Re: lvcreate throws error : device not cleared
On Fri, Aug 17, 2012 at 3:33 PM, Muhammad Yousuf Khan <sirtcp@gmail.com> wrote:
> On Fri, Aug 17, 2012 at 3:28 PM, J. B <bakshi12@gmail.com> wrote:
>>
>> Thanks, [-Z n] only works with a warrning
>
> -Z, --zero y/n
> Controls zeroing of the first KB of data in the new logical volume.
> Default is yes.
FYI it is just a work around. let see if others might help with some
detailed suggestion.
>
>
> Warning: trying to mount an unzeroed logical volume can cause the
> system to hang.
> so be careful. i haven't tried this either.
>
> for further reference check this
> http://linux.about.com/library/cmd/blcmdl8_lvcreate.htm
>
>>
>> [...]
>> WARNING: "root" not zeroed
>> Logical volume "root" created
>>
>> [...]
>>
>> What does it mean and will it create any issue in future ?
>>
>> TIA
>>
>>
>> On Fri, 17 Aug 2012 15:18:41 +0500
>> Muhammad Yousuf Khan <sirtcp@gmail.com> wrote:
>>
>>> http://forums.funtoo.org/viewtopic.php?id=1206
>>>
>>> This might help
>>>
>>> On Fri, Aug 17, 2012 at 3:00 PM, J. B <bakshi12@gmail.com> wrote:
>>> >
>>> > Dear list,
>>> >
>>> > I'm with debian wheezy with lvm2 2.02.95-4.
>>> >
>>> > whenever I try to execute lvcreate it fails. Here is the output of such
>>> > a command
>>> >
>>> > ``````````````````
>>> > #lvcreate -v -n root -L 80G mygroup
>>> >
>>> > Setting logging type to disk
>>> > Finding volume group "mygroup"
>>> > Archiving volume group "mygroup" metadata (seqno 7).
>>> > Creating logical volume root
>>> > Creating volume group backup "/etc/lvm/backup/mygroup" (seqno 8).
>>> > Found volume group "mygroup"
>>> > activation/volume_list configuration setting not defined: Checking only host tags for mygroup/root
>>> > Creating mygroup-root
>>> > Loading mygroup-root table (254:1)
>>> > Resuming mygroup-root (254:1)
>>> > Clearing start of logical volume "root"
>>> > /dev/mygroup/root: not found: device not cleared
>>> > Aborting. Failed to wipe start of new LV.
>>> > Found volume group "mygroup"
>>> > Removing mygroup-root (254:1)
>>> > Creating volume group backup "/etc/lvm/backup/mygroup" (seqno 9).
>>> > semid 7340034: semop failed for cookie 0xd4ddd6c: incorrect semaphore state
>>> > Failed to set a proper state for notification semaphore identified by cookie value 223206764 (0xd4ddd6c) to initialize waiting for incoming notifications.
>>> > `````````````````````````
>>> >
>>> > Am I missing anything ?
>>> >
>>> > Thanks
>>> >
>>> >
>>> > --
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