i have a server (hp x86 blade running OEL/RHEL5) that has a faulty lvm filter configured in lvm.conf
filter = ["a|^/dev/emcpower.*|", "r/.*/"]
we also use cciss devices so there should have been an accept statement in there for them at /dev/cciss. This oversight has not caused a problem so far. the 'system' partitions (e.g. /var, /home, etc.) are not in volume groups but just on disk.
But both the '/' mount and the swap space is configured on an LVM volume group with physical volumes on the cciss device which is being rejected by the lvm filter.
The server seems to be working fine but how is this possible?
mount output
/dev/mapper/VolGroup01-LogVol00 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/cciss/c0d0p8 on /home type ext3 (rw)
/dev/cciss/c0d0p7 on /opt type ext3 (rw)
/dev/cciss/c0d0p6 on /var type ext3 (rw)
/dev/cciss/c0d0p5 on /tmp type ext3 (rw)
/dev/cciss/c0d0p3 on /usr type ext3 (rw)
/dev/cciss/c0d0p2 on /temp type ext3 (rw)
/dev/cciss/c0d0p1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
nfsd on /proc/fs/nfsd type nfsd (rw)
from /etc/fstab
/dev/VolGroup01/LogVol00 / ext3 defaults 1 1
LABEL=/home /home ext3 defaults 1 2
LABEL=/opt /opt ext3 defaults 1 2
LABEL=/var /var ext3 defaults 1 2
LABEL=/tmp /tmp ext3 defaults 1 2
LABEL=/usr /usr ext3 defaults 1 2
LABEL=/temp /temp ext3 defaults 1 2
LABEL=/boot /boot ext3 defaults 1 2
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/VolGroup01/LogVol01 swap swap defaults 0 0
/dev/VolGroup01/LogVol02 swap swap defaults 0 0
...
disks by label
[user@host~]$ ls -al /dev/disk/by-label/
total 0
drwxr-xr-x 2 root root 180 Apr 12 19:23 .
drwxr-xr-x 6 root root 120 Apr 12 19:23 ..
lrwxrwxrwx 1 root root 18 Apr 12 19:23 boot -> ../../cciss/c0d0p1
lrwxrwxrwx 1 root root 18 Apr 12 19:23 home -> ../../cciss/c0d0p8
lrwxrwxrwx 1 root root 18 Apr 12 19:23 opt -> ../../cciss/c0d0p7
lrwxrwxrwx 1 root root 18 Apr 12 19:23 temp -> ../../cciss/c0d0p2
lrwxrwxrwx 1 root root 18 Apr 12 19:23 tmp -> ../../cciss/c0d0p5
lrwxrwxrwx 1 root root 18 Apr 12 19:23 usr -> ../../cciss/c0d0p3
lrwxrwxrwx 1 root root 18 Apr 12 19:23 var -> ../../cciss/c0d0p6
vgdisplay
[user@host ~]$ sudo vgdisplay -v VolGroup01
Using volume group(s) on command line
Finding volume group "VolGroup01"
Wiping cache of LVM-capable devices
Volume group "VolGroup01" not found
dev mapper
[user@host ~]$ ls -al /dev/mapper/VolGroup0*
brw------- 1 root root 253, 0 Apr 12 19:23 /dev/mapper/VolGroup01-LogVol00
brw------- 1 root root 253, 1 Apr 12 19:23 /dev/mapper/VolGroup01-LogVol01
brw------- 1 root root 253, 2 Apr 12 19:23 /dev/mapper/VolGroup01-LogVol02
swapon
[user@host ~]$ swapon -s
Filename Type Size Used Priority
/dev/mapper/VolGroup01-LogVol01 partition 18481144 1860804-1
/dev/mapper/VolGroup01-LogVol02 partition 18874360 0 -2
/etc/lvm/backup/VolGroup01
VolGroup01 {
id = "KtRbKi-wZ8l-rsgg-LyoT-edcO-2Nzo-qsDmaK"
seqno = 4
status = ["RESIZEABLE", "READ", "WRITE"]
flags = []
extent_size = 65536 # 32 Megabytes
max_lv = 0
max_pv = 0
physical_volumes {
pv0 {
id = "H9ludV-lTJK-ivK1-HcUf-G8KR-krD9-TsNJrp"
device = "/dev/cciss/c0d0p9" # Hint only
status = ["ALLOCATABLE"]
flags = []
dev_size = 93964122 # 44.8056 Gigabytes
pe_start = 384
pe_count = 1433 # 44.7812 Gigabytes
}
}
logical_volumes {
LogVol00 {
id = "1P5pnt-jFXu-ec4f-NfWC-q9jx-CRGc-33lyPd"
status = ["READ", "WRITE", "VISIBLE"]
flags = []
segment_count = 1
segment1 {
start_extent = 0
extent_count = 125 # 3.90625 Gigabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv0", 0
]
}
}
LogVol01 {
id = "dvqggw-JflJ-KC9Y-QEhw-pejq-GgIv-taDNzj"
status = ["READ", "WRITE", "VISIBLE"]
flags = []
segment_count = 1
segment1 {
start_extent = 0
extent_count = 564 # 17.625 Gigabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv0", 125
]
}
}
LogVol02 {
id = "ZDTUSD-ItMw-xxBK-l1Le-DYX7-J4i3-UYKN4Q"
status = ["READ", "WRITE", "VISIBLE"]
flags = []
segment_count = 1
segment1 {
start_extent = 0
extent_count = 576 # 18 Gigabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv0", 689
]
}
}
}
}
