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authorBarak Sason Rofman <bsasonro@redhat.com>2020-04-21 19:13:41 +0300
committerBarak Sason Rofman <sason922@gmail.com>2020-04-24 10:45:40 +0300
commit8e2741fdeca5ae0d855add0c80966217887dccd5 (patch)
treea6a57999e848e24d256559035475258200f9fceb /xlators/cluster/dht/src
parent88c1aee76d87246927e25f65c13d57aeba5e5af7 (diff)
dht - fixing rebalance failures for files with holes
Rebalance process handling of files which contains holes casued rebalance to fail with "No space left on device" errors. This patch modifies the code-flow in such a way that files with holes will be rebalanced correctly. fixes: #1187 Change-Id: I89bc3d4ea7f074db7213d759c49307f379543932 Signed-off-by: Barak Sason Rofman <bsasonro@redhat.com>
Diffstat (limited to 'xlators/cluster/dht/src')
-rw-r--r--xlators/cluster/dht/src/dht-rebalance.c21
1 files changed, 10 insertions, 11 deletions
diff --git a/xlators/cluster/dht/src/dht-rebalance.c b/xlators/cluster/dht/src/dht-rebalance.c
index ee4a728..46c2f9a 100644
--- a/xlators/cluster/dht/src/dht-rebalance.c
+++ b/xlators/cluster/dht/src/dht-rebalance.c
@@ -619,7 +619,7 @@ out:
static int
__dht_rebalance_create_dst_file(xlator_t *this, xlator_t *to, xlator_t *from,
loc_t *loc, struct iatt *stbuf, fd_t **dst_fd,
- int *fop_errno)
+ int *fop_errno, int file_has_holes)
{
int ret = -1;
int ret2 = -1;
@@ -788,7 +788,7 @@ __dht_rebalance_create_dst_file(xlator_t *this, xlator_t *to, xlator_t *from,
/* No need to bother about 0 byte size files */
if (stbuf->ia_size > 0) {
- if (conf->use_fallocate) {
+ if (conf->use_fallocate && !file_has_holes) {
ret = syncop_fallocate(to, fd, 0, 0, stbuf->ia_size, NULL, NULL);
if (ret < 0) {
if (ret == -EOPNOTSUPP || ret == -EINVAL || ret == -ENOSYS) {
@@ -815,9 +815,7 @@ __dht_rebalance_create_dst_file(xlator_t *this, xlator_t *to, xlator_t *from,
goto out;
}
}
- }
-
- if (!conf->use_fallocate) {
+ } else {
ret = syncop_ftruncate(to, fd, stbuf->ia_size, NULL, NULL, NULL,
NULL);
if (ret < 0) {
@@ -1703,9 +1701,13 @@ dht_migrate_file(xlator_t *this, loc_t *loc, xlator_t *from, xlator_t *to,
goto out;
}
+ /* Try to preserve 'holes' while migrating data */
+ if (stbuf.ia_size > (stbuf.ia_blocks * GF_DISK_SECTOR_SIZE))
+ file_has_holes = 1;
+
/* create the destination, with required modes/xattr */
ret = __dht_rebalance_create_dst_file(this, to, from, loc, &stbuf, &dst_fd,
- fop_errno);
+ fop_errno, file_has_holes);
if (ret) {
gf_msg(this->name, GF_LOG_ERROR, 0, 0,
"Create dst failed"
@@ -1749,8 +1751,8 @@ dht_migrate_file(xlator_t *this, loc_t *loc, xlator_t *from, xlator_t *to,
* destination. We need to do update this only post migration
* as in case of failure the linkto needs to point to the source
* subvol */
- ret = __dht_rebalance_create_dst_file(this, to, from, loc, &stbuf,
- &dst_fd, fop_errno);
+ ret = __dht_rebalance_create_dst_file(
+ this, to, from, loc, &stbuf, &dst_fd, fop_errno, file_has_holes);
if (ret) {
gf_log(this->name, GF_LOG_ERROR,
"Create dst failed"
@@ -1837,9 +1839,6 @@ dht_migrate_file(xlator_t *this, loc_t *loc, xlator_t *from, xlator_t *to,
ret = 0;
goto out;
}
- /* Try to preserve 'holes' while migrating data */
- if (stbuf.ia_size > (stbuf.ia_blocks * GF_DISK_SECTOR_SIZE))
- file_has_holes = 1;
ret = __dht_rebalance_migrate_data(this, defrag, from, to, src_fd, dst_fd,
stbuf.ia_size, file_has_holes,