From 3a8600b4ae9027d02aca7eb1990e5cda4e9f423a Mon Sep 17 00:00:00 2001 From: Greg Edwards Date: Fri, 25 Jun 2010 09:24:19 -0600 Subject: [PATCH 1/1] gracefully handle full /tmp file system If /tmp happens to be full, fio gives you a very unhelpful error: # ./fio rand-write-256k-q256.job Bus error Use posix_fallocate() to gracefully handle this condition. Signed-off-by: Greg Edwards Signed-off-by: Jens Axboe --- mutex.c | 8 ++++++++ smalloc.c | 12 +++++++++++- 2 files changed, 19 insertions(+), 1 deletion(-) diff --git a/mutex.c b/mutex.c index abe073f4..88044f3a 100644 --- a/mutex.c +++ b/mutex.c @@ -33,6 +33,14 @@ struct fio_mutex *fio_mutex_init(int value) return NULL; } +#ifdef FIO_HAVE_FALLOCATE + ret = posix_fallocate(fd, 0, sizeof(struct fio_mutex)); + if (ret > 0) { + fprintf(stderr, "posix_fallocate mutex failed: %s\n", strerror(ret)); + goto err; + } +#endif + if (ftruncate(fd, sizeof(struct fio_mutex)) < 0) { perror("ftruncate mutex"); goto err; diff --git a/smalloc.c b/smalloc.c index 409998aa..4cd8298e 100644 --- a/smalloc.c +++ b/smalloc.c @@ -10,9 +10,11 @@ #include #include #include +#include #include "mutex.h" #include "arch/arch.h" +#include "os/os.h" #define SMALLOC_REDZONE /* define to detect memory corruption */ @@ -176,7 +178,7 @@ static int find_next_zero(int word, int start) static int add_pool(struct pool *pool, unsigned int alloc_size) { - int fd, bitmap_blocks; + int fd, bitmap_blocks, ret; char file[] = "/tmp/.fio_smalloc.XXXXXX"; void *ptr; @@ -200,6 +202,14 @@ static int add_pool(struct pool *pool, unsigned int alloc_size) pool->nr_blocks = bitmap_blocks; pool->free_blocks = bitmap_blocks * SMALLOC_BPB; +#ifdef FIO_HAVE_FALLOCATE + ret = posix_fallocate(fd, 0, alloc_size); + if (ret > 0) { + fprintf(stderr, "posix_fallocate pool file failed: %s\n", strerror(ret)); + goto out_unlink; + } +#endif + if (ftruncate(fd, alloc_size) < 0) goto out_unlink; -- 2.25.1