Ivan Volosyuk

Actually, I don't know, might be a different unrelated problem. I think I identified the file in question and it seem pretty short lived (already overwritten after reboot) and can...

I don't know what happened with the data corruption, but I restored from backup and everything was working fine for a while until I was trying to do another data...

zfs_arc_min=8G zfs_arc_max=100G zfs.l2arc_noprefetch=0 zfs_txg_timeout=120 spl.spl_taskq_thread_bind=0 spl.spl_taskq_thread_priority=0 zfs.l2arc_rebuild_blocks_min_l2size=1 zfs.zfs_dmu_offset_next_sync=0 zfs.zfs_bclone_enabled=0 zfs.zfs_dio_enabled=0 zfs.zfs_bclone_wait_dirty=0 $ zfs get all ssd/home ``` NAME PROPERTY VALUE SOURCE ssd/home type filesystem - ssd/home creation Thu Oct 16...

Example of verbose output of zstreamdump -v 1. ``` FREE object = 295739 offset = 18446744073709551104 length = 511 OBJECT object = 295740 type = 19 bonustype = 44 blksz...

Looks like offset randomly becomes 0xfffffffffffe0000 (18446744073709420544) or -131072 (-128k): WRITE object = 295740 type = 19 checksum type = 2 compression type = 0 flags = 0 offset =...

Looks like data corruption indeed: ``` $ cat minecraft/server-irina/world/region/r.-1.-4.mca Segmentation fault dmesg: [ 114.915734] usercopy: Kernel memory exposure attempt detected from SLUB object 'zio_data_buf_512' (offset 0, size 74080)! [ 114.915752]...

rsync'd data out and destroyed the bad dataset tripping on assert which made the pool only importable only in readonly: ``` VERIFY0(ba.ba_phys->bt_uncomp) failed (130048) PANIC at bptree.c:298:bptree_iterate() Showing stack for...

Interestingly, another dataset * I can succesfully rsync data out * zstreamdump doesn't find any errors * But it trips on receive I'll try to disable rand struct kernel hardening...

Cannot receive from any dataset where large blocks was used without tripping on the assertion. I'm rsync-ing my way out and starting all over from clean snapshots without larger blocks....

You have quite similar idea of what I had. How can everything be that broken, must be something with my system, but how come: - scrubs are completely clean? -...