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On Wed, 7 Sep 2011 23:54:57 +0100, Neil Bothwick wrote about Re: |
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[gentoo-user] /dev/sda* missing at boot: |
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> On Wed, 7 Sep 2011 13:52:22 -0400, Canek Peláez Valdés wrote: |
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> |
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> > After reading that, and other similar threads, I still don't |
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> > understand the benefits of a separated /usr. |
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> |
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> Putting it on a logical volume is one advantage, allowing /usr to be |
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> resized should the need arise. |
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More than this, one can put /usr on a stripe set so that /usr/bin |
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and /usr/lib, two of the directories with the highest I/O traffic, can |
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be made more performant. But this requires LVM, RAID or some blend of |
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both. This, in turn, precludes that it be merged with /, unless the |
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initramfs grows even more to handle those extra DASD management |
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facilities. |
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The more I think about this merge of / and /usr, the dumber I think the |
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idea is. As I wrote in an earlier message on this list, the initramfs |
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will be many times larger than the kernel itself. Indeed, my /boot |
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partition is only 32 MiB, and that will be too small to contain all the |
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extra libraries and programs to run the initramfs script. |
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> > Mounting it read-only |
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> > seems the only sensible one, and then I think is better to go all |
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> > the way and mount / read-only. |
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> |
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> Putting /etc on a read-only filesystem seems a really bad idea. |
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To say the least. |
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-- |
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Regards, |
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|
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Dave [RLU #314465] |
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dwnoon@××××××××.com (David W Noon) |
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