'\" t
.\"     Title: btrfs-check
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: 11/22/2014
.\"    Manual: Btrfs Manual
.\"    Source: Btrfs v3.17
.\"  Language: English
.\"
.TH "BTRFS\-CHECK" "8" "11/22/2014" "Btrfs v3\&.17" "Btrfs Manual"
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.SH "NAME"
btrfs-rescue \- Recover a damaged btrfs filesystem
.SH "SYNOPSIS"
.sp
\fBbtrfs rescue\fR \fI<subcommand>\fR \fI<args>\fR
.SH "DESCRIPTION"
.sp
\fBbtrfs rescue\fR is used to try to recover a damaged btrfs filesystem\&.
.SH "SUBCOMMAND"
.PP
\fBchunk\-recover\fR [options] \fI<device>\fR
.RS 4
Recover the chunk tree by scanning the devices
.sp
\fBOptions\fR
.PP
\-y
.RS 4
assume an answer of
\fIyes\fR
to all questions\&.
.RE
.PP
\-v
.RS 4
verbose mode\&.
.RE
.PP
\-h
.RS 4
help\&.
.RE
.RE
.if n \{\
.sp
.\}
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
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.br
.ps +1
\fBNote\fR
.ps -1
.br
.sp
Since \fBchunk\-recover\fR will scan the whole device, it will be \fBVERY\fR slow especially executed on a large device\&.
.sp .5v
.RE
.PP
\fBsuper\-recover\fR [options] \fI<device>\fR
.RS 4
Recover bad superblocks from good copies\&.
.sp
\fBOptions\fR
.PP
\-y
.RS 4
assume an answer of
\fIyes\fR
to all questions\&.
.RE
.PP
\-v
.RS 4
verbose mode\&.
.RE
.RE
.SH "EXIT STATUS"
.sp
\fBbtrfs rescue\fR returns a zero exit status if it succeeds\&. Non zero is returned in case of failure\&.
.SH "AVAILABILITY"
.sp
\fBbtrfs\fR is part of btrfs\-progs\&. Please refer to the btrfs wiki \m[blue]\fBhttp://btrfs\&.wiki\&.kernel\&.org\fR\m[] for further details\&.
.SH "SEE ALSO"
.sp
\fBmkfs\&.btrfs\fR(8), \fBbtrfs\-scrub\fR(8), \fBbtrfs\-check\fR(8)