Hi,
I have a problem where I'd like to be able to specify a physical device as an
LV create option:
---
disk_config lvm fstabkey:device
vg main md2,md3
main-root / 10G xfs defaults
main-mnt /home/mnt 50G xfs defaults
main-solr /srv/solr/disk1 0- xfs defaults lvcreateopts="/dev/md3"
---
Please assume that the md devices are created OK (which they are), I'd like for
main-solr LV to use 100% of the PD /dev/md3
Using (undocumented?) lvcreateopts I was able to see the device trying to be
used, but the ordering is incorrect, the PD switch to the lvcreate command
should be at the end of the command, but lvcreateopts is added as the beginning
flags the 'lvcreate' command...
To get past that we can change /usr/share/fai/setup-storage/Commands.pm :
&FAI::push_command( "lvcreate -n $lv -L " .
&FAI::convert_unit($lv_size->{eff_size} . "B") . " $vg $create_options",
"vg_enabled_$vg",
However this didn't work as the size option used '0-' trys to consume the
entire VG size (so both, md2 and md3)
VG #PV #LV #SN Attr VSize VFree
main 2 2 0 wz--n- 1.79t 1.73t
the lvcreate command looks like:
lvcreate -n solr -L 1794482.72765625 main /dev/md3
the command fails as there are already devices using the VG - so the full VG
size is not possible to use...
I then thought maybe I could change the lvcreateopts to comsume 100% of the PV
(rather than VG), but I think this isn't parsed by Parsed.pm properly?
lvcreateopts="-l +100%PVS /dev/md3"
Anyway, I can work round this by using the above hack to Commands.pm and
setting the size option in the disk_config recipe to something like 900G:
main-solr /srv/solr/disk1 900G xfs defaults lvcreateopts="/dev/md3"
There is probably a more elegant way to do this though, you may have some
pointers?
Apologies if this is the wrong list, I wasn't sure since I thought I could
assist with the Commands.pm change if needed?
Thanks,
Luke
