1
vote
2answers
56 views

Why do my devices appear to have symlinks , which are empty?

I am finding that I can't mount a device, sdb. However, I don't see it in mounts: [root@idh1 rhs-hadoop-install-0_61]# mount | grep --color dev /dev/mapper/VolGroup-lv_root on / type ext4 (rw) ...
0
votes
1answer
37 views

How can I create a RAW device ON TOP of an LVM block?

I have disks which are LVM devices. Is there a way that i can create a raw writeable disk on top of them? By raw, I mean, a file which is seen as a true block device by the kernel.
0
votes
0answers
22 views

When nodes are created in linux at the time of system bootup?

I am working on Linux kernel 3.4.56, and I am trying to add a system upgrade feature in my system using external USB device. So in my implementation is check that, if /sys/block/sd*(a/b) node is ...
1
vote
1answer
151 views

Does `ro` matter in CD-ROM mounts?

As far I know, /dev/cdrom usually provides a read-only device. However, some sources suggest to add ro in the /etc/fstab and others not. Is there a difference between /dev/cdrom /mnt/cdrom auto ...
0
votes
2answers
48 views

Is it possible to set the device containing a linux root filesystem to always be detected as a specific block device?

I have a bootable linux thumb drive meant to deploy linux OS images and I've been having problems with the thumb drive occasionally changing the /dev/sd device it mounts as, wreaking havoc with the ...