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From ac0742b96f3c32539ec93df4251600ba9553d769 Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Sat, 31 Aug 2013 22:38:03 +0100
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Subject: [PATCH] drives: Ensure all scratch drives use cachemode "unsafe".
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They are _scratch_ drives so any data on them doesn't matter and can
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be reconstructed in the event of a host system crash.
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(cherry picked from commit 96cd7fcecb031bfe6baa49addfb026ae988fb7c1)
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(cherry picked from commit 053061f66f79d21bb48d089717a171470e05e47e)
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---
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src/drives.c | 6 ++++--
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1 file changed, 4 insertions(+), 2 deletions(-)
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diff --git a/src/drives.c b/src/drives.c
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index a6cc45a..ebd17f3 100644
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--- a/src/drives.c
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+++ b/src/drives.c
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@@ -1027,13 +1027,15 @@ int
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guestfs__add_drive_scratch (guestfs_h *g, int64_t size,
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const struct guestfs_add_drive_scratch_argv *optargs)
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{
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- struct guestfs_add_drive_opts_argv add_drive_optargs;
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+ struct guestfs_add_drive_opts_argv add_drive_optargs = { .bitmask = 0 };
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CLEANUP_FREE char *filename = NULL;
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int fd;
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/* Some parameters we always set. */
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- add_drive_optargs.bitmask = GUESTFS_ADD_DRIVE_OPTS_FORMAT_BITMASK;
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+ add_drive_optargs.bitmask |= GUESTFS_ADD_DRIVE_OPTS_FORMAT_BITMASK;
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add_drive_optargs.format = "raw";
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+ add_drive_optargs.bitmask |= GUESTFS_ADD_DRIVE_OPTS_CACHEMODE_BITMASK;
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+ add_drive_optargs.cachemode = "unsafe";
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/* Copy the optional arguments through to guestfs_add_drive_opts. */
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if (optargs->bitmask & GUESTFS_ADD_DRIVE_SCRATCH_NAME_BITMASK) {
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--
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1.8.4.2
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