I just stumbled across an issue when exercising snapd in 14.04 under
qemu. Sideloading the same snap a few times leads to the following error
message:
Oct 25 21:37:21 autopkgtest mount[21178]: mount: could not find any
free loop device
Might be unrelated, but thought that I would just note down
About where the notion came from, I've heard about this potential
problem pretty much since we considered using the current mount-based
model of snaps. Sounds like there's a wide belief that there is such a
limit, perhaps backed by actual reality:
http://askubuntu.com/questions/499131/how-to-use-m
Perhaps you are referring to some other limit, such as mount namespace
limitations?
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https://bugs.launchpad.net/bugs/1635228
Title:
Increase number of loopback devices
To manage notifi
Thank you very much for the test.
I heard this morning that the limit was 256 based on an error on a test
yesterday, but it must be something else then. I'll go back and ask for
more details.
** Changed in: linux (Ubuntu)
Status: Triaged => Invalid
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It is worth checking to see if it is a limit on some devices which may
be running kernels that we may not be directly supporting. So any hard
facts will be useful to see why this has been reported as a hard set
limit. Let us know the specifics and we can dig into that.
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I'm curious to know where the notion of a hard-coded limit came from? Is
there an example where this is happening or is it just an incorrect
postulation?
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Correction, that attached test ran it to 8192 loop devices, but I did
run it with 64K. Note it takes *ages* for this test to purge the loop
backed devices.
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We can have thousands of loop-backed devices (if memory is sufficient).
The attached test was run and managed to create 65536 loop-backed
devices.
** Attachment added: "test number of loop-backs"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1635228/+attachment/4764313/+files/loopy.c
-
** Changed in: linux (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1635228
Title:
Increase number of loopback devices
To manage notifications about this bug g
