Hi, first of all thank you guys a lot for helping me! I hope it is ok if I write one more question about those things: I aligned the partition (which was allready fine) and the luks part to the same value. scooter ~ # fdisk -l /dev/sdb Disk /dev/sdb: 160.0 GB, 160041885696 bytes 224 heads, 56 sectors/track, 24918 cylinders Units = cylinders of 12544 * 512 = 6422528 bytes Disk identifier: 0x5328d0af Device Boot Start End Blocks Id System /dev/sdb1 * 1 34 213220 83 Linux /dev/sdb2 35 704 4202240 82 Linux swap / Solaris /dev/sdb3 705 13244 78650880 83 Linux /dev/sdb4 13245 24918 73219328 83 Linux scooter ~ # cryptsetup luksDump /dev/sdb4 ... Payload offset: 12544 ... The filesystem on top is btrfs. I didn't find any information about the align thing and btrfs. I dont know mutch about align and those stuff :/ The problem is: scooter ~ # hdparm -tT /dev/sdb3 /dev/sdb3: Timing cached reads: 18686 MB in 2.00 seconds = 9354.32 MB/sec Timing buffered disk reads: 758 MB in 3.00 seconds = 252.61 MB/sec scooter ~ # hdparm -tT /dev/mapper/ssd /dev/mapper/ssd: Timing cached reads: 17432 MB in 2.00 seconds = 8725.18 MB/sec Timing buffered disk reads: 158 MB in 3.02 seconds = 52.36 MB/sec The first value is perfect, then second one really sucks. Obv. /dev/mapper/ssd is the decrypted /dev/sdb3 Any idea about that? Regards, Felix Am Thu, 22 Apr 2010 09:42:41 +0100 schrieb mark <mark@xxxxxxxxxxx>: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 22/04/10 03:17, Arno Wagner wrote: > > You can image it to a file on a conventional disk and > > image it back, e.g. wioth dd_rescue. That should > > also fix things, at least for a while. > > I guess it might help to check that your partitions are aligned to the > erase blocks on the SSD, before you restore the image of your brtfs. > Look here > http://www.saout.de/pipermail/dm-crypt/2010-February/000584.html > > Cheers, > Mark > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAkvQDAEACgkQ3b8v4BN9hRRSrgCfWeLBY437QMYCSXHPQ0m89GQd > MMQAn2kqFW6IFcEgQ3Ebo3kMmt4p/i9G > =gQav > -----END PGP SIGNATURE----- > _______________________________________________ > dm-crypt mailing list > dm-crypt@xxxxxxxx > http://www.saout.de/mailman/listinfo/dm-crypt _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
