[Solved]Re: PV and LVM resize ext4

[Tait Clarridge]

On Sat, 2009-10-17 at 15:45 +0200, Roberto Ragusa wrote:
> Ambrogio wrote:
> 
> >> e2fsck -f /dev/vg_taitsvolume/lv_root
> >> resize2fs -p /dev/vg_taitsvolume/lv_root 30G
> >> lvreduce --size 30G vg_taitsvolume/lv_root --test
> >> lvreduce --size 30G vg_taitsvolume/lv_root
> > i suggest to reduce the LV to a little more than 30G, or you have to
> > calculate at block level the right dimension. Maybe 31GB is a good
> > choise to eliminate the risks of lost the last blocks in the filesystem.
> 
> Well said.
> Never trust the definition of GB, the padding and rounding
> rules etc.
> 
> Resize the filesystem to 20GB, then resize the volume to 30GB,
> then resize the fileystem again with no size specification:
> it will fill the available space (30GB).
> 
> > But... you can use a more simple algoritm
> > 
> > make the LV on the new disks
> > resize the old fs to feet the size of the new lv (a little less)
> > dd the filesystem to the new LV
> > resize the new fs as to feet the entire LV
> 
> Agreed on this one too.
> 
> -- 
>    Roberto Ragusa    mail at robertoragusa.it
> 

Alright, so I basically took the same steps I outlined in my OP. This
was because I wanted to keep the same names for the VG and LVs without
having to change too much of the other configurations.

If anyone would like, I can send them the exact steps I took, but they
were almost exactly as I had laid out in the OP.

Thanks for the suggestions and advice,

Tait


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