[PATCH 09/14] FIX: Detect error and rollback metadata
From: Adam Kwolek <hidden>
Date: 2012-04-13 14:52:03
Subsystem:
the rest · Maintainer:
Linus Torvalds
Some setting size error cases were not detected. When error occurs, stop setting new size action and rollback metadata changes. Signed-off-by: Adam Kwolek <redacted> --- Grow.c | 13 +++++++++++-- 1 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/Grow.c b/Grow.c
index 86d1020..1b45199 100644
--- a/Grow.c
+++ b/Grow.c@@ -1665,9 +1665,12 @@ int Grow_reshape(char *devname, int fd, int quiet, char *backup_file, * understands '0' to mean 'max'. */ min_csize = 0; + rv = 0; for (mdi = sra->devs; mdi; mdi = mdi->next) { - if (sysfs_set_num(sra, mdi, "size", size) < 0) + if (sysfs_set_num(sra, mdi, "size", size) < 0) { + rv = 1; break; + } if (array.not_persistent == 0 && array.major_version == 0 && get_linux_version() < 3001000) {
@@ -1682,11 +1685,16 @@ int Grow_reshape(char *devname, int fd, int quiet, char *backup_file, } } } + if (rv) { + fprintf(stderr, Name ": Cannot set size on " + "array members.\n"); + goto size_change_error; + } if (min_csize && size > min_csize) { fprintf(stderr, Name ": Cannot safely make this array " "use more than 2TB per device on this kernel.\n"); rv = 1; - goto release; + goto size_change_error; } if (min_csize && size == 0) { /* Don't let the kernel choose a size - it will get
@@ -1748,6 +1756,7 @@ int Grow_reshape(char *devname, int fd, int quiet, char *backup_file, ioctl(fd, GET_ARRAY_INFO, &array); } +size_change_error: if (rv != 0) { int err = errno;
--
1.6.4.2