Re: [PATCH v2] dracut-moduel-setup: Filte the bind mounted directory in the Atomic
On 02/03/15 at 02:35pm, Minfei Huang wrote:
The crash dump is saved in the /sysroot/crash directory, not the
/sysroot/var/crash in the atomic system.
On Atomic "findmnt /var" returns following.
bash-4.2# findmnt -k -n -r -o SOURCE /var
/dev/mapper/atomicos-root[/ostree/deploy/rhel-atomic-host/var]
Looks like first part is device and path inside brackets [] is path
which is source of bind mount.
So we can determine the bind mounted directory, if the "findmnt /var"
returns contains the brackets [].
Well, patch looks good. While it's not easy to understand from log and
code change.
Signed-off-by: Minfei Huang <mhuang(a)redhat.com>
---
kdump-lib.sh | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/kdump-lib.sh b/kdump-lib.sh
index a20c6e8..abd5467 100755
--- a/kdump-lib.sh
+++ b/kdump-lib.sh
@@ -86,9 +86,20 @@ get_root_fs_device()
return
}
+# We are looking to see if a part of dump path is mounted on some disk.
+# But we don't want to look for bind mounted directories. By default
+# df $path will show entries even if some part of path is bind mounted.
+# Also run findmnt to figure out if part of the $path is actuallly bind
+# mounted or real mount on some device.
get_mntpoint_from_path()
{
- echo $(df $1 | tail -1 | awk '{print $NF}')
+ local _mnt=$(df $1 | tail -1 | awk '{print $NF}')
+ _mnt=$(findmnt -k -n -r -o SOURCE $_mnt)
+ if `echo $_mnt | grep -q "\[.*\]"`; then
+ echo "/"
+ else
+ echo $_mnt
+ fi
}
get_target_from_path()
--
1.9.3
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