From: Tobias Geerinckx-Rice <me@tobias.gr>
Date: Sun, 16 Jun 2019 02:36:23 +0200
Subject: [PATCH] gnu: dstat: Skip devices without I/O.

Taken verbatim from a pull request[0] that will never be merged.

[0]: https://github.com/dagwieers/dstat/pull/164

From 0988589ea4ee092b285bd4049d56add5f61e3f69 Mon Sep 17 00:00:00 2001
From: Tobias Gruetzmacher <tobias-git@23.gs>
Date: Fri, 15 Feb 2019 18:46:57 +0100
Subject: [PATCH] Skip devices without I/O

Linux 4.18+ has added more fields to the diskstats proc file, so the
original skip condition for devices without I/O didn't apply anymore.
---
 dstat | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dstat b/dstat
index 9359965..5c2fb53 100755
--- a/dstat
+++ b/dstat
@@ -763,7 +763,7 @@ class dstat_disk(dstat):
         ret = []
         for l in self.splitlines():
             if len(l) < 13: continue
-            if l[3:] == ['0',] * 11: continue
+            if l[3:] == ['0',] * (len(l) - 3): continue
             name = l[2]
             ret.append(name)
         for item in objlist: ret.append(item)
ary</a><a href='/guix/refs/?id=d656ff473e7372872e859b47a68446f24f7b3cce'>refs</a><a class='active' href='/guix/log/gnu/bootloader/depthcharge.scm'>log</a><a href='/guix/tree/gnu/bootloader/depthcharge.scm?id=d656ff473e7372872e859b47a68446f24f7b3cce'>tree</a><a href='/guix/commit/gnu/bootloader/depthcharge.scm?id=d656ff473e7372872e859b47a68446f24f7b3cce'>commit</a><a href='/guix/diff/gnu/bootloader/depthcharge.scm?id=d656ff473e7372872e859b47a68446f24f7b3cce'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/bootloader/depthcharge.scm'>
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<div class='path'>path: <a href='/guix/log/?id=d656ff473e7372872e859b47a68446f24f7b3cce'>root</a>/<a href='/guix/log/gnu?id=d656ff473e7372872e859b47a68446f24f7b3cce'>gnu</a>/<a href='/guix/log/gnu/bootloader?id=d656ff473e7372872e859b47a68446f24f7b3cce'>bootloader</a>/<a href='/guix/log/gnu/bootloader/depthcharge.scm?id=d656ff473e7372872e859b47a68446f24f7b3cce'>depthcharge.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/bootloader/depthcharge.scm?id=d656ff473e7372872e859b47a68446f24f7b3cce&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-05-20 08:30:35 -0400'>2020-05-20</span></td><td><a href='/guix/commit/gnu/bootloader/depthcharge.scm?id=b460ba7992a0b4af2ddb5927dcf062784539ef7b'>bootloader: grub: Allow booting from a Btrfs subvolume.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/grub.scm (strip-mount-point): Remove procedure.
(normalize-file): Add procedure.
(grub-configuration-file): New BTRFS-SUBVOLUME-FILE-NAME parameter.  When
defined, prepend its value to the kernel and initrd file names, using the
NORMALIZE-FILE procedure.  Adjust the call to EYE-CANDY to pass the
BTRFS-SUBVOLUME-FILE-NAME argument.  Normalize the KEYMAP file as well.
(eye-candy): Add a BTRFS-SUBVOLUME-FILE-NAME parameter, and use it, along with
the NORMALIZE-FILE procedure, to normalize the FONT-FILE and IMAGE nested
variables.  Adjust doc.
* gnu/bootloader/depthcharge.scm (depthcharge-configuration-file): Adapt.
* gnu/bootloader/extlinux.scm (extlinux-configuration-file): Likewise.
* gnu/system/file-systems.scm (btrfs-subvolume?)
(btrfs-store-subvolume-file-name): New procedures.
* gnu/system.scm (operating-system-bootcfg): Specify the Btrfs
subvolume file name the store resides on to the
`operating-system-bootcfg' procedure, using the new
BTRFS-SUBVOLUME-FILE-NAME argument.
* doc/guix.texi (File Systems): Add a Btrfs subsection to document the use of
subvolumes.
* gnu/tests/install.scm (%btrfs-root-on-subvolume-os)
(%btrfs-root-on-subvolume-os-source)
(%btrfs-root-on-subvolume-installation-script)
(%test-btrfs-root-on-subvolume-os): New variables.
</span></span></td><td>Maxim Cournoyer</td></tr>