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On Thu, Jun 27, 2013 at 11:53 AM, Duncan <1i5t5.duncan@×××.net> wrote: |
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> Mark Knecht posted on Tue, 25 Jun 2013 15:51:14 -0700 as excerpted: |
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> |
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>> This is related to my thread from a few days ago about the |
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>> disappointing speed of my RAID6 root partition. The goal here is to get |
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>> the machine booting from an SSD so that I can free up my five hard |
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>> drives to play with. |
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> |
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> FWIW, this post covers a lot of ground, too much I think to really cover |
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> in one post. Which is why I've delayed replying until now. I expect |
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> I'll punt on some topics this first time thru, but we'll see how it |
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> goes... |
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|
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Agreed, and I've made some major course changes WRT this whole thing, |
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but there's a lot of great info in your response so I'm going to make |
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a very targeted response for now. |
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|
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<SNIP> |
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> |
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> zgrep 'REISER\|EXT4\|TMPFS\|BTRFS' /proc/config.gz |
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<SNIP> |
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|
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I use ext4 mostly. Some ext3 on older external USB drives. ext2 on boot. |
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|
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Looking at caps, xattr & filecaps I don't appear to have them selected |
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on any packages. (equery hasuse ..., emerge -pv ...) |
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|
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Similar results as yours for the zgrep: |
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|
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mark@c2RAID6 ~ $ zgrep 'REISER\|EXT4\|TMPFS\|BTRFS' /proc/config.gz |
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CONFIG_DEVTMPFS=y |
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# CONFIG_DEVTMPFS_MOUNT is not set |
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CONFIG_EXT4_FS=y |
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CONFIG_EXT4_FS_POSIX_ACL=y |
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CONFIG_EXT4_FS_SECURITY=y |
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# CONFIG_EXT4_DEBUG is not set |
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# CONFIG_REISERFS_FS is not set |
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# CONFIG_BTRFS_FS is not set |
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CONFIG_TMPFS=y |
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CONFIG_TMPFS_POSIX_ACL=y |
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CONFIG_TMPFS_XATTR=y |
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mark@c2RAID6 ~ $ |
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|
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With that in mind I may well have needed the -X on the rsync. However |
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as I didn't get a quick response I decided this was a background issue |
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for me in a sense. My HDD-based, low performance RAID6 is working so |
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for now I'm cool. As I have some time coming up over the weekend, and |
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because I have this SSD which is to date unused, I decided to simply |
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build a new Gentoo install from scratch on the SDD in a chroot. I |
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haven't even bothered with trying to boot it yet. I just copied all |
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the RAID6 config stuff, world file, /etc/portage/*, /etc/conf.d, blah |
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blah and let it start building all the binaries. If it works, great. |
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If not no big deal. It's just compute cycles because it's on the SDD |
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and isn't slowing me down much inside of the RAID6 environment today. |
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|
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However, I think your comments about gpt & grub2 are VERY good points |
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and might work out in my favor long term. I only used 2 partitions on |
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the SDD - one for a new boot partition and one for /, my thought being |
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that if I installed grub on the SDD then in BIOS I could point at |
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/dev/sda to boot off the SDD instead of /dev/sdb. As I think about |
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your comments, I could consider backing up the SDD install using rsync |
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-aAvx, converting to gpt & grub2 on that device, do my learning and it |
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doesn't have to impact my current setup at all. That can all stay on |
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the hard drives until I'm ready to get rid of it. It's just a flip of |
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a switch in BIOS as to which one I'm using. |
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|
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I'll go through your response later and continue the conversation as |
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appropriate but I wanted to say thanks more quickly for the above |
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points. |
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|
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Cheers, |
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Mark |