/sys/block/sd*/device/timeout not accurate
Clash Royale CLAN TAG#URR8PPP
The default value for the timeout file for SCSI disks is 30, supposedly meaning 30s. In my dmesg logs, I find that the system is waiting 180s before timing out. Setting timeout to various values reveals that is waiting by a multiple of six (i.e. timeout * 6 seconds).
Why is this happening?
(The disk access is happening through much indirection - a linear dmsetup partition on top of a snapshot table accessing a loop backed by a file on a fuse mount that is accessing the actual disk. Does this make a difference?)
linux disk timeout scsi
asked Feb 20 at 22:35
afunaafuna
20918
add a comment |
The default value for the timeout file for SCSI disks is 30, supposedly meaning 30s. In my dmesg logs, I find that the system is waiting 180s before timing out. Setting timeout to various values reveals that is waiting by a multiple of six (i.e. timeout * 6 seconds).
Why is this happening?
(The disk access is happening through much indirection - a linear dmsetup partition on top of a snapshot table accessing a loop backed by a file on a fuse mount that is accessing the actual disk. Does this make a difference?)
linux disk timeout scsi
asked Feb 20 at 22:35
afunaafuna
20918
add a comment |
The default value for the timeout file for SCSI disks is 30, supposedly meaning 30s. In my dmesg logs, I find that the system is waiting 180s before timing out. Setting timeout to various values reveals that is waiting by a multiple of six (i.e. timeout * 6 seconds).
Why is this happening?
(The disk access is happening through much indirection - a linear dmsetup partition on top of a snapshot table accessing a loop backed by a file on a fuse mount that is accessing the actual disk. Does this make a difference?)
linux disk timeout scsi
asked Feb 20 at 22:35
afunaafuna
20918
The default value for the timeout file for SCSI disks is 30, supposedly meaning 30s. In my dmesg logs, I find that the system is waiting 180s before timing out. Setting timeout to various values reveals that is waiting by a multiple of six (i.e. timeout * 6 seconds).
Why is this happening?
(The disk access is happening through much indirection - a linear dmsetup partition on top of a snapshot table accessing a loop backed by a file on a fuse mount that is accessing the actual disk. Does this make a difference?)
linux disk timeout scsi
linux disk timeout scsi
asked Feb 20 at 22:35
afunaafuna
20918
asked Feb 20 at 22:35
afunaafuna
20918
asked Feb 20 at 22:35
afunaafuna
20918
asked Feb 20 at 22:35
afunaafuna
20918
asked Feb 20 at 22:35
afunaafuna
20918
20918
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "106"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f501973%2fsys-block-sd-device-timeout-not-accurate%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Unix & Linux Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f501973%2fsys-block-sd-device-timeout-not-accurate%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown