Re: [ceph-users] CephFS removal.
What version of Ceph are you running? It's varied by a bit.
But I think you want to just turn off the MDS and run the fail
command — deactivate is actually the command for removing a logical
MDS from the cluster, and you can't do that for a lone MDS because
there's nobody to pass off the data to. I'll make a ticket to clarify
this. When you've done that you should be able to delete it.
-Greg
On Mon, Feb 2, 2015 at 1:40 AM, warren.je...@stfc.ac.uk wrote:
Hi All,
Having a few problems removing cephfs file systems.
I want to remove my current pools (was used for test data) – wiping all
current data, and start a fresh file system on my current cluster.
I have looked over the documentation but I can’t find anything on this. I
have an object store pool, Which I don’t want to remove – but I’d like to
remove the cephfs file system pools and remake them.
My cephfs is called ‘data’.
Running ceph fs delete data returns: Error EINVAL: all MDS daemons must be
inactive before removing filesystem
To make an MDS inactive I believe the command is: ceph mds deactivate 0
Which returns: telling mds.0 135.248.53.134:6809/16692 to deactivate
Checking the status of the mds using: ceph mds stat returns: e105: 1/1/0 up
{0=node2=up:stopping}
This has been sitting at this status for the whole weekend with no change. I
don’t have any clients connected currently.
When trying to manually just remove the pools, it’s not allowed as there is
a cephfs file system on them.
I’m happy that all of the failsafe’s to stop someone removing a pool are all
working correctly.
If this is currently undoable. Is there a way to quickly wipe a cephfs
filesystem – using RM from a kernel client is really slow.
Many thanks
Warren Jeffs
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Re: [ceph-users] CephFS removal.
I am running 0.87, In the end I just wiped the cluster and started again - it
was quicker.
Warren
-Original Message-
From: Gregory Farnum [mailto:g...@gregs42.com]
Sent: 12 February 2015 16:25
To: Jeffs, Warren (STFC,RAL,ISIS)
Cc: ceph-users@lists.ceph.com
Subject: Re: [ceph-users] CephFS removal.
What version of Ceph are you running? It's varied by a bit.
But I think you want to just turn off the MDS and run the fail
command — deactivate is actually the command for removing a logical MDS from
the cluster, and you can't do that for a lone MDS because there's nobody to
pass off the data to. I'll make a ticket to clarify this. When you've done that
you should be able to delete it.
-Greg
On Mon, Feb 2, 2015 at 1:40 AM, warren.je...@stfc.ac.uk wrote:
Hi All,
Having a few problems removing cephfs file systems.
I want to remove my current pools (was used for test data) – wiping
all current data, and start a fresh file system on my current cluster.
I have looked over the documentation but I can’t find anything on
this. I have an object store pool, Which I don’t want to remove – but
I’d like to remove the cephfs file system pools and remake them.
My cephfs is called ‘data’.
Running ceph fs delete data returns: Error EINVAL: all MDS daemons
must be inactive before removing filesystem
To make an MDS inactive I believe the command is: ceph mds deactivate
0
Which returns: telling mds.0 135.248.53.134:6809/16692 to deactivate
Checking the status of the mds using: ceph mds stat returns: e105:
1/1/0 up {0=node2=up:stopping}
This has been sitting at this status for the whole weekend with no
change. I don’t have any clients connected currently.
When trying to manually just remove the pools, it’s not allowed as
there is a cephfs file system on them.
I’m happy that all of the failsafe’s to stop someone removing a pool
are all working correctly.
If this is currently undoable. Is there a way to quickly wipe a cephfs
filesystem – using RM from a kernel client is really slow.
Many thanks
Warren Jeffs
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[ceph-users] CephFS removal.
Hi All,
Having a few problems removing cephfs file systems.
I want to remove my current pools (was used for test data) - wiping all current
data, and start a fresh file system on my current cluster.
I have looked over the documentation but I can't find anything on this. I have
an object store pool, Which I don't want to remove - but I'd like to remove the
cephfs file system pools and remake them.
My cephfs is called 'data'.
Running ceph fs delete data returns: Error EINVAL: all MDS daemons must be
inactive before removing filesystem
To make an MDS inactive I believe the command is: ceph mds deactivate 0
Which returns: telling mds.0 135.248.53.134:6809/16692 to deactivate
Checking the status of the mds using: ceph mds stat returns: e105: 1/1/0 up
{0=node2=up:stopping}
This has been sitting at this status for the whole weekend with no change. I
don't have any clients connected currently.
When trying to manually just remove the pools, it's not allowed as there is a
cephfs file system on them.
I'm happy that all of the failsafe's to stop someone removing a pool are all
working correctly.
If this is currently undoable. Is there a way to quickly wipe a cephfs
filesystem - using RM from a kernel client is really slow.
Many thanks
Warren Jeffs
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Re: [ceph-users] CephFS removal.
Oh, hah, your initial email had a very delayed message
delivery...probably got stuck in the moderation queue. :)
On Thu, Feb 12, 2015 at 8:26 AM, warren.je...@stfc.ac.uk wrote:
I am running 0.87, In the end I just wiped the cluster and started again - it
was quicker.
Warren
-Original Message-
From: Gregory Farnum [mailto:g...@gregs42.com]
Sent: 12 February 2015 16:25
To: Jeffs, Warren (STFC,RAL,ISIS)
Cc: ceph-users@lists.ceph.com
Subject: Re: [ceph-users] CephFS removal.
What version of Ceph are you running? It's varied by a bit.
But I think you want to just turn off the MDS and run the fail
command — deactivate is actually the command for removing a logical MDS from
the cluster, and you can't do that for a lone MDS because there's nobody to
pass off the data to. I'll make a ticket to clarify this. When you've done
that you should be able to delete it.
-Greg
On Mon, Feb 2, 2015 at 1:40 AM, warren.je...@stfc.ac.uk wrote:
Hi All,
Having a few problems removing cephfs file systems.
I want to remove my current pools (was used for test data) – wiping
all current data, and start a fresh file system on my current cluster.
I have looked over the documentation but I can’t find anything on
this. I have an object store pool, Which I don’t want to remove – but
I’d like to remove the cephfs file system pools and remake them.
My cephfs is called ‘data’.
Running ceph fs delete data returns: Error EINVAL: all MDS daemons
must be inactive before removing filesystem
To make an MDS inactive I believe the command is: ceph mds deactivate
0
Which returns: telling mds.0 135.248.53.134:6809/16692 to deactivate
Checking the status of the mds using: ceph mds stat returns: e105:
1/1/0 up {0=node2=up:stopping}
This has been sitting at this status for the whole weekend with no
change. I don’t have any clients connected currently.
When trying to manually just remove the pools, it’s not allowed as
there is a cephfs file system on them.
I’m happy that all of the failsafe’s to stop someone removing a pool
are all working correctly.
If this is currently undoable. Is there a way to quickly wipe a cephfs
filesystem – using RM from a kernel client is really slow.
Many thanks
Warren Jeffs
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