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Am 23.04.2013 16:44, schrieb Tanstaafl: |
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> Ok, this is the last question I need to answer for myself before |
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> installing a final version of my new virtualized gentoo server... |
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> |
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> I'll be using the following partition layout: |
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> |
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> /boot (ext2), 100M |
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> /swap, 2G |
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> / (ext4), 40G |
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> |
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> then on LVM |
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> |
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> /tmp (ext2), 5G? <- how big? |
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> /var/tmp (ext2), 5G? <- how big? |
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If this is a production server I wouldn't use ext2. In the case of a |
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crash or reboot, you don't want to loose precious uptime just because of |
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fsck or corrupted file systems. |
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|
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> /var/log (ext4) <- size? should I even have this separate? |
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|
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Doesn't need to be separate but could prevent a runaway process from |
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filling /var just because it is spamming log entries. Could also be |
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achieved with quotas. |
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|
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> /var (xfs), 750G |
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> /snapshots (xfs), 10G? <- for lvm snapshots of /var for backups |
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> |
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> I'm not using a separate /home because there are no system users beyond |
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> my admin user (and the system user accounts)... |
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> |
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> So - first, is 5G way too big for the two /tmp dirs? I have lots of |
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> space, but hate waste |
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> |
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|
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If you worry about waste consider bind-mounting both from the same |
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partition and install quotas to avoid one filling up the other. A bit |
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like poor-man's btrfs sub volumes. |
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|
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Since you are using LVM you should also keep some unallocated memory, |
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start with smaller partitions and monitor usage. A cron job that looks |
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at `df` and sends a mail when a partition is more than x% full helps a lot. |
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> This mail server is not all that busy, and the backups only take about |
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> an hour, so I guesstimate that there won't be more than about 100-300MB |
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> of changes at the *extreme* outside of the envelope, so the 10G is most |
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> likely extreme overkill... but I'll know soon enough, and besides, I've |
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> got plenty of disk space to play with. |
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> |
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> One question... I have some MySQL databases running on this system too, |
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> for my userdbs, and on the new server, SOGo (groupware)... |
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> |
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> Is it recommended to incorporate scripts to perform dumps of the dbs, or |
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> is the lvm snapshot reliable enough for backing these up in their raw |
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> state? |
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> |
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Restoring from lvm snapshot is like restoring after a black out or |
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similar crash. Having proper dumps is always a good idea. |
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> Thanks as always for comments/suggestions/criticisms... |
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> |
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|
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Hope this helps, |
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Florian Philipp |
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