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xl: Fix rare freeze after many disk/network errors (#4438)

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xl.storageDisks is sometimes passed to some low-level XL functions. Some disks in
xl.storageDisks are set to nil when they encounter some errors. This means all
elements in xl.storageDisks will be nil after some time which lead to an unusable XL.
This commit is contained in:
Anis Elleuch
2017-06-15 01:14:27 +01:00
committed by Harshavardhana
parent dce76d9307
commit af8071c86a
10 changed files with 130 additions and 57 deletions
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cmd/erasure-createfile_test.go
+4 -4
View File
@@ -56,7 +56,7 @@ func TestErasureCreateFile(t *testing.T) {
t.Fatal(err)
}
// Test when all disks are up.
size, _, err := erasureCreateFile(disks, "testbucket", "testobject1", bytes.NewReader(data), true, blockSize, dataBlocks, parityBlocks, bitRotAlgo, dataBlocks+1)
_, size, _, err := erasureCreateFile(disks, "testbucket", "testobject1", bytes.NewReader(data), true, blockSize, dataBlocks, parityBlocks, bitRotAlgo, dataBlocks+1)
if err != nil {
t.Fatal(err)
}
@@ -69,7 +69,7 @@ func TestErasureCreateFile(t *testing.T) {
disks[5] = AppendDiskDown{disks[5].(*posix)}
// Test when two disks are down.
size, _, err = erasureCreateFile(disks, "testbucket", "testobject2", bytes.NewReader(data), true, blockSize, dataBlocks, parityBlocks, bitRotAlgo, dataBlocks+1)
_, size, _, err = erasureCreateFile(disks, "testbucket", "testobject2", bytes.NewReader(data), true, blockSize, dataBlocks, parityBlocks, bitRotAlgo, dataBlocks+1)
if err != nil {
t.Fatal(err)
}
@@ -83,7 +83,7 @@ func TestErasureCreateFile(t *testing.T) {
disks[8] = AppendDiskDown{disks[8].(*posix)}
disks[9] = AppendDiskDown{disks[9].(*posix)}
size, _, err = erasureCreateFile(disks, "testbucket", "testobject3", bytes.NewReader(data), true, blockSize, dataBlocks, parityBlocks, bitRotAlgo, dataBlocks+1)
_, size, _, err = erasureCreateFile(disks, "testbucket", "testobject3", bytes.NewReader(data), true, blockSize, dataBlocks, parityBlocks, bitRotAlgo, dataBlocks+1)
if err != nil {
t.Fatal(err)
}
@@ -93,7 +93,7 @@ func TestErasureCreateFile(t *testing.T) {
// 1 more disk down. 7 disk down in total. Should return quorum error.
disks[10] = AppendDiskDown{disks[10].(*posix)}
_, _, err = erasureCreateFile(disks, "testbucket", "testobject4", bytes.NewReader(data), true, blockSize, dataBlocks, parityBlocks, bitRotAlgo, dataBlocks+1)
_, _, _, err = erasureCreateFile(disks, "testbucket", "testobject4", bytes.NewReader(data), true, blockSize, dataBlocks, parityBlocks, bitRotAlgo, dataBlocks+1)
if errorCause(err) != errXLWriteQuorum {
t.Errorf("erasureCreateFile return value: expected errXLWriteQuorum, got %s", err)
}