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slesdisablefscheck [2013/02/02 20:27] (current) sjoerd created |
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+ | = Disable Auto FileSystem Check on SLES | ||
+ | On SLES 10, the sytem performs an auto check on the file systems by default. This can be very annoying when performing an emergency reboot on a production system. This behavior is adjusted for SLES 11 but as far as I am concerned I'd still check the setting. | ||
+ | |||
+ | = Devices | ||
+ | The setting is set on a device, which can be checked using the simple command fdisk: | ||
+ | |||
+ | <code> | ||
+ | fdisk -l | ||
+ | |||
+ | Disk /dev/sda: 12.9 GB, 12884901888 bytes | ||
+ | 255 heads, 63 sectors/track, 1566 cylinders | ||
+ | Units = cylinders of 16065 * 512 = 8225280 bytes | ||
+ | Disk identifier: 0x000988d6 | ||
+ | |||
+ | Device Boot Start End Blocks Id System | ||
+ | /dev/sda1 1 191 1534176 82 Linux swap / Solaris | ||
+ | /dev/sda2 * 192 1566 11044687+ 83 Linux | ||
+ | </code> | ||
+ | |||
+ | = Settings | ||
+ | You can check the file system properties for each device using the tun2fs command: | ||
+ | <code> | ||
+ | # tune2fs -l /dev/sda2 | ||
+ | ....cut... | ||
+ | Maximum mount count: 500 | ||
+ | Last checked: Wed Aug 4 15:44:42 2010 | ||
+ | Check interval: 5184000 (2 months) | ||
+ | Next check after: Sun Oct 3 15:44:42 2010 | ||
+ | ...cut... | ||
+ | </code> | ||
+ | |||
+ | And change them using the same command: | ||
+ | <code> | ||
+ | # tune2fs -c0 -i0 /dev/sda2 | ||
+ | tune2fs 1.38 (30-Jun-2005) | ||
+ | Setting maximal mount count to -1 | ||
+ | Setting interval between checks to 0 seconds | ||
+ | </code> | ||
+ | |||
+ | Setting explanation: | ||
+ | * -c max_mounts_count | ||
+ | * -i interval[d|m|w] | ||
+ | |||
+ | Now the settings look like this if you would issue tune2fs -l <device> again: | ||
+ | <code> | ||
+ | Maximum mount count: -1 | ||
+ | Last checked: Wed Aug 4 15:44:03 2010 | ||
+ | Check interval: 0 (<none>) | ||
+ | </code> | ||
+ | |||
+ | {{tag>linux storage}} |