On Thu, Jun 18 2015 at 2:08pm -0400, Andi Kleen <andi@xxxxxxxxxxxxxx> wrote: > > Hmm, so you have a filesystem active on it too? > > I unmounted it before. > > > > > > Also the VG removal did not work of course. > > > > Once you resolve the filesystem piece, from vgremove man page: > > > > "vgremove allows you to remove one or more volume groups. If one or > > more physical volumes in the volume group are lost, consider vgreduce > > --removemissing to make the volume group metadata consistent again." > > Well in any case there should not be WARN()s. Yes well I don't even know what WARN_ON you're hitting. You're running a 4.0.4 fedora kernel. Which WARN_ON() is triggering? The WARN_ON_ONCE() in bdev_write_inode()? -- likely since the only caller of bdev_write_inode is __blkdev_put... /** * write_inode_now - write an inode to disk * @inode: inode to write to disk * @sync: whether the write should be synchronous or not * * This function commits an inode to disk immediately if it is dirty. This is * primarily needed by knfsd. * * The caller must either have a ref on the inode or must have set I_WILL_FREE. */ So I have no idea why bdev_write_inode() is using WARN_ON_ONCE.. makes since that write_inode_now() will fail if the disk no longer exists. SO the WARN_ON_ONCE seems misplaced. Git blame shows its all hch's fault: 564f00f6c (Christoph Hellwig 2015-01-14 10:42:33 +0100 57) WARN_ON_ONCE(write_inode_now(inode, true)); 564f00f6c block_dev: only write bdev inode on close -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
