[linux-lvm] lvcreate gives 'device-mapper: reload ioctl failed: Invalid argument'
Matt McHenry
jerith at speakeasy.org
Sat Nov 4 02:27:00 UTC 2006
Thanks for your continued help. It's still not working, though.
I ran 'dmsetup remove maingroup-dvd' and 'lvremove maingroup/dvd' and
rebooted. It looks like it worked:
# 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: 0 31457280 linear 8:11 384
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-swap1: 0 2097152 linear 8:7 43786624
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
But lvcreate still fails:
# 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.
(note that I have made the suggested change to /etc/lvm/lvm.conf
and am still getting those /dev/cdrom errors)
On Thu, 2 Nov 2006, Jonathan E Brassow wrote:
> If linux reorders your devices, it won't affect LVM.
>
> The two logical volumes you mentioned do not overlap. The important thing to
> look at there is the "stripes" section. You can see that 'gen-website' lives
> on 'pv5' (i.e. the 5th physical volume in the volume group) and that it
> starts at extent '0'. 'dvd' also lives on 'pv5', but it starts at extent
> 3840 - directly after 'gen-website'.
>
> So, you are ok to do the lvremove maingroup/dvd.
>
> brassow
>
> P.S. If you accidentally did a 'lvremove -ff <vg>' and wiped out all your
> volumes, there is no need to panic. You can simply use 'vgcfgrestore' to
> bring them back. Most mistakes in LVM2 are reversible, which is nice. :)
>
> On Nov 1, 2006, at 7:07 PM, Matt McHenry wrote:
>
>> On Wed, 1 Nov 2006, Jonathan E Brassow wrote:
>>
>> > You can certainly try an 'lvremove maingroup/dvd'. It seems to me that
>> > the logical volume is in the metadata (you can look for it in
>> > /etc/lvm/backup/maingroup), but for some reason it is not able to
>> > complete the load of that device into device-mapper. Because it only
>> > partially succeeds, it is giving you a device with no table... After
>> > doing the 'lvremove' you may need to also do a 'dmsetup remove
>> > maingroup-dvd'. Once completely removed, you could try your 'lvcreate'
>> > again.
>>
>> I took a look in /etc/lvm/backup/maingroup. Again keeping in mind
>> that I don't know much about LVM, it looks to me like the 'gen-website'
>> and 'dvd' LVs are overlapping somehow. Assuming that's correct, I'm still
>> reluctant to try any 'remove' commands because I don't want to destroy the
>> data on the gen-website LV. So once again I'll await further replies.
>> :)
>>
>> gen-website {
>> id = "GhsR38-lmVZ-5gyN-fbt3-RWJv-f9rF-25aqpy"
>> status = ["READ", "WRITE", "VISIBLE"]
>> segment_count = 1
>>
>> segment1 {
>> start_extent = 0
>> extent_count = 3840 # 15 Gigabytes
>>
>> type = "striped"
>> stripe_count = 1 # linear
>>
>> stripes = [
>> "pv5", 0
>> ]
>> }
>> }
>>
>> dvd {
>> id = "E2VpR0-rfCr-PA4r-Mrtz-50au-2s5T-kGTP5E"
>> status = ["READ", "WRITE", "VISIBLE"]
>> segment_count = 1
>>
>> segment1 {
>> start_extent = 0
>> extent_count = 3840 # 15 Gigabytes
>>
>> type = "striped"
>> stripe_count = 1 # linear
>>
>> stripes = [
>> "pv5", 3840
>> ]
>> }
>> }
>>
>> > I talked to someone about this and they said that it could be a kernel
>> > device-mapper/user-space device-mapper mismatch issue. I'm not sure I
>> > understand that logic, given that you are able to load other devices of
>> > the same target type (i.e. linear). Perhaps that person would like to
>> > speak up here?
>>
>> Here's a repeat of the version info I posted earlier. I'm not
>> sure if this is reporting kernel or user-space info (or both), and I don't
>> see any more version info under /proc/ ...
>>
>> # lvm version
>> LVM version: 2.02.06 (2006-05-12)
>> Library version: 1.02.07 (2006-05-11)
>> Driver version: 4.4.0
>>
>>
>> > P.S. Are you always getting the 'cdrom' error? You may wish to change
>> > the filter option to exclude the cdrom device. To do that, change the
>> > "filter" line in /etc/lvm/lvm.conf to:
>> > filter = [ "r|/dev/cdrom|" ]
>>
>> Yes, thanks for that (I recently added a new dvd burner and hadn't
>> had a chance to make that change yet). Speaking of, any chance that such
>> a hardware change might have anything to do with this problem? (It may
>> have changed device names for some of the pvs; I don't remember for sure.)
>>
>> ----------------------
>> Matt McHenry
>> http://www.speakeasy.org/~jerith/
>> jerith at speakeasy.org
>> be052 at scn.org
>>
>> _______________________________________________
>> linux-lvm mailing list
>> linux-lvm at redhat.com
>> https://www.redhat.com/mailman/listinfo/linux-lvm
>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>>
>
> _______________________________________________
> linux-lvm mailing list
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> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
>
----------------------
Matt McHenry
http://www.speakeasy.org/~jerith/
jerith at speakeasy.org
be052 at scn.org
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