regresja w lvm2-2.02.94?

[Paweł Sikora]

On Friday 06 of April 2012 17:13:17 Jan Rękorajski wrote:
> On Thu, 05 Apr 2012, Jan Rękorajski wrote:
> 
> > On Thu, 05 Apr 2012, Paweł Sikora wrote:
> > 
> > > na wersji 2.02.84 tworzenie snapshota dziala:
> > > 
> > > root w src ~]# lvcreate -s -n lv_backup -l 100%FREE /dev/vg_home/lv_services
> > >   /dev/mapper/vg_home-lv_backup not set up by udev: Falling back to direct node creation.
> > >   The link /dev/vg_home/lv_backup should had been created by udev but it was not found. Falling back to direct link creation.
> > >   Unable to find dmeventd.
> > >   Unable to find dmeventd.
> > >   vg_home-lv_backup: event registration failed: No such process
> > >   vg_home/snapshot0: snapshot segment monitoring function failed.
> > >   Logical volume "lv_backup" created
> > >   /dev/mapper/vg_home-lv_services-real not set up by udev: Falling back to direct node creation.
> > >   /dev/mapper/vg_home-lv_services-real: mknod for vg_home-lv_services-real failed: File exists
> > >   /dev/mapper/vg_home-lv_services-real: open failed: No such file or directory
> > >   /dev/mapper/vg_home-lv_backup-cow not set up by udev: Falling back to direct node creation.
> > >   /dev/mapper/vg_home-lv_backup-cow: mknod for vg_home-lv_backup-cow failed: File exists
> > >   /dev/mapper/vg_home-lv_backup-cow: open failed: No such file or directory
> > >   /dev/mapper/vg_home-lv_services-real not set up by udev: Falling back to direct node creation.
> > >   /dev/mapper/vg_home-lv_services-real: mknod for vg_home-lv_services-real failed: File exists
> > >   /dev/mapper/vg_home-lv_services-real: open failed: No such file or directory
> > > 
> > > aktualizacja do 2.02.94 (bez restartu maszyny / regenreacji initrd):
> > > 
> > > [root w src ~]# lvcreate -s -n lv_backup -l 100%FREE /dev/vg_home/lv_services
> > >   /dev/vg_home/lv_backup: not found: device not cleared
> > >   Aborting. Failed to wipe snapshot exception store.
> > 
> > Regresja polega na tym że lvm przestał udawać że wszystko działa jak mu
> > udev nie tworzy symlinków w /dev. Jak puścisz to z -v to zobaczysz o co
> > mu chodzi.
> > Niestety jeszcze mi się nie udało znaleźć skąd to się bierze, może ktoś
> > ma pomysł?
> 
> Ok, pytanie pomocnicze - czy używasz tam systemd?

nie.

> Zainstaluj tam kernel 3.3.1-2 lub 3.0.27-2 (oba się właśnie budują) i 
> daj znać czy pomogło.

w chwili testu mialem tam 3.3.0, zrobilem upgrejd do 3.3.1-1 + lvm 2.02.9*5*
i snapshot znow zaczal dzialac.

[root w src ~]# lvcreate -s -n lv_backup -l 100%FREE /dev/vg_home/lv_services -v
    Setting logging type to disk
    Setting chunksize to 8 sectors.
    Finding volume group "vg_home"
    Archiving volume group "vg_home" metadata (seqno 422).
    Creating logical volume lv_backup
    Creating volume group backup "/etc/lvm/backup/vg_home" (seqno 423).
    Found volume group "vg_home"
    activation/volume_list configuration setting not defined: Checking only host tags for vg_home/lv_backup
    Creating vg_home-lv_backup
    Loading vg_home-lv_backup table (254:2)
    Resuming vg_home-lv_backup (254:2)
    Clearing start of logical volume "lv_backup"
    Creating logical volume snapshot0
    Found volume group "vg_home"
    Found volume group "vg_home"
    Creating vg_home-lv_services-real
    Loading vg_home-lv_services-real table (254:3)
    Resuming vg_home-lv_services-real (254:3)
    Loading vg_home-lv_services table (254:1)
    Creating vg_home-lv_backup-cow
    Loading vg_home-lv_backup-cow table (254:4)
    Resuming vg_home-lv_backup-cow (254:4)
    Loading vg_home-lv_backup table (254:2)
    Suspending vg_home-lv_services (254:1) with filesystem sync with device flush
    Suspending vg_home-lv_services-real (254:3) with filesystem sync with device flush
    Found volume group "vg_home"
    Loading vg_home-lv_services-real table (254:3)
    Suppressed vg_home-lv_services-real identical table reload.
    Loading vg_home-lv_backup-cow table (254:4)
    Suppressed vg_home-lv_backup-cow identical table reload.
    Resuming vg_home-lv_services-real (254:3)
    Resuming vg_home-lv_backup (254:2)
    Resuming vg_home-lv_services (254:1)
    Monitoring vg_home/snapshot0
    Creating volume group backup "/etc/lvm/backup/vg_home" (seqno 424).
  Logical volume "lv_backup" created