Jari Ruusu

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  • Comment: loop-aes fails to build on kernel 3.2, Debian wheezy

    Please re-read loop-AES README section 3, first two paragraphs. Looking at your error messages and loop-AES source, your case looks like kernel source headers are not in a state that can be used to compile loop-AES (or other) kernel modules. Specifically, LINUX_VERSION_CODE from linux/version.h is missing or it indicates wrong kernel version.

    2012-02-18 23:25:28 PST in loop-AES

  • Comment: Slow write performance on Debian squeeze

    > Will this still be an issue? Internal linux kernel interfaces change. loop-AES-v3.3a version will most likely fail to compile for that linux-3.2 kernel. Latest loop-AES should compile and work OK with that earlier mentioned lo_prealloc=4096 parameter tuning. Guys, If you post as "nobody", please include some sort of nickname in your post. I'm having difficulties...

    2012-02-08 06:51:19 PST in loop-AES

  • Comment: Full Disk Encryption - loop on /dev/sda

    > additional loops based on offsets into the first loop Additional loops backed by /dev/sda. Two loops stacked is wasted resources. Only first loop device (the one that is set up by initrd) needs a passphrase, other loop devices can read cleartext key file from encrypted+mounted root file system. /dev/loop0 -> /dev/sda sectors 0...999 /dev/loop1 -> /dev/sda sectors...

    2012-01-28 23:11:57 PST in loop-AES

  • Comment: Full Disk Encryption - loop on /dev/sda

    > May I follow the README example: "Example 7 - Boot > from USB-stick + encrypted root partition" except > losetup the raw device, /dev/sda? Yes. However, when kernel detects /dev/sda device, kernel may look for partition table, and when none is found, kernel may complain with cosmetic/no-harm error message. The initrd that build-initrd.sh creates attempts to...

    2012-01-28 00:47:02 PST in loop-AES

  • Comment: Slow write performance on Debian squeeze

    What was previous kernel version? What was previous loop-AES version? What version is "updated" loop-AES?.

    2012-01-24 23:48:05 PST in loop-AES

  • Comment: Slow write performance on Debian squeeze

    loop-AES README file section 9 has information about performance tuning. Does it help if you set lo_prealloc=4096 parameter in /etc/modprobe.conf file?.

    2012-01-16 23:06:58 PST in loop-AES

  • Comment: Slow write performance on Debian squeeze

    What version of loop-AES are you using? What type backing device? SATA / SCSI / MD / DM / ??? Any non-default loop-AES options/parameters set?.

    2012-01-15 23:05:45 PST in loop-AES

  • Comment: devices >2TB

    IV computations use 64 bit sector number, if kernel supports that. If kernel supports only 32 bit sector number, then upper 32 bits are set to zero. On-disk format is same either way.

    2012-01-10 05:53:25 PST in loop-AES

  • Comment: devices >2TB

    > devices >2TB? yes > 4KB sector size? yes.

    2012-01-10 05:44:08 PST in loop-AES

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