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.\" Copyright 2006-2020. Quantum Corporation. All Rights Reserved.
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.TH SNDISKMOVE 8 "May 2020" "Xsan File System"
.SH NAME
sndiskmove \- Xsan File System Disk Mover Utility
.SH SYNOPSIS
.na
.nh
.HP
.B sndiskmove 
.RB [ -fqv ]
.RB [ -s \ \fIsuffix\fP]
.RB [ -b \ \fIbufMB\fP]
.RB [ -S \ \fIfile\fP]
.I SourceVolume\ DestinationVolume
.ad
.hy
.SH DESCRIPTION
\fBsndiskmove\fR is a utility for migrating the contents of a disk to
a new disk.  This is accomplished by copying the data from the disk
and relabeling the destination disk with the name of the
source disk.  The source disk is also relabeled with its original
name with a suffix added (this is ".old" by default but this can be
changed with the \fB-s\fR option.
.PP
\fBWARNING:\fR Using this command incorrectly can cause loss of data.
Please ensure that you understand the procedures to safely execute this
command completely.  Also, this command is not supported for filesystem
disks that contain data, it must be used for Exclusive Metadata or
Journal disks only.
.PP
Attempting to run this command on a disk that is being used on an
actively running filesystem will cause data corruption.
All referencing filesystems must be stopped
and remain stopped during the processing of this command.
.PP
If successful, the command will cause the local \fBfsmpm\fR process
to rescan the disks on the host where the command is executed.
If there are any \fBFSMs\fR configured on other hosts, it is critical
to request a rescan of the disks before reenabling
the \fBFSM\fR on those servers by invoking
.br
.Cs
\fBcvadmin -e 'disks refresh'\fR
.Ce
.PP
on those hosts.
.SH OPTIONS
.IP \fB-f\fR
Forces the disk data to be moved without confirmation from the user.
\fBWARNING: Use this flag with extreme caution!\fR
.IP \fB-q\fR
Run in quiet mode.  This disables the progress display.
.IP \fB-v\fR
Causes \fBsndiskmove\fR to be verbose.
.IP "\fB-s\fP \fIsuffix\fP"
Uses the supplied \fIsuffix\fR to relabel the source disk.
.IP "\fB-b\fP \fIbufsizeMB\fP"
Specifies the buffer size to use for the copying of disk data (in megabytes).
The default value is 4MB.
.IP "\fB-S\fP \fIfile\fP"
Writes status monitoring information in the supplied file.
This is used internally by Xsan and the format
of this file may change.
.SH NOTES
The source and destination disks must contain EFI labels. VTOC labels are
not supported. Also, the sector sizes used by the source and destination
disks must be the same.
.SH "SEE ALSO"
.BR cvadmin (8),
.BR cvlabel (8)