Continuous Checksum errors on pool

[jannisberry]

Hi,
for some time i have a continuous stream of 4 checksum errors every 5 Seconds on my Pool and i can not figure out what it may be causing, can anyone help me maybe finding something that may be causing this? What i have tried is looking into zpool status obv. but there i get a
errors: List of errors unavailable: no such pool or dataset
but when looking into the mountable objects everything is mounted. I looked into zpool events too and every entry looks like this

 Mar 10 2025 17:14:12.364994305 ereport.fs.zfs.data
        class = "ereport.fs.zfs.data"
        ena = 0x5344258197f00c01
        detector = (embedded nvlist)
                version = 0x0
                scheme = "zfs"
                pool = 0x9ae3dd4c86c5e20a
        (end detector)
        pool = "BigData"
        pool_guid = 0x9ae3dd4c86c5e20a
        pool_state = 0x0
        pool_context = 0x0
        pool_failmode = "continue"
        zio_err = 0x34
        zio_flags = 0x808081 [DONT_AGGREGATE CANFAIL IO_RETRY RAW_COMPRESS]
        zio_stage = 0x2000000 [DONE]
        zio_pipeline = 0x2100000 [READY DONE]
        zio_delay = 0x0
        zio_timestamp = 0x0
        zio_delta = 0x0
        zio_priority = 0x2 [ASYNC_READ]
        zio_objset = 0xffffffffffffffff
        zio_object = 0x184
        zio_level = 0x1
        zio_blkid = 0x0
        time = 0x67cf0fd4 0x15c15f01 
        eid = 0x56abf

I cant really decypher this.

Any help is appreciated. Just fyi all drives are tested good (even badblocks), i swapped the power supply so all voltages are good and stable, i swapped the data cables around and used different ones as well and tried different ports on my HBA, but to no avail yet so i would exclude any hardware issue for now.