On 3/14/19 5:21 PM, Hans van Kranenburg wrote: > On 3/14/19 5:17 PM, Michal Soltys wrote: >> On 3/14/19 5:09 PM, Michal Soltys wrote: >>> On 3/14/19 4:57 PM, Hans van Kranenburg wrote: >>>> On 3/14/19 4:44 PM, Michal Soltys wrote: >>>>> >>>>> <cut> >>>>> >>>>> Occasionally, during reboots (all of them clean of course) I get: >>>>> >>>>> devid 2 uuid <uuid> is missing >>>>> failed to ready system array: -2 >>>>> open_ctree faield >>>>> >>>>> Which drops me into initramfs commandline. >>>> >>>> It might try to mount before all disks are visible. This can happen when >>>> e.g. a raid controller needs a little bit more time to initialize. >>>> >>>> Try adding rootdelay=10 to your linux command line, or any other number, >>>> and then look at logging when booting (so no quiet on your linux command >>>> line). >>>> >>> >>> It remains unmountable from initramfs's commandline with both disks >>> (partitions) present. Filesystem is mounted formally via uuid, so it >>> needs both disks present before udev/blkid can pick the correct devices. > > When using UUID in fstab/initramfs, all btrfs devices show up having the > same UUID, so if any of them is present, it can try mounting. > >> E.g. >> >> mount /dev/sdr2 /newroot -> fails > > Are you typing this manually? And what's the error? Does it complain > about the devid of sds2? Yes. Output captured via serial console (debug level) below. > >> mount /dev/sds2 /newroot -> ok > > While doing this you trigger the system to have a look, and at that > moment it will suddenly discover the disk, and now it sees them both and > it mounts... > >> umount /newroot >> mount /dev/sdr2 /newroot -> ok > > ...even when using sdr2, because when doing the things above all disks > got discovered. > > It's of course possible you have another problem.My suggestion was just > a been-there-done-that. But, in that case posting more logging might help. > [ 25.579637] md127: detected capacity change from 0 to 5401587744768 [ 25.728050] PM: Image not found (code -22) [ 25.779465] BTRFS: device label xs22_root devid 1 transid 25364 /dev/sds2 [ 25.810606] BTRFS info (device sds2): disk space caching is enabled [ 25.841015] BTRFS info (device sds2): has skinny extents [ 25.870085] BTRFS error (device sds2): devid 2 uuid c93d387c-1acc-4bea-aeae-59a440ac7991 is missing [ 25.903337] BTRFS error (device sds2): failed to read the system array: -2 [ 25.957884] BTRFS error (device sds2): open_ctree failed [ 26.002614] printk: systemd-udevd: 53 output lines suppressed due to ratelimiting BusyBox v1.22.1 (Debian 1:1.22.0-19+b3) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) mount /dev/sds2 /root [ 42.638417] BTRFS info (device sds2): disk space caching is enabled [ 42.673164] BTRFS info (device sds2): has skinny extents [ 42.706947] BTRFS error (device sds2): devid 2 uuid c93d387c-1acc-4bea-aeae-59a440ac7991 is missing [ 42.743085] BTRFS error (device sds2): failed to read the system array: -2 [ 42.789905] BTRFS error (device sds2): open_ctree failed mount: mounting /dev/sds2 on /root failed: Invalid argument (initramfs) mount /dev/sdr2 /root [ 54.216006] BTRFS: device label xs22_root devid 2 transid 25364 /dev/sdr2 [ 54.249603] BTRFS info (device sds2): disk space caching is enabled [ 54.281158] BTRFS info (device sds2): has skinny extents [ 54.318920] BTRFS info (device sds2): enabling ssd optimizations [ 54.352494] BTRFS info (device sds2): checking UUID tree (initramfs) umount /root (initramfs) mount /dev/sds2 /root [ 63.458869] BTRFS info (device sds2): disk space caching is enabled [ 63.490016] BTRFS info (device sds2): has skinny extents [ 63.529345] BTRFS info (device sds2): enabling ssd optimizations
