diff options
| author | Karel Zak <kzak@redhat.com> | 2006-03-08 14:17:28 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2006-03-08 14:17:28 -0500 |
| commit | 4db2f59a718c18202a7ce1d559be18bfa1087747 (patch) | |
| tree | 406b54316ab495dfec054b38db6cdf45f87cb876 /MCONFIG.in | |
| parent | d2955d2216889467c1694af3b6691da10712508f (diff) | |
| download | e2fsprogs-4db2f59a718c18202a7ce1d559be18bfa1087747.tar.gz | |
Add device-mapper support to the blkid library
On systems where is multi-path storage device is problem with duplicated
filesystems. The solution is select "the best" device. This is possible
by device-mapper library.
Short quotation from RH bugzilla:
With my patch, all dm devices remains in libblkid cache.
Only the top level dm devices are given high priority
and more appropriate node names (i.e. /dev/mapper/*) are used.
For example, if we have linear mapped dm device "ov1" over
dm device "disk1p3" which is multipath mapped to /dev/sdd3 and /dev/sdh3:
# dmsetup.static ls --tree
ov1 (253:5) <-- /dev/mapper/ov1 or /dev/dm-5
`-disk1p3 (253:4) <-- /dev/mapper/disk1p3 or /dev/dm-4
`-disk1 (253:0)
|- (8:112) <-- /dev/sdh
`- (8:48) <-- /dev/sdd
Original version of blkid will show:
# ./orig/blkid -t LABEL=mpdisk1p3 -l
/dev/sdd3: LABEL="mpdisk1p3" ... TYPE="ext3"
With my patch, blkid will show:
# ./deptree/blkid -t LABEL=mpdisk1p3 -l
/dev/mapper/ov1: LABEL="mpdisk1p3" ... TYPE="ext3"
In blkid cache, all devices are listed:
# ./orig/blkid -t LABEL=mpdisk1p3
/dev/sdd3: LABEL="mpdisk1p3" ... TYPE="ext3"
/dev/sdh3: LABEL="mpdisk1p3" ... TYPE="ext3"
/dev/dm-4: LABEL="mpdisk1p3" ... TYPE="ext3"
/dev/dm-5: LABEL="mpdisk1p3" ... TYPE="ext3"
# ./deptree/blkid -t LABEL=mpdisk1p3
/dev/mapper/ov1: LABEL="mpdisk1p3" ... TYPE="ext3"
/dev/sdd3: LABEL="mpdisk1p3" ... TYPE="ext3"
/dev/sdh3: LABEL="mpdisk1p3" ... TYPE="ext3"
/dev/dm-4: LABEL="mpdisk1p3" ... TYPE="ext3"
For more details see discussion on:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=156324
Addresses Red Hat Bug: #156324
Signed-off-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'MCONFIG.in')
| -rw-r--r-- | MCONFIG.in | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -66,13 +66,16 @@ MKINSTALLDIRS = @MKINSTALLDIRS@ # # Library definitions # +DEVMAPPER_LIBS = @DEVMAPPER_LIBS@ +STATIC_DEVMAPPER_LIBS = @STATIC_DEVMAPPER_LIBS@ + LIB = $(top_builddir)/lib LIBSS = $(LIB)/libss@LIB_EXT@ LIBCOM_ERR = $(LIB)/libcom_err@LIB_EXT@ LIBE2P = $(LIB)/libe2p@LIB_EXT@ LIBEXT2FS = $(LIB)/libext2fs@LIB_EXT@ LIBUUID = $(LIB)/libuuid@LIB_EXT@ @SOCKET_LIB@ -LIBBLKID = $(LIB)/libblkid@LIB_EXT@ +LIBBLKID = $(LIB)/libblkid@LIB_EXT@ $(DEVMAPPER_LIBS) LIBINTL = @LIBINTL@ DEPLIBUUID = $(LIB)/libuuid@LIB_EXT@ @@ -81,7 +84,7 @@ STATIC_LIBCOM_ERR = $(LIB)/libcom_err@STATIC_LIB_EXT@ STATIC_LIBE2P = $(LIB)/libe2p@STATIC_LIB_EXT@ STATIC_LIBEXT2FS = $(LIB)/libext2fs@STATIC_LIB_EXT@ STATIC_LIBUUID = $(LIB)/libuuid@STATIC_LIB_EXT@ @SOCKET_LIB@ -STATIC_LIBBLKID = $(LIB)/libblkid@STATIC_LIB_EXT@ +STATIC_LIBBLKID = $(LIB)/libblkid@STATIC_LIB_EXT@ $(STATIC_DEVMAPPER_LIBS) DEPSTATIC_LIBUUID = $(LIB)/libuuid@STATIC_LIB_EXT@ PROFILED_LIBSS = $(LIB)/libss@PROFILED_LIB_EXT@ |