[PVE-User] LVM usage

Daniel daniel at linux-nerd.de
Sun Jan 27 13:34:59 CET 2019


Yes, I run it via Cron on the Host. I found a Script in the Proxmox Forum.
That’s working for me fine.

Thx 

Am 27.01.19, 13:19 schrieb "pve-user im Auftrag von Dmitry Petuhov" <pve-user-bounces at pve.proxmox.com im Auftrag von mityapetuhov at gmail.com>:

    No, that's not bug, that's feature. If fstrim frees space, then you have 
    discard enabled on host (in VM config).
    
    You need to enable discard for guest filesystems on mount (usually in 
    /etc/fstab), or just put fstrim to crontab.
    
    
    26.01.2019 23:56, Daniel wrote:
    > But when this is not enbaled by default in Proxmox it sounds like a "bug" inside Proxmox?
    > Problem is that I have in general no access to mount options inside Proxmox.
    >
    > Fstrim is working for me at the moment. But this cant be a working solution.
    >
    > Am 26.01.19, 21:25 schrieb "pve-user im Auftrag von Dmitry Petuhov" <pve-user-bounces at pve.proxmox.com im Auftrag von mityapetuhov at gmail.com>:
    >
    >      This means that this 94.22% was once used. LVM knows when guest uses
    >      block first time, and allocates it at this omoment, but does not knows
    >      when it is freed in guest. You need to enable discard both in disk
    >      config on host and on filesystem in guest (via mount option of FS, or
    >      regulary run fstrim or its analog in your guest OS) to free space on
    >      host's LVM level.
    >      
    >      26.01.2019 23:17, Daniel пишет:
    >      > Hi there,
    >      >
    >      >
    >      >
    >      > i have a question. Proxmox is telling me that my THIN-LVM getting more and more full.
    >      >
    >      > I checked some virtual machines and I saw something weird (also on different hosts)
    >      >
    >      >
    >      >
    >      >    --- Logical volume ---
    >      >
    >      >    LV Path                /dev/pve/vm-196-disk-1
    >      >
    >      >    LV Name                vm-196-disk-1
    >      >
    >      >    VG Name                pve
    >      >
    >      >    LV UUID                IOLFz3-QmhU-VqFr-nJlo-Ulrr-bsYX-PzJpgW
    >      >
    >      >    LV Write Access        read/write
    >      >
    >      >    LV Creation host, time host09, 2017-11-18 14:18:47 +0100
    >      >
    >      >    LV Pool name           data
    >      >
    >      >    LV Status              available
    >      >
    >      >    # open                 1
    >      >
    >      >    LV Size                500.00 GiB
    >      >
    >      >    Mapped size            94.22%
    >      >
    >      >    Current LE             128000
    >      >
    >      >    Segments               1
    >      >
    >      >    Allocation             inherit
    >      >
    >      >    Read ahead sectors     auto
    >      >
    >      >    - currently set to     256
    >      >
    >      >    Block device           253:7
    >      >
    >      >
    >      >
    >      > As I understand the LVM is using 94,22% of the available Storage (500GB). When I check in the VPS it self it show me
    >      >
    >      >
    >      >
    >      > Filesystem                        Size  Used Avail Use% Mounted on
    >      >
    >      > /dev/mapper/pve-vm--196--disk--1  492G   32G  435G   7% /
    >      >
    >      >
    >      >
    >      > So only 32GB is used. What is happened there? There are no  Snapshots or something like this.
    >      >
    >      >
    >      >
    >      > Cheers
    >      >
    >      >
    >      >
    >      > Daniel
    >      >
    >      > _______________________________________________
    >      > pve-user mailing list
    >      > pve-user at pve.proxmox.com
    >      > https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
    >      _______________________________________________
    >      pve-user mailing list
    >      pve-user at pve.proxmox.com
    >      https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
    >      
    >
    >
    > _______________________________________________
    > pve-user mailing list
    > pve-user at pve.proxmox.com
    > https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
    _______________________________________________
    pve-user mailing list
    pve-user at pve.proxmox.com
    https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
    




More information about the pve-user mailing list