I forget to say I'm using zeus...
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From: Edson Seabra
Sent: Saturday, March 28, 2020 12:30 PM
To: [email protected] <[email protected]>
Subject: Compressing btrfs image
Hi all.
I'm trying to compress a btrfs rootfs
I added in "image_types.bbclass:IMAGE_CMD_btrfs ()" two commands:
1) mount the btrfs image after mkfs.btrfs
2) btrfs filesystem defrag + compress option
But the command mount fails:
mount:
/home/edson/ng-trunk/nodegrid/tmp/work/genericx86_64-poky-linux/nodegrid/1.0-r0/deploy-nodegrid-image-complete/temp_btrfs:
failed to setup loop device for
/home/edson/ng-trunk/nodegrid/tmp/work/genericx86_64-poky-linux/nodegrid/1.0-r0/deploy-nodegrid-image-complete/nodegrid-genericx86-64-20200328134151.rootfs.btrfs.
I saw in image.bbclass the creation of do_image_btrfs task with flag 'fakeroot'.
====== image.bbclass ====
task = "do_image_%s" % t.replace("-", "_").replace(".", "_")
d.setVar(task, '\n'.join(cmds))
d.setVarFlag(task, 'func', '1')
d.setVarFlag(task, 'fakeroot', '1')
=======================
would the fakeroot flag allow do_image_btrfs execute commands that requires
root privilege ?
If not what would be the way to execute the mount command ?
I tried "pseudo mount" but it failed same way...
Thanks in advance.
Edson.
Edson Seabra
Principal Engineer
M +1 510 579 0843
E [email protected]<mailto:[email protected]>
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