Limitations
By default, OpenVZ restricts container access to real physical devices (thus making a container hardware-independent). An OpenVZ administrator can enable container access to various real devices, such as disk drives, USB ports, PCI devices or physical network cards.
/dev/loopN is often restricted in deployments (as loop devices use kernel threads which might be a security issue), which restricts the ability to mount disk images. A work-around is to use FUSE.
OpenVZ is limited to the providing only some VPN technologies based on PPP (such as PPTP/L2TP) and TUN/TAP. IPsec is supported inside containers since kernel 2.6.32.
Read more about this topic: Open VZ
Famous quotes containing the word limitations:
“No man could bring himself to reveal his true character, and, above all, his true limitations as a citizen and a Christian, his true meannesses, his true imbecilities, to his friends, or even to his wife. Honest autobiography is therefore a contradiction in terms: the moment a man considers himself, even in petto, he tries to gild and fresco himself.”
—H.L. (Henry Lewis)
“The only rules comedy can tolerate are those of taste, and the only limitations those of libel.”
—James Thurber (1894–1961)
“Growing up means letting go of the dearest megalomaniacal dreams of our childhood. Growing up means knowing they can’t be fulfilled. Growing up means gaining the wisdom and skills to get what we want within the limitations imposed by reality—a reality which consists of diminished powers, restricted freedoms and, with the people we love, imperfect connections.”
—Judith Viorst (20th century)