Hi Chris, After booting the fedora usb stick (running rc2), I got the same results.
On Mon, 1 Apr 2019 at 08:35, Chris Murphy <li...@colorremedies.com> wrote: > > On Sat, Mar 30, 2019 at 5:43 PM Glenn Trigg <ggtr...@gmail.com> wrote: ... > > I'm confused because "can't read superblock" isn't found in fs/btrfs. > I'm only finding it in fs/gfs2/ops_fstype.c > > From what you provided, /dev/sda1 definitely has a valid btrfs > superblock. I wonder if there's some other stale something or other on > this partition? > > What do you get for > > $ sudo blkid /dev/sda1: LABEL="data" UUID="d5e50511-3e31-4de6-ba37-c5841895be9f" UUID_SUB="a28b0f34-f14d-492b-995b-2dd8a78ec9bb" TYPE="btrfs" PARTUUID="efa240ec-01" /dev/sdc1: LABEL="data" UUID="d5e50511-3e31-4de6-ba37-c5841895be9f" UUID_SUB="d9c56d7a-21a1-4197-a701-5493392e1ae1" TYPE="btrfs" PARTUUID="1aae1443-c03e-4509-ad06-124a64c4df4f" > $ sudo wipefs -an /dev/sda1 /dev/sdc1 /dev/sda1: 8 bytes were erased at offset 0x00010040 (btrfs): 5f 42 48 52 66 53 5f 4d /dev/sdc1: 8 bytes were erased at offset 0x00010040 (btrfs): 5f 42 48 52 66 53 5f 4d > $ sudo mount -v -o ro,nologreplay,usebackuproot mount: /data: can't read superblock on /dev/sda1. and in dmesg... [ 1045.029981] BTRFS info (device sda1): use lzo compression, level 0 [ 1045.029987] BTRFS info (device sda1): disabling log replay at mount time [ 1045.029991] BTRFS info (device sda1): trying to use backup root at mount time [ 1045.029992] BTRFS info (device sda1): disk space caching is enabled [ 1045.029994] BTRFS info (device sda1): has skinny extents [ 1045.127375] BTRFS info (device sda1): bdev /dev/sda1 errs: wr 0, rd 0, flush 0, corrupt 1, gen 0 [ 1045.127381] BTRFS info (device sda1): bdev /dev/sdc1 errs: wr 0, rd 0, flush 0, corrupt 4, gen 0 [ 1045.154198] BTRFS error (device sda1): parent transid verify failed on 628168376320 wanted 37601 found 37712 [ 1045.178310] BTRFS error (device sda1): parent transid verify failed on 628168376320 wanted 37601 found 37712 I.e. the same as before. It's puzzling! Regards, Glenn > > -- > Chris Murphy
