hello, have looked a while for any changes and issues existing to this already, but did not found any. which is hopefully correct. This is Linux gonzales 4.18.0-gentoo #3 SMP PREEMPT Wed Aug 15 15:33:45 CEST 2018 armv7l ARMv7 Processor rev 3 (v7l) SAMSUNG EXYNOS (Flattened Device Tree) GNU/Linux PATCH V2 12/12 (2017-12-08 10:59:57 -050) introduced _check_data_dev_sectors in raid.c
Calculation in there uses to_sector(unsigned long n) of a sector_t value, which is a u64 in case CONFIG_LBDAF is enabled. At a 32bit system, this results in a wrong value and the intended check fails, which is expected to be wrong. See example values at a used system (arm 32bit, 2TB raid1) below. I might be wrong, if there is, may you please provide a hint to me how to proceed here? Currently, there's no perfect patch available here, as i admit ijust started investigating the source due to this behavior. Thanks a lot & regards, Jörg the said example, the outputs i'd added [ 49.004135] device-mapper: raid: _check_data_dev_sectors [ 49.004149] device-mapper: raid: sizeof(sector_t) 8 [ 49.004161] device-mapper: raid: sizeof(unsigned long) 4 [ 49.004206] device-mapper: raid: md.dev_sectors 1809793024, that is 926614028288 bytes [ 49.004242] device-mapper: raid: rdev->sectors 1809793024, that is 926614028288 bytes [ 49.004317] device-mapper: raid: i_size_read(rdev->bdev->bd_inode) returns 926614028288 [ 49.004327] device-mapper: raid: i_size_read(rdev->bdev->bd_inode) >> 9 is 1809793024 [ 49.004337] device-mapper: raid: to_sector(i_size_read(rdev->bdev->bd_inode)) returns 6242304 [ 49.004346] device-mapper: raid: ds is 6242304 [ 49.004356] device-mapper: raid: Error -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
