More than one device on a host
Oezcan Acar
acar at unitedinter.net
Fri May 11 21:33:27 UTC 2007
I know this Brad. I added the second harddist expl. with mogadm like:
mogadm --lib=/usr/lib/perl5/5.8.7/ --trackers=192.168.1.2:6001 device add storage1 2
The first disk was added too with mogaddm:
mogadm --lib=/usr/lib/perl5/5.8.7/ --trackers=192.168.1.2:6001 device add storage1 1
dev1 is detected and ok, but dev2 is not!
tracker1:/home/bizimalem # mogadm --lib=/usr/lib/perl5/5.8.7 --trackers=192.168.1.230:6001 device list
storage1 [1]: alive
used(G) free(G) total(G)
dev1: alive 1.618 462.119 463.737
dev2: alive 0.000 0.000 0.000
-------- Original-Nachricht --------
Datum: Fri, 11 May 2007 21:31:32 +0000 (UTC)
Von: Brad Fitzpatrick <brad at danga.com>
An: Oezcan Acar <acar at unitedinter.net>
CC: mogilefs at lists.danga.com
Betreff: Re: More than one device on a host
> MogileFS doesn't auto-detect or auto-add new disks at all.
>
> You have to TELL IT about new disks (and where they are) with mogadm.
>
> See... ?
>
> $ mogadm
> Usage: (enter any command prefix, leaving off options, for further help)
>
> mogadm check Check the state of the MogileFS world.
> mogadm stats Show MogileFS system statistics.
> mogadm host ...
> host add ... Add a host to MogileFS.
> host delete ... Delete a host.
> host list List all hosts.
> host mark ... Change the status of a host.
> (equivalent to 'modify --status')
> host modify ... Modify a host's properties.
> mogadm device ...
> device add ... Add a device to a host.
> device list List all devices, for each host.
> device mark ... Mark a device as
> {alive,dead,down,readonly}
> mogadm domain ...
> domain add ... Add a domain (namespace)
> domain delete ... Delete a domain.
> domain list List all hosts.
> mogadm class ...
> class add ... Add a file class to a domain.
> class delete ... Delete a file class from a domain.
> class list List all classes, for each domain.
> class modify ... Modify properties of a file class.
> mogadm slave ...
> slave add ... Add a slave node for store usage
> slave delete ... Delete a slave node for store usage
> slave list List current store slave nodes.
> slave modify ... Modify a slave node for store usage
> mogadm fsck ...
> fsck clearlog Clear the fsck log
> fsck printlog Display the fsck log
> fsck reset ... Reset fsck position back to the
> beginning
> fsck start Start (or resume) background fsck
> fsck status Show fsck status
> fsck stop Stop (pause) background fsck
> fsck taillog Tail the fsck log
> mogadm settings ...
> settings list List all server settings
> settings set ... Set server setting 'key' to 'value'.
>
>
> $ mogadm device
> Help for 'device' command:
> (enter any command prefix, leaving off options, for further help)
>
> mogadm device add <hostname> <devid> [opts] Add a device to a
> host.
> mogadm device list List all devices, for
> each host.
> mogadm device mark <hostname> <devid> <status> Mark a device as
> {alive,dead,down,readonly}
>
>
>
> On Fri, 11 May 2007, Oezcan Acar wrote:
>
> > That was actually my question: how detects mogilefs the device on the
> storage node? In my case I added to mogstored.conf
> >
> > docroot=/database/mogdata
> >
> > and created with mkdir -p /database/mogdata
> >
> > After this operation device list output was:
> >
> > dev1: alive 1.618 462.119 463.737
> >
> > Mogilefs was able to detect the device on the storage node. After that I
> added the second device on the same storage node. Device list showing:
> >
> > dev1: alive 1.618 462.119 463.737
> > dev2: alive 0.000 0.000 0.000
> >
> > How mogilefs now knows on which disk dev2 resides?
> >
> > thanks.
> >
> >
> >
> >
> >
> >
> >
> > -------- Original-Nachricht --------
> > Datum: Fri, 11 May 2007 21:18:27 +0000 (UTC)
> > Von: Brad Fitzpatrick <brad at danga.com>
> > An: Oezcan Acar <acar at unitedinter.net>
> > CC: mogilefs at lists.danga.com
> > Betreff: Re: More than one device on a host
> >
> > > MogileFS keeps track of two states, for both devices and hosts:
> > >
> > > 1) what you told it ("alive")
> > > 2) what it actually observed.
> > >
> > > My guess is that dev2 isn't actually writable, so it's not being used.
> > > Verify permissions and such?
> > >
> > > You can see what mogile thinks of your devices with one of the mogadm
> > > commands (in somewhat-but-not-too recent mogadm/mogilefsd...)
> > >
> > > - Brad
> > >
> > >
> > > On Fri, 11 May 2007, Oezcan Acar wrote:
> > >
> > > > Hi,
> > > >
> > > > I added 2 harddisk one one host to mogilefs.
> > > >
> > > > device list:
> > > >
> > > > storage1 [1]: alive
> > > > used(G) free(G) total(G)
> > > > dev1: alive 1.618 462.119 463.737
> > > > dev2: alive 0.000 0.000 0.000
> > > >
> > > >
> > > > mogstored.conf on storage1:
> > > >
> > > > httplisten=0.0.0.0:7500
> > > > mgmtlisten=0.0.0.0:7501
> > > > docroot=/database/mogdata
> > > >
> > > > How to activate dev2 on storage1?
> > > >
> > > > thanks.
> > > >
> > > >
> > > >
> > > > --
> > > > Mit freundlichen Grüßen
> > > >
> > > > ___________________________
> > > >
> > > > Özcan Acar, Dipl. Inf(FH)
> > > > Vorstand
> > > > Smart Web Business AG
> > > >
> > > > Im Niederfeld 8
> > > > 65462 Gustavsburg
> > > >
> > > > +49 171 57 33 66 5
> > > > acar at unitedinter.net
> > > >
> > > >
> >
> > --
> > Mit freundlichen Grüßen
> >
> > ___________________________
> >
> > Özcan Acar, Dipl. Inf(FH)
> > Vorstand
> > Smart Web Business AG
> >
> > Im Niederfeld 8
> > 65462 Gustavsburg
> >
> > +49 171 57 33 66 5
> > acar at unitedinter.net
> >
> >
--
Mit freundlichen Grüßen
___________________________
Özcan Acar, Dipl. Inf(FH)
Vorstand
Smart Web Business AG
Im Niederfeld 8
65462 Gustavsburg
+49 171 57 33 66 5
acar at unitedinter.net
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