nixpkgs/nixos/modules/virtualisation/growpart-util-linux-2.26.patch

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From 1895d10a7539d055a4e0206af1e7a9e5ea32a4f7 Mon Sep 17 00:00:00 2001
From: Juerg Haefliger <juerg.haefliger@hp.com>
Date: Wed, 25 Mar 2015 13:59:20 +0100
Subject: [PATCH] Support new sfdisk version 2.26
The sfdisk usage with version 2.26 changed. Specifically, the option
--show-pt-geometry and functionality for CHS have been removed.
Also, restoring a backup MBR now needs to be done using dd.
---
bin/growpart | 28 ++++++++++------------------
1 file changed, 10 insertions(+), 18 deletions(-)
diff --git a/bin/growpart b/bin/growpart
index 595c40b..d4c995b 100755
--- a/bin/growpart
+++ b/bin/growpart
@@ -28,7 +28,6 @@ PART=""
PT_UPDATE=false
DRY_RUN=0
-MBR_CHS=""
MBR_BACKUP=""
GPT_BACKUP=""
_capture=""
@@ -133,7 +132,8 @@ bad_Usage() {
}
mbr_restore() {
- sfdisk --no-reread "${DISK}" ${MBR_CHS} -I "${MBR_BACKUP}"
+ dd if="${MBR_BACKUP}-${DISK#/dev/}-0x00000000.bak" of="${DISK}" bs=1 \
+ conv=notrunc
}
sfdisk_worked_but_blkrrpart_failed() {
@@ -148,34 +148,26 @@ sfdisk_worked_but_blkrrpart_failed() {
mbr_resize() {
RESTORE_HUMAN="${TEMP_D}/recovery"
- MBR_BACKUP="${TEMP_D}/orig.save"
+ MBR_BACKUP="${TEMP_D}/backup"
local change_out=${TEMP_D}/change.out
local dump_out=${TEMP_D}/dump.out
local new_out=${TEMP_D}/new.out
local dump_mod=${TEMP_D}/dump.mod
- local tmp="${TEMP_D}/tmp.out"
- local err="${TEMP_D}/err.out"
- local _devc cyl _w1 heads _w2 sectors _w3 tot dpart
+ local tot dpart
local pt_start pt_size pt_end max_end new_size change_info
- # --show-pt-geometry outputs something like
- # /dev/sda: 164352 cylinders, 4 heads, 32 sectors/track
- rqe sfd_geom sfdisk "${DISK}" --show-pt-geometry >"${tmp}" &&
- read _devc cyl _w1 heads _w2 sectors _w3 <"${tmp}" &&
- MBR_CHS="-C ${cyl} -H ${heads} -S ${sectors}" ||
- fail "failed to get CHS from ${DISK}"
+ tot=$(sfdisk --list "${DISK}" | awk '{ print $(NF-1) ; exit }') ||
+ fail "failed to get total number of sectors from ${DISK}"
- tot=$((${cyl}*${heads}*${sectors}))
+ debug 1 "total number of sectors of ${DISK} is ${tot}"
- debug 1 "geometry is ${MBR_CHS}. total size=${tot}"
- rqe sfd_dump sfdisk ${MBR_CHS} --unit=S --dump "${DISK}" \
+ rqe sfd_dump sfdisk --dump "${DISK}" \
>"${dump_out}" ||
fail "failed to dump sfdisk info for ${DISK}"
-
{
- echo "## sfdisk ${MBR_CHS} --unit=S --dump ${DISK}"
+ echo "## sfdisk --dump ${DISK}"
cat "${dump_out}"
} >"${RESTORE_HUMAN}"
[ $? -eq 0 ] || fail "failed to save sfdisk -d output"
@@ -237,7 +229,7 @@ mbr_resize() {
exit 0
fi
- LANG=C sfdisk --no-reread "${DISK}" ${MBR_CHS} --force \
+ LANG=C sfdisk --no-reread "${DISK}" --force \
-O "${MBR_BACKUP}" <"${new_out}" >"${change_out}" 2>&1
ret=$?
[ $ret -eq 0 ] || RESTORE_FUNC="mbr_restore"
--
2.1.4