I have this zfs pool which seems to be full because of some reservations
# zpool get all data2NAME PROPERTY VALUE SOURCEdata2 size 128T -data2 capacity 68% -data2 free 40.9T -data2 allocated 87.1T -# zfs get all data2NAME PROPERTY VALUE SOURCEdata2 used 97.1T -data2 available 0B -data2 referenced 238K -data2 usedbysnapshots 238K -data2 usedbydataset 238K -data2 usedbychildren 97.1T -data2 usedbyrefreservation 0B -data2 written 18.3K -data2 logicalused 65.9T -data2 logicalreferenced 46K -It contains a lot of datasets among them I have two datasets, A and B, which are empty, with 3 snapshots, also empty.
# zfs get all data2/groups/ANAME PROPERTY VALUE SOURCEdata2/groups/A used 100G -data2/groups/A available 100G -data2/groups/A referenced 219K -data2/groups/A reservation none localdata2/groups/A refreservation 100G localdata2/groups/A usedbysnapshots 402K -data2/groups/A usedbydataset 219K -data2/groups/A usedbychildren 0B -data2/groups/A usedbyrefreservation 100G -data2/groups/A written 128K -data2/groups/A logicalused 128K -data2/groups/A logicalreferenced 42K -# zfs get all data2/logins/BNAME PROPERTY VALUE SOURCEdata2/logins/B used 512K -data2/logins/B available 1024G -data2/logins/B referenced 219K -data2/logins/B reservation 1T localdata2/logins/B refreservation none defaultdata2/logins/B usedbysnapshots 292K -data2/logins/B usedbydataset 219K -data2/logins/B usedbychildren 0B -data2/logins/B usedbyrefreservation 0B -data2/logins/B written 146K -data2/logins/B logicalused 102K -data2/logins/B logicalreferenced 42K -My problem is that I cannot remove anything to make some free space
# zfs destroy data2/groups/A@yesterdayinternal error: cannot destroy snapshots: Channel number out of rangeAborted (core dumped)# zfs set refreservation=none data2/groups/Acannot set property for 'data2/groups/A': size is greater than available space# zfs destroy data2/groups/B@yesterdayinternal error: cannot destroy snapshots: Channel number out of rangeAborted (core dumped)# zfs set reservation=none data2/logins/Bcannot set property for 'data2/logins/B': size is greater than available spaceIt seems related to https://github.com/openzfs/zfs/issues/9849, setting spa_slop_shift to 6 did not help.
If any of you have an idea that does not involve moving 100T from a dataset to another (that I don't have) I would be very happy.
# uname -aLinux stockage 4.18.0-513.24.1.el8_9.x86_64 #1 SMP Thu Mar 14 14:20:09 EDT 2024 x86_64 x86_64 x86_64 GNU/Linux# modinfo zfs | grep -iw versionversion: 2.1.15-1