[PATCH 2/2] btrfs-progs: canonicalize dm device name before update kernel

2014-08-14 Thread Eryu Guan
A btrfsck or btrfs device scan -d operation could change the device name of other mounted btrfs in kernel, if the other btrfs is on lvm device. Assume that we have two btrfs filesystems, kernel is 3.16.0-rc4+ [root@hp-dl388eg8-01 btrfs-progs]# btrfs fi show Label: none uuid: 1aba7da5-ce2b-4af0-a

Re: [PATCH 2/2] btrfs-progs: canonicalize dm device name before update kernel

2014-08-14 Thread Anand Jain
Eryu, btrfs dev scan -d option is there for legacy reasons. The new method is using libblkid to find btrfs devs. David/Zach, is it time to remove -d option ? or mention deprecated. But your test case show problem using btrfsck as well. thats nice! The fix for this is in the kernel, whi

Re: [PATCH 2/2] btrfs-progs: canonicalize dm device name before update kernel

2014-08-14 Thread Eryu Guan
On Fri, Aug 15, 2014 at 09:50:34AM +0800, Anand Jain wrote: > > Eryu, > > btrfs dev scan -d option is there for legacy reasons. The new method > is using libblkid to find btrfs devs. > >David/Zach, is it time to remove -d option ? or mention deprecated. > > > But your test case show pro

Re: [PATCH 2/2] btrfs-progs: canonicalize dm device name before update kernel

2014-08-19 Thread Anand Jain
On 15/08/2014 12:30, Eryu Guan wrote: On Fri, Aug 15, 2014 at 09:50:34AM +0800, Anand Jain wrote: Eryu, btrfs dev scan -d option is there for legacy reasons. The new method is using libblkid to find btrfs devs. David/Zach, is it time to remove -d option ? or mention deprecated.

Re: [PATCH 2/2] btrfs-progs: canonicalize dm device name before update kernel

2014-09-02 Thread David Sterba
On Thu, Aug 14, 2014 at 07:40:20PM +0800, Eryu Guan wrote: > [root@hp-dl388eg8-01 btrfs-progs]# btrfs fi show > Label: none uuid: 1aba7da5-ce2b-4af0-a716-db732abc60b2 > Total devices 1 FS bytes used 384.00KiB > devid1 size 15.00GiB used 2.04GiB path > /dev/mapper/rhel_hp--dl38

Re: [PATCH 2/2] btrfs-progs: canonicalize dm device name before update kernel

2014-09-02 Thread Eryu Guan
On Tue, Sep 02, 2014 at 01:32:34PM +0200, David Sterba wrote: > On Thu, Aug 14, 2014 at 07:40:20PM +0800, Eryu Guan wrote: > > [root@hp-dl388eg8-01 btrfs-progs]# btrfs fi show > > Label: none uuid: 1aba7da5-ce2b-4af0-a716-db732abc60b2 > > Total devices 1 FS bytes used 384.00KiB > >