[linux-lvm] invalid i/o protocal version
Brian Poole
raj at cerias.purdue.edu
Fri Jul 14 01:31:20 UTC 2000
>From the FAQ (http://linux.msede.com/lvm/faq.html#q20):
>20. LVM tools complain about "invalid i/o protocol version"
>
>The LVM kernel and user mode parts use common data structures to exchange
>information. The i/o protocol version specifies the version of this data
>structures. The kernel and user mode parts must use the same i/o protocol
>version in order to communicate.
>
>If you get this error message you need to obtain a new version of the LVM
>tools which uses a compatible protocol version.
Looks like you just need to upgrade your 0.8i to 0.8final, and you should
be okay. 0.8i appears to have been a pre-release version anyways, so
upgrading to the final, stable version is a good idea in any case.
-b
On Thu, 13 Jul 2000, Adam Crews wrote:
> Hello
>
> I have just downgraded from kernel 2.4.0-test1 to 2.2.16.
>
> I installed the lvm patch to 2.2.16 and can load the lvm module just fine.
> [root at scooby /root]# lsmod
> Module Size Used by
> lvm 98216 0 (autoclean)
> soundcore 3204 0 (autoclean) (unused)
> ide-probe 6512 0
> autofs 9504 1 (autoclean)
> eepro100 16752 2 (autoclean)
> unix 11396 89 (autoclean)
> ide-disk 6332 0
> ide-mod 41656 0 [ide-probe ide-disk]
> ncr53c8xx 52336 6
> sd_mod 16328 6
> scsi_mod 40716 2 [ncr53c8xx sd_mod]
> [root at scooby /root]# cat /proc/lvm
> LVM module version 0.8i (02/10/1999)
>
> Total: 0 VGs 0 PVs 0 LVs (0 LVs open)
> Global: 140 bytes vmalloced IOP version: 5 0:05:09 active
> [root at scooby /root]#
>
>
> When I try to do any lvm commands I get the following:
> [root at scooby /root]# vgscan -d -v
> <1> lvm_get_iop_version -- CALLED
> <22> lvm_check_special -- CALLED
> <22> lvm_check_special -- LEAVING
> <1> lvm_get_iop_version -- AFTER ioctl ret: 0
> <1> lvm_get_iop_version -- LEAVING with ret: 5
> vgscan -- invalid i/o protocol version
>
> [root at scooby /root]#
>
>
> I have re-compiled the lvm tools against the 2.2.16 src and libs, but I
> get the same message.
>
> How can I fix this, or what other info is needed to figure out what is
> happening?
>
> -adam
>
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