storage: fallocate return interrupt err try again

Call fallocate, return code Interrupt error, should try again

Signed-off-by: YankunLi <liyankun01@58.com>

storage/fallocate_linux.go

@@ -14,8 +14,23 @@
 
 package storage
 
-import "syscall"
+import (
+	"syscall"
+
+	"github.com/cubefs/cubefs/util"
+)
 
 func fallocate(fd int, mode uint32, off int64, len int64) (err error) {
-	return syscall.Fallocate(fd, mode, off, len)
+	var tryCnt int
+	for {
+		err = syscall.Fallocate(fd, mode, off, len)
+		if err == syscall.EINTR {
+			tryCnt++
+			if tryCnt >= util.SyscallTryMaxTimes {
+				return
+			}
+			continue
+		}
+		return
+	}
 }

util/unit.go

@@ -32,13 +32,14 @@ const (
 )
 
 const (
-	BlockCount       = 1024
-	BlockSize        = 65536 * 2
-	ReadBlockSize    = BlockSize
-	PerBlockCrcSize  = 4
-	ExtentSize       = BlockCount * BlockSize
-	PacketHeaderSize = 57
-	BlockHeaderSize  = 4096
+	BlockCount         = 1024
+	BlockSize          = 65536 * 2
+	ReadBlockSize      = BlockSize
+	PerBlockCrcSize    = 4
+	ExtentSize         = BlockCount * BlockSize
+	PacketHeaderSize   = 57
+	BlockHeaderSize    = 4096
+	SyscallTryMaxTimes = 3
 )
 
 const (