Hi!

I found no way to rename the bucket. Neither s3cmd nor radosgw-admin offer a 
renaming option (even Amazon S3 does not support renaming).

Deleting the objects did not work:

# s3cmd rb s3://bucket -r
WARNING: Bucket is not empty. Removing all the objects from it first. This may 
take some time...
WARNING: Remote list is empty.
ERROR: S3 error: 409 (BucketNotEmpty)

Listing it shows it as empty, but in the backend, there are still objects, they 
are just not visible to S3 clients.
The garbage collection is already listed as empty.

Regards,

Martin

Von: David Turner <drakonst...@gmail.com>
Datum: Freitag, 8. Dezember 2017 um 15:19
An: Martin Emrich <martin.emr...@empolis.com>
Cc: ceph-users <ceph-users@lists.ceph.com>
Betreff: Re: [ceph-users] How to remove a faulty bucket? [WAS:Re: Resharding 
issues / How long does it take?]

First off, you can rename a bucket and create a new one for the application to 
use. You can also unlink the bucket so it is no longer owned by the 
access-key/user that created it. That should get your application back on its 
feet.
I have had very little success with bypass-gc, although I think it would be a 
wonderful feature of it worked. After you move the bucket to a different name, 
you could try a multi-threaded python script to delete all of the objects in 
the bucket and then removed the bucket... Maybe. I had a bucket that still 
didn't remove after doing that after it failed to delete with bypass-gc and 
such. At that point though, it took up little enough space that I could ignore 
it myself. Watch your GC queue, though, and make sure it's going down.

On Fri, Dec 8, 2017, 6:00 AM Martin Emrich <mailto:martin.emr...@empolis.com> 
wrote:
Followup:

I eventually gave up trying to salvage the bucket. The bucket is supposed to 
have ca. 110000 objects, every attempt to "bucket index check --fix" increased 
that number by 110000, so something is very wrong.
Also, deleting the bucket with "radosgw bucket rm --purge-objects" failed with 
a "no such file or directory" error.

Even the biggest shovel I found could not remove the bucket:

# radosgw-admin bucket rm --bucket=XXXX --purge-objects --inconsistent-index 
--yes-i-really-mean-it --bypass-gc
2017-12-08 11:56:15.020617 7f799c326c40 -1 ERROR: could not drain handles as 
aio completion returned with -2
2017-12-08 11:56:16.879316 7f799c326c40 -1 ERROR: unable to remove bucket(2) No 
such file or directory

As the application relies on the bucket name, which is now occupied by this 
mystery bucket, I seem to be stuck. How can I remove this bucket?

Thanks

Martin

Am 07.12.17, 16:05 schrieb "ceph-users im Auftrag von Martin Emrich" 
<mailto:ceph-users-boun...@lists.ceph.com im Auftrag von 
mailto:martin.emr...@empolis.com>:

    Hi all!

    Apparently, one of my buckets went wonko during automatic resharding, the 
frontend application only gehts a timeout after 90s.
    After an attempt to fix the index using “radosgw-admin bucket check –fix”, 
I tried to reshard id (6,3GB of data in ca. 230000 objects).

    The resharding command is now running for over an hour. No significant load 
on any of the 18 OSDs, the host running radosgw-admin or on one of the three 
radosgw hosts. The OSDs are beefy machines with HDDs for Data and SSDs for 
index pools. Running 12.2.2.
    How long should the resharding take? For a few minutes, radosgw-admin seems 
quite busy, but now it seems to only sit there at only a few % of CPU usage.

    “radosgw-admin reshard list” reports an empty list. Reshard status reports

    [
        {
            "reshard_status": 1,
            "new_bucket_instance_id": 
"c2ffcb0f-a9a3-4360-a9be-5edef965449a.6860125.1",
            "num_shards": 10
        }
    ]

    I have a feeling that the bucket index is still 
damaged/incomplete/inconsistent. What does the message

    *** NOTICE: operation will not remove old bucket index objects ***
    ***         these will need to be removed manually             ***

    mean? How can I clean up manually?

    Thanks,

    Martin


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