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zfs: introduce pkg zfs/zfscmd for command logging, status, prometheus metrics

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refs #196
This commit is contained in:
Christian Schwarz
2020-03-27 12:35:57 +01:00
parent 9568e46f05
commit 4e13ea46de
17 changed files with 511 additions and 119 deletions
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zfs/resume_token.go
+5 -4
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@@ -13,6 +13,7 @@ import (
"github.com/pkg/errors"
"github.com/zrepl/zrepl/util/envconst"
"github.com/zrepl/zrepl/zfs/zfscmd"
)
// NOTE: Update ZFSSendARgs.Validate when changing fields (potentially SECURITY SENSITIVE)
@@ -42,7 +43,7 @@ var resumeSendSupportedCheck struct {
func ResumeSendSupported(ctx context.Context) (bool, error) {
resumeSendSupportedCheck.once.Do(func() {
// "feature discovery"
cmd := exec.CommandContext(ctx, "zfs", "send")
cmd := zfscmd.CommandContext(ctx, "zfs", "send")
output, err := cmd.CombinedOutput()
if ee, ok := err.(*exec.ExitError); !ok || ok && !ee.Exited() {
resumeSendSupportedCheck.err = errors.Wrap(err, "resumable send cli support feature check failed")
@@ -86,7 +87,7 @@ func ResumeRecvSupported(ctx context.Context, fs *DatasetPath) (bool, error) {
}
if !sup.flagSupport.checked {
output, err := exec.CommandContext(ctx, "zfs", "receive").CombinedOutput()
output, err := zfscmd.CommandContext(ctx, ZFS_BINARY, "receive").CombinedOutput()
upgradeWhile(func() {
sup.flagSupport.checked = true
if ee, ok := err.(*exec.ExitError); err != nil && (!ok || ok && !ee.Exited()) {
@@ -124,7 +125,7 @@ func ResumeRecvSupported(ctx context.Context, fs *DatasetPath) (bool, error) {
if poolSup, ok = sup.poolSupported[pool]; !ok || // shadow
(!poolSup.supported && time.Since(poolSup.lastCheck) > resumeRecvPoolSupportRecheckTimeout) {
output, err := exec.CommandContext(ctx, "zpool", "get", "-H", "-p", "-o", "value", "feature@extensible_dataset", pool).CombinedOutput()
output, err := zfscmd.CommandContext(ctx, "zpool", "get", "-H", "-p", "-o", "value", "feature@extensible_dataset", pool).CombinedOutput()
if err != nil {
debug("resume recv pool support check result: %#v", sup.flagSupport)
poolSup.supported = false
@@ -181,7 +182,7 @@ func ParseResumeToken(ctx context.Context, token string) (*ResumeToken, error) {
// toname = pool1/test@b
//cannot resume send: 'pool1/test@b' used in the initial send no longer exists
cmd := exec.CommandContext(ctx, ZFS_BINARY, "send", "-nvt", string(token))
cmd := zfscmd.CommandContext(ctx, ZFS_BINARY, "send", "-nvt", string(token))
output, err := cmd.CombinedOutput()
if err != nil {
if exitErr, ok := err.(*exec.ExitError); ok {