in order to grow the size of the swap partition, I already resized the file system of partition where is LVM...
(resize2fs -p /dev/mapper/fedora_localhost-home) but now I have problems to reduce the volume of the volume group. With the command: lvm lvrdeuce -L 650G /dev/fedora_locahost ============== I get the message "path required for Logical Volume "/fedora_localhost" Please provide a volume group name. ============ also he path : dev/mapper/fedora_localhost result to be not correct ---------------- with the command : ls -l /dev/fedora_localhost give me this output: lrrwx...... root root 7 jun ... home -> ../dm-1 lrrwx...... root root 7 jun ... root -> ../dm-2 lrrwx...... root root 7 jun ... swap -> ../dm-0 I would like know what is the name of the "volume group" and what is his path (on my computer) please. thank you On Sun, Jun 14, 2015 at 5:40 PM, Dario Lesca <d.le...@solinos.it> wrote: > Il giorno dom, 14/06/2015 alle 12.29 +0300, Angelo Moreschini ha scritto: > > Ciao Dario, > > I need a little explanation, because I am not able to well understood > about how to get of the value of the free space. > > I made some tests: > > using the command pvscan I get this output: > ----- > PV /dev/sda2 VG fedora_localhost lvm2 [931.02 GiB / 64.00 MiB free] > Total: 1 [931.02 GiB] / in use: 1 [931.02 GiB]* / in no VG: 0 [0 ]* > ----- > what means this ? > I can think this output concern ALL the Volume Group of LVM: > And the row up seem to indicate that they are (only) 64 MB free > *(but what means "/ in no VG: 0 [0 ]" in the row down?)* > > > I made the same test (inside the lvm environment) using the command lvscan: > this time I got this output: > ----- > lvm> lvscan > ACTIVE '/dev/fedora_localhost/swap' [7.75 GiB] inherit > ACTIVE '/dev/fedora_localhost/home' [873.21 GiB] inherit > ACTIVE '/dev/fedora_localhost/root' [50.00 GiB] inherit > ----- OK! the total is 930.96 ------ > > that the second control confirm the former one, and it shows also more > details... > > But what does not enter in my head, is the fact that the (huge) quantity > of free space (845449680 ) of the "home" partition is not reported when > I used the command pvscan : ... > > This is the output of the command line df -k: > ----- > [angelo_dev@localhost ~]$ df -k > Filesystem 1K-blocks Used > Available Use% Mounted on > /dev/mapper/fedora_localhost-root 51475068 10518776 38318468 > 22% / > devtmpfs 4046300 0 > 4046300 0% /dev > tmpfs 4057324 > 152 4057172 1% /dev/shm > tmpfs 4057324 904 > 4056420 1% /run > tmpfs 4057324 > 0 4057324 0% /sys/fs/cgroup > tmpfs 4057324 668 > 4056656 1% /tmp > */dev/mapper/fedora_localhost-home 901125392 9878132 845449680 2% > /home* > /dev/sda1 487652 105670 > 352286 24% /boot > tmpfs 811468 > 28 811440 1% /run/user/1001 > ----- > > *in shor*t: I would like understand because I have to ask (shrink) free space, > in order to expand the swap partition - in the moment that - the home > partition (THAT BELONGS TO THE SAME VG) already has a huge amount of > free space ? > > > The free space is into filesystem, and not into LVM. > The free space into filesystem is not useful vie LVM, > You must be transferred a little bit of free space from filesystem to LVM > Shrink filesystem then shrink LVM partition. > > When you install Fedora, and do not do a manual partition, anaconda use > all disk space for all default partition, swap(8Gb), /(50 Gb) and /home > (all the rest), 900Gb in your case. > > Then now, you have a huge /home, filling for 9Gb (2%), and 0 Gb of LVM > free for extend other FS or Swap. > > When I install, I do not allocate all space but only a little bit (or what > I have need) for my filesystem. Because, after, is more simple extend rater > than shrink. > > Now I suggest you to shrink /home to 200 Gb (or what do you want) and > leave more free space to assign where it's necessary or create new volume. > > To do that follow the my previous generic procedure. > If you have ext4 FS (blkid is your friend), after you have unmount /home, > the command are: > > sudo umount /dev/fedora_localhost/home # umount fs > sudo fsck.ext4 -f /dev/fedora_localhost/home # check fs > sudo resize2fs /dev/fedora_localhost/home 190G # shrink fs to a little > bit less what you want > sudo lvresize --size 200G /dev/fedora_localhost/home # Resize partition > to what you want > sudo resize2fs /dev/fedora_localhost/home # extend the FS to partition > size, what you want. > sudo mount -a > sudo pvscan > > At this point you'll have a lot of free space to do whatever you want. > > *IMPORTANT:* > *Before of all, do a full backup of your important data, if I or you have > written something wrong , you will need to reinstall from scratch* > > Ciao. > > -- > > Dario Lesca > (inviato dal mio Linux Fedora 22 con Gnome 3.16) > > > -- > users mailing list > users@lists.fedoraproject.org > To unsubscribe or change subscription options: > https://admin.fedoraproject.org/mailman/listinfo/users > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines > Have a question? Ask away: http://ask.fedoraproject.org > >
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