Hi On Fri, Aug 21, 2015 at 10:37 PM, Anatol Pomozov <anatol.pomozov@xxxxxxxxx> wrote: > Discs are from different batches and I was a bit surprised to see > identical failures at the same time. I was ready send the drives to > RMA but then I discovered this thread > https://bbs.archlinux.org/viewtopic.php?id=199351 A lot of people > report the same problem as mine. It was found that the problem appears > only starting from 3.19, with kernel 3.18 or Windows these drives work > fine. It is recommended to revert this change > 9162c6579bf90b3f5ddb7e3a6c6fa946c1b4cbeb "libata: Implement > ATA_DEV_ZAC" that seems fixes the issue. I looked at this commit and it actually adds SMR support to SCSI layer. Reverting ATA_DEV_ZAC means going back to zones-unaware algorithms. It is suboptimal but still much better than IO failures and "BTRFS: lost page write due to I/O error on /dev/sdc" errors I see at my computer. If this SMR support is considered as non-stable, can we at least get a kernel boot (or config) option that disables ZAC? -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
