<div dir="ltr">Hi,<div><br></div><div><br></div><div>Are you 100% sure you tried it on a "fresh" disk that was really clean?</div><div>It defiantly feels like there is some metadata or something remaining in some blocks on the disk.</div><div><br></div><div>When FAI fails, are you able check for things like md info, dm info, lvm info and the like?</div><div><br></div><div>You may have to do some dmsetup remove, vgremove or pvremove.</div><div>wiptefs is also a good utility at clearing metadata, run it against any partitions before removing them.</div><div>Then remove partitions with dd, put some zeros on the first few Mg of the disk.</div><div><br></div><div><br></div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div><br></div>Cheers,<div>Just</div></div></div>
<br><div class="gmail_quote">On 4 January 2018 at 13:47, Andreas Heinlein <span dir="ltr"><<a href="mailto:aheinlein@gmx.com" target="_blank">aheinlein@gmx.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">Am 03.01.2018 um 17:28 schrieb Holger Parplies:<br>
> Hi,<br>
><br>
> Andreas Heinlein wrote on 2018-01-03 13:53:40 +0100 [setup-storage fails on blank disk]:<br>
>> [...]<br>
>> I have encountered a problem with setup-storage which occurs only when<br>
>> the disk is blank, i.e. wiped with nwipe/dban or brand new. It then<br>
>> fails on creating the LVM; running 'pvcreate' returns 'cannot open<br>
>> /dev/sda5 exclusively'.<br>
> this is probably unrelated, but is there any reason to put the LVM PV inside<br>
> a "logical" volume? DOS extended partitions seem to be the worst hack ever<br>
> invented to get around a limitation in a bad design, yet they repeatedly<br>
> and apparently unnecessarily pop up in quoted disk_configs:<br>
><br>
>> [...]<br>
>> This is your disk_config file:<br>
>> # generic disk configuration for one small disk<br>
>> # disk size from 500Mb up to what you can buy today<br>
>> #<br>
>> # <type> <mountpoint> <size in mb> <fstype> <mount options> [extra options]<br>
>><br>
>> disk_config disk1 disklabel:msdos bootable:1 preserve_lazy:6 align-at:1M fstabkey:uuid<br>
>> primary /boot 300 ext4 rw createopts="-O ^64bit,^metadata_csum"<br>
>> logical - 29500-30000 - -<br>
>> logical /media/daten 1024- ext4 acl createopts="-O ^64bit,^metadata_csum -L Daten"<br>
> I count three partitions, which would work perfectly with primary partitions<br>
> (furthermore, you are using LVM to have an arbitrary number of named and<br>
> dynamic "volumes" (i.e. partitions) anyway, so if you needed more, LVM would<br>
> be the superior mechanism; of course, your specific requirements may vary).<br>
> Ok, you are preserving a logical partition, so in this particular case you'd<br>
> actually need to stick with logical partitions, but the partition in question<br>
> is ext4, not FAT-based, so it doesn't appear to be a legacy Windoze issue.<br>
><br>
> My point: am I missing something, and there is some obscure benefit of putting<br>
> an LVM container within an extended-partition-container (such as hiding it<br>
> from something), or is it simply a common misconception that you for some<br>
> reason cannot or should not put an LVM PV (or even several individual native<br>
> Linux partitions - such as /, /var and /tmp) into primary partitions -<br>
> assuming you only need upto four of them (and, obviously, assuming you are<br>
> still using MSDOS partition tables)?<br>
><br>
> Or, differently: for a *blank disk*, you obviously won't be preserving sda6,<br>
> and you probably aren't referencing it by partition number ("fstabkey:uuid"),<br>
> so does using 'primary' instead of 'logical' for all three partitions change<br>
> anything concerning the error you are experiencing?<br>
><br>
> Hope that helps someone (perhaps me ;-) ...<br>
><br>
> Regards,<br>
> Holger<br>
</div></div>Hello,<br>
<br>
yes, you are right - in some way, this *is* a legacy windows issue that<br>
has developed over time. In fact, the preserved partition once was a FAT<br>
partition as long as we had dualboot installations on these machines. We<br>
finally removed the dualboot two or three years ago and chose to format<br>
this partition ext4 instead. Why we didn't move to primary partitions or<br>
put it within the LVM at that time - I don't know.<br>
<br>
On the other hand, up to now we had no problems with that, so no urge to<br>
change anything. If you think it might help, I could try changing this.<br>
<br>
Bye,<br>
Andreas<br>
</blockquote></div><br></div>
<br>
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