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.
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Famous quotes containing the word limitations:
“... art transcends its limitations only by staying within them.”
—Flannery O’Connor (1925–1964)
“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 motion picture made in Hollywood, if it is to create art at all, must do so within such strangling limitations of subject and treatment that it is a blind wonder it ever achieves any distinction beyond the purely mechanical slickness of a glass and chromium bathroom.”
—Raymond Chandler (1888–1959)