Hi Chris, Those objects are in the so called "ugly namespace" of the rgw, used to prefix special bucket index entries. // No UTF-8 character can begin with 0x80, so this is a safe indicator // of a special bucket-index entry for the first byte. Note: although // it has no impact, the 2nd, 3rd, or 4th byte of a UTF-8 character // may be 0x80. #define BI_PREFIX_CHAR 0x80 You can use --omap-key-file and some sed magic to interact with those keys, e.g. like this example from my archives [1]. (In my example I needed to remove orphaned olh entries -- in your case you can generate uglykeys.txt in whichever way is meaningful for your situation.) BTW, to be clear, I'm not suggesting you blindly delete those keys. You would need to confirm that they are not needed by a current bucket instance before deleting, lest some index get corrupted. Cheers, Dan ______________________________________________________ Clyso GmbH | Ceph Support and Consulting | https://www.clyso.com [1] # radosgw-admin bi list --bucket=xxx --shard-id=0 > xxx.bilist.0 # cat xxx.bilist.0 | jq -r '.[]|select(.type=="olh" and .entry.key.name=="") | .idx' > uglykeys.txt # head -n2 uglykeys.txt �1001_00/2a/002a985cc73a01ce738da460b990e9b2fa849eb4411efb0a4598876c2859d444/2018_12_11/2893439/3390300/metadata.gz �1001_02/5f/025f8e0fc8234530d6ae7302adf682509f0f7fb68666391122e16d00bd7107e3/2018_11_14/2625203/3034777/metadata.gz # cat do_remove.sh # usage: "bash do_remove.sh | sh -x" while read f; do echo -n $f | sed 's/^.1001_/echo -n -e \\\\x801001_/'; echo ' > mykey && rados rmomapkey -p default.rgw.buckets.index .dir.zone.bucketid.xx.indexshardnumber --omap-key-file mykey'; done < uglykeys.txt On Tue, Jul 18, 2023 at 9:27 AM Christopher Durham <caduceus42@xxxxxxx> wrote: > Hi, > I am using ceph 17.2.6 on rocky linux 8. > I got a large omap object warning today. > Ok, So I tracked it down to a shard for a bucket in the index pool of an > s3 pool. > > However, when lisitng the omapkeys with: > # rados -p pool.index listomapkeys .dir.zone.bucketid.xx.indexshardnumber > it is clear that the problem is caused by many omapkeys with the following > name format: > > <80>0_00004771163.3444695458.6 > A hex dump of the output of the listomapkeys command above indicates that > the first 'character' is indeed hex 80, but as there is no equivalent ascii > for hex 80, I am not sure how to 'get at' those keys to see the values, > delete them, etc. The index keys not of the format above appear to be fine, > indicating s3 object names as expected. > > The rest of the index shards for the bucket are reasonable and have less > than osd_deep_scrub_large_omap_object_key_threshold index objects , and > the overall total of objects in the bucket is way less than > osd_deep_scrub_large_omap_object_key_threshold*num_shards. > > These weird objects seem to be created occasionally.........????? Yes, the > bucket is used heavily. > > Any advice here? > -Chris > > > > > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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