On Thu, Jan 03, 2019 at 11:52:05AM +0900, Tomasz Chmielewski wrote: > Did you use 4.19.x kernels earlier than 4.19.8? > > They had a bug which would corrupt filesystems (mostly ext4 users would be > reporting it, but I saw it with other filesystems, like xfs and btrfs, too): Well, just for the record, it triggers when you have scsi devices using elevator=none over blkmq. And it's not a default/usual configuration. So, b11g, can you check please if the NixOS kernel is compiled with these flags? And/or if they have something like: scsi_mod.use_blk_mq=1 in the boot command line? Ciao, Gelma
