Hi All ok first problem (with mpu's) solved. '--omap-key-file file' is doing the trick: cat -A key.bin _multipart_MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_DiskImage/Disk_4f8130ff-fef5-4b0f-b25e-c6b8b3dba9bf/Volume_NTFS_5b4f5274-9107-4386-93d9-e7f31193805a$/20201218230243/0.cbrevision.525Sr39KY5yVbD_w9ipOXSXsQ95YUnC^@.25 rados -p zh-1.rgw.buckets.index rmomapkey .dir.cb1594b3-a782-49d0-a19f-68cd48870a63.81880353.1.0 --omap-key-file key.bin cf. also: https://tracker.ceph.com/issues/49018 https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/message/MQICUW7GAC… Now I am still asking for help to get rid of the nucll characters in rgw object etags... Do you know if following commands may help and are safe in multi-site? * radosgw-admin bucket check --bucket $bucket --fix --check-objects * radosgw-admin bucket rewrite --bucket $bucket --min-rewrite-size 0 Cheers Francois -- EveryWare AG François Scheurer Senior Systems Engineer Zurlindenstrasse 52a CH-8003 Zürich tel: +41 44 466 60 00 fax: +41 44 466 60 10 mail: francois.scheurer(a)everyware.ch web: http://www.everyware.ch ________________________________ From: Scheurer François Sent: Thursday, May 13, 2021 2:36 PM To: ceph-users(a)ceph.io Subject: Re: rgw bug adding null characters in multipart object names and in Etags Hi All listomapkeys is actually dealing correctly with the null chars and output them. rmomapkey is not, but rados has a new option that should help: --omap-key-file file Read the omap key from a file. Testing that... Cheers Francois -- EveryWare AG François Scheurer Senior Systems Engineer Zurlindenstrasse 52a CH-8003 Zürich tel: +41 44 466 60 00 fax: +41 44 466 60 10 mail: francois.scheurer(a)everyware.ch web: http://www.everyware.ch ________________________________ From: Scheurer François &lt;francois.scheurer(a)everyware.ch&gt; Sent: Thursday, May 13, 2021 12:09:12 PM To: ceph-users(a)ceph.io Subject: [ceph-users] Re: rgw bug adding null characters in multipart object names and in Etags Hi All This trackers seems to be the one regarding the null characters in multipart object names: https://tracker.ceph.com/issues/48874 So it is apparently fixed in 14.2.17, but how to remove invalid omap keys that were added previously? The 'rados' command is not converting \0 or \\0 in null chars . Is there another way to edit the omap keys? Will some one enhance the 'rados' command for this? Cheers Francois -- EveryWare AG François Scheurer Senior Systems Engineer Zurlindenstrasse 52a CH-8003 Zürich tel: +41 44 466 60 00 fax: +41 44 466 60 10 mail: francois.scheurer(a)everyware.ch web: http://www.everyware.ch ________________________________ From: Scheurer François &lt;francois.scheurer(a)everyware.ch&gt; Sent: Saturday, May 8, 2021 12:09:14 PM To: ceph-users(a)ceph.io Subject: [ceph-users] rgw bug adding null characters in multipart object names and in Etags Dear All We are trying to remove old multipart uploads but get in trouble with some of them having null characters: rados -p zh-1.rgw.buckets.index rmomapkey .dir.cb1594b3-a782-49d0-a19f-68cd48870a63.81880353.1.0 '_multipart_MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_DiskImage/Disk_4f8130ff-fef5-4b0f-b25e-c6b8b3dba9bf/Volume_NTFS_5b4f5274-9107-4386-93d9-e7f31193805a$/20201218230243/0.cbrevision.525Sr39KY5yVbD_w9ipOXSXsQ95YUnC.25' rados -p zh-1.rgw.buckets.index rmomapkey .dir.cb1594b3-a782-49d0-a19f-68cd48870a63.81880353.1.0 $(echo -ne '_multipart_MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_DiskImage/Disk_4f8130ff-fef5-4b0f-b25e-c6b8b3dba9bf/Volume_NTFS_5b4f5274-9107-4386-93d9-e7f31193805a$/20201218230243/0.cbrevision.525Sr39KY5yVbD_w9ipOXSXsQ95YUnC\0.25') -bash: warning: command substitution: ignored null byte in input rados -p zh-1.rgw.buckets.index listomapkeys .dir.cb1594b3-a782-49d0-a19f-68cd48870a63.81880353.1.0 | grep -a '_multipart_MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_DiskImage/Disk_4f8130ff-fef5-4b0f-b25e-c6b8b3dba9bf/Volume_NTFS_5b4f5274-9107-4386-93d9-e7f31193805a$/20201218230243/0.cbrevision.525Sr39KY5yVbD_w9ipOXSXsQ95YUnC' | cat -A _multipart_MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_DiskImage/Disk_4f8130ff-fef5-4b0f-b25e-c6b8b3dba9bf/Volume_NTFS_5b4f5274-9107-4386-93d9-e7f31193805a$/20201218230243/0.cbrevision.525Sr39KY5yVbD_w9ipOXSXsQ95YUnC^@.25$ # <= not deleted ! It is not working, as the Null Char is stripped off. Any Idea how to proceed? This bucket was created on luminous. But this specific object was created after our upgrade to nautilus. Apparently some bugs have added NullChars at the end of MPU object names, between uploadid and suffix. Output from 'radosgw-admin bi list' (see the \u0000 NullChars): { "type": "plain", "idx": "_multipart_MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_DiskImage/Disk_4f8130ff-fef5-4b0f-b25e-c6b8b3dba9bf/Volume_NTFS_5b4f5274-9107-4386-93d9-e7f31193805a$/20201218230243/0.cbrevision.525Sr39KY5yVbD_w9ipOXSXsQ95YUnC\u0000.25", "entry": { "name": "_multipart_MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_DiskImage/Disk_4f8130ff-fef5-4b0f-b25e-c6b8b3dba9bf/Volume_NTFS_5b4f5274-9107-4386-93d9-e7f31193805a$/20201218230243/0.cbrevision.525Sr39KY5yVbD_w9ipOXSXsQ95YUnC\u0000.25", "instance": "", "ver": { "pool": 6, "epoch": 852938 }, "locator": "", "exists": "true", "meta": { "category": 1, "size": 157286400, "mtime": "2020-12-25 23:39:20.019898Z", "etag": "a126c2f0d439c44176a5d07bd5841575", "storage_class": "", "owner": "40eb21a9092c4948bcf94386f6042f94", "owner_display_name": "amsler1", "content_type": "", "accounted_size": 157286400, "user_data": "", "appendable": "false" }, "tag": "_vMx_4vu-E5nWf7kCHJIQCFPGEHRiUAG", "flags": 0, "pending_map": [], "versioned_epoch": 0 } }, On the same bucket, we also see NullChars at the end of some Etags when we using 'radosgw-admin bucket list --bucket' but not with 'radosgw-admin object stat': object='MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_HV/BSSRV01.Aerztehaus-allschwil.ch/BSSRV05/D0F970B6-DB86-48AF-AA68-946D4642E2A6.xml:/20191103183115/D0F970B6-DB86-48AF-AA68-946D4642E2A6.xml' radosgw-admin object stat --bucket="$bucket" --object="$object" | jq -c '{name, size, etag, tag, obj_size: .manifest.obj_size, marker:.manifest.tail_placement.bucket.marker, bucket_id:.manifest.tail_placement.bucket.bucket_id}' | cat -A {"name":"MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_HV/BSSRV01.Aerztehaus-allschwil.ch/BSSRV05/D0F970B6-DB86-48AF-AA68-946D4642E2A6.xml:/20191103183115/D0F970B6-DB86-48AF-AA68-946D4642E2A6.xml","size":39372,"etag":"0e73d594032900acb74d3f06b230aeb9","tag":"_xhNKxuWrfxDO5XfYs8Llq8vLTUYqtmm","obj_size":39372,"marker":"cb1594b3-a782-49d0-a19f-68cd48870a63.19334234.139","bucket_id":"cb1594b3-a782-49d0-a19f-68cd48870a63.20382694.169"}$ # <= no NullChar radosgw-admin bucket list --bucket "${bucket}" --allow-unordered --max-entries 20000000 | jq -c 'sort_by(.bucket) | .[] | {name, accounted_size: .meta.accounted_size, etag: .meta.etag}' | fgrep -a 0e73d594032900acb74d3f06b230aeb9 | cat -A {"name":"MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_HV/BSSRV01.Aerztehaus-allschwil.ch/BSSRV05/D0F970B6-DB86-48AF-AA68-946D4642E2A6.xml:/20191103183115/D0F970B6-DB86-48AF-AA68-946D4642E2A6.xml","accounted_size":39372,"etag":"0e73d594032900acb74d3f06b230aeb9\u0000"}$ # <= no NullChar rados -p zh-1.rgw.buckets.data stat 'cb1594b3-a782-49d0-a19f-68cd48870a63.19334234.139_'"$object" zh-1.rgw.buckets.data/cb1594b3-a782-49d0-a19f-68cd48870a63.19334234.139_MBS-35a9b79c-f27d-44f2-804f-472ef0520816/CBB_BSSRV01/CBB_HV/BSSRV01.Aerztehaus-allschwil.ch/BSSRV05/D0F970B6-DB86-48AF-AA68-946D4642E2A6.xml:/20191103183115/D0F970B6-DB86-48AF-AA68-946D4642E2A6.xml mtime 2020-04-21 14:21:27.000000, size 39372 This bucket was causing multi-site rgw sync to crash every minute when using rgw_sync_obj_etag_verify = true. These Etag NullChars may be the cause of this bug: * https://tracker.ceph.com/issues/49955 It may also be related to: * https://tracker.ceph.com/issues/23939 So we would be glad to know how to remove these NullChars from the Etags and how to remove the MPU's with NullChars in the object names... These both issues seem to be the cause of many weird behaviors: 1. rgw sync crashes (with rgw_sync_obj_etag_verify = true) 2. radosgw-admin bucket sync status --bucket "$bucket" --source-zone ch-zh1-az2 => reports "bucket is caught up with source" but when most of the objects are missing 3. radosgw-admin bucket list --bucket "$bucket" --allow-unordered --max-entries 99000000 => returns an imcomplete list 4. radosgw-admin bucket stats --bucket "$bucket" => returns wrong number of objects and utilized size The only reliable outputs is from bi list: * radosgw-admin bi list --bucket=$bucket | jq -cr 'map(select(.type == "plain" or .type == "instance") | .entry' Do you know if following commands may help and are safe in multi-site? * radosgw-admin bucket check --bucket $bucket --fix --check-objects * radosgw-admin bucket rewrite --bucket $bucket --min-rewrite-size 0 Or maybe only a dedicated tool need to be developped to deal with these NullChars? Many thanks in advance. Cheers Francois Scheurer -- EveryWare AG François Scheurer Senior Systems Engineer Zurlindenstrasse 52a CH-8003 Zürich tel: +41 44 466 60 00 fax: +41 44 466 60 10 mail: francois.scheurer(a)everyware.ch web: http://www.everyware.ch