diff options
| -rw-r--r-- | fs/xfs/xfs_globals.c | 4 | ||||
| -rw-r--r-- | fs/xfs/xfs_log_recover.c | 12 | ||||
| -rw-r--r-- | fs/xfs/xfs_sysctl.h | 5 | ||||
| -rw-r--r-- | fs/xfs/xfs_sysfs.c | 31 |
4 files changed, 52 insertions, 0 deletions
diff --git a/fs/xfs/xfs_globals.c b/fs/xfs/xfs_globals.c index 5399ef2..4d41b24 100644 --- a/fs/xfs/xfs_globals.c +++ b/fs/xfs/xfs_globals.c @@ -43,3 +43,7 @@ xfs_param_t xfs_params = { .fstrm_timer = { 1, 30*100, 3600*100}, .eofb_timer = { 1, 300, 3600*24}, }; + +struct xfs_globals xfs_globals = { + .log_recovery_delay = 0, /* no delay by default */ +}; diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 1fd5787..176c4b3 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -4509,6 +4509,18 @@ xlog_recover( return -EINVAL; } + /* + * Delay log recovery if the debug hook is set. This is debug + * instrumention to coordinate simulation of I/O failures with + * log recovery. + */ + if (xfs_globals.log_recovery_delay) { + xfs_notice(log->l_mp, + "Delaying log recovery for %d seconds.", + xfs_globals.log_recovery_delay); + msleep(xfs_globals.log_recovery_delay * 1000); + } + xfs_notice(log->l_mp, "Starting recovery (logdev: %s)", log->l_mp->m_logname ? log->l_mp->m_logname : "internal"); diff --git a/fs/xfs/xfs_sysctl.h b/fs/xfs/xfs_sysctl.h index bd8e157..ffef453 100644 --- a/fs/xfs/xfs_sysctl.h +++ b/fs/xfs/xfs_sysctl.h @@ -92,6 +92,11 @@ enum { extern xfs_param_t xfs_params; +struct xfs_globals { + int log_recovery_delay; /* log recovery delay (secs) */ +}; +extern struct xfs_globals xfs_globals; + #ifdef CONFIG_SYSCTL extern int xfs_sysctl_register(void); extern void xfs_sysctl_unregister(void); diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c index 32ddf0c..aa03670 100644 --- a/fs/xfs/xfs_sysfs.c +++ b/fs/xfs/xfs_sysfs.c @@ -54,7 +54,38 @@ struct kobj_type xfs_mp_ktype = { #ifdef DEBUG /* debug */ +STATIC ssize_t +log_recovery_delay_store( + const char *buf, + size_t count, + void *data) +{ + int ret; + int val; + + ret = kstrtoint(buf, 0, &val); + if (ret) + return ret; + + if (val < 0 || val > 60) + return -EINVAL; + + xfs_globals.log_recovery_delay = val; + + return count; +} + +STATIC ssize_t +log_recovery_delay_show( + char *buf, + void *data) +{ + return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.log_recovery_delay); +} +XFS_SYSFS_ATTR_RW(log_recovery_delay); + static struct attribute *xfs_dbg_attrs[] = { + ATTR_LIST(log_recovery_delay), NULL, }; |