[ceph-users] CephFS Snaptrim stuck?

Dear Ceph Users, We are experiencing a strange behaviour on Ceph v15.2.9 that a set of PGs seem to be stuck in active + clean + snaptrim state. (for almost a day now) Usually snaptrim is quite fast (done in a few minutes), however now in the osd logs we see slowly increasing trimq numbers, with such entries coming constantly (every few seconds): 2021-05-16T13:58:28.795+0000 7fc668f2e700 -1 osd.9 pg_epoch: 91137 pg[2.39( v 91137'1584600 (91059'1581379,91137'1584600] local-lis/les=91119/91120 n=115714 ec=165/115 lis/c=91119/91119 les/c/f=91120/91120/0 sis=91119) [9,10,3] r=0 lpr=91119 luod=91137'1584598 crt=91137'1584600 lcod 91137'1584597 mlcod 91137'1584597 active+clean+snaptrim* trimq=82* ps=[75fe~1,7600~1,868a~1,8caa~1,a30c~1,a422~1,a65e~1,c0cf~1,c569~1]] removing snap head We tried restarting the OSD-s, but no difference. Otherwise the cluster reports itself as being healthy. If anyone has any ideas what might be causing this and how to get these PGs finished with the snaptrim state, that would be very much appreciated. Kind regards, András Sali