[SOLVED] [LVM over LUKS] TRIM forwarding doesn't work

Recently I encrypted my SSD using LUKS and created three LVM volumes on top of it. Then I added "allow-discards" to the list of kernel parameters, here is the respective entry from grub.cfg:
linux /vmlinuz-linux root=/dev/mapper/vgarch-root ro cryptdevice=/dev/sda2:vgarch:allow-discards cryptkey=/dev/disk/by-uuid/02F2-CDB8:vfat:/lukskey quiet logo.nologo loglevel=3 console=tty1 splash=silent,theme:arch-elegant elevator=noop transparent_hugepage=never radeon.modeset=1
And an excerpt from fstab:
/dev/mapper/vgarch-root / ext4 defaults,auto,noatime,discard 0 1
UUID=e8ba294e-9621-422d-8f40-d9ffbc715484 /boot ext2 defaults 0 2
/dev/mapper/vgarch-var /var ext4 defaults,auto,noatime,discard 0 2
/dev/mapper/vgarch-home /home ext4 defaults,auto,noatime,discard 0 2
When the system is booting up, "encrypt" hook prints the appropriate message ("Enabling TRIM/discard support."), so everything seems to work fine. But when I check for TRIM support using the following method, the last command doesn't print zeroes as expected.
[root@archhost /]# dd if=/dev/urandom of=tempfile count=100 bs=512k oflag=direct
100+0 records in
100+0 records out
52428800 bytes (52 MB) copied, 5.66872 s, 9.2 MB/s
[root@archhost /]# hdparm --fibmap tempfile
tempfile:
filesystem blocksize 4096, begins at LBA 0; assuming 512 byte sectors.
byte_offset begin_LBA end_LBA sectors
0 13969408 13970431 1024
524288 13986816 13987839 1024
1048576 14026752 14127103 100352
[root@archhost /]# hdparm --read-sector 13969408 /dev/sda
/dev/sda:
reading sector 13969408: succeeded
bc43 41aa 82eb 4200 438a 6151 cbbd 0842
4014 cfa4 17e7 b2ca 7c92 ec35 9fe3 0089
206c beba c33d 5876 89e7 0d9c 1fc7 b122
801e bdb9 82af 8885 add9 7b17 7aa4 4c69
d4c1 da55 2029 bd05 d0f0 cd22 a944 b27b
ffa7 9c29 ad4a 9292 7f3a 9e4d 9040 f135
f507 3d8b c142 6ac2 da83 167a c40e 1be4
2c58 f7b6 fb50 2ce7 c7d2 6f70 ce45 be87
bfe4 2755 4795 10ee e1e1 1362 d078 a8ac
0754 8663 6881 12e4 fe8c c1c1 795f 7617
0423 1abf eade 31d1 4bfc e7a0 5fbc 36cd
af25 febe 374a bef1 eb3b 2b73 df5c a5fe
9dc3 d5e9 e31c 97ec 35ca 4002 4beb 0917
2d72 d0e3 f0ab 8d75 0fcf ce97 500f e869
875b 7866 1528 7148 99d0 6369 3369 a639
cb39 f552 a277 62c3 1ba8 bdb3 4127 a6ca
5cdd d934 5f5b a434 a20e 980c 7bfd 6f40
7029 d9aa 294f 321e 4eab 8130 adf3 140a
5352 328b 6713 25ac c37a d33a 2be9 3699
459c fc7a 1b10 7e99 8b74 cc60 e5b9 3a85
edbb 7baf 2205 34a4 c10e 6d79 1e44 239f
dad3 ee10 b76f 76fa 569c 3b73 81e0 0848
db89 4efd c520 163e af72 b83b ff3b a924
d2f1 120d 75df f7ae 3922 1b2a ee39 5efd
3ade 6a0e f24e f14d 7444 d7b6 3c3a 5ab6
2345 420d e9a4 1811 807e 9c29 5da3 f9a0
f7cb ba53 b3f1 69c4 b76d fa9d 6a0a 0184
a69c fe16 42d9 71a9 85b9 1b01 8870 40b1
585a c191 a101 39b4 2203 b662 2a17 50fc
93ac 3a2d 2b27 22f4 ff60 f7d1 fd59 feda
1477 c56f 816a 0199 34b7 ba4c 4950 6af8
b7bf c409 d48a e701 2894 1be1 3ac9 d4b1
[root@archhost /]# rm tempfile
[root@archhost /]# sync
[root@archhost /]# hdparm --read-sector 13969408 /dev/sda
/dev/sda:
reading sector 13969408: succeeded
bc43 41aa 82eb 4200 438a 6151 cbbd 0842
4014 cfa4 17e7 b2ca 7c92 ec35 9fe3 0089
206c beba c33d 5876 89e7 0d9c 1fc7 b122
801e bdb9 82af 8885 add9 7b17 7aa4 4c69
d4c1 da55 2029 bd05 d0f0 cd22 a944 b27b
ffa7 9c29 ad4a 9292 7f3a 9e4d 9040 f135
f507 3d8b c142 6ac2 da83 167a c40e 1be4
2c58 f7b6 fb50 2ce7 c7d2 6f70 ce45 be87
bfe4 2755 4795 10ee e1e1 1362 d078 a8ac
0754 8663 6881 12e4 fe8c c1c1 795f 7617
0423 1abf eade 31d1 4bfc e7a0 5fbc 36cd
af25 febe 374a bef1 eb3b 2b73 df5c a5fe
9dc3 d5e9 e31c 97ec 35ca 4002 4beb 0917
2d72 d0e3 f0ab 8d75 0fcf ce97 500f e869
875b 7866 1528 7148 99d0 6369 3369 a639
cb39 f552 a277 62c3 1ba8 bdb3 4127 a6ca
5cdd d934 5f5b a434 a20e 980c 7bfd 6f40
7029 d9aa 294f 321e 4eab 8130 adf3 140a
5352 328b 6713 25ac c37a d33a 2be9 3699
459c fc7a 1b10 7e99 8b74 cc60 e5b9 3a85
edbb 7baf 2205 34a4 c10e 6d79 1e44 239f
dad3 ee10 b76f 76fa 569c 3b73 81e0 0848
db89 4efd c520 163e af72 b83b ff3b a924
d2f1 120d 75df f7ae 3922 1b2a ee39 5efd
3ade 6a0e f24e f14d 7444 d7b6 3c3a 5ab6
2345 420d e9a4 1811 807e 9c29 5da3 f9a0
f7cb ba53 b3f1 69c4 b76d fa9d 6a0a 0184
a69c fe16 42d9 71a9 85b9 1b01 8870 40b1
585a c191 a101 39b4 2203 b662 2a17 50fc
93ac 3a2d 2b27 22f4 ff60 f7d1 fd59 feda
1477 c56f 816a 0199 34b7 ba4c 4950 6af8
b7bf c409 d48a e701 2894 1be1 3ac9 d4b1
Is it possible at all to enable TRIM support in this case? And if yes, what did I miss?
Last edited by Atragor (2012-07-01 19:19:14)

Good, my guess then would be that your trim is working already and you should be able to invoke it also with fstrim manually to get a positive confirmation in bash.
The reason you don't see the zeros in your check should be that the hdparm reports back the wrong starting sector of the file due to offsets. See here for a thorough explanation by the developer and here another summary.

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I reinstalled my because of new hardware with EFI and GPT, and now I can't get work my swap partition encrypted.
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Also with more options (key-length, etc) doesn't change the behavior.
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Here is the journald-output that might be relevant:
Feb 09 01:25:41 dixi-arch systemd[1]: Found device Hitachi_HDP725025GLA380.
Feb 09 01:25:41 dixi-arch systemd[1]: Activating swap /dev/sda1...
Feb 09 01:25:41 dixi-arch systemd[1]: Starting Cryptography Setup for cryptswap...
Feb 09 01:25:41 dixi-arch kernel: tda829x 0-004b: type set to tda8290+75a
Feb 09 01:25:41 dixi-arch systemd[1]: Activated swap /dev/sda1.
Feb 09 01:25:41 dixi-arch kernel: Adding 2097148k swap on /dev/sda1. Priority:-1 extents:1 across:2097148k FS
Feb 09 01:25:42 dixi-arch kernel: device-mapper: uevent: version 1.0.3
Feb 09 01:25:42 dixi-arch kernel: device-mapper: ioctl: 4.26.0-ioctl (2013-08-15) initialised: [email protected]
Feb 09 01:25:42 dixi-arch systemd-cryptsetup[251]: Set cipher aes, mode cbc-essiv:sha256, key size 256 bits for device /dev/sda1.
Feb 09 01:25:42 dixi-arch systemd-cryptsetup[251]: Failed to activate with key file '/dev/urandom': Device or resource busy
Feb 09 01:26:16 dixi-arch systemd-cryptsetup[251]: Loading of cryptographic parameters failed: Invalid argument
Feb 09 01:26:16 dixi-arch systemd-cryptsetup[251]: Failed to activate: Invalid argument
Feb 09 01:26:16 dixi-arch systemd[1]: [email protected]: main process exited, code=exited, status=1/FAILURE
Feb 09 01:26:16 dixi-arch systemd[1]: Failed to start Cryptography Setup for cryptswap.
Feb 09 01:26:16 dixi-arch systemd[1]: Dependency failed for Encrypted Volumes.
Feb 09 01:26:16 dixi-arch systemd[1]: Dependency failed for dev-mapper-cryptswap.device.
Feb 09 01:26:16 dixi-arch systemd[1]: Dependency failed for /dev/mapper/cryptswap.
Feb 09 01:26:16 dixi-arch systemd[1]: Dependency failed for Swap.
Feb 09 01:26:16 dixi-arch systemd[1]: Unit [email protected] entered failed state.
Feb 09 01:26:16 dixi-arch systemd[1]: Starting System Initialization.
Feb 09 01:26:35 dixi-arch systemd-cryptsetup[602]: Key file /dev/urandom is world-readable. This is not a good idea!
Feb 09 01:26:35 dixi-arch systemd-cryptsetup[602]: Set cipher aes, mode cbc-essiv:sha256, key size 256 bits for device /dev/sda1.
Feb 09 01:26:35 dixi-arch systemd-cryptsetup[602]: Failed to activate with key file '/dev/urandom': Device or resource busy
During the boot sequence the PC stops working and I have to press enter to keep going. Finally i have these errors and a non-encrypted Swap-Device.
blkid:
/dev/sda1: LABEL="swap" UUID="6013541f-7809-4b5f-9702-e630e25fd144" TYPE="swap" PARTLABEL="Linux swap" PARTUUID="9849ee0b-e0d7-4d28-866c-fb7d0134a182"
/dev/sda2: LABEL="system" UUID="4bf8a95c-bf43-4980-92dd-b0eb6dc07093" TYPE="ext4" PARTLABEL="Linux filesystem" PARTUUID="6fc2bd3d-7241-4a88-8137-9985a333e3de"
/dev/sda3: UUID="445eba44-3536-4b99-a0a6-e3629cf90654" TYPE="crypto_LUKS" PARTLABEL="Linux filesystem" PARTUUID="6b84a546-9873-496c-a7e1-721824023d07"
/dev/sda4: UUID="466b5d04-7b81-4914-b5af-7e2426b801bf" TYPE="crypto_LUKS" PARTLABEL="Linux filesystem" PARTUUID="dfdf5217-7028-4a10-ae18-3a63450c3231"
/dev/sda128: UUID="9D36-7245" TYPE="vfat" PARTLABEL="EFI System" PARTUUID="9df97a9a-3f5e-487b-a3d1-60825031b537"
/dev/mapper/_dev_sda3: LABEL="dixi-home" UUID="23548045-1c6f-4640-8c62-0f3c48c05f38" TYPE="ext4"
/dev/mapper/_dev_sda4: LABEL="backup" UUID="cbed9ef3-db0b-4750-bf6c-8c42a67ad080" TYPE="ext4"
and theres is no /dev/mapper/cryptswab, what I had expexted
swapon:
NAME TYPE SIZE USED PRIO
/dev/sda1 partition 2G 0B -1
fdisk -l:
Gerät Start Ende Größe Typ
/dev/sda1 2048 4196351 2G Linux swap
/dev/sda2 4196352 109053951 50G Linux filesystem
/dev/sda3 109053952 381683711 130G Linux filesystem
/dev/sda4 381683712 486299982 49,9G Linux filesystem
/dev/sda128 486301696 488397134 1023,2M EFI System
There are some Bug-Reports for fedora, I don't understand, but maybe the problem is, that cryptsetup can't read /dev/urandom.
But this works with my old mbr-partition; therefore I hope for a configuration error
Thanks
Last edited by midixinga (2014-02-09 23:46:06)

falconindy wrote:
Looks to me like /dev/sda1 is already a swap device. Since the underlying disk is GPT formatted, systemd finds this and activates it. Your logs and swapon show exactly this.
Feb 09 01:25:41 dixi-arch systemd[1]: Activating swap /dev/sda1...
So, of course, systemd-cryptsetup is going to fail when it tries to encrypt a device which is already in use. Get rid of the swap signature on /dev/sda1.
Wow, thank you very much !
I formatted the partition /dev/sda1 with gparted as "deleted", it's now code 0700 in gdisk
fdisk -l
Disk /dev/sda: 232.9 GiB, 250059350016 bytes, 488397168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 27980DF8-22E1-4F25-9388-711D1EDE11A9
Device Start End Size Type
/dev/sda1 2048 4196351 2G Microsoft basic data
/dev/sda2 4196352 109053951 50G Linux filesystem
/dev/sda3 109053952 381683711 130G Linux filesystem
/dev/sda4 381683712 486299982 49.9G Linux filesystem
/dev/sda128 486301696 488397134 1023.2M EFI System
Disk /dev/mapper/cryptswap: 2 GiB, 2147483648 bytes, 4194304 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
swapon -s
Filename Type Size Used Priority
/dev/dm-0 partition 2097148 0 -1
journalctl:
Feb 09 16:54:09 dixi-arch systemd[1]: Starting Cryptography Setup for cryptswap...
Feb 09 16:54:09 dixi-arch systemd-cryptsetup[271]: Key file /dev/urandom is world-readable. This is not a good idea!
Feb 09 16:54:09 dixi-arch systemd-cryptsetup[271]: Set cipher aes, mode cbc-essiv:sha256, key size 256 bits for device /dev/sda1.
Feb 09 16:54:10 dixi-arch systemd[1]: Started Cryptography Setup for cryptswap.
Feb 09 16:54:10 dixi-arch systemd[1]: Starting Encrypted Volumes.
Feb 09 16:54:10 dixi-arch systemd[1]: Reached target Encrypted Volumes.
Feb 09 16:54:10 dixi-arch systemd[1]: Found device /dev/mapper/cryptswap.
Feb 09 16:54:10 dixi-arch systemd[1]: Activating swap /dev/mapper/cryptswap...
Feb 09 16:54:10 dixi-arch systemd[1]: Activated swap /dev/mapper/cryptswap.
Feb 09 16:54:10 dixi-arch systemd[1]: Starting Swap.
Feb 09 16:54:10 dixi-arch systemd[1]: Reached target Swap.
I think everything is fine now
Thanks again

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b) Start your ssh session with ssh -X $hostname. This enabled X forwarding for this one session. If it doesn't, you get an error message that tells you why. If $DISPLAY is not set and ther e is no error, then you either forgot -X (or -Y) or your $DISPLAY gets unset again after the login.

I got a digtal download from a CD and downloaded it to my computer and when I try to drag it over to iTunes it doesn't work, why not?

The songs are downloaded into a music folder on my computer, they are legal downloads, but it won't let me bring it over to my iTunes library. When I click and drag it, they just never copy over.

I'm not sure? I'm new to lightroom and it's lightroom 5 that I'm using. What is happening is I go to develop the picture in the developing section in lightroom and it gives me this message that says " Develop module is disabled Please purchase a license to reactivate the develop module." I shouldnt have to do anything else after already buying the cd and downloading it initially. It's already paid for? I'm so confused!!
why is the adobe lightroom 5 asking me to keep downloading the CD I bought at Best Buy store. I have already bought the CD and downloaded it on my computer but for some reason it gives me 10 days a then I have to download it again!!! Why is this its so an

[SOLVED] Xorg and mouse with HAL doesn't work

Hi
I recently reinstalled Arch Linux and I have some problems... My mouse isn't working - at all! I'm using an HP Compaq 6510b.
I've installed the following packages:
* xf86-input-evdev
* hal
* dbus
I don't have an xorg.conf file at all, as I heard that hal should solve everything automagically for me. This seems to not be the case?
Any ideas? Thanks
Last edited by skorpan (2009-06-05 18:41:51)

Yeah, I'm doing that!
BTW, Xorg.0.log is here: http://dpaste.com/51933
Last edited by skorpan (2009-06-05 17:58:31)

[SOLVED] [LVM over LUKS] TRIM forwarding doesn't work

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