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Alike to ZFS disable cache flush after first ENOTSUP error.

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MFC after:	1 week
This commit is contained in:
Alexander Motin 2017-09-28 15:58:41 +00:00
parent cc5cd33264
commit 75b2ed47b7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=324086
1 changed files with 9 additions and 3 deletions
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12
usr.sbin/diskinfo/diskinfo.c
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@ -630,7 +630,7 @@ slogbench(int fd, int isreg, off_t mediasize, u_int sectorsize)
{
off_t off;
u_int size;
int error, n, N;
int error, n, N, nowritecache = 0;
printf("Synchronous random writes:\n");
for (size = sectorsize; size <= MAXTX; size *= 2) {
@ -641,12 +641,18 @@ slogbench(int fd, int isreg, off_t mediasize, u_int sectorsize)
for (n = 0; n < 250; n++) {
off = random() % (mediasize / size);
parwrite(fd, size, off * size);
if (nowritecache)
continue;
if (isreg)
error = fsync(fd);
else
error = ioctl(fd, DIOCGFLUSH);
if (error < 0)
err(EX_IOERR, "Flush error");
if (error < 0) {
if (errno == ENOTSUP)
nowritecache = 1;
else
err(EX_IOERR, "Flush error");
}
}
N += 250;
} while (delta_t() < 1.0);