fredrick@acdpyr.ucar.edu (Tim Fredrick) (01/04/90)
[Moderators Note:- One thing I use quite a bit, on TCP/ip systems, which don't have NFS, is the following:- tar cvf - files | rcmd user@machine dd of=device bs=10k It works just fine for me (on a System V machine). - Der] On our SPARCstations, dump is capable of remote-mounting a tape drive on another machine by using the option "f user@machine:device". Does anyone out there have a version of cpio or tar that will also remote- mount a device on another machine, preferably using a similar "user@machine" syntax? We wish to access a high-speed tape drive for backups from remote UNIX machines, and our cpio and tar do not support remote devices. Thanks in advance. --Tim Tim Fredrick National Center for Atmospheric Research (303) 497-1498 Atmospheric Chemistry Division fredrick@ncar.ucar.edu PO Box 3000 fredrick@ncar.CSNET Boulder, CO 80307
steve@nuchat.UUCP (Steve Nuchia) (02/23/90)
In article <3535@zorba.Tynan.COM> mvadh@cbnews.ATT.COM (andrew.d.hay,54242,wi,1d007,508 374 5484) writes: >just a note -- sV RFS allows one to remote-mount the entire /dev directory... What happens if the kernels are different? Is there any protection against, say, /dev/lp having world read/write and major/minor numbers corresponding to /dev/mem? Presumably one would not do this intentionally but it strikes me as a likely kind of thing to happen as configurations drift over time. Is there a mechanism to protect against this sort of thing or is it a matter of policy? -- Steve Nuchia South Coast Computing Services (713) 964-2462 "If the conjecture `You would rather I had not disturbed you by sending you this.' is correct, you may add it to the list of uncomfortable truths." - Edsgar Dijkstra
ted@welch.jhu.edu (Ted Ying) (02/23/90)
>In article <3534@zorba.Tynan.COM> uunet!acdpyr.ucar.edu!fredrick (Tim Fredrick) writes: >[] >"On our SPARCstations, dump is capable of remote-mounting a tape drive on >"another machine by using the option "f user@machine:device". >" >"Does anyone out there have a version of cpio or tar that will also remote- >"mount a device on another machine, preferably using a similar "user@machine" >"syntax? > pdtar which is available by anonymous login from uunet.uu.net works exactly like tar with an additional feature. It allows you to specify remote devices using the "-f host:/dev/devname" option. Ted Ying ted@welchlab.welch.jhu.edu SEMINARS: From 'semi' and 'arse', hence, any half-assed discussion. Disclaimer: You don't really think this place would let me speak for them do you?
guy@auspex.UUCP (Guy Harris) (03/08/90)
>>just a note -- sV RFS allows one to remote-mount the entire /dev directory... > >What happens if the kernels are different? Is there any protection >against, say, /dev/lp having world read/write and major/minor numbers >corresponding to /dev/mem? No, but there doesn't have to be. If you mount a "/dev" directory from another machine, all accesses to devices in that directory go over the wire and access the remote machine's devices, using the *remote* machine's interpretation of the major and minor numbers. So, even if "/dev/lp" on the remote machine had the same major/minor as "/dev/mem" on your machine, using "/mnt/dev/lp" or whatever would refer to the printer on the remote machine, not physical memory on your machine.
mark@DRD.Com (Mark Lawrence) (04/13/90)
uunet!welchlab.welch.jhu.edu!ted (Ted Ying) wrote: } pdtar which is available by anonymous login from uunet.uu.net } works exactly like tar with an additional feature. It allows you } to specify remote devices using the "-f host:/dev/devname" option. I don't know if they're the same, but Gnu tar also supports the same syntax. Available at finer anonymous ftp and uucp sites everywhere... -- mark@DRD.Com {uunet,rutgers}!drd!mark (918)743-3013