the devices.  Similar to the list option
but works during resize.
.SH "EXAMPLES"
.PP
Rescan all multipath devices and their slaves:
.Cs
    sn_scsi_resize

.Ce
Rescan the multipath device dm-3 and its slaves:
.Cs
    sn_scsi_resize /sys/block/dm-3

.Ce
Rescan the multipath device /dev/mapper/mpatha and /dev/mapper/mpathb  and their slaves:
.Cs
    sn_scsi_resize mpatha mpathb
.Ce

List the sizes of all device and their slaves:
.Cs
    sn_scsi_resize -l
.Ce

.Cs
.SH "NOTES"
.PP
\fBsn_scsi_resize\fR is currently supported only on Linux.
.PP
Devices representing partitions cannot be resized.  Error messages
are suppressed unless the -v option is specified.
.PP
.SH FILES
.I /System/Library/Filesystems/acfs.fs/Contents/bin/sn_scsi_resize