On 03.07.2014 20:07, Jeff Liu wrote: > Hi, > > On 07/03/2014 07:29 PM, Matthias Schniedermeyer wrote: > > Hi > > > > > > Is there a particular reason that the label of a mounted XFS fileystem > > can't be changed? > > Maybe since we have no user request for this function? :) > > > The man-page of xfs_admin gives a blanket "Devices that are mounted > > cannot be modified" but no explanation for why that is. > > > > In my case it's the label of the root-filesystem i want to change. So to > > change it i would have to boot the computer with some kind of live or > > rescure-system. Or i would need to temporarily connect the device to > > another computer, both aren't really nice hoops to jump through just to > > change a few characters. > > > > The only thing i can compare this to is ext2 and with ext2 (/boot > > partition, so it really is ext2) i can change the label to my hearts > > content, even the device is mounted. > > > > For my case i could live with it if i could remount the filesystem RO, > > change the label and then having to reboot the machine, still nicer than > > the other 2 options. > > Btrfs support set/change label on a mounted file system via ioctl(2), maybe we > can implement it if that sounds useful to our users. I would vote for that, i've run into this particular brickwall several times over the years. I more or less reguarly clone or "move" storage and/or machines around and several times i forgot to re-label filesystems "at that point in time were it was easily done" and then run into the brickwall when first booting whatever i built at that time. Same has happend to me for /etc/fstab and/or GRUB configuration. But unless GRUB doesn't boot at all it can be rectified without too much hassle. Yesterday i "fixed" it by changing the fstab to the "wrong" label. The other solution would be for me to make a checklist, so i don't forget such things. But that would be to easy. ;-) -- Matthias _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
