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DescriptionCorey Marthaler
2011-03-14 20:10:28 UTC
Description of problem:
This feature may just need better documentation for better understanding. Howeve, the way I understand this feature, the following set up should produce a mirror with each leg using devices with only similarly tagged devices.
# This is the cling config in lvm.conf:
cling_tag_list = [ "A", "B" ]
[root@taft-03 ~]# pvs -a -o +pv_tags /dev/sd[bcdefgh]1
PV VG Fmt Attr PSize PFree PV Tags
/dev/sdb1 taft lvm2 a- 135.66g 135.66g A
/dev/sdc1 taft lvm2 a- 135.66g 135.66g B
/dev/sdd1 taft lvm2 a- 135.66g 135.66g B
/dev/sde1 taft lvm2 a- 135.66g 135.66g C
/dev/sdf1 taft lvm2 a- 135.66g 135.66g C
/dev/sdg1 taft lvm2 a- 135.66g 135.66g A
/dev/sdh1 taft lvm2 a- 135.66g 135.66g A
[root@taft-03 ~]# lvcreate --alloc cling -m 1 -n mirror -L 200G --nosync taft
WARNING: New mirror won't be synchronised. Don't read what you didn't write!
Logical volume "mirror" created
[root@taft-03 ~]# lvs -a -o +devices
LV VG Attr LSize Log Copy% Devices
mirror taft Mwl-a- 200.00g mirror_mlog 100.00 mirror_mimage_0(0),mirror_mimage_1(0)
[mirror_mimage_0] taft iwi-ao 200.00g /dev/sdb1(0)
[mirror_mimage_0] taft iwi-ao 200.00g /dev/sdc1(0)
[mirror_mimage_1] taft iwi-ao 200.00g /dev/sdd1(0)
[mirror_mimage_1] taft iwi-ao 200.00g /dev/sde1(0)
[mirror_mlog] taft lwl-ao 4.00m /dev/sdc1(16470)
Shouldn't the above leg mimage_0 have been made up of devices with tag "A" (/dev/sd[bgh]1) and leg mimage_1 of devices with tag "B" (/dev/sd[cd]1)?
Version-Release number of selected component (if applicable):
2.6.32-94.el6.x86_64
lvm2-2.02.83-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011
lvm2-libs-2.02.83-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011
lvm2-cluster-2.02.83-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011
udev-147-2.31.el6 BUILT: Wed Jan 26 05:39:15 CST 2011
device-mapper-1.02.62-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011
device-mapper-libs-1.02.62-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011
device-mapper-event-1.02.62-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011
device-mapper-event-libs-1.02.62-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011
cmirror-2.02.83-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011
How reproducible:
Everytime
After talking with agk, I learned that only the extension of already created mirrors currently work with cling tags. Conversion and creation is not yet checked-in.
Description of problem: This feature may just need better documentation for better understanding. Howeve, the way I understand this feature, the following set up should produce a mirror with each leg using devices with only similarly tagged devices. # This is the cling config in lvm.conf: cling_tag_list = [ "A", "B" ] [root@taft-03 ~]# pvs -a -o +pv_tags /dev/sd[bcdefgh]1 PV VG Fmt Attr PSize PFree PV Tags /dev/sdb1 taft lvm2 a- 135.66g 135.66g A /dev/sdc1 taft lvm2 a- 135.66g 135.66g B /dev/sdd1 taft lvm2 a- 135.66g 135.66g B /dev/sde1 taft lvm2 a- 135.66g 135.66g C /dev/sdf1 taft lvm2 a- 135.66g 135.66g C /dev/sdg1 taft lvm2 a- 135.66g 135.66g A /dev/sdh1 taft lvm2 a- 135.66g 135.66g A [root@taft-03 ~]# lvcreate --alloc cling -m 1 -n mirror -L 200G --nosync taft WARNING: New mirror won't be synchronised. Don't read what you didn't write! Logical volume "mirror" created [root@taft-03 ~]# lvs -a -o +devices LV VG Attr LSize Log Copy% Devices mirror taft Mwl-a- 200.00g mirror_mlog 100.00 mirror_mimage_0(0),mirror_mimage_1(0) [mirror_mimage_0] taft iwi-ao 200.00g /dev/sdb1(0) [mirror_mimage_0] taft iwi-ao 200.00g /dev/sdc1(0) [mirror_mimage_1] taft iwi-ao 200.00g /dev/sdd1(0) [mirror_mimage_1] taft iwi-ao 200.00g /dev/sde1(0) [mirror_mlog] taft lwl-ao 4.00m /dev/sdc1(16470) Shouldn't the above leg mimage_0 have been made up of devices with tag "A" (/dev/sd[bgh]1) and leg mimage_1 of devices with tag "B" (/dev/sd[cd]1)? Version-Release number of selected component (if applicable): 2.6.32-94.el6.x86_64 lvm2-2.02.83-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011 lvm2-libs-2.02.83-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011 lvm2-cluster-2.02.83-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011 udev-147-2.31.el6 BUILT: Wed Jan 26 05:39:15 CST 2011 device-mapper-1.02.62-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011 device-mapper-libs-1.02.62-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011 device-mapper-event-1.02.62-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011 device-mapper-event-libs-1.02.62-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011 cmirror-2.02.83-2.el6 BUILT: Tue Feb 8 10:10:57 CST 2011 How reproducible: Everytime