mirror of https://github.com/vitalif/e2fsprogs
![]() 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> |
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blkid | ||
e2p | ||
et | ||
ext2fs | ||
ss | ||
uuid | ||
ChangeLog | ||
Makefile.bsd-lib | ||
Makefile.checker | ||
Makefile.darwin-lib | ||
Makefile.elf-lib | ||
Makefile.library | ||
Makefile.profile | ||
Makefile.solaris-lib | ||
fpopen.c |