Le 03/05/2016 14:06, Jim Murphy a écrit :
On Tue, May 3, 2016 at 4:04 AM, Didier Kryn<k...@in2p3.fr> wrote:
Le 02/05/2016 14:12, fsmithred a écrit :
No support for file system labels at this time. If someone can tell me a
reliable way for unprivileged user to get the labels, I'll add it. Feel
free to use these scripts as they are or as motivation to create something
better.
-fsr
On 04/28/2016 01:52 PM, fsmithred wrote:
On 04/27/2016 08:28 PM, fsmithred wrote:
You could get the label from lsblk, do 'pmount label' and it will be
mounted at /media/label. Every time you plug in a thumb drive labeled
backup, it'll go to the same place. If you unmount the drive,
/media/label
will no longer exist, so you could even have the backup script check to
make sure it's there.
-fsr
Correction - Only root can get the label from lsblk. User can get the
label from '/sbin/blkid -s LABEL', but only after root has run blkidat
least once. Other than that, I've now got a script that will handle the
labels... sometimes.
-fsr
kryn@apcnb98:~$ /sbin/blkid /dev/sda5
/dev/sda5: LABEL="/" UUID="d91acaa3-5fdc-49e9-9f2b-ba7f3efb33f9"
UUID_SUB="6a0c80cd-5dc6-4135-8018-575686e7e11e" TYPE="btrfs"
kryn@apcnb98:~$ /sbin/blkid /dev/sda6
/dev/sda6: LABEL="/usr" UUID="05f9f811-b8b1-445f-ac8c-9537a202a9f9"
UUID_SUB="52b8e1b8-7080-4696-94e1-8f7580005871" TYPE="btrfs"
Didier
Problem, blkid uses a cache that is only updated when root runs blkid.
Any changes are not automatically updated. A user only sees the cache.
The issues is, fsr is trying to do everything as a "user" so tools like
lsblk and blkid don't work for this case. For blkid, the cache will not
be up to date when say a flash-drive is add/or removed.
Jim
I cannot reproduce what you describe. I just tried it with a usb stick:
kryn@apcnb98:~$ /sbin/blkid /dev/sdb2
/dev/sdb2: LABEL="Didier-Kryn-2"
UUID="64f73abe-34b9-4d4c-bac7-6dd85f0e4696" TYPE="reiserfs"
This was done on debian-wheezy, from the console, without any DE
running, and even display manager stopped, and after a fresh reboot. If
blkid, invoked by normal user, runs from cache, then it means it has
been invoked by root after insertion - I suspect udev and consider it a
good thing, and I can tell you that vdev does systematically invoke
blkid for every block device.
Didier
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