It appears to me that somehow the device-mapper device was created, but
the table has not yet been loaded.
While this is the case, you will not be able to create an LV of the
same name. (It will always give you the "device-mapper: reload ioctl
failed:..." error.)
If you reboot the machine does the "maingroup-dvd:" still show up from
'dmsetup table'?
Also, after a reboot, be sure to run 'pvmove --abort'.
Once you've canceled the pvmove successfully, I would do a 'dmsetup
remove maingroup-dvd; and try the 'lvcreate -L 15G -n dvd maingroup'
again.
brassow
On Oct 28, 2006, at 4:26 PM, Matt McHenry wrote:
[2nd try sending; apologies if duplicate]
I'm running lvm2 under gentoo, and I'm getting this error when I
try to create a new logical volume:
# lvcreate -L 15G -n dvd maingroup
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
device-mapper: reload ioctl failed: Invalid argument
Failed to activate new LV.
The new vg shows up in only one of two places under /dev:
# ls /dev/maingroup/
c-p capture gen-website home music opt swap1 swap2 tmp usr
var
# ls /dev/mapper/
control maingroup-gen--website maingroup-swap1
maingroup-var
maingroup-c--p maingroup-home maingroup-swap2
maingroup-capture maingroup-music maingroup-tmp
maingroup-dvd maingroup-opt maingroup-usr
And I can't create a file system on it:
# mke2fs -j /dev/mapper/maingroup-dvd
mke2fs 1.39 (29-May-2006)
mke2fs: Device size reported to be zero. Invalid partition specified,
or
partition table wasn't reread after running fdisk, due to
a modified partition being busy and in use. You may need to
reboot
to re-read your partition table.
I found this mailing list post
[http://www.redhat.com/archives/linux-lvm/2006-April/msg00047.html]
and thought that maybe one of my pvs was bad, so I tried to add a new
pv (sda12) and migrate off of the most-recently-added one (sda11), but
the 'pvmove' command gave a similar error and said to run 'pvmove
--abort'. But that just hung. I tried to shut down in order to abort
it, but that hung 'unmounting local filesystems'. When I forced a
reboot, another of my volumes (named gen-website) seemed to have been
lost.
My first try sending this message included a level 7 log file as an
attachment. I think the mailing list may have rejected the message
because it was too big (262k), so I'm excluding it for now. Below are
some more details on my setup. Forgive me if there's extraneous stuff
here, but I want to try to provide as much detail as necessary; if
there's any more info that would be useful, please let me know.
# uname -a
Linux localhost 2.6.14-gentoo-r5 #4 SMP PREEMPT Wed Sep 13 22:40:49 EDT
2006 i686 Intel(R) Pentium(R) 4 CPU 3.00GHz GNU/Linux
# lvm version
LVM version: 2.02.06 (2006-05-12)
Library version: 1.02.07 (2006-05-11)
Driver version: 4.4.0
# fdisk -l /dev/sda
Disk /dev/sda: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 17 136521 83 Linux
/dev/sda2 18 34 136552+ da Non-FS data
/dev/sda3 35 66 257040 da Non-FS data
/dev/sda4 67 38913 312038527+ 5 Extended
/dev/sda5 67 1312 10008463+ 83 Linux
/dev/sda6 1313 3803 20008926 8e Linux LVM
/dev/sda7 3804 8784 40009851 8e Linux LVM
/dev/sda8 8785 18745 80011701 8e Linux LVM
/dev/sda9 18746 28706 80011701 8e Linux LVM
/dev/sda10 28707 33687 40009851 8e Linux LVM
/dev/sda11 33688 36178 20008926 8e Linux LVM
/dev/sda12 36179 38668 20000893+ 8e Linux LVM
/dev/sda13 38669 38913 1967931 83 Linux
# pvs
/dev/cdrom: read failed after 0 of 4096 at 0: Input/output error
PV VG Fmt Attr PSize PFree
/dev/sda10 maingroup lvm2 a- 38.15G 516.00M
/dev/sda11 maingroup lvm2 a- 38.15G 23.15G
/dev/sda12 maingroup lvm2 a- 19.07G 4.07G
/dev/sda6 maingroup lvm2 a- 19.08G 0
/dev/sda7 maingroup lvm2 a- 38.15G 0
/dev/sda8 maingroup lvm2 a- 76.30G 0
/dev/sda9 maingroup lvm2 a- 76.30G 0
# vgs
/dev/cdrom: read failed after 0 of 4096 at 0: Input/output error
VG #PV #LV #SN Attr VSize VFree
maingroup 7 12 0 wz--n- 305.21G 27.73G
# lvs
/dev/cdrom: read failed after 0 of 4096 at 0: Input/output error
LV VG Attr LSize Origin Snap% Move Log Copy%
c-p maingroup -wi-a- 4.00G
capture maingroup -wi-ao 68.00G
gen-website maingroup -wI-d- 15.00G
home maingroup -wi-ao 110.00G
music maingroup -wi-ao 30.00G
opt maingroup -wi-ao 4.00G
swap1 maingroup -wi-ao 1.00G
swap2 maingroup -wi-ao 1.00G
tmp maingroup -wi-ao 2.00G
usr maingroup -wi-ao 20.00G
var maingroup -wi-ao 7.49G
# dmsetup table
maingroup-tmp: 0 4194304 linear 8:8 154018176
maingroup-c--p: 0 8388608 linear 8:7 47980928
maingroup-capture: 0 23642112 linear 8:7 56369536
maingroup-capture: 23642112 40009728 linear 8:6 384
maingroup-capture: 63651840 78954496 linear 8:10 384
maingroup-usr: 0 19996672 linear 8:9 73400704
maingroup-usr: 19996672 974848 linear 8:8 150946176
maingroup-usr: 20971520 3891200 linear 8:8 48619904
maingroup-usr: 24862720 7708672 linear 8:8 384
maingroup-usr: 32571392 9371648 linear 8:8 52511104
maingroup-var: 0 10485760 linear 8:9 62914944
maingroup-var: 10485760 5218304 linear 8:8 145727872
maingroup-gen--website:
maingroup-music: 0 1810432 linear 8:8 158212480
maingroup-music: 1810432 17317888 linear 8:9 142705024
maingroup-music: 19128320 43786240 linear 8:7 384
maingroup-swap2: 0 2097152 linear 8:7 45883776
maingroup-opt: 0 2097152 linear 8:8 151921024
maingroup-opt: 2097152 6291456 linear 8:8 42328448
maingroup-dvd:
maingroup-swap1: 0 2097152 linear 8:7 43786624
maingroup-pvmove0:
maingroup-home: 0 62914560 linear 8:9 384
maingroup-home: 62914560 29310976 linear 8:9 113394048
maingroup-home: 92225536 19996672 linear 8:9 93397376
maingroup-home: 112222208 34619392 linear 8:8 7709056
maingroup-home: 146841600 83845120 linear 8:8 61882752
----------------------
Matt McHenry
http://www.speakeasy.org/~jerith/
jerith@speakeasy.org
be052@scn.org
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