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1answer
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AUFS: How to create a read/write branch of only part of a directory tree?

AuFS (another union file system) allows us to merge two trees into one, even when those trees overlap. We can then direct writes to the merged tree towards one of the branches and reads to another. ...
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4answers
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Custom initrd init script: how to create /dev/initctl

I have a virtual machine (VMM is Xen 3.3) equipped with two IDE HDD's (/dev/hda and /dev/hdb). The root file system is in /dev/hda1, where Scientific Linux 5.4 is installed. /dev/hdb contains an empty ...
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167 views

Is it possible to disable copy on write for AUFS?

I would like to set up a union mount with aufs such that new files can be created on a writable branch, but existing files cannot be modified. Is it possible to disable copy on write so that if an ...
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1answer
234 views

Is it possible to speed up network filesystem by sth like unionfs, aufs?

I need to speed up slow, large storage with local SSD drive. I figured out I could do this with union filesystems. Here are results with nginx reading data from: local SSD alone: ~140 ...
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1answer
629 views

Any tricks for making sshfs authenticate only on write?

There is seemingly a trick for creating read-only sshfs logins with the read only attribute is enforced by the remote's ~/.ssh/authorized_keys file. You first create a program ~/.ssh/ro-sftp-server ...
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5answers
2k views

RAM disk and physical RAID

I need to create a lot of temporary files for which I need to have fast access, so I'm thinking about using a RAM disk. The problem is that the temporary files might get pretty big (1-4 GB) and in ...
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1answer
2k views

How to mount a root aufs in Red Hat / Fedora Core?

I'm trying to set up a virtual machine running Red Hat EL (actually Scientific Linux, but same difference) where the root file system is protected and not writable. I'd like to accomplish this with a ...