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Michael MacIsaac wrote: > James, > >> How do you tell Linux what VM already knows (The disk is RO) during > startup >> so you camt mount the VM specified RO mini-disk as RW to linux? > Good question. But it goes back to the basic premise that Mark pointed > out. I'll try to summarize > 1) when you need to write to a disk that others have R/O, all others > should unmount the disk, > 2) then the master can mount it, write to it and unmount it. > 3) then all others can mount it R/O again. > > This is a good, maybe even best, practice. > Not sure entirely what your end goal is Mike. But if making a MASTER disk avilable to various CLONEs is the requirement, and you do not want the MASTER system to be stopped.... One option may be to go into SINGLE use mode, then you can mount the root filesystem as R/O. I would then use something like FLASHCOPY to make a (quick) copy of the MASTER disk for the CLONEs to mount. Once the FLASHCOPY is complete (a few seconds) the MASTER system to come back up in MULTI user mode. Other tricks I'm sure you are aware of (see Redbooks) involve BIND mounts, which involve the CLONEs seeing both a R/W and R/O copy of the MASTER disk. But with the R/O mounts using "standard" mountpoints. Mark -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFEiB6H+CA7PBRBnXQRAuuHAJ49ty0hpXm6hEqGR0mmc7eLFSDHuACeKDiv +UCvccv7dpAyBHhSO0D080Q= =N/XR -----END PGP SIGNATURE----- ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
