Am 22.11.2017 um 22:10 schrieb Michael Lyle: > On 11/22/2017 01:07 PM, Stefan Priebe - Profihost AG wrote: >> default debian jessie version: >> # blkid -v >> blkid from util-linux 2.25.2 (libblkid 2.25.0, 24-Oct-2014) > > OK, so it's ancient. > > One other thing that can get you-- if there was ever an xfs or other > filesystem on this disk -without- bcache, then you created bcache & xfs > on it without wipefs... the old superblock can still be hanging around > and not having happened to been rewritten. no there shouldn't eb ever an xfs without it on disk - but i can't guarantee that. To reproduce the isue you need the first 10MB of the disk. See below: Still ok: # dd if=/dev/sdf1 of=/tmp/8k bs=8M count=1 1+0 records in 1+0 records out 8388608 bytes (8,4 MB) copied, 0,01318 s, 636 MB/s # /sbin/blkid -o udev -p /tmp/8k ID_FS_UUID=65811163-4ffc-4823-ad72-bae10ce85b63 ID_FS_UUID_ENC=65811163-4ffc-4823-ad72-bae10ce85b63 ID_FS_TYPE=bcache ID_FS_USAGE=other not anymore: # dd if=/dev/sdf1 of=/tmp/8k bs=10M count=1 1+0 records in 1+0 records out 10485760 bytes (10 MB) copied, 0,0115798 s, 906 MB/s # /sbin/blkid -o udev -p /tmp/8k ID_FS_AMBIVALENT=other:bcache other:xfs_external_log Stefan > > Mike > >> >>> >>> Mike >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-bcache" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-bcache" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
