Disk /dev/ram15 ?

[Grizli]

Greatings,
Resently I spot something interesting in my Raspberry Pi2.

$this->bbcode_second_pass_code('', '
# fdisk -l
Disk /dev/ram0: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram1: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram2: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram3: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram4: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram5: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram6: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram7: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram8: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram9: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram10: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram11: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram12: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram13: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram14: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram15: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/mmcblk0: 29 GiB, 31167873024 bytes, 60874752 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x49d37934
')

Is anybody else experiance something like this? And how to fix it, if not normal?

[WarheadsSE]

What is the output of `df -h`

[Grizli]

It is:

$this->bbcode_second_pass_code('', '
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 12G 894M 11G 8% /
devtmpfs 458M 0 458M 0% /dev
tmpfs 462M 0 462M 0% /dev/shm
tmpfs 462M 284K 462M 1% /run
tmpfs 462M 0 462M 0% /sys/fs/cgroup
tmpfs 462M 0 462M 0% /tmp
/dev/mmcblk0p1 120M 17M 103M 15% /boot
/dev/mmcblk0p3 17G 48M 17G 1% /mnt/data
')

$this->bbcode_second_pass_code('', '
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
mmcblk0 179:0 0 29G 0 disk
├─mmcblk0p1 179:1 0 120M 0 part /boot
├─mmcblk0p2 179:2 0 12G 0 part /
└─mmcblk0p3 179:3 0 16.9G 0 part /mnt/data
')

[WarheadsSE]

I have none of these entries for /dev/ram* on any of my systems.

[Grizli]

Interesting. I updated to latest version, they are still there.
I'm going to check with new install on other card...
WarheadsSE, are You interested in ssh session? I can leave it online for few days.

------------------------------------------------------------
After clean install, they are still present.

[martinmarty]

I have the same thing on my RPi B+ (revision from /proc/cpuinfo = 0010) running 4.1.4-1-ARCH.

I also have them on my RPi 2 (revision from /proc/cpuinfo = a21041) running 4.1.4-1-ARCH.

I don't know exactly when they got there but I know they weren't always there.

I noticed them recently. I thought I was getting more and more of them but now I see that both my machines have 16 of them and Grizli also reported 16.

@Grizli, do you by any chance use the rpi-clone program? If so, do you suppose it could be a side-effect?

Thanks all,
-Marty