According
http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/en-US/RHEL510/Cluster_Logical_Volume_Manager/mirrored_volumes.html
Mirrored logical volumes are not currently supported in a cluster :(
Regards
Jan
On Nov 29, 2007 9:08 AM, Thomas Reiter <
thomas.reiter@xxxxxxxxxxxxxxxxx> wrote:
Hi everyone in this community.
I have installed a working two node cluster using the new RHEL5 clustersuite and RHEL5 x64.
kernel: ...... 2.6.18-8.el5
cman: cman-2.0.64-1.0.1.el5
lvm2-cluster version: lvm2-cluster-2.02.16-3.el5
iscsi: iscsi-initiator-utils-6.2.0.742-0.6.el5
multipath: device-mapper-multipath-0.4.7-8.el5
What i am trying to do now is to connect my shared storage (iscsi) via lvm2 clustered VG and mirrored LV.
I can successful create the PVs and VG.... but when activating the LV i get following errors in /var/log/messages:
kernel: device-mapper: table: 253:6: mirror: Error creating mirror dirty log
kernel: device-mapper: ioctl: error adding target to table
dmeventd[4626]: dmeventd ready for processing.
dmeventd[4626]: Monitoring mirror device, VG_mail-LV_mail for events
lvm[4590]: Error locking on node mail1: device-mapper: reload ioctl failed: Invalid argument
lvm[4590]: Error locking on node mail1: device-mapper: reload ioctl failed: Invalid argument
lvm[4590]: Failed to activate new LV.
What does this mean? Where to search for the mistake?
Tried already to change locking mode in /etc/lvm/lvm.conf to 2 and use locking_library liblvm2clusterlock.so from x32 RHEL4.5 without success also. (i know x32 and x64 os, but i thought it's worth a try..... couldn't find an external locking lib for RHEL5 x64)
Just for info, please find below my system config:
lvm.conf:
library_dir = "/usr/lib64"
locking_type = 3
fallback_to_clustered_locking = 1
fallback_to_local_locking = 1
locking_dir = "/var/lock/lvm"
mirror_log_fault_policy = "allocate"
mirror_device_fault_policy = "remove"
iscsi devices:
2 infortrend iscsi storage boxes with each raid 6 + Hotspare
LV size should be 6 TeraByte -> mirrored to 2nd box
multipath -l shows: (right now there is only one path configured)
mail_m0 (3600d0230006fb0c300065568b855f301) dm-2 IFT,A16E-G2130-4
[size=5.9T][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 3:0:0:0 sde 8:64 [active][undef]
mail_mlog (3600d0230006fb0c300065568b855f300) dm-3 IFT,A16E-G2130-4
[size=200M][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 3:0:0:1 sdf 8:80 [active][undef]
mail_m1 (3600d0230006fbccc0006624409e63600) dm-4 IFT,A16E-G2130-4
[size=5.9T][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 4:0:0:0 sdb 8:16 [active][undef]
vgdisplay shows:
--- Volume group ---
VG Name VG_mail
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 7
VG Access read/write
VG Status resizable
Clustered yes
Shared no
MAX LV 0
Cur LV 4
Open LV 0
Max PV 0
Cur PV 3
Act PV 3
VG Size 11.82 TB
PE Size 128.00 MB
Total PE 96824
Alloc PE / Size 96667 / 11.80 TB
Free PE / Size 157 / 19.62 GB
VG UUID cdjlgF-n0dh-mlDo-wPco-RvFl-C3fO-PUQSuh
PV Size 128MB for getting 6 TB volume.
command issued to create LV:
lvcreate -m1 -L 5.90T -n LV_mail VG_mail /dev/mapper/mail_m0 /dev/mapper/mail_m1 /dev/mapper/mail_mlog
lvs shows:
LV VG Attr LSize Origin Snap% Move Log Copy%
LV_mail VG_mail mwi-d- 5.90T LV_mail_mlog 0.00
LogVol00 VolGroup00 -wi-ao 3.41G
LogVol01 VolGroup00 -wi-ao 480.00M
but LV is NOT active because i get the error mentioned above!
Any ideas?
Every hint would be highly appriaciated.
Thanks
Thomas
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