On Thu, Oct 01, 2015 at 07:04:43PM +0200, Sjoerd wrote: > On Thursday 01 October 2015 02:21:23 Duncan wrote: > > > That's very likely because unlike traditional single-device filesystems > > (including single-device btrfs), multi-device btrfs has multiple devices > > it must know about before it can mount the device, while mount only feeds > > it one device. > > > > There are two ways to tell btrfs (the kernel side) about the other > > devices. > > > > 1) Do a btrfs device scan before trying to mount. > > > > 2) Name the component devices in the mount options, using the device= > > option (multiple times as necessary to list all devices). > > > Option 2 was to simplest to check and that works. Thanks for the tip! > Still weird that my single devide SSD BTRFS bootdisk just worked fine > (althought it's using the uuid offcourse)...But it would imply to me that > there's a btrfs device scan run before mounting it.
Not really. A single deice FS doesn't need the scan. > Before I created the RAID5 I just had the four disks configures as JBOD in > btrfs (I used partitions that time though) and mounted it just fine with the > LABEL only, so it might be something with RAID5. > > Anyway it's working now with just a much longer fstab line ;) > > Cheers, > Sjoerd > -- Hugo Mills | Vote early, vote often hugo@... carfax.org.uk | http://carfax.org.uk/ | PGP: E2AB1DE4 |
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