From 662ed0a13f4b497352fe9b6a1d243f06e45c4f3d Mon Sep 17 00:00:00 2001

From: Harald Hoyer <harald@redhat.com>

Date: Thu, 22 Sep 2011 15:12:14 +0200

Subject: [PATCH] 99fs-lib/fs-lib.sh: fsck btrfs via mounting like xfs

btrfsck is only for manual repairing your filesystem

---

 modules.d/99fs-lib/fs-lib.sh |   33 ++++++++++++++++++++++++++++++++-

 1 files changed, 32 insertions(+), 1 deletions(-)

diff --git a/modules.d/99fs-lib/fs-lib.sh b/modules.d/99fs-lib/fs-lib.sh

index f7b20dd..edb5852 100755

--- a/modules.d/99fs-lib/fs-lib.sh

+++ b/modules.d/99fs-lib/fs-lib.sh

@@ -59,7 +59,7 @@ fsck_able() {

             ;;

         btrfs)

             type btrfsck >/dev/null 2>&1 &&

-            _drv="_drv=btrfsck fsck_drv_com" &&

+            _drv="_drv=none fsck_drv_btrfs" &&

             return 0

             ;;

         *)

@@ -104,6 +104,37 @@ fsck_drv_xfs() {

     return $_ret

 }

+fsck_drv_btrfs() {

+    local _ret

+

+    # fs must be cleanly mounted (and umounted) first, before attempting any

+    # btrfs tools - if this works, nothing else should be needed

+    # note, that user is always dropped into the shell, if the filesystem is

+    # not mountable or if -f flag is found among _fop

+    mkdir -p /tmp/.btrfs

+

+    info "trying to mount $_dev"

+    if mount -t btrfs "$_dev" "/tmp/.btrfs" >/dev/null 2>&1; then

+        _ret=0

+        info "btrfs: $_dev is clean"

+        umount "$_dev" >/dev/null 2>&1

+    else

+        _ret=4

+        warn "*** $_dev is unmountable"

+    fi

+    if [ $_ret -gt 0 ] || strstr "$_fop" "-f"; then

+        warn "*** Dropping you to a shell. You have"

+        warn "*** btrfsck available."

+        warn "*** Note that if btrfs didn't mount properly, it's"

+        warn "*** probably pretty serious condition."

+        emergency_shell -n "(Repair filesystem)"

+    fi

+

+    rm -r /tmp/.btrfs

+    return $_ret

+}

+

+

 # common code for checkers that follow usual subset of options and return codes

 fsck_drv_com() {

     local _ret