Hi folks....

My RHEL server went sideways last friday... seems that the lv_home disappeared. I managed to get the server to boot to the point where services run again, but the logical volumes on this server are effed up. Running any LV command results in the subject error and no output.

[root@splk001 lock]# lvmdiskscan -d
WARNING: Ignoring duplicate config value: filter
0 disks
0 partitions
0 LVM physical volume whole disks
0 LVM physical volumes

but when I run df

[root@splk001 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/vg_splk001-lv_root 201585632 102552240 88793392 54% /
tmpfs 16425000 0 16425000 0% /dev/shm
/dev/sda2 495844 87751 382493 19% /boot
/dev/sda1 204580 264 204316 1% /boot/efi
/dev/mapper/3600<snip>6061ep1 10573620760 1372481432 8664030032 14% /opt/splunk/var/lib/splunk

the lv_root still exists.

to get my server to boot I had to comment out the home mount

/dev/mapper/vg_splk001-lv_root / ext4 defaults 1 1
UUID=72a70d0a-<snip> /boot ext4 defaults 1 2
UUID=B9C3-D00C /boot/efi vfat umask=0077,shortname=winnt 0 0
#/dev/mapper/vg_splk001-lv_home /home ext4 defaults 1 2
/dev/mapper/vg_splk001-lv_swap swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
/dev/mapper/3600<snip>1ep1 /opt/splunk/var/lib/splunk ext4 defaults 1 1

Anyone have any ideas?

Fail-over the server and back your data out.
From a command line type in lvmconfig --type current
Look for the keyword "filter" being entered twice or perhaps the same filter value being entered twice. Failing that, look for malformed filters
You can also try lvmconfig --type diff to get a list of non-default values.
Take a look at the manual page (man lvm.conf)

I wouldn't know a malformed filter if it slapped me across the face... I can paste the current here, but I don't wanna have anyone do a bunch of scrolling so I just added your second suggestion output below. I looked through it all and only see one "filters" section and it is below.

devices {
obtain_device_list_from_udev=1
filter=["a|/dev/mapper/mpath*|","r|.*|"]
types=["device-mapper",253]
}
global {
thin_check_executable="/usr/sbin/thin_check"
thin_check_options="-q"
}


Now.. after reading the lvmconfig --type diff -withcomments command... I am looking at that filter and it seems to be rejecting all except the mpath devices... am I reading that right?

Just between you and me... I'd have to google the filter syntax.

It seems so based on your description of the issue. You could try
Which according to centOS is the same as no filter. Did you (or anybody else) make a change to the filters recently? That kind of thing doesn't normally go sideways on its own.

what I eventually did was comment out the home mount... it allowed the server to boot up and work fine... this will do until such time as I move the services to a new environment...

thanks for the help.